ADVANCED AND EVER ADVANCING MITSUBISHI ELECTRIC MITSUBISHI 8-BIT SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 38000 SERIES 3802 Group User's Manual MITSUBISHI ELECTRIC keep safety first in your circuit designs ! Mitsubishi Electric Corporation puts the maximum effort into making semiconductor products better and more reliable, but there is always the possibility that trouble may occur with them. Trouble with semiconductors may lead to personal injury, fire or property damage. Remember to give due consideration to safety when making your circuit designs, with appropriate measures such as (i) placement of substitutive, auxiliary circuits, (ii) use of non-flammable material or (iii) prevention against any malfunction or mishap. Notes regarding these materials These materials are intended as a reference to assist our customers in the selection of the Mitsubishi semiconductor product best suited to the customer's application; they do not convey any license under any intellectual property rights, or any other rights, belonging to Mitsubishi Electric Corporation or a third party. Mitsubishi Electric Corporation assumes no responsibility for any damage, or infringement of any third-party's rights, originating in the use of any product data, diagrams, charts or circuit application examples contained in these materials. All information contained in these materials, including product data, diagrams and charts, represent information on products at the time of publication of these materials, and are subject to change by Mitsubishi Electric Corporation without notice due to product improvements or other reasons. It is therefore recommended that customers contact Mitsubishi Electric Corporation or an authorized Mitsubishi Semiconductor product distributor for the latest product information before purchasing a product listed herein. Mitsubishi Electric Corporation semiconductors are not designed or manufactured for use in a device or system that is used under circumstances in which human life is potentially at stake. Please contact Mitsubishi Electric Corporation or an authorized Mitsubishi Semiconductor product distributor when considering the use of a product contained herein for any specific purposes, such as apparatus or systems for transportation, vehicular, medical, aerospace, nuclear, or undersea repeater use. The prior written approval of Mitsubishi Electric Corporation is necessary to reprint or reproduce in whole or in part these materials. If these products or technologies are subject to the Japanese export control restrictions, they must be exported under a license from the Japanese government and cannot be imported into a country other than the approved destination. Any diversion or reexport contrary to the export control laws and regulations of Japan and/or the country of destination is prohibited. Please contact Mitsubishi Electric Corporation or an authorized Mitsubishi Semiconductor product distributor for further details on these materials or the products contained therein. Preface This user's manual describes Mitsubishi's CMOS 8bit microcomputers 3802 Group. After reading this manual, the user should have a through knowledge of the functions and features of the 3802 Group, and should be able to fully utilize the product. The manual starts with specifications and ends with application examples. For details of software, refer to the "SERIES MELPS 740 <SOFTWARE> USER'S MANUAL." For details of development support tools, refer to the "DEVELOPMENT SUPPORT TOOLS FOR MICROCOMPUTERS" data book. BEFORE USING THIS USER'S MANUAL This user's manual consists of the following three chapters. Refer to the chapter appropriate to your conditions, such as hardware design or software development. Chapter 3 also includes necessary information for systems development. Be sure to refer to this chapter. 1. Organization CHAPTER 1 HARDWARE This chapter describes features of the microcomputer and operation of each peripheral function. CHAPTER 2 APPLICATION This chapter describes usage and application examples of peripheral functions, based mainly on setting examples of related registers. CHAPTER 3 APPENDIX This chapter includes necessary information for systems development using the microcomputer, electric characteristics, a list of registers, the masking confirmation (mask ROM version), and mark specifications which are to be submitted when ordering. 2. Structure of register The figure of each register structure describes its functions, contents at reset, and attributes as follows : (Note 2) Bit attributes Bits (Note 1) Contents immediately after reset release b7 b6 b5 b4 b3 b2 b1 b0 0 CPU mode register (CPUM) [Address : 3B16] B 0 Name Function b1 b0 Processor mode bits 1 0 0 : Single-chip mode 01: 1 0 : Not available 11: 0 : 0 page 1 : 1 page At reset R W 0 0 2 Stack page selection bit 3 Nothing arranged for these bits. These are write disabled bits. When these bits are read out, the contents are "0." 0 0 Fix this bit to "0." 1 4 5 6 Main clock (XIN-XOUT) stop bit 7 Internal system clock selection bit : Bit in which nothing is arranged 0 : Operating 1 : Stopped 0 : XIN-XOUT selected 1 : XCIN-XCOUT selected 0 : Bit that is not used for control of the corresponding function Note 1. Contents immediately after reset release 0******"0" at reset release 1******"1" at reset release Undefined******Undefined or reset release ******Contents determined by option at reset release Note 2. Bit attributes******The attributes of control register bits are classified into 3 bytes : read-only, write-only and read and write. In the figure, these attributes are represented as follows : R******Read ******Read enabled ******Read disabled W******Write ******Write enabled ******Write disabled LIST OF GROUPS HAVING THE SIMILAR FUNCTIONS 3802 group, one of the CMOS 8-bit microcomputer 38000 series presented in this user's manual is provided with standard functions. The basic functions of the 3800, 3802, 3806 and 3807 groups having the same functions are shown below. For the detailed functions of each group, refer to the related data book and user's manual. List of groups having the same functions Group As of September 1995 3800 group 3802 group 3806 group 3807 group Pin (Package type) 64 pin * 64P4B * 64P6N-A * 64P6D-A 64 pin * 64P4B * 64P6N-A 80 pin * 80P6N-A * 80P6S-A * 80P6D-A 80 pin * 80P6N-A Clock generating circuit 1 circuit 1 circuit 1 circuit 2 circuit Timer <8-bit> Prescaler : 3 Timer : 4 <8-bit> Prescaler : 3 Timer : 4 <8-bit> Prescaler : 3 Timer : 4 Timer : 3 <16-bit> Timer X/Y : 2 Timer A/B : 2 UART or Clock synchronous 1 UART or Clock synchronous 1 UART or Clock synchronous 1 UART or Clock synchronous 1 Clock synchronous 1 Clock synchronous 1 Clock synchronous 1 A-D converter 8-bit 8-channel 8-bit 8-channel 8-bit 13-channel D-A converter 8-bit 2-channel 8-bit 2-channel 8-bit 4-channel Function <8-bit> Serial I/O Mask ROM Memory type One Time PROM EPROM RAM 8K 16K 24K 32K (Note 1) (Note 1) (Note 1) 16K 8K (Note 1) 32K 16K 32K 8K 16K (Note 1) (Note 1) 384 384 512 640 384 384 384 24K 32K 12K 16K 24K 32K 48K (Note 1) (Note 1) (Note 1) (Note 3) (Note 3) (Note 3) 32K 24K 48K (Note 1) (Note 2) (Note 3) 32K 24K 48K (Note 2) 640 1024 384 384 512 1024 1024 PWM output Remarks Notes 1: 2: 3: . Extended operating temperature version available High-speed version available Extended operating temperature version and High-speed version available ROM expansion 16K 16K 16K 512 Real time port output Analog comparator Watchdog timer Table of contents Table of contents CHAPTER 1. HARDWARE DESCRIPTION ................................................................................................................................ 1-2 FEATURES ...................................................................................................................................... 1-2 APPLICATIONS .............................................................................................................................. 1-2 PIN CONFIGURATION ................................................................................................................... 1-2 FUNCTIONAL BLOCK ................................................................................................................... 1-4 PIN DESCRIPTION ......................................................................................................................... 1-5 PART NUMBERING ....................................................................................................................... 1-6 GROUP EXPANSION ..................................................................................................................... 1-7 GROUP EXPANSION (EXTENDED OPERATING TEMPERATURE VERSION) .................... 1-8 FUNCTIONAL DESCRIPTION ....................................................................................................... 1-9 Central Processing Unit (CPU) ............................................................................................... 1-9 Memory .................................................................................................................................... 1-13 I/O Ports .................................................................................................................................. 1-15 Interrupts .................................................................................................................................. 1-18 Timers ...................................................................................................................................... 1-20 Serial I/O.................................................................................................................................. 1-22 Pulse Width Modulation (PWM) ............................................................................................ 1-28 A-D Converter ......................................................................................................................... 1-30 D-A Converter ......................................................................................................................... 1-31 Reset Circuit ............................................................................................................................ 1-32 Clock Generating Circuit ........................................................................................................ 1-34 Processor Modes .................................................................................................................... 1-35 NOTES ON PROGRAMMING ..................................................................................................... 1-37 Processor Status Register ..................................................................................................... 1-37 Interrupts .................................................................................................................................. 1-37 Decimal Calculations .............................................................................................................. 1-37 Timers ...................................................................................................................................... 1-37 Multiplication and Division Instructions ................................................................................ 1-37 Ports ......................................................................................................................................... 1-37 Serial I/O.................................................................................................................................. 1-37 A-D Converter ......................................................................................................................... 1-37 D-A Converter ......................................................................................................................... 1-37 Instruction Execution Time .................................................................................................... 1-37 Memory Expansion Mode....................................................................................................... 1-37 Memory Expansion Mode and Microprocessor Mode ....................................................... 1-37 DATA REQUIRED FOR MASK ORDERS ................................................................................. 1-38 3802 GROUP USER'S MANUAL i Table of contents ROM PROGRAMMING METHOD ............................................................................................... 1-38 FUNCTIONAL DESCRIPTION SUPPLEMENT ..........................................................................1-39 Interrupt .................................................................................................................................... 1-39 Timing After Interrupt ............................................................................................................. 1-40 A-D Converter ......................................................................................................................... 1-41 CHAPTER 2. APPLICATION 2.1 I/O port ..................................................................................................................................... 2-2 2.1.1 Memory map of I/O port ................................................................................................ 2-2 2.1.2 Related registers ............................................................................................................. 2-3 2.1.3 Handling of unused pins ................................................................................................ 2-4 2.2 Timer ......................................................................................................................................... 2-5 2.2.1 Memory map of timer ..................................................................................................... 2-5 2.2.2 Related registers ............................................................................................................. 2-6 2.2.3 Timer application examples ......................................................................................... 2-11 2.3 Serial I/O ................................................................................................................................ 2-23 2.3.1 Memory map of serial I/O ........................................................................................... 2-23 2.3.2 Related registers ........................................................................................................... 2-24 2.3.3 Serial I/O connection examples .................................................................................. 2-30 2.3.4 Setting of serial I/O transfer data format ................................................................. 2-32 2.3.5 Serial I/O application examples .................................................................................. 2-33 2.4 PWM ........................................................................................................................................ 2-53 2.4.1 Memory map of PWM .................................................................................................. 2-53 2.4.2 Related registers ........................................................................................................... 2-54 2.4.3 PWM output circuit application example ................................................................... 2-56 2.5 A-D converter ........................................................................................................................ 2-59 2.5.1 Memory map of A-D conversion .................................................................................2-59 2.5.2 Related registers ........................................................................................................... 2-60 2.5.3 A-D conversion application example ..........................................................................2-62 2.6 Processor mode ................................................................................................................... 2-64 2.6.1 Memory map of processor mode ................................................................................ 2-64 2.6.2 Related register ............................................................................................................. 2-64 2.6.3 Processor mode application examples ...................................................................... 2-65 2.7 Reset ....................................................................................................................................... 2-69 2.7.1 Connection example of reset IC .................................................................................2-69 CHAPTER 3. APPENDIX 3.1 Electrical characteristics ...................................................................................................... 3-2 3.1.1 Absolute maximum ratings ............................................................................................ 3-2 3.1.2 Recommended operating conditions ............................................................................. 3-2 3.1.3 Electrical characteristics................................................................................................. 3-3 ii 3802 GROUP USER'S MANUAL Table of contents 3.1.4 A-D converter characteristics ........................................................................................ 3-3 3.1.5 D-A converter characteristics ........................................................................................ 3-4 3.1.6 Timing requirements and Switching characteristics .................................................. 3-5 3.1.7 Absolute maximum ratings (Extended operating temperature version) .................. 3-9 3.1.8 Recommended operating conditions(Extended operating temperature version) .... 3-9 3.1.9 Electrical characteristics (Extended operating temperature version) .................... 3-10 3.1.10 A-D converter characteristics (Extended operating temperature version) ........ 3-10 3.1.11 D-A converter characteristics (Extended operating temperature version) ........ 3-11 3.1.12 Timing requirements and Switching characteristics (Extended operating temperature version) ......................................................... 3-12 3.1.13 Timing diagram ........................................................................................................... 3-14 3.2 Standard characteristics ..................................................................................................... 3-17 3.2.1 Power source current characteristic examples ........................................................ 3-17 3.2.2 Port standard characteristic examples ...................................................................... 3-18 3.2.3 A-D conversion standard characteristics .................................................................. 3-20 3.2.4 D-A conversion standard characteristics .................................................................. 3-21 3.3 Notes on use......................................................................................................................... 3-22 3.3.1 Notes on interrupts ....................................................................................................... 3-22 3.3.2 Notes on the serial I/O1 .............................................................................................. 3-22 3.3.3 Notes on the A-D converter ........................................................................................ 3-23 3.3.4 Notes on the RESET pin ............................................................................................. 3-24 3.3.5 Notes on input and output pins .................................................................................. 3-24 3.3.6 Notes on memory expansion mode and microprocessor mode ............................ 3-25 3.3.7 Notes on built-in PROM ............................................................................................... 3-26 3.4 Countermeasures against noise ....................................................................................... 3-28 3.4.1 Shortest wiring length .................................................................................................. 3-28 3.4.2 Connection of a bypass capacitor across the Vss line and the Vcc line ............ 3-29 3.4.3 Wiring to analog input pins ......................................................................................... 3-30 3.4.4 Consideration for oscillator .......................................................................................... 3-30 3.4.5 Setup for I/O ports ....................................................................................................... 3-31 3.4.6 Providing of watchdog timer function by software .................................................. 3-31 3.5 List of registers .................................................................................................................... 3-33 3.6 Mask ROM ordering method .............................................................................................. 3-47 3.7 Mark specification form ...................................................................................................... 3-61 3.8 Package outline .................................................................................................................... 3-63 3.9 List of instruction codes .................................................................................................... 3-65 3.10 Machine Instructions ......................................................................................................... 3-66 3.11 SFR memory map .............................................................................................................. 3-76 3.12 Pin configuration ................................................................................................................ 3-77 3802 GROUP USER'S MANUAL iii List of figures List of figures CHAPTER 1 HARDWARE Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. 1 Pin configuration of M38022M4-XXXFP ..........................................................................1-2 2 Pin configuration of M38022M4-XXXSP ..........................................................................1-3 3 Functional block diagram ................................................................................................... 1-4 4 Part numbering .................................................................................................................... 1-6 5 Memory expansion plan ..................................................................................................... 1-7 6 Memory expansion plan (Extended operating temperature version) .......................... 1-8 7 740 Family CPU register structure ................................................................................... 1-9 8 Register push and pop at interrupt generation and subroutine call ........................ 1-10 9 Structure of CPU mode register ..................................................................................... 1-11 10 Memory map diagram .................................................................................................... 1-12 11 Memory map of special function register (SFR) ....................................................... 1-13 12 Port block diagram (single-chip mode) (1) ................................................................ 1-16 13 Port block diagram (single-chip mode) (2) ................................................................ 1-17 14 Interrupt control ............................................................................................................... 1-18 15 Structure of interrupt-related registers ........................................................................ 1-18 16 Structure of timer XY register ....................................................................................... 1-19 17 Block diagram of timer X, timer Y, timer 1, and timer 2 ........................................ 1-21 18 Block diagram of clock synchronous serial I/O1....................................................... 1-22 19 Operation of clock synchronous serial I/O1 function ............................................... 1-22 20 Block diagram of UART serial I/O .............................................................................. 1-23 21 Operation of UART serial I/O function ....................................................................... 1-24 22 Structure of serial I/O control registers ...................................................................... 1-25 23 Structure of serial I/O2 control register...................................................................... 1-26 24 Block diagram of serial I/O2 function ......................................................................... 1-26 25 Timing of serial I/O2 function ....................................................................................... 1-27 26 Timing of PWM cycle ..................................................................................................... 1-28 27 Block diagram of PWM function ................................................................................... 1-28 28 Structure of PWM control register............................................................................... 1-29 29 PWM output timing when PWM register or PWM prescaler is changed ............... 1-29 30 Structure of AD/DA control register ............................................................................ 1-30 31 Block diagram of A-D converter ................................................................................... 1-30 32 Block diagram of D-A converter ................................................................................... 1-31 33 Equivalent connection circuit of D-A converter ......................................................... 1-31 34 Example of reset circuit ................................................................................................. 1-32 35 Internal status of microcomputer after reset ............................................................. 1-32 36 Timing of reset ................................................................................................................ 1-33 37 Ceramic resonator circuit............................................................................................... 1-34 38 External clock input circuit ............................................................................................ 1-34 39 Block diagram of clock generating circuit .................................................................................. 1-34 40 Memory maps in various processor modes ............................................................... 1-35 41 Structure of CPU mode register ................................................................................... 1-35 42 ONW function timing ...................................................................................................... 1-36 43 Programming and testing of One Time PROM version ........................................... 1-38 44 Timing chart after an interrupt occurs ........................................................................ 1-40 45 Time up to execution of the interrupt processing routine ....................................... 1-40 46 A-D conversion equivalent circuit ................................................................................. 1-42 47 A-D conversion timing chart .......................................................................................... 1-42 3802 GROUP USER'S MANUAL i List of figures CHAPTER 2 APPLICATION Fig. 2.1.1 Memory map of I/O port related registers ............................................................... 2-2 Fig. 2.1.2 Structure of Port Pi (i=0, 1, 2, 3, 4, 5, 6)............................................................... 2-3 Fig. 2.1.3 Structure of Port Pi direction register (i=0, 1, 2, 3, 4, 5, 6) ................................ 2-3 Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. 2.2.1 Memory map of timer related registers ......................................................................2-5 2.2.2 Structure of Prescaler 12, Prescaler X, Prescaler Y .............................................. 2-6 2.2.3 Structure of Timer 1 ..................................................................................................... 2-6 2.2.4 Structure of Timer 2, Timer X, Timer Y ....................................................................2-7 2.2.5 Structure of Timer XY mode register ......................................................................... 2-8 2.2.6 Structure of Interrupt request register 1 ....................................................................2-9 2.2.7 Structure of Interrupt request register 2 ....................................................................2-9 2.2.8 Structure of Interrupt control register 1 .................................................................. 2-10 2.2.9 Structure of Interrupt control register 2 .................................................................. 2-10 2.2.10 Connection of timers and setting of division ratios [Clock function] ................ 2-12 2.2.11 Setting of related registers [Clock function] ......................................................... 2-13 2.2.12 Control procedure [Clock function] ........................................................................ 2-14 2.2.13 Example of a peripheral circuit ...............................................................................2-15 2.2.14 Connection of the timer and setting of the division ratio [Piezoelectric buzzer output] ........... 2-15 2.2.15 Setting of related registers [Piezoelectric buzzer output] ................................... 2-16 2.2.16 Control procedure [Piezoelectric buzzer output] .................................................. 2-16 2.2.17 A method for judging if input pulse exists ........................................................... 2-17 2.2.18 Setting of related registers [Measurement of frequency] ................................... 2-18 2.2.19 Control procedure [Measurement of frequency] ................................................... 2-19 2.2.20 Connection of the timer and setting of the division ratio [Measurement of pulse width] ........... 2-20 2.2.21 Setting of related registers [Measurement of pulse width] ................................ 2-21 2.2.22 Control procedure [Measurement of pulse width] ................................................ 2-22 Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. 2.3.1 Memory map of serial I/O related registers ........................................................... 2-23 2.3.2 Structure of Transmit/Receive buffer register ........................................................ 2-24 2.3.3 Structure of Serial I/O1 status register ................................................................... 2-24 2.3.4 Structure of Serial I/O1 control register .................................................................. 2-25 2.3.5 Structure of UART control register ........................................................................... 2-25 2.3.6 Structure of Baud rate generator ..............................................................................2-26 2.3.7 Structure of Serial I/O2 control register .................................................................. 2-26 2.3.8 Structure of Serial I/O2 register................................................................................ 2-27 2.3.9 Structure of Interrupt edge selection register ........................................................ 2-27 2.3.10 Structure of Interrupt request register 1 ............................................................... 2-28 2.3.11 Structure of Interrupt request register 2 ............................................................... 2-28 2.3.12 Structure of Interrupt control register 1 ................................................................ 2-29 2.3.13 Structure of Interrupt control register 2 ................................................................ 2-29 2.3.14 Serial I/O connection examples (1) ....................................................................... 2-30 2.3.15 Serial I/O connection examples (2) ....................................................................... 2-31 2.3.16 Setting of Serial I/O transfer data format ............................................................. 2-32 2.3.17 Connection diagram [Communication using a clock synchronous serial I/O] .. 2-33 2.3.18 Timing chart [Communication using a clock synchronous serial I/O] ............... 2-33 2.3.19 Setting of related registers at a transmitting side [Communication using a clock synchronous serial I/O] ................................ 2-34 Fig. 2.3.20 Setting of related registers at a receiving side [Communication using a clock synchronous serial I/O] ................................ 2-35 ii 3802 GROUP USER'S MANUAL List of figures Fig. 2.3.21 Control procedure at a transmitting side [Communication using a clock synchronous serial I/O] .................................. 2-36 Fig. 2.3.22 Control procedure at a receiving side[Communication using a clock synchronous serial I/O] .. 2-37 Fig. 2.3.23 Connection diagram [Output of serial data] ......................................................... 2-38 Fig. 2.3.24 Timing chart [Output of serial data] ...................................................................... 2-38 Fig. 2.3.25 Setting of serial I/O1 related registers [Output of serial data] .......................... 2-39 Fig. 2.3.26 Setting of serial I/O1 transmission data [Output of serial data]........................ 2-39 Fig. 2.3.27 Control procedure of serial I/O1 [Output of serial data] .................................... 2-40 Fig. 2.3.28 Setting of serial I/O2 related registers [Output of serial data] .......................... 2-41 Fig. 2.3.29 Setting of serial I/O2 transmission data [Output of serial data]........................ 2-41 Fig. 2.3.30 Control procedure of serial I/O2 [Output of serial data] .................................... 2-42 Fig. 2.3.31 Connection diagram [Cyclic transmission or reception of block data between microcomputers] .. 2-43 Fig. 2.3.32 Timing chart [Cyclic transmission or reception of block data between microcomputers] .......... 2-44 Fig. 2.3.33 Setting of related registers [Cyclic transmission or reception of block data between microcomputers] .. 2-44 Fig. 2.3.34 Control in the master unit ....................................................................................... 2-45 Fig. 2.3.35 Control in the slave unit .......................................................................................... 2-46 Fig. 2.3.36 Connection diagram [Communication using UART] ............................................ 2-47 Fig. 2.3.37 Timing chart [Communication using UART] ......................................................... 2-47 Fig. 2.3.38 Setting of related registers at a transmitting side [Communication using UART] ........................ 2-49 Fig. 2.3.39 Setting of related registers at a receiving side [Communication using UART] ............................ 2-50 Fig. 2.3.40 Control procedure at a transmitting side [Communication using UART] .......... 2-51 Fig. 2.3.41 Control procedure at a receiving side [Communication using UART] ............. 2-52 Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. 2.4.1 2.4.2 2.4.3 2.4.4 2.4.5 2.4.6 2.4.7 2.4.8 2.4.9 Memory map of PWM related registers .................................................................. 2-53 Structure of PWM control register ............................................................................ 2-54 Structure of PWM prescaler ...................................................................................... 2-54 Structure of PWM register ......................................................................................... 2-55 Connection diagram .................................................................................................... 2-56 PWM output timing ..................................................................................................... 2-56 Setting of related registers ........................................................................................ 2-57 PWM output ................................................................................................................. 2-57 Control procedure ....................................................................................................... 2-58 Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. 2.5.1 2.5.2 2.5.3 2.5.4 2.5.5 2.5.6 2.5.7 2.5.8 Memory map of A-D conversion related registers ................................................ 2-59 Structure of AD/DA control register ........................................................................ 2-60 Structure of A-D conversion register ...................................................................... 2-60 Structure of Interrupt request register 2 ................................................................ 2-61 Structure of Interrupt control register 2 ................................................................. 2-61 Connection diagram [Conversion of Analog input voltage] ................................. 2-62 Setting of related registers [Conversion of Analog input voltage] ..................... 2-62 Control procedure [Conversion of Analog input voltage]..................................... 2-63 Fig. Fig. Fig. Fig. Fig. Fig. Fig. 2.6.1 2.6.2 2.6.3 2.6.4 2.6.5 2.6.6 2.6.7 Memory map of processor mode related register ................................................ 2-64 Structure of CPU mode register .............................................................................. 2-64 Expansion example of ROM and RAM .................................................................. 2-65 Read-cycle (OE access, SRAM) ............................................................................. 2-66 Read-cycle (OE access, EPROM) .......................................................................... 2-66 Write-cycle (W control, SRAM)................................................................................. 2-67 Application example of the ONW function ............................................................. 2-68 3802 GROUP USER'S MANUAL iii List of figures Fig. 2.7.1 Example of Poweron reset circuit ........................................................................... 2-69 Fig. 2.7.2 RAM back-up system ................................................................................................. 2-69 CHAPTER 3 APPENDIX Fig. Fig. Fig. Fig. 3.1.1 3.1.2 3.1.3 3.1.4 Circuit Timing Timing Timing for measuring output switching characteristics ......................................... 3-13 diagram (in single-chip mode) ..................................................................... 3-14 diagram (in memory expansion mode and microprocessor mode) (1) .. 3-15 diagram (in memory expansion mode and microprocessor mode) (2) .. 3-16 Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. 3.2.1 3.2.2 3.2.3 3.2.4 3.2.5 3.2.6 3.2.7 3.2.8 Power source current characteristic example ....................................................... 3-17 Power source current characteristic example (in wait mode) ............................. 3-17 Standard characteristic example of CMOS output port at P-channel drive(1) . 3-18 Standard characteristic example of CMOS output port at P-channel drive(2) . 3-18 Standard characteristic example of CMOS output port at N-channel drive(1) . 3-19 Standard characteristic example of CMOS output port at N-channel drive(2) . 3-19 A-D conversion standard characteristics ................................................................ 3-20 D-A conversion standard characteristics ................................................................ 3-21 Fig. 3.3.1 Structure of interrupt control register 2 ................................................................. 3-22 iv Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. 3.4.1 3.4.2 3.4.3 3.4.4 3.4.5 3.4.6 3.4.7 3.4.8 3.4.9 Wiring for the RESET pin ......................................................................................... 3-28 Wiring for clock I/O pins ........................................................................................... 3-29 Wiring for the V PP pin of the One Time PROM and the EPROM version ....... 3-29 Bypass capacitor across the V SS line and the V CC line ..................................... 3-29 Analog signal line and a resistor and a capacitor ............................................... 3-30 Wiring for a large current signal line ..................................................................... 3-30 Wiring to a signal line where potential levels change frequently ...................... 3-30 Stepup for I/O ports ................................................................................................... 3-31 Watchdog timer by software ..................................................................................... 3-31 Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. 3.5.1 Structure of Port Pi (i=0, 1, 2, 3, 4, 5, 6)............................................................. 3-33 3.5.2 Structure of Port Pi direction register (i=0, 1, 2, 3, 4, 5, 6) .............................. 3-33 3.5.3 Structure of Transmit/Receive buffer register ....................................................... 3-34 3.5.4 Structure of Serial I/O1 status register .................................................................. 3-34 3.5.5 Structure of Serial I/O1 control register ................................................................. 3-35 3.5.6 Structure of UART control register ......................................................................... 3-35 3.5.7 Structure of Baud rate generator ............................................................................ 3-36 3.5.8 Structure of Serial I/O2 control register ................................................................. 3-36 3.5.9 Structure of Serial I/O2 register .............................................................................. 3-37 3.5.10 Structure of Prescaler 12, Prescaler X, Prescaler Y ......................................... 3-37 3.5.11 Structure of Timer 1 ................................................................................................ 3-38 3.5.12 Structure of Timer 2, Timer X, Timer Y .............................................................. 3-38 3.5.13 Structure of Timer XY mode register ................................................................... 3-39 3.5.14 Structure of PWM control register ........................................................................ 3-40 3.5.15 Structure of PWM prescaler ...................................................................................3-40 3.5.16 Structure of PWM register ....................................................................................... 3-41 3.5.17 Structure of AD/DA control register ...................................................................... 3-42 3.5.18 Structure of A-D conversion register ..................................................................... 3-42 3.5.19 Structure of D-A 1 conversion, D-A 2 conversion register ................................ 3-43 3.5.20 Structure of Interrupt edge selection register ...................................................... 3-43 3.5.21 Structure of CPU mode register .............................................................................3-44 3802 GROUP USER'S MANUAL List of figures Fig. Fig. Fig. Fig. 3.5.22 3.5.23 3.5.24 3.5.25 Structure Structure Structure Structure of of of of Interrupt Interrupt Interrupt Interrupt request register 1 ............................................................... request register 2 ............................................................... control register 1 ................................................................ control register 2 ................................................................ 3802 GROUP USER'S MANUAL 3-45 3-45 3-46 3-46 v List of tables List of tables CHAPTER 1 HARDWARE Table Table Table Table Table Table Table Table Table Table Table 1 Pin description.................................................................................................................. 1-5 2 List of supported products .............................................................................................. 1-7 3 List of supported products (Extended operating temperature version) ................... 1-8 4 Push and pop instructions of accumulator or processor status register .............. 1-10 5 Set and clear instructions of each bit of processor status register ...................... 1-11 6 List of I/O port functions .............................................................................................. 1-15 7 Interrupt vector addresses and priority ..................................................................... 1-18 8 Functions of ports in memory expansion mode and microprocessor mode ........ 1-35 9 Programming adapter .................................................................................................... 1-38 10 Interrupt sources, vector addresses and interrupt priority.................................... 1-39 11 Change of A-D conversion register during A-D conversion ................................. 1-41 CHAPTER 2 APPLICATION Table 2.1.1 Handling of unused pins (in single-chip mode) .................................................... 2-4 Table 2.1.2 Handling of unused pins (in memory expansion mode and microprocessor mode) ......... 2-4 Table 2.2.1 Function of CNTR0 /CNTR1 edge switch bit .......................................................... 2-8 Table 2.3.1 Setting examples of Baud rate generator values and transfer bit rate values ...................... 2-48 CHAPTER 3 APPENDIX Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table 3.1.1 Absolute maximum ratings ....................................................................................... 3-2 3.1.2 Recommended operating conditions .......................................................................3-2 3.1.3 Electrical characteristics ........................................................................................... 3-3 3.1.4 A-D converter characteristics................................................................................... 3-3 3.1.5 D-A converter characteristics................................................................................... 3-4 3.1.6 Timing requirements ................................................................................................. 3-5 3.1.7 Timing requirements (2) ........................................................................................... 3-5 3.1.8 Switching characteristics (1) ....................................................................................3-6 3.1.9 Switching characteristics (2) ....................................................................................3-6 3.1.10 Timing requirements in memory expansion mode and microprocessor mode (1) ..................... 3-7 3.1.11 Switching characteristics in memory expansion mode and microprocessor mode (1) ............ 3-7 3.1.12 Timing requirements in memory expansion mode and microprocessor mode (2) ..................... 3-8 3.1.13 Switching characteristics in memory expansion mode and microprocessor mode (2) ............ 3-8 3.1.14 Absolute maximum ratings (Extended operating temperature version) .......... 3-9 3.1.15 Recommended operating conditions (Extended operating temperature version) ...... 3-9 3.1.16 Electrical characteristics (Extended operating temperature version) ............ 3-10 3.1.17 A-D converter characteristics (Extended operating temperature version) .... 3-10 3.1.18 D-A converter characteristics (Extended operating temperature version) .... 3-11 3.1.19 Timing requirements (Extended operating temperature version) ................... 3-12 3.1.20 Switching characteristics (Extended operating temperature version) ........... 3-12 3802 GROUP USER'S MANUAL i List of tables Table 3.1.21 Timing requirements in memory expansion mode and microprocessor mode (Extended operating temperature version) .................................................. 3-13 Table 3.1.22 Switching characteristics in memory expansion mode and microprocessor mode (Extended operating temperature version) .................................................. 3-13 Table 3.3.1 Programming adapter .............................................................................................. 3-26 Table 3.3.2 Setting of programming adapter switch .............................................................. 3-26 Table 3.3.3 Setting of PROM programmer address ............................................................... 3-27 Table 3.5.1 Function of CNTR0 /CNTR 1 edge switch bit ....................................................... 3-39 ii 3802 GROUP USER'S MANUAL CHAPTER 1 HARDWARE DESCRIPTION FEATURES APPLICATIONS PIN CONFIGURATION FUNCTIONAL BLOCK PIN DESCRIPTION PART NUMBERING GROUP EXPANSION FUNCTIONAL DESCRIPTION NOTES ON PROGRAMMING DATA REQUIRED FOR MASK ORDERS ROM PROGRAMMING METHOD FUNCTIONAL DESCRIPTION SUPPLEMENT HARDWARE DESCRIPTION/FEATURES/APPLICATIONS/PIN CONFIGURATION DESCRIPTION * Programmable input/output ports ............................................. 56 * Interrupts .................................................. 16 sources, 16 vectors * Timers ............................................................................. 8 bit 4 * Serial I/O1 .................... 8-bit 1 (UART or Clock-synchronized) * Serial I/O2 .................................... 8-bit 1 (Clock-synchronized) * PWM ................................................................................ 8-bit 1 * A-D converter .................................................. 8-bit 8 channels * D-A converter .................................................. 8-bit 2 channels * Clock generating circuit ....................... Internal feedback resistor The 3802 group is the 8-bit microcomputer based on the 740 family core technology. The 3802 group is designed for controlling systems that require analog signal processing and include two serial I/O functions, A-D converters, and D-A converters. The various microcomputers in the 3802 group include variations of internal memory size and packaging. For details, refer to the section on part numbering. For details on availability of microcomputers in the 3802 group, refer to the section on group expansion. * FEATURES * * * * Basic machine-language instructions ....................................... 71 * The minimum instruction execution time ............................ 0.5 s (at 8 MHz oscillation frequency) * Memory size (connect to external ceramic resonator or quartz-crystal oscillator) Power source voltage .................................................. 3.0 to 5.5 V (Extended operating temperature version : 4.0 to 5.5 V) Power dissipation ............................................................... 32 mW Memory expansion possible Operating temperature range .................................... -20 to 85C (Extended operating temperature version : -40 to 85C) APPLICATIONS ROM .................................................................. 8 K to 32 K bytes RAM ................................................................. 384 to 1024 bytes Office automation, VCRs, tuners, musical instruments, cameras, air conditioners, etc. 34 33 36 35 39 38 37 41 40 43 42 46 45 44 48 49 32 50 31 51 52 30 53 28 54 27 26 29 55 56 57 25 M38022M4-XXXFP 24 58 23 59 60 22 21 61 20 62 19 63 18 17 15 16 13 14 10 11 12 9 8 7 6 5 3 4 P62/AN2 P61/AN1 P60/AN0 P57/INT3 P56/PWM P55/CNTR1 P54/CNTR0 P53/SRDY2 P52/SCLK2 P51/SOUT2 P50/SIN2 P47/SRDY1 P46/SCLK1 P45/TXD P44/RXD P43/INT2 1 64 2 P37/RD P36/WR P35/SYNC P34/ P33/RESETOUT P32/ONW P31/DA2 P30/DA1 VCC VREF AVSS P67/AN7 P66/AN6 P65/AN5 P64/AN4 P63 /AN3 47 P00/AD0 P01/AD1 P02/AD2 P03/AD3 P04/AD4 P05/AD5 P06/AD6 P07/AD7 P10/AD8 P11/AD9 P12/AD10 P13/AD11 P14/AD12 P15/AD13 P16/AD14 P17/AD15 PIN CONFIGURATION (TOP VIEW) Package type : 64P6N-A 64-pin plastic-molded QFP Fig. 1 Pin configuration of M38022M4-XXXFP 1-2 3802 GROUP USER'S MANUAL P20/DB0 P21/DB1 P22/DB2 P23/DB3 P24/DB4 P25/DB5 P26/DB6 P27/DB7 VSS XOUT XIN P40/INT4 P41/INT0 RESET CNVSS P42/INT1 HARDWARE PIN CONFIGURATION PIN CONFIGURATION (TOP VIEW) 1 64 2 63 3 62 4 61 5 60 6 59 7 58 8 57 9 56 10 55 11 54 12 53 13 14 15 16 17 18 19 20 M38022M4-XXXSP VCC VREF AV SS P67/AN 7 P66/AN 6 P65/AN 5 P64/AN 4 P63/AN 3 P62/AN 2 P61/AN 1 P60/AN 0 P57/INT 3 P56/PWM P55/CNTR 1 P54/CNTR 0 P53/SRDY2 P52/SCLK2 P51/SOUT2 P50/SIN2 P47/SRDY1 P46/SCLK1 P45/TXD P44/RXD P43/INT 2 P42/INT 1 CNV SS RESET P41/INT 0 P40/INT 4 XIN XOUT VSS 52 51 50 49 48 47 46 45 21 44 22 43 23 42 24 41 25 40 26 39 27 38 28 37 29 36 30 35 31 34 32 33 P30/DA 1 P31/DA 2 P32/ONW P33/RESET OUT P34/ P35/SYNC P36/WR P37/RD P00/AD 0 P01/AD 1 P02/AD 2 P03/AD 3 P04/AD 4 P05/AD 5 P06/AD 6 P07/AD 7 P10/AD 8 P11/AD 9 P12/AD 10 P13/AD 11 P14/AD 12 P15/AD 13 P16/AD 14 P17/AD 15 P20/DB 0 P21/DB 1 P22/DB 2 P23/DB 3 P24/DB 4 P25/DB 5 P26/DB 6 P27/DB 7 Package type : 64P4B 64-pin shrink plastic-molded DIP Fig.2 Pin configuration of M38022M4-XXXSP 3802 GROUP USER'S MANUAL 1-3 1-4 31 Clock output XOUT Fig. 3 Functional block diagram 3802 GROUP USER'S MANUAL 3 I/O port P5 12 13 14 15 16 17 18 19 4 5 6 7 8 9 10 11 I/O port P6 P5(8) SI/O2 (8) ROM P6(8) INT3 PWM (8) RAM SI/O1 (8) 32 VSS PS PC L S Y X A INT0 D-A converter 2 (8) INT2 INT4 I/O port P4 20 21 22 23 24 25 28 29 P4(8) PC H CPU 1 VCC ~ VREF AVSS 2 A-D converter (8) Clock generating circuit 30 Clock input XIN FUNCTIONAL BLOCK DIAGRAM (Package : 64P4B) P3(8) CNTR0 P2(8) CNTR1 Prescaler Y (8) Prescaler X (8) P1(8) I/O port P3 I/O port P2 I/O port P1 I/O port P0 49 50 51 52 53 54 55 56 P0(8) Timer Y (8) Timer X (8) Timer 2 (8) Timer 1 (8) 57 58 59 60 61 62 63 64 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 D-A converter 1 (8) 26 27 Prescaler 12 (8) CNVSS RESET Reset input HARDWARE FUNCTIONAL BLOCK FUNCTIONAL BLOCK HARDWARE PIN DESCRIPTION PIN DESCRIPTION Table 1. Pin description Pin Function Name Function except a port function VCC , VSS Power source * Apply voltage of 3.0 V-5.5 V to VCC, and 0 V to VSS. (Extended operating temperature version : 4.0 V to 5.5 V) CNVSS CNVSS * This pin controls the operation mode of the chip. * Normally connected to VSS. * If this pin is connected to VCC, the internal ROM is inhibited and external memory is accessed. VREF Analog reference voltage * Reference voltage input pin for A-D and D-A converters AVSS Analog power source * GND input pin for A-D and D-A converters * Connect to VSS . RESET Reset input * Reset input pin for active "L" XIN Clock input XOUT Clock output * Input and output signals for the clock generating circuit. * Connect a ceramic resonator or quartz-crystal oscillator between the XIN and X OUT pins to set the oscillation frequency. * If an external clock is used, connect the clock source to the XIN pin and leave the XOUT pin open. * The clock is used as the oscillating source of system clock. P00-P07 I/O port P0 P10-P17 I/O port P1 P20-P27 I/O port P2 P30 /DA1 , P31/DA2 I/O port P3 * * * * * * 8 bit CMOS I/O port I/O direction register allows each pin to be individually programmed as either input or output. At reset this port is set to input mode. In modes other than single-chip, these pins are used as address, data, and control bus I/O pins. CMOS compatible input level CMOS 3-state output structure * D-A conversion output pins P32-P37 P40/INT4, P41/INT0, P42/INT1, P43/INT2 I/O port P4 * 8-bit CMOS I/O port with the same function as port P0 * CMOS compatible input level * CMOS 3-state output structure P44/RXD, P45/T XD, P46/SCLK1 , P47/SRDY1 P50/SIN2 , P51/SOUT2, P52/SCLK2 , P53/SRDY2 * External interrupt input pin * Serial I/O1 I/O pins I/O port P5 * 8-bit CMOS I/O port with the same function as port P0 * CMOS compatible input level * CMOS 3-state output structure * Serial I/O2 I/O pins P54/CNTR0, P55/CNTR 1 * Timer X and Timer Y I/O pins P56/PWM * PWM output pin P57/INT3 * External interrupt input pin P60/AN0- P67/AN7 I/O port P6 * 8-bit CMOS I/O port with the same function as port P0 * CMOS compatible input level * CMOS 3-state output structure 3802 GROUP USER'S MANUAL * A-D conversion input pins 1-5 HARDWARE PART NUMBERING PART NUMBERING Product M3802 2 M 4 - XXX SP Package type SP : 64P4B package FP : 64P6N-A package SS : 64S1B-E package FS : 64D0 package ROM number Omitted in some types. Normally, using hyphen. When electrical characteristic, or division of quality identification code using alphanumeric character - : standard D : Extended operating temperature version ROM/PROM size 1 : 4096 bytes 2 : 8192 bytes 3 : 12288 bytes 4 : 16384 bytes 5 : 20480 bytes 6 : 24576 bytes 7 : 28672 bytes 8 : 32768 bytes The first 128 bytes and the last 2 bytes of ROM are reserved areas ; they cannot be used. Memory type M : Mask ROM version E : EPROM or One Time PROM version RAM size 0 : 192 bytes 1 : 256 bytes 2 : 384 bytes 3 : 512 bytes 4 : 640 bytes 5 : 768 bytes 6 : 896 bytes 7 : 1024 bytes Fig.4 Part numbering 1-6 3802 GROUP USER'S MANUAL HARDWARE GROUP EXPANSION GROUP EXPANSION (2) Packages 64P4B ............................................ Shrink plastic molded DIP 64P6N-A ................................................... Plastic molded QFP 64S1B-E .................................................... Shrink ceramic DIP 64D0 ................................................................... Ceramic LCC Mitsubishi plans to expand the 3802 group as follows: (1) Support for mask ROM, One Time PROM, and EPROM versions ROM/PROM capacity ................................... 8 K to 32 K bytes RAM capacity .............................................. 384 to 1024 bytes Memory Expansion Plan Mass product ROM size (bytes) 32K M38027M8/E8 28K Mass product 24K M38024M6 20K Mass product 16K M38022M4 12K Mass product 8K M38022M2 4K 192 256 384 512 640 768 896 1024 RAM size (bytes) Fig. 5 Memory expansion plan Currently supported products are listed below Table 2. List of supported products (P) ROM size (bytes) Product ROM size for User in ( ) M38022M2-XXXSP M38022M2-XXXFP M38022M4-XXXSP M38022M4-XXXFP M38024M6-XXXSP M38024M6-XXXFP M38027M8-XXXSP M38027E8-XXXSP M38027E8SP M38027M8-XXXFP M38027E8-XXXFP M38027E8FP M38027E8SS M38027E8FS As of May 1996 RAM size (bytes) 8192 (8062) 384 16384 (16254) 384 24576 (24446) 640 Package 64P4B 64P6N-A 64P4B 64P6N-A 64P4B 64P6N-A 64P4B 32768 (32638) 1024 64P6N-A 64S1B-E 64D0 Remarks Mask ROM version Mask ROM version Mask ROM version Mask ROM version Mask ROM version Mask ROM version Mask ROM version One Time PROM version One Time PROM version (blank) Mask ROM version One Time PROM version One Time PROM version (blank) EPROM version EPROM version 3802 GROUP USER'S MANUAL 1-7 HARDWARE GROUP EXPANSION GROUP EXPANSION (Extended operating temperature version) Mitsubishi plans to expand the 3802 group (extended operating temperature version) as follows: (1) Support for mask ROM One Time PROM, and EPROM versions ROM/PROM capacity ................................... 8 K to 32 K bytes RAM capacity .............................................. 384 to 1024 bytes (2) Packages 64P4B ............................................ Shrink plastic molded DIP 64P6N-A ................................................... Plastic molded QFP Memory Expansion Plan (Extended operating temperature version) Mass product ROM size (bytes) 32K M38027M8D/E8D 28K 24K 20K Mass product 16K M38022M4D 12K Mass product 8K M38022M2D 4K 192 256 384 512 640 768 896 1024 RAM size (bytes) Fig. 6 Memory expansion plan (Extended operating temperature version) Currently supported products are listed below. Table 3. List of supported products (Extended operating temperature version) (P) ROM size (bytes) RAM size (bytes) Package Product M38022M2DXXXSP M38022M2DXXXFP M38022M4DXXXSP M38022M4DXXXFP M38027M8DXXXSP M38027E8DXXXSP M38027E8DSP M38027M8DXXXFP M38027E8DXXXFP M38027E8DFP 1-8 8192 (8062) 16384 (16254) 384 384 64P4B 64P6N-A 64P4B 64P6N-A 64P4B 32768 (32638) 1024 64P6N-A As of May 1996 Remarks Mask ROM version Mask ROM version Mask ROM version Mask ROM version Mask ROM version One Time PROM version One Time PROM version (blank) Mask ROM version One Time PROM version One Time PROM version (blank) 3802 GROUP USER'S MANUAL HARDWARE FUNCTIONAL DESCRIPTION FUNCTIONAL DESCRIPTION Central Processing Unit (CPU) Stack pointer (S) The stack pointer is an 8-bit register used during sub-routine calls and interrupts. The stack is used to store the current address data and processor status when branching to subroutines or interrupt routines. The lower eight bits of the stack address are determined by the contents of the stack pointer. The upper eight bits of the stack address are determined by the Stack Page Selection Bit. If the Stack Page Selection Bit is "0", then the RAM in the zero page is used as the stack area. If the Stack Page Selection Bit is "1", then RAM in page 1 is used as the stack area. The Stack Page Selection Bit is located in the SFR area in the zero page. Note that the initial value of the Stack Page Selection Bit varies with each microcomputer type. Also some microcomputer types have no Stack Page Selection Bit and the upper eight bits of the stack address are fixed. The operations of pushing register contents onto the stack and popping them from the stack are shown in Fig.7. The 3802 group uses the standard 740 family instruction set. Refer to the table of 740 family addressing modes and machine instructions or the SERIES 740 <Software> Users Manual for details on the instruction set. Machine-resident 740 family instructions are as follows: The FST and SLW instructions cannot be used. The MUL, DIV, WIT and STP instruction can be used. The central processing unit (CPU) has the six registers. Accumulator (A) The accumulator is an 8-bit register. Data operations such as data transfer, etc., are executed mainly through the accumulator. Index register X (X), Index register Y (Y) Both index register X and index register Y are 8-bit registers. In the index addressing modes, the value of the OPERAND is added to the contents of register X or register Y and specifies the real address. When the T flag in the processor status register is set to "1", the value contained in index register X becomes the address for the second OPERAND. b7 Program counter (PC) The program counter is a 16-bit counter consisting of two 8-bit registers PCH and PCL. It is used to indicate the address of the next instruction to be executed. b0 Accumulator A b7 b0 Index Register X X b7 b0 Index Register Y Y b7 b0 Stack Pointer S b15 b7 PCH b0 Program Counter PCL b7 b0 N V T B D I Z C Processor Status Register (PS) Carry Flag Zero Flag Interrupt Disable Flag Decimal Mode Flag Break Flag Index X Mode Flag Overflow Flag Negative Flag Fig. 7. 740 Family CPU register structure 3802 GROUP USER'S MANUAL 1-9 HARDWARE FUNCTIONAL DESCRIPTION On-going Routine Interrupt request (Note 1) M (S) (PCH) (S) (S - 1) M (S) (PCL) (S) (S - 1) M (S) (PS) (S) (S - 1) Execute JSR M (S) Store Return Address on Stack (Note 2) (S) M (S) (S) (PCH) (S - 1) (PCL) (S - 1) Subroutine Interrupt Service Routine Execute RTS Restore Return Address (S) (PCL) Execute RTI (S + 1) (S) (S + 1) (PS) M (S) (S) (S + 1) (PCL) M (S) (S) (S + 1) (PCH) M (S) M (S) (S) (S + 1) (PCH) M (S) Store Return Address on Stack (Note 2) Store Contents of Processor Status Register on Stack I Flag "0" to "1" Fetch the Jump Vector Restore Contents of Processor Status Register Restore Return Address Note 1 : The condition to enable the interrupt Interrupt enable bit is "1" Interrupt disable flag is "0" 2 : When an interrupt occurs, the address of the next instruction to be executed is stored in the stack area. When a subroutine is called, the address one before the next instruction to be executed is stored in the stack area. Fig. 8. Register push and pop at interrupt generation and subroutine call Table. 4. Push and pop instructions of accumulator or processor status register Accumulator Processor status register 1-10 Push instruction to stack Pop instruction from stack PHA PHP PLA PLP 3802 GROUP USER'S MANUAL HARDWARE FUNCTIONAL DESCRIPTION Processor status register (PS) The processor status register is an 8-bit register consisting of flags which indicate the status of the processor after an arithmetic operation. Branch operations can be performed by testing the Carry (C) flag, Zero (Z) flag, Overflow (V) flag, or the Negative (N) flag. In decimal mode, the Z, V, N flags are not valid. After reset, the Interrupt disable (I) flag is set to "1", but all other flags are undefined. Since the Index X mode (T) and Decimal mode (D) flags directly affect arithmetic operations, they should be initialized in the beginning of a program. (1) Carry flag (C) The C flag contains a carry or borrow generated by the arithmetic logic unit (ALU) immediately after an arithmetic operation. It can also be changed by a shift or rotate instruction. (2) Zero flag (Z) The Z flag is set if the result of an immediate arithmetic operation or a data transfer is "0", and cleared if the result is anything other than "0". (3) Interrupt disable flag (I) The I flag disables all interrupts except for the interrupt generated by the BRK instruction. Interrupts are disabled when the I flag is "1". When an interrupt occurs, this flag is automatically set to "1" to prevent other interrupts from interfering until the current interrupt is serviced. (4) Decimal mode flag (D) The D flag determines whether additions and subtractions are executed in binary or decimal. Binary arithmetic is executed when this flag is "0"; decimal arithmetic is executed when it is "1". Decimal correction is automatic in decimal mode. Only the ADC and SBC instructions can be used for decimal arithmetic. (5) Break flag (B) The B flag is used to indicate that the current interrupt was generated by the BRK instruction. The BRK flag in the processor status register is always "0". When the BRK instruction is used to generate an interrupt, the processor status register is pushed onto the stack with the break flag set to "1". The saved processor status is the only place where the break flag is ever set. (6) Index X mode flag (T) When the T flag is "0", arithmetic operations are performed between accumulator and memory, e.g. the results of an operation between two memory locations is stored in the accumulator. When the T flag is "1", direct arithmetic operations and direct data transfers are enabled between memory locations, i.e. between memory and memory, memory and I/O, and I/O and I/O. In this case, the result of an arithmetic operation performed on data in memory location 1 and memory location 2 is stored in memory location 1. The address of memory location 1 is specified by index register X, and the address of memory location 2 is specified by normal addressing modes. (7) Overflow flag (V) The V flag is used during the addition or subtraction of one byte of signed data. It is set if the result exceeds +127 to -128. When the BIT instruction is executed, bit 6 of the memory location operated on by the BIT instruction is stored in the overflow flag. (8) Negative flag (N) The N flag is set if the result of an arithmetic operation or data transfer is negative. When the BIT instruction is executed, bit 7 of the memory location operated on by the BIT instruction is stored in the negative flag. Table. 5. Set and clear instructions of each bit of processor status register C flag Set instruction Clear instruction SEC CLC Z flag _ _ I flag SEI CLI D flag SED CLD 3802 GROUP USER'S MANUAL B flag _ _ T flag SET CLT V flag _ CLV N flag _ _ 1-11 HARDWARE FUNCTIONAL DESCRIPTION CPU Mode Register The CPU mode register is allocated at address 003B 16. The CPU mode register contains the stack page selection bit. b7 b0 CPU mode register (CPUM : address 003B16) Processor mode bits b1 b0 0 0 : Single-chip mode 0 1 : Memory expansion mode 1 0 : Microprocessor mode 1 1 : Not available Stack page selection bit 0 : 0 page 1 : 1 page Not used (return "0" when read) Fig. 9. Structure of CPU mode register 1-12 3802 GROUP USER'S MANUAL HARDWARE FUNCTIONAL DESCRIPTION Zero page Memory Special function register (SFR) area The 256 bytes from addresses 0000 16 to 00FF16 are called the zero page area. The internal RAM and the special function registers (SFR) are allocated to this area. The zero page addressing mode can be used to specify memory and register addresses in the zero page area. Access to this area with only 2 bytes is possible in the zero page addressing mode. The Special Function Register area in the zero page contains control registers such as I/O ports and timers. RAM RAM is used for data storage and for stack area of subroutine calls and interrupts. Special page ROM The 256 bytes from addresses FF0016 to FFFF 16 are called the special page area. The special page addressing mode can be used to specify memory addresses in the special page area. Access to this area with only 2 bytes is possible in the special page addressing mode. The first 128 bytes and the last 2 bytes of ROM are reserved for device testing and the rest is user area for storing programs. Interrupt vector area The interrupt vector area contains reset and interrupt vectors. RAM area RAM capacity (bytes) 192 256 384 512 640 768 896 1024 Address XXXX16 000016 SFR area 00FF16 013F16 01BF16 023F16 02BF16 033F16 03BF16 043F16 Zero page 004016 RAM 010016 XXXX16 Reserved area 044016 ROM area ROM capacity (bytes) 4096 8192 12288 16384 20480 24576 28672 32768 Not used Address YYYY16 Address ZZZZ16 F00016 E00016 D00016 C00016 B00016 A00016 900016 800016 F08016 E08016 D08016 C08016 B08016 A08016 908016 808016 YYYY16 Reserved ROM area (128 bytes) ZZZZ16 ROM FF0016 FFDC16 Interrupt vector area FFFE16 FFFF16 Special page Reserved ROM area Fig. 10 Memory map diagram 3802 GROUP USER'S MANUAL 1-13 HARDWARE FUNCTIONAL DESCRIPTION 000016 Port P0 (P0) 002016 Prescaler 12 (PRE12) 000116 Port P0 direction register (P0D) 002116 Timer 1 (T1) 000216 Port P1 (P1) 002216 Timer 2 (T2) 000316 Port P1 direction register (P1D) 002316 Timer XY mode register (TM) 000416 Port P2 (P2) 002416 Prescaler X (PREX) 000516 Port P2 direction register (P2D) 002516 Timer X (TX) 000616 Port P3 (P3) 002616 Prescaler Y (PREY) 000716 Port P3 direction register (P3D) 002716 Timer Y (TY) 000816 Port P4 (P4) 002816 000916 Port P4 direction register (P4D) 002916 000A16 Port P5 (P5) 002A16 000B16 Port P5 direction register (P5D) 002B16 PWM control register (PWMCON) 000C16 Port P6 (P6) 002C16 PMW prescaler (PREPWM) 000D16 Port P6 direction register (P6D) 002D16 PWM register (PWM) 000E16 002E16 000F16 002F16 001016 003016 001116 003116 001216 003216 001316 003316 001416 003416 AD/DA control register (ADCON) 001516 003516 A-D conversion register (AD) 001616 003616 D-A1 conversion register (DA1) 001716 003716 D-A2 conversion register (DA2) 001816 Transmit/Receive buffer register (TB/RB) 003816 001916 Serial I/O1 status register (SIO1STS) 003916 001A16 Serial I/O1 control register (SIO1CON) 003A16 Interrupt edge selection register 001B16 UART control register (UARTCON) 003B16 CPU mode register (CPUM) 001C16 Baud rate generator (BRG) 003C16 Interrupt request register 1(IREQ1) 001D16 Serial I/O2 control register (SIO2CON) 003D16 Interrupt request register 2(IREQ2) 001E16 001F16 Serial I/O2 register (SIO2) 003E16 Interrupt control register 1(ICON1) 003F16 Interrupt control register 2(ICON2) Fig. 11 Memory map of special function register (SFR) 1-14 (INTEDGE) 3802 GROUP USER'S MANUAL HARDWARE FUNCTIONAL DESCRIPTION I/O Ports Direction registers The 3802 group has 56 programmable I/O pins arranged in seven I/O ports (ports P0 to P6). The I/O ports have direction registers which determine the input/output direction of each individual pin. Each bit in a direction register corresponds to one pin, each pin can be set to be input port or output port. When "0" is written to the bit corresponding to a pin, that pin becomes an input pin. When "1" is written to that bit, that pin becomes an output pin. If data is read from a pin which is set to output, the value of the port output latch is read, not the value of the pin itself. Pins set to input are floating. If a pin set to input is written to, only the port output latch is written to and the pin remains floating. Table 6. list of I/O port functions Pin Name Input/Output P00 -P07 Port P0 Input/output, individual bits P10 -P17 Port P1 Input/output, individual bits P20 -P27 Port P2 Input/output, individual bits Port P3 Input/output, individual bits P30/DA1 P31/DA2 P32 -P37 P40 /INT4 , P41 /INT0 , P43 /INT2 P44/RXD, P45/TXD, P46 /SCLK1 , P47/SRDY1 P50 /SIN2 , P51 /SOUT2, P52 /SCLK2 , P53/SRDY2 P54 /CNTR0 , P55 /CNTR1 P56 /PWM P57 /INT3 P60 /AN0- P67 /AN7 Port P4 Port P5 Port P6 Input/output, individual bits Input/output, individual bits Input/output, individual bits I/O Format CMOS 3-state output CMOS compatible input level CMOS 3-state output CMOS compatible input level CMOS 3-state output CMOS compatible input level CMOS 3-state output CMOS compatible input level CMOS 3-state output CMOS compatible input level CMOS 3-state output CMOS compatible input level CMOS 3-state output CMOS compatible input level Non-Port Function Related SFRs Address low-order byte output CPU mode register Address high-order byte output CPU mode register Data bus I/O CPU mode register D-A conversion output AD/DA control register CPU mode register CPU mode register Control signal I/O External interrupt input Interrupt edge selection register Serial I/O1 function I/O Serial I/O1 control register UART control register Serial I/O2 function I/O Serial I/O2 control register Timer X and Timer Y function I/O PWM output External interrupt input A-D conversion input Ref.No. (1) (2) (1) (3) (4) (5) (6) (7) (8) (9) (10) (11) Timer XY mode register (12) PWM control register Interrupt edge selection register (13) (3) (14) Note 1: For details of the functions of ports P0 to P3 in modes other than single-chip mode, and how to use double-function ports as function I/O ports, refer to the applicable sections. 2: Make sure that the input level at each pin is either 0 V or VCC during execution of the STP instruction. When an input level is at an intermediate potential, a current will flow from VCC to VSS through the input-stage gate. 3802 GROUP USER'S MANUAL 1-15 HARDWARE FUNCTIONL DESCRIPTION (1) Ports P0, P1, P2, P32-P37 (2) Ports P30, P31 Direction register Direction register Port latch Data bus Port latch Data bus D-A conversion output DA1 output enable bit (P3 0) DA2 output enable bit (P3 1) (3) Ports P40-P43, P57 (4) Port P44 Serial I/O1 enable bit Receive enable bit Direction register Direction register Port latch Data bus Port latch Data bus Interrupt input Serial I/O1 input (5) Port P45 (6) Port P46 Serial I/O1 synchronous clock selection bit Serial I/O1 enable bit P45/TXD P-channel output disable bit Serial I/O1 enable bit Transmit enable bit Serial I/O1 mode selection bit Serial I/O1 enable bit Direction register Direction register Port latch Data bus Port latch Data bus Serial I/O1 output Serial I/O1 clock output (7) Port P47 (8) Port P50 Serial I/O1 mode selection bit Serial I/O1 enable bit SRDY1 output enable bit Direction register Direction register Data bus Data bus Port latch Port latch Serial I/O2 input Serial I/O1 ready output Fig. 12 Port block diagram (single-chip mode) (1) 1-16 3802 GROUP USER'S MANUAL Serial I/O1 external clock input HARDWARE FUNCTIONAL DESCRIPTION (9) Port P51 (10) Port P52 P51/SOUT2 P-channel output disable bit Serial I/O2 synchronous clock selection bit Serial I/O2 port selection bit Serial I/O2 transmit end signal Serial I/O2 port selection bit Direction register Direction register Port latch Data bus Port latch Data bus Serial I/O2 clock output Serial I/O2 output Serial I/O2 external clock input (11) Port P53 (12) Ports P54, 55 SRDY2 output enable bit Direction register Direction register Data bus Port latch Port latch Data bus Pulse output mode Serial I/O2 ready output Timer output CNTR0, CNTR1 Interrupt input (13) Port P56 (14) Port P6 PWM output enable bit Direction register Direction register Data bus Data bus Port latch Port latch A-D conversion input PWM output Analog input pin selection bit Fig. 13 Port block diagram (single-chip mode) (2) 3802 GROUP USER'S MANUAL 1-17 HARDWARE FUNCTIONAL DESCRIPTION INTERRUPTS Interrupt operation Interrupts occur by sixteen sources: seven external, eight internal, and one software. When an interrupt is received, the contents of the program counter and processor status register are automatically stored into the stack. The interrupt disable flag is set to inhibit other interrupts from interfering.The corresponding interrupt request bit is cleared and the interrupt jump destination address is read from the vector table into the program counter. Interrupt control Each interrupt is controlled by an interrupt request bit, an interrupt enable bit, and the interrupt disable flag except for the software interrupt set by the BRK instruction. An interrupt occurs if the corresponding interrupt request and enable bits are "1" and the interrupt disable flag is "0". Interrupt enable bits can be set or cleared by software. Interrupt request bits can be cleared by software, but cannot be set by software. The BRK instruction cannot be disabled with any flag or bit. The I (interrupt disable) flag disables all interrupts except the BRK instruction interrupt. When several interrupts occur at the same time, the interrupts are received according to priority. Notes on use When the active edge of an external interrupt (INT 0 to INT 4 , CNTR0 , or CNTR1 ) is changed, the corresponding interrupt request bit may also be set. Therefore, please take following sequence; (1) Disable the external interrupt which is selected. (2) Change the active edge selection. (3) Clear the interrupt request bit which is selected to "0". (4) Enable the external interrupt which is selected. Table 7. Interrupt vector addresses and priority Reset (Note 2) 1 INT 0 2 FFFB16 FFFA16 INT 1 3 FFF916 FFF816 Serial I/O1 reception 4 FFF716 FFF616 Serial I/O1 transmission 5 FFF516 FFF416 Timer X Timer Y Timer 1 Timer 2 6 7 8 9 FFF316 FFF116 FFEF16 FFED16 FFF216 FFF016 FFEE 16 FFEC16 CNTR 0 10 FFEB 16 FFEA 16 CNTR 1 11 FFE916 FFE816 Serial I/O2 12 FFE716 FFE616 INT 2 13 FFE516 FFE416 INT 3 14 FFE316 FFE216 INT 4 15 FFE116 FFE016 A-D converter 16 FFDF 16 FFDE16 Interrupt Request Generating Conditions At reset At detection of either rising or falling edge of INT0 input At detection of either rising or falling edge of INT1 input At completion of serial I/O1 data reception At completion of serial I/O1 transfer shift or when transmission buffer is empty At timer X underflow At timer Y underflow At timer 1 underflow At timer 2 underflow At detection of either rising or falling edge of CNTR0 input At detection of either rising or falling edge of CNTR1 input At completion of serial I/O2 data transfer At detection of either rising or falling edge of INT2 input At detection of either rising or falling edge of INT3 input At detection of either rising or falling edge of INT4 input At completion of A-D conversion BRK instruction 17 FFDD 16 FFDC16 At BRK instruction execution Interrupt Source Priority Vector Addresses (Note 1) High Low FFFD 16 FFFC 16 Note 1: Vector addresses contain interrupt jump destination addresses. 2: Reset function in the same way as an interrupt with the highest priority. 1-18 3802 GROUP USER'S MANUAL Remarks Non-maskable External interrupt (active edge selectable) External interrupt (active edge selectable) Valid when serial I/O1 is selected Valid when serial I/O1 is selected STP release timer underflow External interrupt (active edge selectable) External interrupt (active edge selectable) Valid when serial I/O2 is selected External interrupt (active edge selectable) External interrupt (active edge selectable) External interrupt (active edge selectable) Non-maskable software interrupt HARDWARE FUNCTIONAL DESCRIPTION Interrupt request bit Interrupt enable bit Interrupt disable flag (I) BRK instruction Reset Interrupt request Fig. 14 Interrupt control b7 b0 Interrupt edge selection register (INTEDGE : address 003A16) INT0 active edge selection bit INT1 active edge selection bit Not used (returns "0" when read) INT2 active edge selection bit INT3 active edge selection bit INT4 active edge selection bit Not used (returns "0" when read) b7 0 : Falling edge active 1 : Rising edge active b0 Interrupt request register 1 (IREQ1 : address 003C16) b7 b0 Interrupt request register 2 (IREQ2 : address 003D16) CNTR0 interrupt request bit CNTR1 interrupt request bit Serial I/O2 interrupt request bit INT2 interrupt request bit INT3 interrupt request bit INT4 interrupt request bit AD converter interrupt request bit Not used (returns "0" when read) INT0 interrupt request bit INT1 interrupt request bit Serial I/O1 receive interrupt request bit Serial I/O1 transmit interrupt request bit Timer X interrupt request bit Timer Y interrupt request bit Timer 1 interrupt request bit Timer 2 interrupt request bit 0 : No interrupt request issued 1 : Interrupt request issued b7 b0 Interrupt control register 1 (ICON1 : address 003E16) b7 INT0 interrupt enable bit INT1 interrupt enable bit Serial I/O1 receive interrupt enable bit Serial I/O1 transmit interrupt enable bit Timer X interrupt enable bit Timer Y interrupt enable bit Timer 1 interrupt enable bit Timer 2 interrupt enable bit b0 Interrupt control register 2 (ICON2 : address 003F16) CNTR0 interrupt enable bit CNTR1 interrupt enable bit Serial I/O2 interrupt enable bit INT2 interrupt enable bit INT3 interrupt enable bit INT4 interrupt enable bit AD converter interrupt enable bit Not used (returns "0" when read) (Do not write "1" to this bit) 0 : Interrupts disabled 1 : Interrupts enabled Fig. 15 Structure of interrupt-related registers 3802 GROUP USER'S MANUAL 1-19 HARDWARE FUNCTIONAL DESCRIPTION Timers Timer 1 and Timer 2 The 3802 group has four timers: timer X, timer Y, timer 1, and timer 2. All timers are count down. When the timer reaches "0016 ", an underflow occurs at the next count pulse and the corresponding timer latch is reloaded into the timer and the count is continued. When a timer underflows, the interrupt request bit corresponding to that timer is set to "1". The division ratio of each timer or prescaler is given by 1/(n + 1), where n is the value in the corresponding timer or prescaler latch. The count source of prescaler 12 is the oscillation frequency divided by 16. The output of prescaler 12 is counted by timer 1 and timer 2, and a timer underflow sets the interrupt request bit. b7 b0 Timer XY mode register (TM : address 002316) Timer X operating mode bit b1b0 0 0: Timer mode 0 1: Pulse output mode 1 0: Event counter mode 1 1: Pulse width measurement mode CNTR0 active edge switch bit 0: Interrupt at falling edge Count at rising edge in event counter mode 1: Interrupt at rising edge Count at falling edge in event counter mode Timer X count stop bit 0: Count start 1: Count stop Timer Y operating mode bit b4b5 0 0: Timer mode 0 1: Pulse output mode 1 0: Event counter mode 1 1: Pulse width measurement mode CNTR1 active edge switch bit 0: Interrupt at falling edge Count at rising edge in event counter mode 1: Interrupt at rising edge Count at falling edge in event counter mode Timer Y count stop bit 0: Count start 1: Count stop Timer X and Timer Y Timer X and Timer Y can each be selected in one of four operating modes by setting the timer XY mode register. Timer Mode The timer counts f(XIN)/16 in timer mode. Pulse Output Mode Timer X (or timer Y) counts f(XIN )/16. Whenever the contents of the timer reach "0016 ", the signal output from the CNTR0 (or CNTR 1 ) pin is inverted. If the CNTR 0 (or CNTR1 ) active edge switch bit is "0", output begins at " H". If it is "1", output starts at "L". When using a timer in this mode, set the corresponding port P54 ( or port P5 5) direction register to output mode. Event Counter Mode Operation in event counter mode is the same as in timer mode, except the timer counts signals input through the CNTR 0 or CNTR1 pin. Pulse Width Measurement Mode If the CNTR0 (or CNTR1) active edge selection bit is "0", the timer counts at the oscillation frequency divided by 16 while the CNTR0 (or CNTR1 ) pin is at "H". If the CNTR0 (or CNTR1 ) active edge switch bit is "1", the count continues during the time that the CNTR0 (or CNTR1 ) pin is at "L". In all of these modes, the count can be stopped by setting the timer X (timer Y) count stop bit to "1". Every time a timer underflows, the corresponding interrupt request bit is set. Fig. 16 Structure of timer XY register 1-20 3802 GROUP USER'S MANUAL HARDWARE FUNCTIONAL DESCRIPTION Data bus Oscillator Divider f(XIN ) 1/16 Pulse width measurement mode P54/CNTR0 pin CNTR0 active edge switch bit "0" Timer X latch (8) Prescaler X (8) Timer X (8) Event counter mode Timer X count stop bit CNTR0 active edge switch bit Q "1" "0" Port P5 4 latch Toggle flip- flop Q Timer X latch write pulse Pulse output mode Data bus Pulse width measurement mode CNTR1 active edge switch bit "0" Prescaler Y latch (8) Timer Y latch (8) Prescaler Y (8) Timer Y (8) Timer mode Pulse output mode Event counter mode To timer Y interrupt request bit Timer Y count stop bit To CNTR 1 interrupt request bit "1" CNTR1 active edge switch bit Q "1" Port P55 direction register T R Pulse output mode P55/CNTR1 pin To timer X interrupt request bit To CNTR 0 interrupt request bit "1" Port P54 direction register Prescaler X latch (8) Timer mode Pulse output mode Port P5 5 latch "0" Toggle flip- flop Q T R Timer Y latch write pulse Pulse output mode Pulse output mode Data bus Prescaler 12 latch (8) Timer 1 latch (8) Timer 2 latch (8) Prescaler 12 (8) Timer 1 (8) Timer 2 (8) To timer 2 interrupt request bit To timer 1 interrupt request bit Fig. 17 Block diagram of timer X, timer Y, timer 1, and timer 2 3802 GROUP USER'S MANUAL 1-21 HARDWARE FUNCTIONAL DESCRIPTION Serial I/O Serial I/O1 Clock synchronous serial I/O mode Clock synchronous serial I/O1 mode can be selected by setting the mode selection bit of the serial I/O1 control register to "1". For clock synchronous serial I/O1, the transmitter and the receiver must use the same clock. If an internal clock is used, transfer is started by a write signal to the TB/RB (address 001816). Serial I/O1 can be used as either clock synchronous or asynchronous (UART) serial I/O. A dedicated timer is also provided for baud rate generation. Data bus Serial I/O1 control register Address 0018 16 Receive buffer Receive interrupt request (RI) Receive shift register P44/RXD Address 001A 16 Receive buffer full flag (RBF) Shift clock Clock control circuit P46/SCLK1 f(X IN) XIN Serial I/O1 synchronous clock selection bit Frequency division ratio 1/(n+1) BRG count source selection bit Baud rate generator Address 001C 16 1/4 P47/SRDY1 F/F 1/4 Clock control circuit Falling-edge detector Shift clock P45/TXD Transmit shift completion flag (TSC) Transmit interrupt source selection bit Transmit interrupt request (TI) Transmit shift register Transmit buffer Transmit buffer empty flag (TBE) Serial I/O1 status register Address 0019 16 Address 0018 16 Data bus Fig. 18 Block diagram of clock synchronous serial I/O1 Transfer shift clock (1/2 to 1/2048 of the internal clock, or an external clock) Serial output TxD D0 D1 D2 D3 D4 D5 D6 D7 Serial input RxD D0 D1 D2 D3 D4 D5 D6 D7 Receive enable signal SRDY1 Write pulse to receive/transmit buffer (address 0018 16) TBE = 0 TBE = 1 TSC = 0 RBF = 1 TSC = 1 Overrun error (OE) detection Notes 1 : The transmit interrupt (TI) can be selected to occur either when the transmit buffer has emptied (TBE=1) or after the transmit shift operation has ended (TSC=1), by setting the transmit interrupt source selection bit (TIC) of the serial I/O1 control register. 2 : If data is written to the transmit buffer when TSC=0, the transmit clock is generated continuously and serial data is output continuously from the TxD pin. 3 : The receive interrupt (RI) is set when the receive buffer full flag (RBF) becomes "1" . Fig. 19 Operation of clock synchronous serial I/O1 function 1-22 3802 GROUP USER'S MANUAL HARDWARE FUNCTIONAL DESCRIPTION Asynchronous serial I/O (UART) mode two buffers have the same address in memory. Since the shift register cannot be written to or read from directly, transmit data is written to the transmit buffer, and receive data is read from the receive buffer. The transmit buffer can also hold the next data to be transmitted, and the receive buffer can hold a character while the next character is being received. Clock asynchronous serial I/O mode (UART) can be selected by clearing the serial I/O mode selection bit of the serial I/O control register to "0". Eight serial data transfer formats can be selected, and the transfer formats used by a transmitter and receiver must be identical. The transmit and receive shift registers each have a buffer, but the Data bus Address 0018 16 Serial I/O1 control register Address 001A16 Receive buffer OE Character length selection bit P44/RXD STdetector 7 bits Receive buffer full flag (RBF) Receive interrupt request (RI) Receive shift register 1/16 8 bits PE FE SP detector Clock control circuit UART control register Address 001B16 Serial I/O1 synchronous clock selection bit P46/SCLK1 f(XIN) BRG count source selection bit Frequency division ratio 1/(n+1) Baud rate generator Address 001C 16 1/4 ST/SP/PA generator Transmit shift completion flag (TSC) 1/16 Transmit shift register P45/TXD Transmit interrupt source selection bit Transmit interrupt request (TI) Character length selection bit Transmit buffer Address 001816 Transmit buffer empty flag (TBE) Serial I/O1 status register Address 001916 Data bus Fig. 20 Block diagram of UART serial I/O 3802 GROUP USER'S MANUAL 1-23 HARDWARE FUNCTIONAL DESCRIPTION Transmit or receive clock Transmit buffer write signal TBE=0 TSC=0 TBE=1 Serial output TXD TBE=0 TSC=1 TBE=1 ST D0 D1 SP ST D0 Receive buffer read signal SP D1 1 start bit 7 or 8 data bit 1 or 0 parity bit 1 or 2 stop bit (s) Generated at 2nd bit in 2-stop-bit mode RBF=0 RBF=1 Serial input RXD ST D0 D1 SP RBF=1 ST D0 D1 SP Notes 1: Error flag detection occurs at the same time that the RBF flag becomes "1" (at 1st stop bit, during reception). 2: The transmit interrupt (TI) can be selected to occur when either the TBE or TSC flag becomes "1", depending on the setting of the transmit interrupt source selection bit (TIC) of the serial I/O control register. 3: The receive interrupt (RI) is set when the RBF flag becomes "1". 4: After data is written to the transmit buffer when TSC=1, 0.5 to 1.5 cycles of the data shift cycle is necessary until changing to TSC=0. Fig. 21 Operation of UART serial I/O function Serial I/O1 control register (SIO1CON) 001A16 The serial I/O control register consists of eight control bits for the serial I/O function. UART control register (UARTCON) 001B16 The UART control register consists of four control bits (bits 0 to 3) which are valid when asynchronous serial I/O is selected and set the data format of an data transfer. One bit in this register (bit 4) is always valid and sets the output structure of the P45/T XD pin. Serial I/O1 status register (SIO1STS) 001916 The read-only serial I/O1 status register consists of seven flags (bits 0 to 6) which indicate the operating status of the serial I/O function and various errors. Three of the flags (bits 4 to 6) are valid only in UART mode. The receive buffer full flag (bit 1) is cleared to "0" when the receive buffer is read. If there is an error, it is detected at the same time that data is transferred from the receive shift register to the receive buffer, and the receive buffer full flag is set. A write to the serial I/O status register clears all the error flags OE, PE, FE, and SE (bit 3 to bit 6, re- 1-24 spectively). Writing "0" to the serial I/O enable bit SIOE (bit 7 of the Serial I/O Control Register) also clears all the status flags, including the error flags. All bits of the serial I/O1 status register are initialized to "0" at reset, but if the transmit enable bit (bit 4) of the serial I/O control register has been set to "1", the transmit shift completion flag (bit 2) and the transmit buffer empty flag (bit 0) become "1". Transmit buffer/Receive buffer register (TB/ RB) 001816 The transmit buffer and the receive buffer are located at the same address. The transmit buffer is write-only and the receive buffer is read-only. If a character bit length is 7 bits, the MSB of data stored in the receive buffer is "0". Baud rate generator (BRG) 001C16 The baud rate generator determines the baud rate for serial transfer. The baud rate generator divides the frequency of the count source by 1/(n + 1), where n is the value written to the baud rate generator. 3802 GROUP USER'S MANUAL HARDWARE FUNCTIONAL DESCRIPTION b7 b0 b7 Serial I/O1 status register (SIO1STS : address 0019 16) Transmit buffer empty flag (TBE) 0: Buffer full 1: Buffer empty Transmit shift completion flag (TSC) 0: Transmit shift in progress 1: Transmit shift completed SRDY1 output enable bit (SRDY) 0: P4 7 pin operates as ordinaly I/O pin 1: P4 7 pin operates as S RDY1 output pin Overrun error flag (OE) 0: No error 1: Overrun error Transmit interrupt source selection bit (TIC) 0: Interrupt when transmit buffer has emptied 1: Interrupt when transmit shift operation is completed Parity error flag (PE) 0: No error 1: Parity error Transmit enable bit (TE) 0: Transmit disabled 1: Transmit enabled Framing error flag (FE) 0: No error 1: Framing error Receive enable bit (RE) 0: Receive disabled 1: Receive enabled Summing error flag (SE) 0: (OE) U (PE) U (FE)=0 1: (OE) U (PE) U (FE)=1 Serial I/O1 mode selection bit (SIOM) 0: Asynchronous serial I/O (UART) 1: Clock synchronous serial I/O Not used (returns "1" when read) b0 Serial I/O1 control register (SIO1CON : address 001A 16) BRG count source selection bit (CSS) 0: f(X IN) 1: f(X IN)/4 Serial I/O1 synchronous clock selection bit (SCS) 0: BRG output divided by 4 when clock synchronous serial I/O is selected, BRG output divided by 16 when UART is selected. 1: External clock input when clock synchronous serial I/O is selected, external clock input divided by 16 when UART is selected. Receive buffer full flag (RBF) 0: Buffer empty 1: Buffer full b7 b0 Serial I/O enable bit (SIOE) 0: Serial I/O disabled (pins P4 4 to P4 7 operate as ordinary I/O pins) 1: Serial I/O enabled (pins P4 4 to P4 7 operate as serial I/O pins) UART control register (UARTCON : address 001B 16) Character length selection bit (CHAS) 0: 8 bits 1: 7 bits Parity enable bit (PARE) 0: Parity checking disabled 1: Parity checking enabled Parity selection bit (PARS) 0: Even parity 1: Odd parity Stop bit length selection bit (STPS) 0: 1 stop bit 1: 2 stop bits P45/TXD P-channel output disable bit (POFF) 0: CMOS output (in output mode) 1: N-channel open drain output (in output mode) Not used (return "1" when read) Fig. 22 Structure of serial I/O control registers 3802 GROUP USER'S MANUAL 1-25 HARDWARE FUNCTIONAL DESCRIPTION Serial I/O2 b7 b0 The serial I/O2 function can be used only for clock synchronous serial I/O. For clock synchronous serial I/O the transmitter and the receiver must use the same clock. If the internal clock is used, transfer is started by a write signal to the serial I/O2 register. Serial I/O2 control register (SIO2CON : address 001D16) Internal synchronous clock selection bits b2 b1 b0 0 0 0: f(XIN)/8 0 0 1: f(XIN)/16 0 1 0: f(XIN)/32 0 1 1: f(XIN)/64 1 1 0: f(XIN)/128 1 1 1: f(XIN)/256 Serial I/O2 control register (SIO2CON) 001D16 The serial I/O2 control register contains seven bits which control various serial I/O functions. Serial I/O2 port selection bit (SM23) 0: I/O port 1: SOUT2,SCLK2 output pin SRDY2 output enable bit (SM24) 0: I/O port 1: SRDY2 output pin Transfer direction selection bit (SM25) 0: LSB first 1: MSB first Serial I/O2 synchronous clock selection bit (SM26) 0: External clock 1: Internal clock P51/SOUT2 P-channel output disable bit 0: CMOS output (in output mode) 1: N-channel open-drain output (in output mode) Fig. 23 Structure of serial I/O2 control register 1/8 Divider 1/16 XIN Internal synchronous clock selection bits 1/32 Data bus 1/64 1/128 1/256 P53 latch Serial I/O2 synchronous clock selection bit P53/SRDY2 SRDY2 "1" Synchronization circuit "1" SRDY2 output enable bit SCLK2 "0" "0" External clock P52 latch "0" P52/SCLK2 "1" Serial I/O2 port selection bit Serial I/O counter 2 (3) P51 latch "0" P51/SOUT2 "1" Serial I/O2 port selection bit P50/SIN2 Serial I/O shift register 2 (8) Fig. 24 Block diagram of serial I/O2 function 1-26 3802 GROUP USER'S MANUAL Serial I/O2 interrupt request HARDWARE FUNCTIONAL DESCRIPTION Transfer clock (Note 1) Serial I/O2 register write signal (Note 2) Serial I/O2 output S OUT2 D0 D1 D2 D3 D4 D5 D6 D7 Serial I/O2 input S IN2 Receive enable signal SRDY2 Serial I/O2 interrupt request bit set Notes 1: When the internal clock is selected as the transfer clock, the divide ratio can be selected by setting bits 0 to 2 of the serial I/O2 control register. 2: When the internal clock is selected as the transfer clock, the S OUT2 pin goes to high impedance after transfer completion. Fig. 25 Timing of serial I/O2 function 3802 GROUP USER'S MANUAL 1-27 HARDWARE FUNCTIONAL DESCRIPTION PULSE WIDTH MODULATION (PWM) PWM Operation The 3802 group has a PWM function with an 8-bit resolution, based on a signal that is the clock input XIN or that clock input divided by 2. When bit 0 (PWM enable bit) of the PWM control register is set to "1", operation starts by initializing the PWM output circuit, and pulses are output starting at an "H". If the PWM register or PWM prescaler is updated during PWM output, the pulses will change in the cycle after the one in which the change was made. Data Setting The PWM output pin also functions as port P56. Set the PWM period by the PWM prescaler, and set the period during which the output pulse is an "H" by the PWM register. If the value in the PWM prescaler is n and the value in the PWM register is m (where n = 0 to 255 and m = 0 to 255) : PWM period = 255 (n+1)/f(XIN) = 51 (n+1) s (when X IN = 5 MHz) Output pulse "H" period = PWM period m/255 = 0.2 (n+1) m s (when XIN = 5 MHz) 51 m (n+1) s 255 PWM output T = [51 (n+1)] s m: Contents of PWM register n : Contents of PWM prescaler T : PWM cycle (when X IN = 5 MHz) Fig. 26 Timing of PWM cycle Data bus PWM prescaler pre-latch PWM register pre-latch Transfer control circuit PWM prescaler latch PWM register latch PWM prescaler PWM register Count source selection bit "0" X IN 1/2 Port P56 "1" Port P56 latch PWM enable bit Fig. 27 Block diagram of PWM function 1-28 3802 GROUP USER'S MANUAL HARDWARE FUNCTIONAL DESCRIPTION b7 b0 PWM control register (PWMCON : address 002B 16) PWM function enable bit 0: PWM disabled 1: PWM enabled Count source selection bit 0: f(XIN) 1: f(XIN)/2 Not used (return "0" when read) Fig. 28 Structure of PWM control register A B B = C T2 T C PWM output T PWM register write signal PWM prescaler write signal T T2 (Changes from "A" to "B" during "H" period) (Changes from "T" to "T2" during PWM period) When the contents of the PWM register or PWM prescaler have changed, the PWM output will change from the next period after the change. Fig. 29 PWM output timing when PWM register or PWM prescaler is changed 3802 GROUP USER'S MANUAL 1-29 HARDWARE FUNCTIONAL DESCRIPTION A-D Converter [Comparator and Control circuit] The functional blocks of the A-D converter are described below. The comparator and control circuit compares an analog input voltage with the comparison voltage, then stores the result in the A-D conversion register. When an A-D conversion is complete, the control circuit sets the AD conversion completion bit and the AD interrupt request bit to "1". Note that the comparator is constructed linked to a capacitor, so set f(XIN) to 500 kHz or more during an A-D conversion. [A-D conversion register] The A-D conversion register is a read-only register that stores the result of an A-D conversion. When reading this register during an A-D conversion, the previous conversion result is read. [AD/DA control register] The AD/DA control register controls the A-D conversion process. Bits 0 to 2 select a specific analog input pin. Bit 3 signals the completion of an A-D conversion. The value of this bit remains at "0" during an A-D conversion, and changes to "1" when an A-D conversion ends. Writing "0" to this bit starts the A-D conversion. Bits 6 and 7 are used to control the output of the D-A converter. b7 b0 AD/DA control register (ADCON : address 0034 16) Analog input pin selection bits b2 b1 b0 0 0 0 0 1 1 1 1 [Comparison voltage generator] The comparison voltage generator divides the voltage between AVSS and VREF into 256, and outputs the divided voltages. [Channel selector] The channel selector selects one of the ports P6 0/AN0 to P67 /AN7, and inputs the voltage to the comparator. 0 0 1 1 0 0 1 1 0: P60/AN0 1: P61/AN1 0: P62/AN2 1: P63/AN3 0: P64/AN4 1: P65/AN5 0: P66/AN6 1: P67/AN7 AD conversion completion bit 0: Conversion in progress 1: Conversion completed Not used (return "0" When read) DA1 output enable bit 0: DA1 output disabled 1: DA1 output enabled DA2 output enable bit 0: DA2 output disabled 1: DA2 output enabled Fig.30 Structure of AD/DA control register Data bus AD/DA control register (Address 0034 16) b7 b0 3 A-D control circuit Channel selector P60/AN0 P61/AN 1 P62/AN 2 P63/AN 3 P64/AN 4 P65/AN 5 P66/AN 6 P67/AN 7 Comparator A-D interrupt request A-D conversion register (Address 0035 16 ) 8 Resistor ladder VREF AV SS Fig. 31 Block diagram of A-D converter 1-30 3802 GROUP USER'S MANUAL HARDWARE FUNCTIONAL DESCRIPTION D-A Converter The 3802 group has two internal D-A converters (DA1 and DA2) with 8-bit resolutions. The D-A converter is performed by setting the value in the D-A conversion register. The result of D-A converter is output from the DA 1 or DA2 pin by setting the DA output enable bit to "1". When using the D-A converter, the corresponding port direction register bit (P30 /DA1 or P31/DA 2 ) should be set to "0" (input status). The output analog voltage V is determined by the value n (base 10) in the D-A conversion register as follows: Data bus D-A1 conversion register (8) V = VREF n/256 (n = 0 to 255) Where VREF is the reference voltage. R-2R resistor ladder DA1 output enable bit P30/DA1 D-A2 conversion register (8) At reset, the D-A conversion registers are cleared to "0016 ", the DA output enable bits are cleared to "0", and the P3 0/DA1 and P31 / DA 2 pins are set to input (high impedance). The D-A output is not buffered, so connect an external buffer when driving a low-impedance load. Set VCC to 3.0 V or more when using the D-A converter. R-2R resistor ladder DA2 output enable bit P31/DA2 Fig. 32 Block diagram of D-A converter "0" DA1 output enable bit R P30/DA1 "1" 2R R 2R R 2R R 2R MSB D-A1 conversion register "0" R 2R R 2R R 2R 2R 2R LSB "1" AV SS VREF Fig. 33 Equivalent connection circuit of D-A converter 3802 GROUP USER'S MANUAL 1-31 HARDWARE FUNCTIONAL DESCRIPTION Reset Circuit To reset the microcomputer, the RESET pin should be held at an "L" level for 2 s or more. Then the RESET pin is returned to an "H" level (the power source voltage should be between 4.0 V and 5.5 V), reset is released. Internal operation begin until after 8 to 13 XIN clock cycles are completed. After the reset is completed, the program starts from the address contained in address FFFD 16 (highorder byte) and address FFFC16 (low-order byte). Make sure that the reset input voltage is less than 0.6 V for VCC of 3.0 V (Extended operating temperature version : the reset input voltage is less than 0.8 V for VCC of 4.0 V). 4.0V Power source 0V voltage 0.8V Reset input 0V voltage VCC 1 5 M51953AL 3 RESET 4 0.1 F VSS 3802 group Fig. 34 Example of reset circuit Address Register contents (1) Port P0 direction register (000116) * * * 0016 (2) Port P1 direction register (000316) * * * 0016 (3) Port P2 direction register (000516) * * * 0016 (4) Port P3 direction register (000716) * * * 0016 (5) Port P4 direction register (000916) * * * 0016 (6) Port P5 direction register (000B16) * * * 0016 (7) Port P6 direction register (000D16) * * * 0016 (8) Serial I/O1 status register (001916) * * * 1 0 0 0 0 0 0 0 (9) Serial I/O1 control register (001A16) * * * (10) UART control register (001B16) * * * 1 1 1 0 0 0 0 0 (11) Serial I/O2 control register (001D16) * * * 0016 (12) Prescaler 12 (002016) * * * FF16 (13) Timer 1 (002116) * * * 0116 (14) Timer 2 (002216) * * * FF16 (15) Timer XY mode register (002316) * * * 0016 (16) Prescaler X (002416) * * * FF16 (17) Timer X (002516) * * * FF16 (18) Prescaler Y (002616) * * * FF16 (19) Timer Y (002716) * * * FF16 (20) PWM control register (002B16) * * * 0016 (21) AD/DA control register (003416) * * * 0 0 0 0 1 0 0 0 (22) D-A1 conversion register (003616) * * * 0016 (23) D-A2 conversion register (003716) * * * 0016 (24) Interrupt edge selection register (003A16) * * * 0016 0016 (25) CPU mode register (003B16) * * * 0 0 0 0 0 0 0 (26) Interrupt request register 1 (003C16) * * * 0016 (27) Interrupt request register 2 (003D16) * * * 0016 (28) Interrupt control register 1 (003E16) * * * 0016 (29) Interrupt control register 2 (003F16) * * * 0016 (30) Processor status register (31) Program counter (PS) 1 (PCH) Contents of address FFFD16 (PCL) Contents of address FFFC16 Note. : Undefined : The initial values of CM 1 are determined by the level at the CNVSS pin. The contents of all other registers and RAM are undefined after a reset, so they must be initialized by software. Fig. 35 Internal status of microcomputer after reset 1-32 3802 GROUP USER'S MANUAL HARDWARE FUNCTIONAL DESCRIPTION XIN RESET RESETOUT (internal reset) SYNC Address ? ? ? ? ? FFFC FFFD ADH, ADL Reset address from the vector table ? Data XIN: 8 to 13 clock cycles ? ? ? ? ADL ADH Notes 1: f(XIN) and f() are in the relationship: f(X IN)=2 * f(). 2: A question mark (?) indicates an undefined status that depends on the previous status. Fig. 36 Timing of reset 3802 GROUP USER'S MANUAL 1-33 HARDWARE FUNCTIONAL DESCRIPTION Clock Generating Circuit An oscillation circuit can be formed by connecting a resonator between XIN and X OUT. To supply a clock signal externally, input it to the X IN pin and make the XOUT pin open. When the STP status is released, prescaler 12 and timer 1 will start counting and reset will not be released until timer 1 underflows, so set the timer 1 interrupt enable bit to "0" before the STP instruction is executed. Oscillation control Stop Mode If the STP instruction is executed, the internal clock stops at an "H". Timer 1 is set to "01 16" and prescaler 12 is set to "FF 16". Oscillator restarts when an external interrupt is received, but the internal clock remains at an "H" until timer 1 underflow. This allows time for the clock circuit oscillation to stabilize. If oscillator is restarted by a reset, no wait time is generated, so keep the RESET pin at an "L" level until oscillation has stabilized. Wait Mode If the WIT instruction is executed, the internal clock stops at an "H" level, but the oscillator itself does not stop. The internal clock restarts if a reset occurs or when an interrupt is received. Since the oscillator does not stop, normal operation can be started immediately after the clock is restarted. To ensure that interrupts will be received to release the STP or WIT state, interrupt enable bits must be set to "1" before the STP or WIT instruction is executed. XIN XOUT CIN COUT Fig. 37 Ceramic resonator circuit XIN XOUT Open Vcc External oscillation circuit Vss Fig. 38 External clock input circuit Interrupt request Interrupt disable flag (I) S Q S Q Q Reset S Reset R STP instruction WIT instruction R STP instruction R output Internal clock ONW pin Single-chip mode ONW control 1/2 1/8 Prescaler 12 Timer 1 Rd FF16 Rf XIN X OUT Fig. 39 Block diagram of clock generating circuit 1-34 3802 GROUP USER'S MANUAL 0116 Reset or STP instruction HARDWARE FUNCTIONAL DESCRIPTION Processor Modes Single-chip mode, memory expansion mode, and microprocessor mode can be selected by changing the contents of the processor mode bits CM 0 and CM 1 (bits 0 and 1 of address 003B 16). In memory expansion mode and microprocessor mode, memory can be expanded externally through ports P0 to P3. In these modes, ports P0 to P3 lose their I/O port functions and become bus pins. Table 8. Functions of ports in memory expansion mode and microprocessor mode Port Name Function Port P0 Outputs low-order byte of address. Port P1 Outputs high-order byte of address. Operates as I/O pins for data D7 to D0 Port P2 (including instruction codes). P30 and P31 function only as output pins (except that the port latch cannot be read). P32 is the ONW input pin. P33 is the RESETOUT output pin. (Note) Port P3 P34 is the output pin. P35 is the SYNC output pin. P36 is the WR output pin, and P3 7 is the RD output pin. 000016 000816 000016 000816 SFR area 004016 SFR area 004016 Internal RAM reserved area Internal RAM reserved area 044016 044016 YYYY16 Internal ROM FFFF16 FFFF16 Memory expansion mode Microprocessor mode The shaded areas are external memory areas. : YYYY16 is the start address of internal ROM. Fig. 40 Memory maps in various processor modes b7 b0 CPU mode register (CPUM : address 003B 16) Note: If CNV SS is connected to V SS , the microcomputer goes to single-chip mode after a reset, so this pin cannot be used as the RESETOUT output pin. Processor mode bits b1 b0 0 0 : Single-chip mode 0 1 : Memory expansion mode 1 0 : Microprocessor mode 1 1 : Not available Single-Chip Mode Select this mode by resetting the microcomputer with CNV SS connected to VSS. Memory Expansion Mode Select this mode by setting the processor mode bits to "01" in software with CNVSS connected to VSS . This mode enables external memory expansion while maintaining the validity of the internal ROM. Internal ROM will take precedence over external memory if addresses conflict. Stack page selection bit 0 : 0 page 1 : 1 page Not used (return "0" when read) Fig. 41 Structure of CPU mode register Microprocessor Mode Select this mode by resetting the microcomputer with CNV SS connected to V CC, or by setting the processor mode bits to "10" in software with CNVSS connected to VSS . In microprocessor mode, the internal ROM is no longer valid and external memory must be used. 3802 GROUP USER'S MANUAL 1-35 HARDWARE FUNCTIONAL DESCRIPTION Bus control with memory expansion The 3802 group has a built-in ONW function to facilitate access to external memory and I/O devices in memory expansion mode or microprocessor mode. If an "L" level signal is input to the ONW pin when the CPU is in a read or write state, the corresponding read or write cycle is extended by one cycle of . During this extended period, the RD or WR signal remains at "L". This extension period is valid only for writing to and reading from addresses 0000 16 to 0007 16 and 044016 to FFFF16 in microprocessor mode, 0440 16 to YYYY16 in memory expansion mode, and only read and write cycles are extended. Read cycle Dummy cycle Write cycle Read cycle Dummy cycle Write cycle AD15 to AD0 RD WR ONW : Period during which ONW input signal is received During this period, the ONW signal must be fixed at either "H" or "L". At all other times, the input level of the ONW signal has no affect on operations. The bus cycles is not extended for an address in the area 000816 to 043F16, regardless of whether the ONW signal is received. Fig. 42 ONW function timing 1-36 3802 GROUP USER'S MANUAL HARDWARE NOTE ON PROGRAMMING NOTES ON PROGRAMMING Processor Status Register Serial I/O The contents of the processor status register (PS) after a reset are undefined, except for the interrupt disable flag (I) which is "1". After a reset, initialize flags which affect program execution. In particular, it is essential to initialize the index X mode (T) and the decimal mode (D) flags because of their effect on calculations. In clock synchronous serial I/O, if the receive side is using an external clock and it is to output the S RDY1 signal, set the transmit enable bit, the receive enable bit, and the SRDY1 output enable bit to "1". Serial I/O1 continues to output the final bit from the T XD pin after transmission is completed. The S OUT2 pin from serial I/O2 goes to high impedance after transmission is completed. Interrupts The contents of the interrupt request bits do not change immediately after they have been written. After writing to an interrupt request register, execute at least one instruction before executing a BBC or BBS instruction. Decimal Calculations To calculate in decimal notation, set the decimal mode flag (D) to "1", then execute an ADC or SBC instruction. Only the ADC and SBC instructions yield proper decimal results. After executing an ADC or SBC instruction, execute at least one instruction before executing a SEC, CLC, or CLD instruction. In decimal mode, the values of the negative (N), overflow (V), and zero (Z) flags are invalid. The carry flag can be used to indicate whether a carry or borrow has occurred. Initialize the carry flag before each calculation. Clear the carry flag before an ADC and set the flag before an SBC. Timers If a value n (between 0 and 255) is written to a timer latch, the frequency division ratio is 1/(n + 1). Multiplication and Division Instructions The index X mode (T) and the decimal mode (D) flags do not affect the MUL and DIV instruction. The execution of these instructions does not change the contents of the processor status register. Ports The contents of the port direction registers cannot be read. The following cannot be used: * The data transfer instruction (LDA, etc.) * The operation instruction when the index X mode flag (T) is "1" * The addressing mode which uses the value of a direction register as an index * The bit-test instruction (BBC or BBS, etc.) to a direction register * The read-modify-write instruction (ROR, CLB, or SEB, etc.) to a direction register Use instructions such as LDM and STA, etc., to set the port direction registers. A-D Converter The comparator uses internal capacitors whose charge will be lost if the clock frequency is too low. Make sure that f(X IN ) is at least 500 kHz during an A-D conversion. (If the ONW pin has been set to "L", the A-D conversion will take twice as long to match the longer bus cycle, and so f(XIN ) must be at least 1 MHz.) Do not execute the STP or WIT instruction during an A-D conversion. D-A Converter The accuracy of the D-A converter becomes poor rapidly under the VCC = 3.0 V or less condition. Instruction Execution Time The instruction execution time is obtained by multiplying the frequency of the internal clock by the number of cycles needed to execute an instruction. The number of cycles required to execute an instruction is shown in the list of machine instructions. The frequency of the internal clock is half of the X IN frequency. When the ONW function is used in modes other than single-chip mode, the frequency of the internal clock may be one fourth the XIN frequency. Memory Expansion Mode The memory expansion mode is not available in the following microcomputers. * M38024M6-XXXSP * M38024M6-XXXFP Memory Expansion Mode and Microprocessor Mode Execute the LDM or STA instruction for writing to port P3 (address 000616 ) in memory expansion mode and microprocessor mode. Set areas which can be read out and write to port P3 (address 0006 16) in a memory, using the read-modify-write instruction (SEB, CLB). 3802 GROUP USER'S MANUAL 1-37 HARDWARE DATA REQUIRED FOR MASK ORDERS/ROM PROGRAMMING METHOD DATA REQUIRED FOR MASK ORDERS ROM PROGRAMMING METHOD The following are necessary when ordering a mask ROM production: 1. Mask ROM Order Confirmation Form 2. Mark Specification Form 3. Data to be written to ROM, in EPROM form (three identical copies) The built-in PROM of the blank One Time PROM version and builtin EPROM version can be read or programmed with a generalpurpose PROM programmer using a special programming adapter. Set the address of PROM programmer in the user ROM area. Table 9. Programming adapter Package Name of Programming Adapter 64P4B, 64S1B PCA4738S-64A 64P6N PCA4738F-64A 64D0 PCA4738L-64A The PROM of the blank One Time PROM version is not tested or screened in the assembly process and following processes. To ensure proper operation after programming, the procedure shown in Figure 35 is recommended to verify programming. Programming with PROM programmer Screening (Caution) (150C for 40 hours) Verification with PROM programmer Functional check in target device Caution : The screening temperature is far higher than the storage temperature. Never expose to 150 C exceeding 100 hours. Fig. 43 Programming and testing of One Time PROM version 1-38 3802 GROUP USER'S MANUAL HARDWARE FUNCTIONAL DESCRIPTION SUPPLEMENT FUNCTIONAL DESCRIPTION SUPPLEMENT Interrupt 3802 group permits interrupts on the basis of 16 sources. It is vector interrupts with a fixed priority system. Accordingly, when two or more interrupt requests occur during the same sampling, the higherpriority interrupt is accepted first. This priority is determined by hardware, but variety of priority processing can be performed by software, using an interrupt enable bit and an interrupt disable flag. For interrupt sources, vector addresses and interrupt priority, refer to "Table 10." Table 10. Interrupt sources, vector addresses and interrupt priority Vector addresses Priority Interrupt sources Remarks High-order Low-order 1 2 Reset (Note) INT0 interrupt FFFD 16 FFFB16 FFFC16 FFFA 16 3 INT1 interrupt FFF9 16 FFF8 16 4 5 6 7 8 9 10 Serial I/O1 receive interrupt Serial I/O1 transmit interrupt Timer X interrupt Timer Y interrupt Timer 1 interrupt Timer 2 interrupt CNTR 0 interrupt FFF7 16 FFF5 16 FFF3 16 FFF1 16 FFEF16 FFED16 FFEB 16 FFF6 16 FFF4 16 FFF2 16 FFF0 16 FFEE16 FFEC 16 FFEA16 11 CNTR 1 interrupt FFE9 16 FFE816 12 13 Serial I/O2 interrupt INT2 interrupt FFE7 16 FFE5 16 FFE616 FFE416 14 INT3 interrupt FFE3 16 FFE216 15 INT4 interrupt FFE1 16 FFE016 16 17 A-D conversion interrupt BRK instruction interrupt FFDF 16 FFDD 16 FFDE 16 FFDC16 Non-maskable External interrupt (active edge selectable) External interrupt (active edge selectable) Valid when serial I/O1 is selected Valid when serial I/O1 is selected STP release timer underflow External interrupt (active edge selectable) External interrupt (active edge selectable) Valid when serial I/O2 is selected External interrupt (active edge selectable) External interrupt (active edge selectable) External interrupt (active edge selectable) Non-maskable software interrupt Note: Reset functions in the same way as an interrupt with the highest priority. 3802 GROUP USER'S MANUAL 1-39 HARDWARE FUNCTIONAL DESCRIPTION SUPPLEMENT Timing After Interrupt The interrupt processing routine begins with the machine cycle following the completion of the instruction that is currently in execution. Figure 44 shows a timing chart after an interrupt occurs, and Figure 45 shows the time up to execution of the interrupt processing routine. SYNC RD WR Address bus Data bus SYNC BL, BH AL, AH SPS PC S, SPS Not used S-1, SPS S-2, SPS PCH PCL BL PS BH AL AL, AH AH : CPU operation code fetch cycle : Vector address of each interrupt : Jump destination address of each interrupt : "0016" or "0116" Fig. 44 Timing chart after an interrupt occurs Start of interrupt processing Generation of interrupt request Main routine 0 to 16 cycles Waiting time for post-processing of pipeline Stack push and Vector fetch 2 cycles 5 cycles 7 to 23 cycles (At performing 8.0 MHz, 1.75 s to 5.75 s) : at execution of DIV instruction (16 cycles) Fig. 45 Time up to execution of the interrupt processing routine 1-40 3802 GROUP USER'S MANUAL Interrupt processing routine HARDWARE FUNCTIONAL DESCRIPTION SUPPLEMENT A-D Converter By repeating the above operations up to the lowestorder bit of the A-D conversion register, an analog value converts into a digital value. A-D conversion completes at 50 clock cycles (12.5 s at f(XIN) = 8.0 MHz) after it is started, and the result of the conversion is stored into the A-D conversion register. Concurrently with the completion of A-D conversion, A-D conversion interrupt request occurs, so that the AD conversion interrupt request bit is set to "1." A-D conversion is started by setting AD conversion completion bit to "0." During A-D conversion, internal operations are performed as follows. 1. After the start of A-D conversion, A-D conversion register goes to "0016 ." 2. The highest-order bit of A-D conversion register is set to "1," and the comparison voltage Vref is input to the comparator. Then, Vref is compared with analog input voltage V IN. 3. As a result of comparison, when Vref < V IN, the highest-order bit of A-D conversion register be comes "1." When Vref > V IN, the highest-order bit becomes "0." Relative formula for a reference voltage V REF of A-D converter and Vref When n = 0 Vref = 0 Vref = VREF (n - 0.5) 256 n : the value of A-D converter (decimal numeral) When n = 1 to 255 Table 11. Change of A-D conversion register during A-D conversion Change of A-D conversion register Value of comparison voltage (Vref) At start of conversion 0 0 0 0 0 0 0 0 First comparison 1 0 0 0 0 0 0 0 V REF 2 - V REF 512 1 0 0 0 0 0 0 V REF 2 V REF 4 - V REF 512 1 0 0 0 0 0 V REF 2 V REF 4 V REF 8 Second comparison 1 Third comparison 1 After completion of eighth comparison 1: 3: 5: 7: A A A A result result result result of of of of the the the the 2 0 - V REF 512 A result of A-D conversion 1 2 first comparison third comparison fifth comparison seventh comparison 3 4 2: 4: 6: 8: 5 A A A A 6 result result result result 7 of of of of 8 the the the the second comparison fourth comparison sixth comparison eighth comparison 3802 GROUP USER'S MANUAL 1-41 HARDWARE FUNCTIONAL DESCRIPTION SUPPLEMENT Figures 46 shows A-D conversion equivalent circuit, and Figure 47 shows A-D conversion timing chart. VCC VSS about 2 k VCC AVSS VIN AN0 Sampling clock AN1 C AN2 Chopper amplifier AN3 AN4 AN5 AN6 A-D conversion register AN7 b2 b1 b0 A-D conversion interrupt request AD/DA control register Vref VREF Build-in D-A converter Reference clock AVSS Fig. 46 A-D conversion equivalent circuit Write signal for AD/DA control register 50 cycles AD conversion completion bit Sampling clock Fig. 47 A-D conversion timing chart 1-42 3802 GROUP USER'S MANUAL CHAPTER 2 APPLICATION 2.1 2.2 2.3 2.4 2.5 2.6 2.7 I/O port Timer Serial I/O PWM A-D converter Processor mode Reset APPLICATION 2.1 I/O port 2.1 I/O port 2.1.1 Memory map of I/O port 000016 Port P0 (P0) 000116 Port P0 direction register (P0D) 000216 Port P1 (P1) 000316 Port P1 direction register (P1D) 000416 Port P2 (P2) 000516 Port P2 direction register (P2D) 000616 Port P3 (P3) 000716 Port P3 direction register (P3D) 000816 Port P4 (P4) 000916 Port P4 direction register (P4D) 000A16 Port P5 (P5) 000B16 Port P5 direction register (P5D) 000C16 Port P6 (P6) 000D16 Port P6 direction register (P6D) Fig. 2.1.1 Memory map of I/O port related registers 2-2 3802 GROUP USER'S MANUAL APPLICATION 2.1 I/O port 2.1.2 Related registers Port Pi b7 b6 b5 b4 b3 b2 b1 b0 Port Pi (Pi) (i = 0, 1, 2, 3, 4, 5, 6) [Address : 0016, 0216, 0416, 0616, 0816, 0A16, 0C16] B Name 0 Port Pi0 Function In output mode Write Port latch Read In input mode Write : Port latch Read : Value of pins 1 Port Pi1 2 Port Pi2 At reset R W ? ? ? 3 Port Pi3 ? 4 Port Pi4 ? 5 Port Pi5 ? 6 Port Pi6 ? 7 Port Pi7 ? Fig. 2.1.2 Structure of Port Pi (i = 0, 1, 2, 3, 4, 5, 6) Port Pi direction register b7 b6 b5 b4 b3 b2 b1 b0 Port Pi direction register (PiD) (i = 0, 1, 2, 3, 4, 5, 6) [Address : 0116, 0316, 0516, 0716, 0916, 0B16, 0D16] B Function Name At reset R W 0 Port Pi direction register 0 : Port Pi0 input mode 1 : Port Pi0 output mode 0 1 0 : Port Pi1 input mode 1 : Port Pi1 output mode 0 : Port Pi2 input mode 1 : Port Pi2 output mode 0 : Port Pi3 input mode 1 : Port Pi3 output mode 0 : Port Pi4 input mode 1 : Port Pi4 output mode 0 0 0 0 0 : Port Pi5 input mode 1 : Port Pi5 output mode 0 : Port Pi6 input mode 1 : Port Pi6 output mode 0 : Port Pi7 input mode 1 : Port Pi7 output mode 0 0 0 2 3 4 5 6 7 Fig. 2.1.3 Structure of Port Pi direction register (i = 0, 1, 2, 3, 4, 5, 6) 3802 GROUP USER'S MANUAL 2-3 APPLICATION 2.1 I/O port 2.1.3 Handling of unused pins Table 2.1.1 Handling of unused pins (in single-chip mode) Name of Pins/Ports P0, P1, P2, P3, P4, P5, P6 V REF AV SS X OUT Handling * Set to the input mode and connect to V CC or V SS through a resistor of 1 k to 10 k . * Set to the output mode and open at "L" or "H." Connect to VSS (GND) or open. Connect to VSS(GND). Open (only when using external clock). Table 2.1.2 Handling of unused pins (in memory expansion mode and microprocessor mode) Name of Pins/Ports P3 0 , P31 P4, P5, P6 V REF ____ ONW _________ RESET OUT SYNC AV SS X OUT 2-4 Handling Open * Set to the input mode and connect to V CC or V SS through a resistor of 1 k to 10 k . * Set to the output mode and open at "L" or "H." Connect to VSS (GND) or open. Connect to VCC through a resistor of 1 k to 10 k . Open Open Open Connect to VSS(GND). Open (only when using external clock). 3802 GROUP USER'S MANUAL APPLICATION 2.2 Timer 2.2 Timer 2.2.1 Memory map of timer 002016 Prescaler 12 (PRE12) 002116 Timer 1 (T1) 002216 Timer 2 (T2) 002316 Timer XY mode register (TM) 002416 Prescaler X (PREX) 002516 Timer X (TX) 002616 Prescaler Y (PREY) 002716 Timer Y (TY) 003C16 Interrupt request register 1 (IREQ1) 003D16 Interrupt request register 2 (IREQ2) 003E16 Interrupt control register 1 (ICON1) 003F16 Interrupt control register 2 (ICON2) Fig. 2.2.1 Memory map of timer related registers 3802 GROUP USER'S MANUAL 2-5 APPLICATION 2.2 Timer 2.2.2 Related registers Prescaler 12, Prescaler X, Prescaler Y b7 b6 b5 b4 b3 b2 b1 b0 Prescaler 12 (PRE12), Prescaler X (PREX), Prescaler Y (PREY) [Address : 2016, 2416, 2616] B 0 1 Function 2 The count value of each prescaler is set. The value set in this register is written to both the prescaler and the prescaler latch at the same time. When the prescaler is read out, the value (count value) of the prescaler is read out. At reset R W 1 1 1 3 1 4 1 5 1 6 1 7 1 Fig. 2.2.2 Structure of Prescaler 12, Prescaler X, Prescaler Y Timer 1 b7 b6 b5 b4 b3 b2 b1 b0 Timer 1 (T1) [Address : 2116] B 0 1 2 Function At reset The count value of the Timer 1 is set. The value set in this register is written to both the Timer 1 and the Timer 1 latch at the same time. When the Timer 1 is read out, the value (count value) of the Timer 1 is read out. 1 0 3 0 4 0 5 0 6 0 7 0 Fig. 2.2.3 Structure of Timer 1 2-6 0 3802 GROUP USER'S MANUAL R W APPLICATION 2.2 Timer Timer 2, Timer X, Timer Y b7 b6 b5 b4 b3 b2 b1 b0 Timer 2 (T2), Timer X (TX), Timer Y (TY) [Address : 2216, 2516, 2716] B 0 Function 1 2 The count value of each timer is set. The value set in this register is written to both the Timer and the Timer latch at the same time. When the Timer is read out, the value (count value) of the Timer is read out. At reset R W 1 1 1 3 1 4 1 5 1 6 1 7 1 Fig. 2.2.4 Structure of Timer 2, Timer X, Timer Y 3802 GROUP USER'S MANUAL 2-7 APPLICATION 2.2 Timer A AA Timer XY mode register b7 b6 b5 b4 b3 b2 b1 b0 Timer XY mode register (TM) [Address : 2316] Name B 0 Timer X operating mode bit Function b1 b0 0 0 : Timer mode 0 1 : Pulse output mode 1 0 : Event counter mode 1 1 1 : Pulse width measurement mode It 2 CNTR0 active edge switch bit depends on the operating mode of the Timer X (refer to Table 2.2.1). 0 : Count start 3 Timer X count stop bit 1 : Count stop 4 Timer Y operating mode bit b5 b4 0 0 : Timer mode 0 1 : Pulse output mode 1 0 : Event counter mode 5 1 1 : Pulse width measurement mode 6 CNTR1 active edge switch bit It depends on the operating mode of the Timer Y (refer to Table 2.2.1). 0 : Count start 7 Timer Y count stop bit 1 : Count stop At reset R W 0 0 0 0 0 0 0 0 Fig. 2.2.5 Structure of Timer XY mode register Table. 2.2.1 Function of CNTR 0/CNTR 1 edge switch bit Operating mode of Timer X/Timer Y Timer mode Function of CNTR 0/CNTR 1 edge switch bit (bits 2 and 6) "0" "1" Pulse output mode "0" "1" Event counter mode "0" "1" Pulse width measurement mode "0" "1" 2-8 * Generation of CNTR0 /CNTR1 interrupt request : Falling (No effect on timer count) * Generation of CNTR 0/CNTR 1 interrupt request : Rising (No effect on timer count) * Start of pulse output : From "H" level * Generation of CNTR0 /CNTR1 interrupt request : Falling * Start of pulse output : From "L" level * Generation of CNTR 0/CNTR 1 interrupt request : Rising * Timer X/Timer Y : Count of rising edge * Generation of CNTR0 /CNTR1 interrupt request : Falling * Timer X/Timer Y : Count of falling edge * Generation of CNTR0/CNTR 1 interrupt request : Rising * Timer X/Timer Y : Measurement of "H" level width * Generation of CNTR0 /CNTR1 interrupt request : Falling * Timer X/Timer Y : Measurement of "L" level width * Generation of CNTR 0/CNTR 1 interrupt request : Rising 3802 GROUP USER'S MANUAL edge edge edge edge edge edge edge edge APPLICATION 2.2 Timer Interrupt request register 1 b7 b6 b5 b4 b3 b2 b1 b0 Interrupt request reigster 1 (IREQ1) [Address : 3C16] Function Name B At reset R W 0 INT0 interrupt request bit 0 : No interrupt request 1 : Interrupt request 0 1 INT1 interrupt request bit 0 : No interrupt request 1 : Interrupt request 0 2 Serial I/O1 receive interrupt 0 : No interrupt request 1 : Interrupt request 0 3 Serial I/O1 transmit interrupt 0 : No interrupt request 1 : Interrupt request 0 4 Timer X interrupt request 0 : No interrupt request 1 : Interrupt request 0 : No interrupt request 1 : Interrupt request 0 : No interrupt request 1 : Interrupt request 0 : No interrupt request 1 : Interrupt request 0 0 0 0 A AAAAAAA AAAAAAA AA AA A AAAAAAAA AAAAAAA AA AA A AAAAAAAA AAAAAAA AA AA A request bit request bit bit 5 Timer Y interrupt request bit 6 Timer 1 interrupt request bit 7 Timer 2 interrupt request bit "0" is set by software, but not "1." Fig. 2.2.6 Structure of Interrupt request register 1 Interrupt request register 2 b7 b6 b5 b4 b3 b2 b1 b0 Interrupt request reigster 2 (IREQ2) [Address : 3D16] Name B 0 CNTR0 interrupt request bit 1 CNTR1 interrupt request bit 2 Serial I/O2 interrupt request bit 3 INT2 interrupt request bit 4 INT3 interrupt request bit 5 INT4 interrupt request bit 6 AD conversion interrupt request bit Function At reset R W 0 : No interrupt request 1 : Interrupt request 0 : No interrupt request 1 : Interrupt request 0 : No interrupt request 1 : Interrupt request 0 0 0 0 : No interrupt request 1 : Interrupt request 0 : No interrupt request 1 : Interrupt request 0 : No interrupt request 1 : Interrupt request 0 : No interrupt request 1 : Interrupt request 0 0 0 0 0 7 Nothing is allocated for this bit. This is a write disabled bit. When this bit is read out, the value is "0." "0" is set by software, but not "1." Fig. 2.2.7 Structure of Interrupt request register 2 3802 GROUP USER'S MANUAL 2-9 APPLICATION 2.2 Timer Interrupt control register 1 b7 b6 b5 b4 b3 b2 b1 b0 Interrupt control register 1 (ICON1) [Address : 3E16] Function Name B 0 INT0 interrupt enable bit 1 INT1 interrupt enable bit 2 Serial I/O1 receive interrupt At reset 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 R W 0 AAAAAAAA AAAAAAA AAAAAAA AA AA A AAAAAAAAA AAAAAAA AA AA A AAAAAAA AA AA A enable bit 3 Serial I/O1 transmit interrupt enable bit 4 Timer X interrupt enable bit 5 Timer Y interrupt enable bit 6 Timer 1 interrupt enable bit 7 Timer 2 interrupt enable bit 0 0 0 0 Fig. 2.2.8 Structure of Interrupt control register 1 Interrupt control register 2 b7 b6 b5 b4 b3 b2 b1 b0 0 Interrupt control reigster 2 (ICON2) [Address : 3F16] Name B CNTR 0 interrupt enable bit 0 Function 0 4 INT3 interrupt enable bit 0 : Interrupt disabled 1 : Interrupt enabled 0 5 INT4 interrupt enable bit 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 6 AD conversion interrupt enable bit 7 Fix this bit to "0." Fig. 2.2.9 Structure of Interrupt control register 2 2-10 At reset 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 CNTR1 interrupt enable bit 1 : Interrupt enabled 0 2 Serial I/O2 interrupt enable bit : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 3 INT2 interrupt enable bit 1 : Interrupt enabled 3802 GROUP USER'S MANUAL 0 0 0 0 0 R W APPLICATION 2.2 Timer 2.2.3 Timer application examples (1) Basic functions and uses [Function 1] Control of Event interval (Timer X, Timer Y, Timer 1, Timer 2) The Timer count stop bit is set to "0" after setting a count value to a timer. Then a timer interrupt request occurs after a certain period. [Use] * Generation of an output signal timing * Generation of a waiting time [Function 2] Control of Cyclic operation (Timer X, Timer Y, Timer 1, Timer 2) The value of a timer latch is automatically written to a corresponding timer every time a timer underflows, and each cyclic timer interrupt request occurs. [Use] * Generation of cyclic interrupts * Clock function (measurement of 250m second) * Control of a main routine cycle Application example 1 [Function 3] Output of Rectangular waveform (Timer X, Timer Y) The output level of the CNTR pin is inverted every time a timer underflows (Pulse output mode). [Use] * A piezoelectric buzzer output Application example 2 * Generation of the remote-control carrier waveforms [Function 4] Count of External pulse (Timer X, Timer Y) External pulses input to the CNTR pin are selected as a timer count source (Event counter mode). [Use] * Measurement of frequency Application example 3 * Division of external pulses. * Generation of interrupts in a cycle based on an external pulse. (count of a reel pulse) [Function 5] Measurement of External pulse width (Timer X, Timer Y) The "H" or "L" level width of external pulses input to CNTR pin is measured (Pulse width measurement mode). [Use] * Measurement of external pulse frequency (Measurement of pulse width of FG pulse generated by motor) Application example 4 * Measurement of external pulse duty (when the frequency is fixed) FG pulse : Pulse used for detecting the motor speed to control the motor speed. 3802 GROUP USER'S MANUAL 2-11 APPLICATION 2.2 Timer (2) Timer application example 1 : Clock function (measurement of 250 ms) Outline : The input clock is divided by a timer so that the clock counts up every 250 ms. Specifications : * The clock f(X IN) = 4.19 MHz (2 22 Hz) is divided by a timer. * The clock is counted at intervals of 250 ms by the Timer X interrupt. Figure 2.2.10 shows a connection of timers and a setting of division ratios, Figures 2.2.11 show a setting of related registers, and Figure 2.2.12 shows a control procedure. f(XIN) = 4.19 MHz Fixed Prescaler X Timer X 1/16 1/256 1/256 Timer X interrupt request bit The clock is divided by 4 by software. 0 or 1 1/4 250 ms 0 : No interrupt request 1 : Interrupt request Fig. 2.2.10 Connection of timers and setting of division ratios [Clock function] 2-12 3802 GROUP USER'S MANUAL 1 second APPLICATION 2.2 Timer Timer XY mode register (Address : 2316) b7 b0 1 TM 0 0 Timer X operating mode bits : Timer mode Timer X count stop bit : Count stop Set to "0" at starting to count. Prescaler X (Address : 2416) b7 PREX b0 255 Timer X (Address:2516) b7 TX b0 Set "division ratio - 1" 255 Interrupt control register 1 (Address : 3E16) b7 b0 1 ICON1 Timer X interrupt enable bit : Interrupt enabled Interrupt request register 1 (Address : 3C16) b7 IREQ1 b0 0 Timer X interrupt request bit (becomes "1" every 250 ms) Fig. 2.2.11 Setting of related registers [Clock function] 3802 GROUP USER'S MANUAL 2-13 APPLICATION 2.2 Timer Control procedure : Figure 2.2.12 shows a control procedure. RESET Initialization SEI X : This bit is not used in this application. Set it to "0" or "1." It's value can be disregarded. .... TM XXXX1X002 (Address : 2316) ICON1 (Address : 3E16), bit4 1 All interrupts : Disabled Timer X : Timer mode Timer X interrupt : Enabled .... PREX (Address : 2416) TX (Address : 2516) 256 - 1 256 - 1 Set "division ratio - 1" to the Prescaler X and Timer X. .... TM (Address : 2316), bit3 0 .... CLI Main processing .... [Processing for completion of setting clock] (Note 1) PREX (Address : 2416) TX (Address : 2516) IREQ1 (Address : 3C16), bit4 Timer X count : Operating Interrupts : Enabled When restarting the clock from zero second after completing to set the clock, re-set timers. Note 1: This processing is performed only at completing to set the clock. 256 - 1 256 - 1 0 Timer X interrupt processing routine Note 2: When using the Index X mode flag (T). Note 3: When using the Decimal mode flag (D). CLT (Note 2) CLD (Note 3) Push register to stack Clock stop? Y Push the register used in the interrupt processing routine into the stack. Check if the clock has already been set. Count up the clock. Pop registers which is pushed to stack N Clock count up (1/4 second-year) Pop registers RTI Fig. 2.2.12 Control procedure [Clock function] 2-14 3802 GROUP USER'S MANUAL APPLICATION 2.2 Timer (3) Timer application example 2 : Piezoelectric buzzer output Outline : The rectangular waveform output function of a timer is applied for a piezoelectric buzzer output. Specifications : * The rectangular waveform resulting from dividing clock f(X IN ) = 4.19 MHz into about 2 kHz (2048 Hz) is output from the P5 4/CNTR 0 pin. * The level of the P5 4/CNTR0 pin fixes to "H" while a piezoelectric buzzer output is stopped. Figure 2.2.13 shows an example of a peripheral circuit, and Figure 2.2.14 shows a connection of the timer and setting of the division ratio. The "H" level is output while a piezoelectric buzzer output is stopped. CNTR0 output 3802 group P54/CNTR0 PiPiPi.... 244 s 244 s Set a division ratio so that the underflow output cycle of the Timer X becomes this value. Fig. 2.2.13 Example of a peripheral circuit f(XIN) = 4.19 MHz Fixed Prescaler X Timer X Fixed 1/16 1 1/64 1/2 CNTR0 Fig. 2.2.14 Connection of the timer and setting of the division ratio [Piezoelectric buzzer output] 3802 GROUP USER'S MANUAL 2-15 APPLICATION 2.2 Timer Timer XY mode register (Address : 2316) b7 b0 TM 1 0 0 1 Timer X operating mode bits : Pulse output mode CNTR0 active edge switch bit : Output from the "H" level Timer X count stop bit : Count Stop Set to "0" at starting to count. Timer X (Address : 2516) b7 b0 TX 63 Prescaler X (Address : 2416) b7 Set "division ratio - 1" b0 PREX 0 Fig. 2.2.15 Setting of related registers [Piezoelectric buzzer output] Control procedure : Figure 2.2.16 shows a control procedure. RESET X Initialization .... P5 P5D : This bit is not used in this application. Set it to "0" or "1." It's value can be disregarded. (Address : 0A16), bit4 1 (Address : 0B16) XXX1XXXX2 .... 0 ICON1(Address : 3E16), bit4 XXXX10012 (Address : 2316) TM 64 - 1 1-1 Timer X interrupts : Disabled The CNTR0 output is stopped at this point (stop outputting a piezoelectric buzzer). Set "division ratio - 1" to the Prescaler X and Timer X. .... (Address : 2516) TX PREX (Address : 2416) Main processing Output unit A piezoelectric buzzer is requested? Y The piezoelectric buzzer request occured in the main processing is processed in the output unit. N TM (Address : 2316), bit3 TX (Address : 2516) 1 64 -1 During stopping outputting a piezoelectric buzzer TM (Address : 2316), bit3 During outputting a piezoelectric buzzer Fig. 2.2.16 Control procedure [Piezoelectric buzzer output] 2-16 0 3802 GROUP USER'S MANUAL APPLICATION 2.2 Timer (4) Timer application example 3 : Measurement of frequency Outline : The following two values are compared for judging if the frequency is within a certain range. * A value counted a pulse which is input to P5 5/CNTR 1 pin by a timer. * A referance value Specifications : * The pulse is input to the P55 /CNTR1 pin and counted by the Timer Y. * A count value is read out at the interval of about 2 ms (Timer 1 interrupt interval : 244 s 8). When the count value is 28 to 40, it is regarded the input pulse as a valid. * Because the timer is a down-counter, the count value is compared with 227 to 215 . 227 to 215 = 255 (initialized value of counter) - 28 to 40 (the number of valid value). Figure 2.2.17 shows a method for judging if input pulse exists, and Figure 2.2.18 shows a setting of related registers. Input pulse **** 71.4 s or more (14 kHz or less) **** 71.4 s (14 kHz) Invalid **** 50 s (20 kHz) Valid 2 ms = 28 counts 71.4 s 50 s or less (20 kHz or more) Invalid 2 ms 50 s = 40 counts Fig 2.2.17 A method for judging if input pulse exists 3802 GROUP USER'S MANUAL 2-17 APPLICATION 2.2 Timer Timer XY mode register (Address : 2316) b7 TM b0 1 1 1 0 Timer Y operating mode bit : Event counter mode CNTR1 active edge switch bit : Count at falling edge Timer Y count stop bit : Count stop Set to "0" at starting to count. Prescaler 12 (Address : 2016) b7 b0 PRE12 63 Timer 1 (Address : 2116) b7 b0 T1 7 Set "division ratio - 1" Prescaler Y (Address : 2616) b7 b0 0 PREY Timer Y (Address : 2716) b7 b0 255 TY Set "255" to this register immediately before counting pulse. (After a certain time, this value is decreased by the number of input pulses) Interrupt control register 1 (Address : 3E16) b7 b0 1 0 ICON1 Timer Y interrupt enable bit : Interrupt disabled Timer 1 interrupt enable bit : Interrupt enabled Interrupt request register 1 (Address : 3C16) b7 IREQ1 b0 0 Judgment of Timer Y interrupt request bit (When this bit is set to "1" at reading out the count value of the Timer Y (address : 2716), 256 pulses or more are input (at setting 255 to the Timer Y).) Fig. 2.2.18 Setting of related registers [Measurement of frequency] 2-18 3802 GROUP USER'S MANUAL APPLICATION 2.2 Timer Control procedure : Figure 2.2.19 shows a control procedure. X : This bit is not used in this application. Set it to "0" or "1." It's value can be disregarded. RESET Initialization All interrupts : Disabled .... SEI 1110XXXX2 TM (Address : 2316) PRE12 (Address : 2016) 64-1 T1 8-1 (Address : 2116) PREY (Address : 2616) 1-1 TY 256-1 (Address : 2716) ICON1 (Address : 3E16), bit6 1 .... TM .... (Address : 2316), bit7 0 Timer Y : Event counter mode (Count at falling edge of pulse input from CNTR1 pin) Set the division ratio so that the Timer 1 interrupt occurs every 2 ms. Timer 1 interrupt : Enabled Timer Y count : Start Interrupts : Enabled CLI ~ ~ Timer 1 interrupt processing routine CLT (Note 1) CLD (Note 2) Push register to stack 1 IREQ1 (Address : 3C16), bit5? Note 1: When using the Index X mode flag (T). Note 2: When using the Decimal mode flag (D). Push the register used in the interrupt processing routine into the stack. When the count value is 256 or more, the processing is performed as out of range. 0 (A) TY (Address : 2716) Read the count value. Store the count value in the accumulator (A). In range 214 < (A) < 228? Out of range Fpulse 0 (Address : 2716) TY IREQ1 (Address : 3C16), bit5 Fpulse 256 - 1 0 Compare the count value read with the reference value. Store the comparison result in flag Fpulse. 1 Initialize the count value. Set the Timer Y interrupt request bit to "0." Processing for a result of judgment Pop registers Pop registers which is pushed to stack. RTI Fig. 2.2.19 Control procedure [Measurement of frequency] 3802 GROUP USER'S MANUAL 2-19 APPLICATION 2.2 Timer (5) Timer application example 4 : Measurement of pulse width of FG pulse generated by motor Outline : The "H" level width of a pulse input to the P5 4 /CNTR0 pin is counted by Timer X. An underflow is detected by Timer X interrupt and an end of the input pulse "H" level is detected by CNTR 0 interrupt. Specifications : * The "H" level width of a FG pulse input to the P54 /CNTR0 pin is counted by Timer X. (Example : When the clock frequency is 4.19 MHz, the count source would be 3.8 s that is obtained by dividing the clock frequency by 16. Measurement can be made up to 250 ms in the range of FFFF 16 to 000016 .) Figure 2.2.20 shows a connection of the timer and a setting of the division ration, and Figure 2.2.21 shows a setting of related registers. f(XIN) = 4.19 MHz Fixed Prescaler X Timer X 1/16 1/256 1/256 Timer X interrupt request bit 0 or 1 250 ms 0 : No interrupt request 1 : Interrupt request Fig. 2.2.20 Connection of the timer and setting of the division ratio [Measurement of pulse width] 2-20 3802 GROUP USER'S MANUAL APPLICATION 2.2 Timer Timer XY mode register (Address : 2316) b7 b0 TM 1 0 1 1 Timer X operating mode bits : Pulse width measurement mode CNTR0 active edge switch bit : Count "H" level width Timer X count stop bit : Count stop Set to "0" at starting to count. Prescaler X (Address : 2416) b7 PREX b0 255 Timer X (Address : 2516) b7 TX Set "division ratio - 1" b0 255 Interrupt control register 1 (Address : 3E16) b7 b0 1 ICON1 Timer X interrupt enable bit : Interrupt enabled Interrupt request register (Address : 3C16) b7 IREQ1 b0 0 Timer X interrupt request bit (This bit is set to "1" at underflow of Timer X.) Interrupt control register 2 (Address : 3F16) b7 b0 1 ICON2 CNTR0 interrupt enable bit : Interrupt enabled Interrupt request register 2 (Address : 3D16) b7 IREQ2 b0 0 CNTR0 interrupt request bit (This bit is set to "1" at completion of inputting "H" level signal.) Fig. 2.2.21 Setting of related registers [Measurement of pulse width] 3802 GROUP USER'S MANUAL 2-21 APPLICATION 2.2 Timer Figure 2.2.22 shows a control procedure. RESET Initialization SEI X : This bit is not used in this application. Set it to "0" or "1." It's value can be disregarded. .... (Address : 2316) PREX TX ICON1 IREQ1 ICON2 IREQ2 (Address : 2416) (Address : 2516) (Address : 3E16), bit4 (Address : 3C16), bit4 (Address : 3F16), bit0 (Address : 3D16), bit0 256-1 256-1 1 0 1 0 (Address : 2316), bit3 0 .... TM .... TM XXXX10112 All interrupts : Disabled Timer X : Pulse width measurement mode (Count "H" level width of pulse input from CNTR0 pin.) Set the division ratio so that the Timer X interrupt occurs every 250 ms. Timer X interrupt : Enabled CNTR0 interrupt : Enabled Timer X count : Operating Interrupts : Enabled Error occurs CLI ~ ~ Timer X interrupt processing routine Processing for error RTI CNTR0 interrupt processing routine CLT (Note 1) CLD (Note 2) Push register to stack (A) Result of pulse width measurement low-order 8-bit (A) Result of pulse width measurement high-order 8-bit PREX (Address : 2416) TX (Address : 2516) Pop registers Note 1:When using the Index X mode flag (T). Note 2: When using the Decimal mode flag (D). PREX Push the register used in the interrupt processing routine into the stack. A count value is read out and stored to RAM. Inversion of (A) TX Inversion of (A) 256 - 1 256- 1 Set the division ratio so that the Timer X interrupt occurs every 250 ms. Pop registers which is pushed to stack. RTI Fig. 2.2.22 Control procedure [Measurement of pulse width] 2-22 3802 GROUP USER'S MANUAL APPLICATION 2.3 Serial I/O 2.3 Serial I/O 2.3.1 Memory map of serial I/O 001816 Trans mit/Receive buffer register (TB/RB ) 001916 Ser ial I/O1 status register (SIO 1STS) 001A16 Ser ial I/O1 c ontrol register (SIO 1CON) 001B16 UART control register (UA RT CO N) 001C16 Baud rate generator (BR G ) 001D16 Serial I/O2 cont rol register (SIO 2 CO N) 001F16 Ser ial I/O2 register (SIO2 ) 003A16 Interrupt edge select ion register (INT EDG E) 003C16 Interrupt request register 1 (IREQ 1) 003D16 Interrupt request register 2 (IREQ 2) 003E16 Interrupt control register 1 (I CO N1) 003F16 Interrupt control register 2 (I CO N2) Fig. 2.3.1 Memory map of serial I/O related registers 3802 GROUP USER'S MANUAL 2-23 APPLICATION 2.3 Serial I/O 2.3.2 Related registers Transmit/Receive buffer register b7 b6 b5 b4 b3 b2 b1 b0 Transmit/Receive buffer register (TB/RB) [Address : 1816] Function B 0 A transmission data is written to or a receive data is read out from this buffer register. At reset 1 * At writing : a data is written to the Transmit buffer register. ? 2 ? 3 ? 4 ? 5 ? 6 ? 7 ? * At reading : a content of the Receive buffer register is read out. R W ? Note: A content of the transmit buffer register cannot be read out. A data cannot be written to the receive buffer register. Fig. 2.3.2 Structure of Transmit/Receive buffer register Serial I/O1 status register b7 b6 b5 b4 b3 b2 b1 b0 Serial I/O1 status register (SIO1STS) [Address : 1916] Name B Transmit buffer empty flag 0 (TBE) 1 Receive buffer full flag (RBF) 2 Transmit shift register shift completion flag (TSC) 3 Overrun error flag (OE) 4 Parity error flag (PE) 5 Framing error flag (FE) 6 Summing error flag (SE) Function 0 : Buffer full 1 : Buffer empty 0 : Buffer empty 1 : Buffer full 0 : Transmit shift in progress 1 : Transmit shift completed 0 R W 0 0 0 : No error 1 : Overrun error 0 : No error 1 : Parity error 0 0 0 : No error 1 : Framing error 0 : (OE) (PE) (FE) = 0 1 : (OE) (PE) (FE) = 1 0 0 1 7 Nothing is allocated for this bit. It is a write disabled bit. When this bit is read out, the value is "0." Fig. 2.3.3 Structure of Serial I/O1 status register 2-24 3802 GROUP USER'S MANUAL At reset APPLICATION 2.3 Serial I/O Serial I/O1 control register b7 b6 b5 b4 b3 b2 b1 b0 Serial I/O1 control register (SIO1CON) [Address : 1A16] B Name Function At reset 0 BRG count source selection bit (CSS) 0 1 0 2 3 4 5 6 7 0 : f(XIN) 1 : f(XIN)/4 Serial I/O1 synchronous clock At selecting clock synchronous serial I/O selection bit (SCS) 0 : BRG output divided by 4 1 : External clock input At selecting UART 0 : BRG output divided by 16 1 : External clock input divided by 16 SRDY1 output enable bit 0 : I/O port (P47) (SRDY) 1 : SRDY1 output pin 0 : Transmit buffer empty Transmit interrupt 1 : Transmit shift operating completion source selection bit (TIC) 0 : Transmit disabled Transmit enable bit (TE) 1 : Transmit enabled Receive enable bit (RE) 0 : Receive disabled 1 : Receive enabled 0 : UART Serial I/O1 mode 1 : Clock synchronous serial I/O selection bit (SIOM) Serial I/O1 enable bit (SIOE) 0 : Serial I/O1 disabled (P44-P47 : I/O port) 1 : Serial I/O1 enabled (P44-P47 : Serial I/O function pin) R W 0 0 0 0 0 0 Fig. 2.3.4 Structure of Serial I/O1 control register UART control register b7 b6 b5 b4 b3 b2 b1 b0 UART control register (UARTCON) [Address : 1B16] B 0 1 2 3 4 5 6 7 Name Character length selection bit (CHAS) Parity enable bit (PARE) Parity selection bit (PARS) Stop bit length selection bit (STPS) P45/TxD P-channel output disable bit (POFF) Function 0 : 8 bits 1 : 7 bits 0 : Parity checking disabled 1 : Parity checking enabled 0 : Even parity 1 : Odd parity 0 : 1 stop bit 1 : 2 stop bits In output mode 0 : CMOS output 1 : N-channel open-drain output Nothing is allocated for these bits. These are write disabled bits. When these bits are read out, the values are "1." At reset R W 0 0 0 0 0 1 1 1 Fig. 2.3.5 Structure of UART control register 3802 GROUP USER'S MANUAL 2-25 APPLICATION 2.3 Serial I/O Baud rate generator b7 b6 b5 b4 b3 b2 b1 b0 Baud rate generator (BRG) [Address : 1C16] Function B At reset 0 A count value of Baud rate generator is set. ? 1 ? 2 ? 3 ? 4 ? 5 ? 6 ? 7 ? R W Fig. 2.3.6 Structure of Baud rate generator Serial I/O2 control register b7 b6 b5 b4 b3 b2 b1 b0 Serial I/O2 control register (SIO2CON) [Address : 1D16] Name B Internal synchronous clock 0 selection bits 1 2 Function b2 b1 b0 0 0 0 0 1 1 0 0 1 1 1 1 0 : f(XIN)/8 1 : f(XIN)/16 0 : f(XIN)/32 1 : f(XIN)/64 0 : f(XIN)/128 1 : f(XIN)/256 0 0 0 3 Serial I/O2 port selection bit 0 4 0 5 6 7 0 : I/O port (P51, P52) 1 : SOUT2, SCLK2 output pin 0 : I/O port (P53) SRDY2 output enable bit 1 : SRDY2 output pin Transfer direction selection bit 0 : LSB first 1 : MSB first Serial I/O2 synchronous clock 0 : External clock 1 : Internal clock selection bit In output mode P51/SOUT2 P-channel 0 : CMOS output output disable bit 1 : N-channel open-drain output Fig. 2.3.7 Structure of Serial I/O2 control register 2-26 At reset 3802 GROUP USER'S MANUAL 0 0 0 R W APPLICATION 2.3 Serial I/O Serial I/O2 register b7 b6 b5 b4 b3 b2 b1 b0 Serial I/O2 register (SIO2) [Address : 1F16] Function B At reset 0 A shift register for serial transmission and reception. At transmitting : Set a transmission data. 1 At receiving : Store a reception data. ? 2 ? 3 ? 4 ? 5 ? 6 ? 7 ? R W ? Fig. 2.3.8 Structure of Serial I/O2 register Interrupt edge selection register b7 b6 b5 b4 b3 b2 b1 b0 Interrupt edge selection register (INTEDGE) [Address : 3A16] Name B INT 0 interrupt edge 0 selection bit 1 INT1 interrupt edge 2 3 4 5 6 7 Function 0 : Falling edge active 1 : Rising edge active 0 : Falling edge active 1 : Rising edge active selection bit Nothing is allocated for this bit. This is a write disabled bit.When this bit is read out, the value is "0." INT2 interrupt edge 0 : Falling edge active selection bit 1 : Rising edge active 0 : Falling edge active INT3 interrupt edge 1 : Rising edge active selection bit INT4 interrupt edge 0 : Falling edge active selection bit 1 : Rising edge active Nothing is allocated for these bits. These are write disabled bits. When these bits are read out, the values are "0." At reset R W 0 0 0 0 0 0 0 0 Fig. 2.3.9 Structure of Interrupt edge selection register 3802 GROUP USER'S MANUAL 2-27 APPLICATION 2.3 Serial I/O Interrupt request register 1 b7 b6 b5 b4 b3 b2 b1 b0 Interrupt request reigster 1 (IREQ1) [Address : 3C16] Function Name B At reset R W 0 INT0 interrupt request bit 0 : No interrupt request 1 : Interrupt request 0 1 INT1 interrupt request bit 0 : No interrupt request 1 : Interrupt request 0 : No interrupt request 1 : Interrupt request 0 0 0 : No interrupt request 1 : Interrupt request 0 : No interrupt request 1 : Interrupt request 0 0 0 : No interrupt request 1 : Interrupt request 0 : No interrupt request 1 : Interrupt request 0 : No interrupt request 1 : Interrupt request 0 0 0 2 Serial I/O1 receive interrupt request bit 3 Serial I/O1 transmit interrupt request bit 4 Timer X interrupt request bit bit 5 Timer Y interrupt request bit 6 Timer 1 interrupt request bit 7 Timer 2 interrupt request bit "0" is set by software, but not "1." Fig. 2.3.10 Structure of Interrupt request register 1 Interrupt request register 2 b7 b6 b5 b4 b3 b2 b1 b0 Interrupt request reigster 2 (IREQ2) [Address : 3D16] Name B 0 CNTR0 interrupt request bit At reset R W 0 0 0 0 0 0 0 7 Nothing is allocated for this bit. This is a write disabled bit. 0 1 2 3 4 5 6 When this bit is read out, the value is "0." "0" is set by software, but not "1." Fig. 2.3.11 Structure of Interrupt request register 2 2-28 Function 0 : No interrupt request 1 : Interrupt request 0 : No interrupt request CNTR1 interrupt request bit 1 : Interrupt request Serial I/O2 interrupt request bit 0 : No interrupt request 1 : Interrupt request 0 : No interrupt request INT2 interrupt request bit 1 : Interrupt request 0 : No interrupt request INT3 interrupt request bit 1 : Interrupt request 0 : No interrupt request INT4 interrupt request bit 1 : Interrupt request 0 : No interrupt request AD conversion interrupt 1 :Interrupt request request bit 3802 GROUP USER'S MANUAL APPLICATION 2.3 Serial I/O Interrupt control register 1 b7 b6 b5 b4 b3 b2 b1 b0 Interrupt control register 1 (ICON1) [Address : 3E16] B Function Name 0 INT0 interrupt enable bit 1 INT1 interrupt enable bit 2 Serial I/O1 receive interrupt enable bit 3 Serial I/O1 transmit interrupt enable bit 4 Timer X interrupt enable bit 5 Timer Y interrupt enable bit 6 Timer 1 interrupt enable bit 7 Timer 2 interrupt enable bit At reset 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled R W 0 0 0 0 0 0 Fig. 2.3.12 Structure of Interrupt control register 1 Interrupt control register 2 b7 b6 b5 b4 b3 b2 b1 b0 0 Interrupt control reigster 2 (ICON2) [Address : 3F16] Name B 0 CNTR0 interrupt enable bit Function At reset 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 CNTR1 interrupt enable bit 1 : Interrupt enabled 0 : Interrupt disabled 2 Serial I/O2 interrupt enable bit 1 : Interrupt enabled 0 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 3 INT2 interrupt enable bit 4 INT3 interrupt enable bit 5 INT4 interrupt enable bit 6 AD conversion interrupt enable bit 7 Fix this bit to "0." R W 0 0 0 0 0 0 Fig. 2.3.13 Structure of Interrupt control register 2 3802 GROUP USER'S MANUAL 2-29 APPLICATION 2.3 Serial I/O 2.3.3 Serial I/O connection examples (1) Control of peripheral IC equipped with CS pin There are connection examples using a clock synchronous serial I/O mode. Figure 2.3.14 shows connection examples of a peripheral IC equipped with the CS pin. (1) Only transmission (using the RXD pin as an I/O port) Port CS SCLK CLK TXD DATA 3802 group Peripheral IC (OSD controller etc.) (3) Transmission and reception (Pins RXD and TXD are connected) (Pins IN and OUT in peripheral IC are connected) 3802 (2) Transmission and reception CS SCLK CLK TXD RXD IN 3802 group OUT Peripheral IC (E2 PROM etc.) (4) Connecting ICs Port CS Port CS SCLK CLK SCLK CLK TXD RXD IN TXD IN OUT R XD Port OUT group 1 IC 2 Peripheral 2 (E PROM etc.) Peripheral IC 1 3802 group 1: Select an N-channel open-drain output control of TXD pin. 2: Use such OUT pin of peripheral IC as an N-channel opendrain output in high impedance during receiving data. Notes1: "Port" is an output port controlled by software. 2: Use SOUT and SIN instead of TXD and RXD in the serial I/O2. Fig. 2.3.14 Serial I/O connection examples (1) 2-30 Port 3802 GROUP USER'S MANUAL CS CLK IN OUT Peripheral IC 2 APPLICATION 2.3 Serial I/O (2) Connection with microcomputer Figure 2.3.15 shows connection examples of the other microcomputers. (1) Selecting an internal clock (2) Selecting an external clock SCLK CLK SCLK CLK TXD IN TXD IN RXD OUT RXD OUT 3802 group Microcomputer (3) Using the SRDY siganl output function (Selecting an external clock) 3802 group Microcomputer (4) Using UART SRDY RDY SCLK CLK TXD RXD TXD IN RXD TXD RXD OUT 3802 group Microcomputer 3802 group Microcomputer : UART can not be used in the serial I/O2. Note: Use SOUT and SIN instead of TXD and RXD in the serial I/O2. Fig. 2.3.15 Serial I/O connection examples (2) 3802 GROUP USER'S MANUAL 2-31 APPLICATION 2.3 Serial I/O 2.3.4 Setting of serial I/O transfer data format A clock synchronous or clock asynchronous (UART) is selected as a data format of the serial I/O1. The serial I/O2 operates in a clock synchronous. Figure 2.3.16 shows a setting of serial I/O transfer data format. 1ST-8DATA-1SP ST LSB MSB SP 1ST-7DATA-1SP ST LSB MSB SP 1ST-8DATA-1PAR-1SP ST LSB MSB PAR PAR SP MSB 2SP SP 1ST-7DATA-1PAR-1SP ST UART LSB MSB 1ST-8DATA-2SP ST LSB 1ST-7DATA-2SP ST Serial I/O1 LSB MSB 2SP 1ST-8DATA-1PAR-2SP ST LSB MSB PAR PAR 2SP 1ST-7DATA-1PAR-2SP ST Clock synchronous Serial I/O Serial I/O2 Clock synchronous Serial I/O LSB LSB first LSB first MSB first Fig. 2.3.16 Setting of Serial I/O transfer data format 2-32 MSB 3802 GROUP USER'S MANUAL ST :Start bit SP :Stop bit PAR :Parity bit 2SP APPLICATION 2.3 Serial I/O 2.3.5 Serial I/O application examples (1) Communication using a clock synchronous serial I/O (transmit/receive) _____ Outline : 2-byte data is transmitted and received through the clock synchronous serial I/O. The SRDY signal is used for communication control. Figure 2.3.17 shows a connection diagram, and Figure 2.3.18 shows a timing chart. Transmitting side Receiving side P41/INT0 SRDY1 SCLK1 SCLK TXD RXD 3802 group 3802 group Fig. 2.3.17 Connection diagram [Communication using a clock synchronous serial I/O] Specifications : * * * * The Serial I/O1 is used (clock synchronous serial I/O is selected) Synchronous clock frequency : 125 kHz (f(X IN) = 4 MHz is divided by 32) _____ The S RDY1 (receivable signal) is _____ used. The receiving side outputs the S RDY1 signal at intervals of 2 ms (generated by timer), and 2-byte data is transferred from the transmitting side to the receiving side. **** SRDY1 SCLK1 TXD **** D0 D1 D2 D3 D4 D5 D6 D7 D0 D1 D2 D3 D4 D5 D6 D7 D0 D1 **** 2 ms Fig. 2.3.18 Timing chart [Communication using a clock synchronous serial I/O] 3802 GROUP USER'S MANUAL 2-33 APPLICATION 2.3 Serial I/O Transmitting side Serial I/O1 status register (Address : 1916) b7 b0 SIO1STS Transmit buffer empty flag * Check to be transferred data from the Transmit buffer register to Transmit shift register. * Writable the next transmission data to the Transmit buffer register at being set to "1." Transmit shift register shift completion flag Check a completion of transmitting 1-byte data with this flag "1" : Transmit shift completed Serial I/O1 control register (Address : 1A16) b7 SIO1CON b0 1 1 0 1 0 0 BRG counter source selection bit : f(XIN) Serial I/O1 synchronous clock selection bit : BRG/4 Transmit enable bit : Transmit enabled Receive enable bit : Receive disabled Serial I/O1 mode selection bit : Clock synchronous serial I/O Serial I/O1 enable bit : Serial I/O1 enabled Baud rate generator (Address : 1C16) b7 BRG b0 Set "division ratio - 1" 7 Interrupt edge selection register (Address : 3A16) b7 INTEDGE b0 0 INT0 active edge selection bit : Select INT0 falling edge Fig. 2.3.19 Setting of related registers at a transmitting side [Communication using a clock synchronous serial I/O] 2-34 3802 GROUP USER'S MANUAL APPLICATION 2.3 Serial I/O Receiving side Serial I/O1 status register (Address : 1916) b7 b0 SIO1STS Receive buffer full flag Check a completion of receiving 1-byte data with this flag. "1" : At completing to receive "0" : At reading out a receive buffer Serial I/O1 control register (Address : 1A16) b7 SIO1CON 1 1 1 1 b0 1 1 Serial I/O1 synchronous clock selection bit : External clock SRDY1 output enable bit : Use the SRDY1 output Transmit enable bit : Transmit enabled Set this bit to "1," using SRDY1 output. Receive enable bit : Receive enabled Sirial I/O1 mode selection bit : Clock synchronous serial I/O Serial I/O1 enable bit : Serial I/O1 enabled Fig. 2.3.20 Setting of related registers at a receiving side [Communication using a clock synchronous serial I/O] 3802 GROUP USER'S MANUAL 2-35 APPLICATION 2.3 Serial I/O Control procedure : Figure 2.3.21 shows a control procedure at a transmitting side, and Figure 2.3.22 shows a control procedure at a receiving side. RESET X : This bit is not used in this application. Set it to "0" or "1." It's value can be disregarded. Initialization ..... SIO1CON (Address : 1A16) 1101XX002 (Address : 1C16) 8--1 BRG 0 INTEDGE (Address : 3A16), bit0 0 IREQ1 (Address:3C16), bit0? * Detect INT0 falling edge 1 IREQ1 (Address : 3C16), bit0 TB/RB (Address : 1816) 0 The first byte of a transmission data SIO1STS (Address : 1916), bit0? 0 1 TB/RB (Address : 1816) The second byte of a transmission data SIO1STS (Address : 1916), bit0? * Check to be transfered data from the Transmit buffer register to the Transmit shift register. (Transmit buffer empty flag) * Write a transmission data The transmit buffer empty flag is set to "0" by this writing. 0 * Check to be transfered data from the Transmit buffer register to the Transmit shift register. (Transmit buffer empty flag) 1 SIO1STS (Address : 1916), bit2? * Write a transmission data The Transmit buffer empty flag is set to "0" by this writing. 0 * Check a shift completion of the Transmit shift register (Transmit shift register shift completion flag) 1 Fig. 2.3.21 Control procedure at a transmitting side [Communication using a clock synchronous serial I/O] 2-36 3802 GROUP USER'S MANUAL APPLICATION 2.3 Serial I/O X RESET : This bit is not used in this application. Set it to "0" or "1." It's value can be disregarded. Initialization ..... SIO1CON (Address : 1A16) 1111 X11X2 N Pass 2 ms? * An interval of 2 ms is generated by a timer. Y TB/RB (Address : 1816) Dummy data SIO1STS (Address : 1916), bit1? * SRDY1 output SRDY1 signal is output by writing data to the TB/RB. Using the SRDY1 , the transmit enabled bit (bit4) of the SIO1CON is set to "1." 0 * Check a completion of receiving (Receive buffer full flag) 1 * Receive the first byte data. A Receive buffer full flag is set to "0" by reading data. Read out reception data from TB/RB (Address : 1816) 0 SIO1STS (Address : 1916), bit1? * Check a completion of receiving (Receive buffer full flag) 1 Read out reception data from TB/RB (Address : 1816) * Receive the second byte data. A Receive buffer full flag is set to "0" by reading data. Fig. 2.3.22 Control procedure at a receiving side [Communication using a clock synchronous serial I/O] 3802 GROUP USER'S MANUAL 2-37 APPLICATION 2.3 Serial I/O (2) Output of serial data (control of a peripheral IC) Outline : 4-byte data is transmitted and received through the clock synchronous serial I/O. The CS signal is output to a peripheral IC through the port P5 3. P53 SCLK1 TXD 3802 group CS P53 CS CLK DATA CS CLK SCLK2 CLK DATA SOUT2 DATA Peripheral IC (1) Example for using Serial I/O1 3802 group CS CLK DATA Peripheral IC (2) Example for using Serial I/O2 Fig. 2.3.23 Connection diagram [Output of serial data] Specifications : * * * * * The Serial I/O is used. (clock synchronous serial I/O is selected) Synchronous clock frequency : 125 kHz (f(X IN) = 4 MHz is divided by 32) Transfer direction : LSB first The Serial I/O interrupt is not used. ___ The Port P53 is connected to the CS pin ("L" active) of the peripheral IC for a transmission control (the output level of the port P5 3 is controlled by software). Figre 2.3.24 shows an output timing chart of serial data. CS CLK DATA DO0 DO1 DO2 DO3 Note: The SOUT2 pin is in high impedance after completing to transfer data, using the serial I/O2 Fig. 2.3.24 Timing chart [Output of serial data] 2-38 3802 GROUP USER'S MANUAL APPLICATION 2.3 Serial I/O Figure 2.3.25 shows a setting of serial I/O1 related registers, and Figure 2.3.26 shows a setting of serial I/O1 transmission data. Serial I/O1 control register (Address : 1A16) b7 SIO1CON b0 1 1 0 1 1 0 0 0 BRG count source selection bit : f(XIN) Serial I/O1 synchronous clock selection bit : BRG/4 SRDY1 output enable bit : Not use the SRDY1 signal output function Transmit interrupt source selection bit : Transmit shift operating completion Transmit enable bit : Transmit enabled Receive enable bit : Receive disabled Serial I/O1 mode selection bit : Clock synchronous serial I/O Serial I/O1 enable bit : Serial I/O1 enabled UART control register (Address : 1B16) b7 b0 0 UARTCON P45/TXD P-channel output disable bit : CMOS output Baud rate generator (Address : 1C16) b7 b0 7 BRG Set "division ratio - 1" Interrupt control register 1 (Address : 3E16) b7 b0 ICON1 0 Serial I/O1 transmit interrupt enable bit : Interrupt disabled Interrupt request register 1 (Address : 3C16) b7 b0 IREQ1 0 Serial I/O1 transmit interrupt request bit Using this bit, check the completion of transmitting 1-byte base data. "1" : Transmit shift completion Fig. 2.3.25 Setting of serial I/O1 related registers [Output of serial data] Transmit/Receive buffer register (Address : 1816) b7 TB/RB b0 Set a transmission data. Check that transmission of the previous data is completed before writing data (bit 3 of the Interrupt request register 1 is set to "1"). Fig. 2.3.26 Setting of serial I/O1 transmission data [Output of serial data] 3802 GROUP USER'S MANUAL 2-39 APPLICATION 2.3 Serial I/O Control procedure : When the registers are set as shown in Fig. 2.3.25, the Serial I/O1 can transmit 1-byte data simply by writing data to the Transmit buffer register. Thus, after setting the CS signal to "L," write the transmission data to the Receive buffer register on a 1-byte base, and return the CS signal to "H" when the desired number of bytes have been transmitted. Figure 2.3.27 shows a control procedure of serial I/O1. RESET X : This bit is not used in this application. Set it to "0" or "1." It's value can be disregarded. Initialization .... SIO1CON (Address : 1A16) 110110002 0 UARTCON (Address : 1B16), bit4 (Address : 1C16) 8-1 BRG (Address : 3E16), bit3 0 ICON1 (Address : 0A16), bit3 1 P5 (Address : 0B16) XXXX1XXX2 P5D Set the Serial I/O1. Serial I/O1 transmit interrupt : Disabled Set the CS signal output port. ("H" level output) Set the CS signal output level to "L." .... P5 (Address : 0A16), bit3 0 IREQ1 (Address : 3C16), bit3 TB/RB (Address : 1816) 0 a transmission data IREQ1 (Address : 3C16), bit3? 0 Set the Serial I/O1 transmit interrupt request bit to "0." Write a transmission data. (start to transmit 1-byte data) Check the completion of transmitting 1byte data. 1 N Complete to transmit data? Y P5 (Address : 0A16), bit3 1 Use any of RAM area as a counter for counting the number of transmitted bytes. Check that transmission of the target number of bytes has been completed. Return the CS signal output level to "H" when transmission of the target number of bytes is completed. Fig. 2.3.27 Control procedure of serial I/O1 [Output of serial data] 2-40 3802 GROUP USER'S MANUAL APPLICATION 2.3 Serial I/O Figure 2.3.28 shows a setting of serial I/O2 related registers, and Figure 2.3.29 shows a setting of serial I/O2 transmission data. Serial I/O2 control register (Address : 1D16) b7 SIO2CON b0 0 1 0 0 1 0 1 0 Internal synchronous clock selection bits : f(XIN)/32 Serial I/O2 port selection bit : Use the Serial I/O2 SRDY2 output enable bit : Not use the SRDY2 signal output function Transfer direction selection bit : LSB first Serial I/O2 synchronous clock selection bit : Internal clock P51/SOUT2 P-channel output disable bit : CMOS output Interrupt control register 2 (Address : 3F16) b7 b0 ICON2 0 Serial I/O2 interrupt enable bit : Interrupt disabled Interrupt request register 2 (Address : 3D16) b7 b0 IREQ2 0 Serial I/O2 interrupt request bit Using this bit, check the completion of transmitting 1-byte base data. "1" : Transmit completion Fig. 2.3.28 Setting of serial I/O2 related registers [Output of serial data] Serial I/O2 register (Address : 1F16) b7 SIO2 b0 Set a transmission data. Check that transmission of the previous data is completed before writing data (bit 2 of the Interrupt request register 2 is set to "1"). Fig. 2.3.29 Setting of serial I/O2 transmission data [Output of serial data] 3802 GROUP USER'S MANUAL 2-41 APPLICATION 2.3 Serial I/O Control procedure : When the registers are set as shown in Fig. 2.3.28, the Serial I/O2 can transmit 1-byte data simply by writing data to the Serial I/O2 register. Thus, after setting the CS signal to "L," write the transmission data to the Serial I/O1 register on a 1-byte base, and return the CS signal to "H" when the desired number of bytes have been transmitted. Figure 2.3.30 shows a control procedure of serial I/O2. RESET X : This bit is not used in this application. Set it to "0" or "1." It's value can be disregarded. Initialization .... 010010102 SIO2CON(Address : 1D16) 0 ICON2 (Address : 3F16), bit2 1 (Address : 0A16), bit3 P5 XXXX1XXX2 (Address : 0B16) P5D Set the Serial I/O2 control register. Serial I/O2 interrupt : Disabled Set the CS signal output port. ("H" level output) .... P5 (Address : 0A16), bit3 0 IREQ2 (Address : 3D16), bit2 0 a transmission data SIO2 (Address : 1F16) IREQ2 (Address : 3D16), bit2? Set the CS signal output level to "L." Set the Serial I/O2 interrupt request bit to "0." 0 Write a transmission data. (start to transmit 1-byte data) Check the completion of transmitting 1byte data. 1 N Complete to transmit data? Y P5 (Address : 0A16), bit3 1 Use any of RAM area as a counter for counting the number of transmitted bytes. Check that transmission of the target number of bytes has been completed. Return the CS signal output level to "H" when transmission of the target number of bytes is completed. Fig. 2.3.30 Control procedure of serial I/O2 [Output of serial data] 2-42 3802 GROUP USER'S MANUAL APPLICATION 2.3 Serial I/O (3) Cyclic transmission or reception of block data (data of a specified number of bytes) between microcomputers [without using an automatic transfer] Outline : When a clock synchronous serial I/O is used for communication, synchronization of the clock and the data between the transmitting and receiving sides may be lost because of noise included in the synchronizing clock. Thus, it is necessary to be corrected constantly. This "heading adjustment" is carried out by using the interval between blocks in this example. SCLK SCLK RXD TXD TXD RXD Slave unit Master unit Note: Use SOUT and SIN instead of TXD and RXD in the serial I/O2. Fig. 2.3.31 Connection diagram [Cyclic transmission or reception of block data between microcomputers] Specifications : * * * * * * * * The serial I/O1 is used (clock synchronous serial I/O is selected). Synchronous clock frequency : 131 kHz (f(X IN) = 4.19 MHz is divided by 32) Byte cycle: 488 s Number of bytes for transmission or reception : 8 byte/block Block transfer cycle : 16 ms Block transfer period : 3.5 ms Interval between blocks : 12.5 ms Heading adjustive time : 8 ms Limitations of the specifications 1. Reading of the reception data and setting of the next transmission data must be completed within the time obtained from "byte cycle - time for transferring 1-byte data" (in this example, the time taken from generating of the Serial I/O1 receive interrupt request to generating of the next synchronizing clock is 431 s). 2. "Heading adjustive time < interval between blocks" must be satisfied. 3802 GROUP USER'S MANUAL 2-43 APPLICATION 2.3 Serial I/O The communication is performed according to the timing shown below. In the slave unit, when a synchronizing clock is not input within a certain time (heading adjustive time), the next clock input is processed as the beginning (heading) of a block. When a clock is input again after one block (8 byte) is received, the clock is ignored. Figure 2.3.33 shows a setting of related registers. D0 D1 D2 D7 D0 Byte cycle Block transfer period Interval between blocks Block transfer cycle Heading adjustive time Processing for heading adjustment Fig. 2.3.32 Timing chart [Cyclic transmission or reception of block data between microcomputers] Master unit Slave unit Serial I/O1 control register (Address : 1A16) b7 b0 Serial I/O1 control register (Address : 1A16) b7 b0 SIO1CON 1 1 1 1 1 0 0 0 SIO1CON 1 1 1 1 0 1 BRG count source : f(XIN) Synchronous clock : BRG/4 Not use the SRDY1 output Transmit interrupt source : Transmit shift operating completion Not be effected by external clock Synchronous clock : External clock Not use the SRDY1 output Transmit enabled Receive enabled Transmit enabled Receive enabled Not use the serial I/O1 transmit interrupt Clock synchronous serial I/O Clock synchronous serial I/O Serial I/O1 enabled Serial I/O1 enabled Both of units UART control register (Address : 1B16) b7 b0 UARTCON 0 P45/TXD pin : CMOS output Baud rate generator (Address : 1C16) b7 b0 BRG 7 Set "division ratio - 1" Fig. 2.3.33 Setting of related registers [Cyclic transmission or reception of block data between microcomputers] 2-44 3802 GROUP USER'S MANUAL APPLICATION 2.3 Serial I/O Control procedure : Control in the master unit After a setting of the related registers is completed as shown in Figure 2.3.33, in the master unit transmission or reception of 1-byte data is started simply by writing transmission data to the Transmit buffer register. To perform the communication in the timing shown in Figure 2.3.32, therefore, take the timing into account and write transmission data. Read out the reception data when the Serial I/O1 transmit interrupt request bit is set to "1," or before the next transmission data is written to the Transmit buffer register. A processing example in the master unit using timer interrupts is shown below. Interrupt processing routine executed every 488 s CLT (Note 1) CLD (Note 2) Push register to stack Within a block transfer period? Note 1: When using the Index X mode flag (T). Note 2: When using the Decimal mode flag (D). Push the register used in the interrupt processing routine into the stack. N Y Generate a certain block interval by using a timer or other functions. Count a block interval counter Read a reception data Complete to transfer a block? Y Start a block transfer? N Y N Write the first transmission data (first byte) in a block Write a transmission data Pop registers Check the block interval counter and determine to start of a block transfer. Pop registers which is pushed to stack. RTI Fig. 2.3.34 Control in the master unit 3802 GROUP USER'S MANUAL 2-45 APPLICATION 2.3 Serial I/O Control in the slave unit After a setting of the related registers is completed as shown in Figure 2.3.33, the slave unit becomes the state which is received a synchronizing clock at all times, and the Serial I/O1 receive interrupt request bit is set to "1" every time an 8-bit synchronous clock is received. By the serial I/O1 receive interrupt processing routine, the data to be transmitted next is written to the Transmit buffer register after received data is read out. However, if no serial I/O1 receive interrupt occurs for more than a certain time (head adjustive time), the following processing will be performed. 1. The first 1 byte data of the transmission data in the block is written into the Transmit buffer register. 2. The data to be received next is processed as the first 1 byte of the received data in the block. Figure 2.3.35 shows the control in the slave unit using a serial I/O1 receive interrupt and any timer interrupt (for head adjustive). Serial I/O1 receive interrupt processing routine Timer interrupt processing routine CLT (Note 1) CLD (Note 2) Push register to stack N Within a block transfer period? Push the register used in the interrupt processing routine into the stack. Check the received byte counter to judge if a block has been transfered. Y CLT (Note 1) CLD (Note 2) Push register to stack Heading adjustive counter - 1 N Heading adjustive counter = 0? Read a reception data Push the register used in the interrupt processing routine into the stack. Y Write the first transmission data (first byte) in a block A received byte counter +1 A received byte counter 8? A received byte counter Y 0 N Pop registers Write any data (FF16) Write a transmission data Pop registers which is pushed to stack. RTI Heading adjustive counter Initialized value (Note 3) Pop registers Pop registers which is pushed to stack. RTI Notes 1: When using the Index X mode flag (T). 2: When using the Decimal mode flag (D). 3: In this example, set the value which is equal to the heading adjustive time divided by the timer interrupt cycle as the initialized value of the heading adjustive counter. For example: When the heading adjustive time is 8 ms and the timer interrupt cycle is 1 ms, set 8 as the initialized value. Fig. 2.3.35 Control in the slave unit 2-46 3802 GROUP USER'S MANUAL APPLICATION 2.3 Serial I/O (4) Communication (transmit/receive) using an asynchronous serial I/O (UART) Point : 2-byte data is transmitted and received through an asynchronous serial I/O. The port P4 0 is used for communication control. Figure 2.3.36 shows a connection diagram, and Figure 2.3.37 shows a timing chart. Receiving side Transmitting side P40 P40 TXD RXD 3802 group 3802 group Fig. 2.3.36 Connection diagram [Communication using UART] Specifications : * The Serial I/O1 is used (UART is selected). * Transfer bit rate : 9600 bps (f(XIN) = 4.9152 MHz is divided by 512) * Communication control using port P4 0 (The output level of the port P4 0 is controlled by softoware.) * 2-byte data is transferred from the transmitting side to the receiving side at intervals of 10 ms (generated by timer). P40 TXD ST D0 D1 D2 D3 D4 D5 D6 D7 SP(2) ST D0 D1 D2 D3 D4 D5 D6 D7 SP(2) ST D0 10 ms Fig. 2.3.37 Timing chart [Communication using UART] 3802 GROUP USER'S MANUAL 2-47 APPLICATION 2.3 Serial I/O Table 2.3.1 shows setting examples of Baud rate generator (BRG) values and transfer bit rate values, Figure 2.3.38 shows a setting of related registers at a transmitting side, and Figure 2.3.39 shows a setting of related registers at a receiving side. Table 2.3.1 Setting examples of Baud rate generator values and transfer bit rate values Transfer bit BRG count at f(X IN) = 4.9152 MH Z at f(X IN) = 7.3728 MH Z at f(XIN) = 8 MHZ rate (bps) source (Note 1) (Note 2) BRG setting value Actual time (bps) BRG setting value Actual time (bps) BRG setting value Actual time (bps) 600 f(XIN)/4 127(7F 16) 600.00 191(BF 16) 600.00 207(CF 16) 600.96 1200 f(XIN)/4 63(3F16) 1200.00 95(5F 16) 1200.00 103(67 16) 1201.92 2400 f(XIN)/4 31(1F16) 2400.00 47(2F 16) 2400.00 51(33 16) 2403.85 4800 f(XIN)/4 15(0F16) 4800.00 23(17 16) 4800.00 25(19 16) 4807.69 9600 f(XIN)/4 7(07 16) 9600.00 11(0B16) 9600.00 12(0C16) 9615.38 19200 f(XIN)/4 3(03 16) 19200.00 5(0516) 19200.00 5(0516) 20833.33 38400 f(XIN)/4 1(01 16) 38400.00 2(0216) 38400.00 2(0216) 41666.67 76800 f(X IN) 3(03 16) 76800.00 5(0516) 76800.00 5(0516) 83333.33 31250 f(X IN) 15(0F 16) 31250.00 62500 f(X IN) 7(0716) 62500.00 Notes 1: Equation of transfer bit rate Transfer bit rate (bps) = f(XIN) (BRG setting value + 1) 16 m m: when bit 0 of the Serial I/O1 control register (Address : 1A 16) is set to "0," a value of m is 1. when bit 0 of the Serial I/O1 control register (Address : 1A 16) is set to "1," a value of m is 4. 2: A BRG count source is selected by bit 0 of the Serial I/O1 control register (Address : 1A 16 ). 2-48 3802 GROUP USER'S MANUAL APPLICATION 2.3 Serial I/O Transmitting side Serial I/O1 status register (Address : 1916) b7 b0 SIO1STS Transmit buffer empty flag * Check to be transferred data from the Transmit buffer register to the Transmit shift register. * Writable the next transmission data to the Transmit buffer register at being set to "1." Transmit shift register shift completion flag Check a completion of transmitting 1-byte data with this flag. "1" : Transmit shift completed Serial I/O1 control register (Address : 1A16) b7 b0 SIO1CON 1 0 0 1 0 0 1 BRG count source selection bit : f(XIN)/4 Serial I/O1 synchronous clock selection bit : BRG/16 SRDY1 output enable bit : Not use SRDY1 out Transmit enable bit : Transmit enabled Receive enable bit : Receive disabled Serial I/O1 mode selection bit : Asynchronous serial I/O(UART) Serial I/O1 enable bit : Serial I/O1 enabled UART control register (Address : 1B16) b7 UARTCON b0 0 1 0 0 Character length selection bit : 8 bits Parity enable bit : Parity checking disabled Stop bit length selection bit : 2 stop bits P45/TXD P-channel output disable bit : CMOS output Baud rate generator (Address : 1C16) b7 BRG b0 7 Set f(XIN) Transfer bit rate 16 m -1 when bit 0 of the Serial I/O1 control register (Address : 1A16) is set to "0," a value of m is 1. when bit 0 of the Serial I/O1 control register (Address : 1A16) is set to "1," a value of m is 4. Fig. 2.3.38 Setting of related registers at a transmitting side [Communication using UART] 3802 GROUP USER'S MANUAL 2-49 APPLICATION 2.3 Serial I/O Receiving side Serial I/O1 status register (Address : 1916) b7 b0 SIO1STS Receive buffer full flag Check a completion of receiving 1-byte data with this flag. "1" : at completing to receive "0" : at reading out a content of the Receive buffer register Overrun error flag "1" : when data are ready to be transferred to the Receive shift register in the state of storing data into the Receive buffer register. Parity error flag "1" : when parity error occurs at enabled parity. Framing error flag "1" : when data can not be received at the timing of setting a stop bit. Summing error flag "1" : when even one of the following errors occurs. * Overrun error * Parity error * Framing error Serial I/O1 control register (Address : 1A16) b7 SIO1CON b0 1 0 1 0 0 0 1 BRG count source selection bit : f(XIN)/4 Serial I/O1 synchronous clock selection bit : BRG/16 SRDY1 output enable bit : Not use SRDY1 out Transmit enable bit : Transmit disabled Receive enable bit : Receive enabled Serial I/O1 mode selection bit : Asynchronous serial I/O(UART) Serial I/O1 enable bit : Serial I/O1 enabled UART control register (Address : 1B16) b7 b0 UARTCON 1 0 0 Character length selection bit : 8 bits Parity enable bit : Parity checking disabled Stop bit length selection bit : 2 stop bits Baud rate generator (Address : 1C16) b7 BRG b0 7 Set f(XIN) Transfer bit rate 16 m -1 when bit 0 of the Serial I/O1 control register (Address : 1A16) is set to "0," a value of m is 1. when bit 0 of the Serial I/O1 control register (Address : 1A16) is set to "1," a value of m is 4. Fig. 2.3.39 Setting of related registers at a receiving side [Communication using UART] 2-50 3802 GROUP USER'S MANUAL APPLICATION 2.3 Serial I/O Control procedure : Figure 2.3.40 shows a control procedure at a transmitting side, and Figure 2.3.41 shows a control procedure at a receiving side. X RESET : This bit is not used in this application. Set it to "0" or "1." It's value can be disregarded. Initialization ..... 1001X0012 SIO1CON (Address : 1A16) 000010002 UARTCON (Address : 1B16) (Address : 1C16) 8 -1 BRG 0 (Address : 0816), bit0 P4 (Address : 09 16 ) 2 XXXXXXX1 P4D * Set port P40 for a communication control. N Pass 10 ms? * An interval of 10 ms is generated by a timer. Y P4 (Address : 0816), bit0 * Start of communication. 1 * Write a transmission data The Transmit buffer empty flag is set to "0" by this writing. The first byte of a transmission data TB/RB (Address : 1816) 0 SIO1STS (Address : 1916), bit0? * Check to be transferred data from the Transmit buffer register to the Transmit shift register. (Transmit buffer empty flag) 1 The second byte of a transmission data TB/RB (Address : 1816) SIO1STS (Address : 1916), bit0? * Write a transmission data The Transmit buffer empty flag is set to "0" by this writing. 0 * Check to be transferred data from the Transmit buffer register to the Transmit shift register. (Transmit buffer empty flag) 0 * Check a shift completion of the Transmit shift register. (Transmit shift register shift completion flag) 1 SIO1STS (Address : 1916), bit2? 1 P4 (Address : 0816), bit0 0 * End of communication Fig. 2.3.40 Control procedure at a transmitting side [Communication using UART] 3802 GROUP USER'S MANUAL 2-51 APPLICATION 2.3 Serial I/O RESET X :This bit is not used in this application. Set it to "0" or "1." It's value can be disregarded. Initialization ..... SIO1CON UARTCON BRG P4D (Address : 1A16) (Address : 1B16) (Address : 1C16) (Address : 0916) 1010X0012 000010002 8-1 XXXXXXX02 SIO1STS (Address : 1916), bit1? 0 * Check a completion of receiving. (Receive buffer full flag) 1 * Receive the first 1 byte data A Receive buffer full flag is set to "0" by reading data. Read out a reception data from RB (Address : 1816) SIO1STS (Address : 1916), bit6? 1 * Check an error flag. 0 * Check a completion of receiving. (Receive buffer full flag) 0 SIO1STS (Address : 1916), bit1? 1 * Receive the second byte data A Receive buffer full flag is set to "0" by reading data. Read out a reception data from RB (Address : 1816) SIO1STS (Address : 1916), bit6? 1 * Check an error flag. Processing for error 0 1 P4 (Address : 0816), bit0? 0 SIO1CON (Address : 1A16) SIO1CON (Address : 1A16) 0000X0012 1010X0012 * Countermeasure for a bit slippage Fig. 2.3.41 Control procedure at a receiving side [Communication using UART] 2-52 3802 GROUP USER'S MANUAL APPLICATION 2.4 PWM 2.4 PWM 2.4.1 Memory map of PWM 002B16 PWM control register (PWMCON) 002C16 PWM prescaler (PREPWM) 002D16 PWM register (PWM) Fig. 2.4.1 Memory map of PWM related registers 3802 GROUP USER'S MANUAL 2-53 APPLICATION 2.4 PWM 2.4.2 Related registers PWM control register b7 b6 b5 b4 b3 b2 b1 b0 PWM control register (PWMCON) [Address:2B16] Name B 0 PWM function enable bit 1 Count source selection bit Function 0 : PWM disabled 1 : PWM enabled 0 : f(XIN) 1 : f(XIN)/2 At reset R W 0 0 2 Nothing is arranged for these bits. These are write disabled bits. 0 3 0 4 0 5 0 6 0 7 0 When these bits are read out, the contents are "0". Fig. 2.4.2 Structure of PWM control register PWM prescaler b7 b6 b5 b4 b3 b2 b1 b0 PWM prescaler (PREPWM) [Address : 2C16] Function At reset cycle is set. The values set in this register is written to both the PWM prescaler pre-latch and the PWM prescaler latch at the same time. When data is written during outputting PWM, the pulses corresponding to the changed contents are output starting with the next cycle. When this register is read out, the content of the PWM prescaler latch is read out. ? B 0 1 2 3 PWM ? ? 4 ? 5 ? 6 ? 7 ? Fig. 2.4.3 Structure of PWM prescaler 2-54 ? 3802 GROUP USER'S MANUAL R W APPLICATION 2.4 PWM PWM register b7 b6 b5 b4 b3 b2 b1 b0 PWM register (PWM) [Address : 2D16] b 0 1 2 3 Function At reset "H" level output period of PWM is set. The values set in this register is written both the PWM register pre-latch and the PWM register latch at the same time. When data is written during outputting PWM, the pulses corresponding to the changed contents are output starting with the next cycle. When this register is read out, the content of the PWM register latch is read out. ? R W ? ? ? 4 ? 5 ? 6 ? 7 ? Fig. 2.4.4 Structure of PWM register 3802 GROUP USER'S MANUAL 2-55 APPLICATION 2.4 PWM 2.4.3 PWM output circuit application example (1) Control of motor Outline : The rotation speed of the motor is controlled by using PWM (pulse width modulation) output. Figure 2.4.5 shows a connection diagram, Figures 2.4.6 shows PWM output timing, and Figure 2.4.7 shows a setting of the related registers. P56/PWM M D-A converter Motor driver 3802 group Fig. 2.4.5 Connection diagram Specifications : * Motor is controlled by using the 8-bit-resolution PWM output function. * Clock f(XIN) = 5.0 MHz * "T," PWM cycle : 102 s * "t," "H" level width of output pulse : 40 s (Fixed speed) A motor speed can be changed by changing the "H" level width of output pluse. t = 40 s PWM output T = 102 s Fig. 2.4.6 PWM output timing 2-56 3802 GROUP USER'S MANUAL APPLICATION 2.4 PWM PWM control register (Address : 2B16) b7 b0 0 1 PWMCON PWM function enable bit : PWM enabled (Note) Count source selection bit : f(XIN) Note : The PWM output function is given priority even when the corresponding bit to P56 pin of Port P5 direction register is set to "0" (input mode). PWM prescaler (Address : 2C16) b7 b0 n PREPWM Set "T", PWM cycle n=1 [Equation] 255 (n + 1) T= f(XIN) Set "t", "H" level width of PWM m = 100 [Equation] Tm t= 255 PWM register (Address : 2D16) b7 b0 m PWM Fig. 2.4.7 Setting of related registers [About PWM output] 1. Set the PWM function enable bit to "1" : The P5 6/PWM pin is used as the PWM pin. "H" level pulse is output first. 2. Set the PWM function enable bit to "0" : The P5 6/PWM pin is used as the port P56. Thus, when fixing the output level, make sure the following. * First, write an output value to bit 6 of the Port P5 register. * Then write "X1XXXXXX2" to the Port P5 direction register. (X : This bit is not used in this application. Set it to "0" or "1." It's value can be disregarded.) 3. After data is set to the PWM prescaler and the PWM register, the PWM waveforms corresponding to new data will be output from the next repetitive cycle. PWM output Change PWM output data From the next repetitive cycle, output modified data Fig. 2.4.8 PWM output 3802 GROUP USER'S MANUAL 2-57 APPLICATION 2.4 PWM Control procedure : By setting the related registers as shown to Figure 2.4.7, PWM waveforms are output to the externalunit. This PWM output is integrated through the low pass filter and converted into DC signals for control of the motor. Figure 2.4.9 shows control procedure. ~ ~ * X : This bit is not used in this application. Set it to "0" or "1." It's value can be disregarded. P5 (Address : 0A16), bit6 P5D (Address : 0B16) 0 X1XXXXXX2 PREPWM (Address : 2C16) PWM (Address : 2D16) PWMCON (Address : 2B16) 1 100 000000012 * Output "L" level from P56/PWM pin. * Set the PWM cycle * Set the "H" level width of PWM * Select the PWM count source, and enable the PWM output. ~ ~ Fig. 2.4.9 Control procedure 2-58 3802 GROUP USER'S MANUAL APPLICATION 2.5 A-D converter 2.5 A-D converter 2.5.1 Memory map of A-D conversion 003416 AD/DA control register (ADCON) 003516 A-D conver sion register (AD) 003D16 Interrupt request register 2 (IREQ2) 003F16 Interrupt control register 2 (ICON2) Fig. 2.5.1 Memory map of A-D conversion related registers 3802 GROUP USER'S MANUAL 2-59 APPLICATION 2.5 A-D converter 2.5.2 Related registers AD/DA control register b7 b6 b5 b4 b3 b2 b1 b0 AD/DA control register (ADCON) [Address : 3416] B Function Name b2 b1 b0 0 Analog input pin selection bits 0 0 0 : P60/AN0 0 0 1 : P61/AN1 0 1 0 : P62/AN2 1 0 1 1 : P63/AN3 1 0 0 : P64/AN4 1 0 1 : P65/AN5 2 1 1 0 : P66/AN6 1 1 1 : P67/AN7 0 : Conversion in progress AD conversion completion bit 3 1 : Conversion completed 4 Nothing is allocated for these bits. These are write disabled bits. 5 When these bits are read out, the values are "0." 0 : DA1 output disable 6 DA1 output enable bit 1 : DA1 output enable 7 DA2 output enable bit 0 : DA2 output disabled 1 : DA2 output enabled At reset R W 0 0 0 1 0 0 0 0 Fig. 2.5.2 Structure of AD/DA control register A-D conversion register b7 b6 b5 b4 b3 b2 b1 b0 A-D conversion register (AD) [Address : 3516] B Function 0 The read-only register which A-D conversion results are stored. 1 2 3 4 5 6 7 Fig. 2.5.3 Structure of A-D conversion register 2-60 3802 GROUP USER'S MANUAL At reset ? ? ? ? ? ? ? ? R W APPLICATION 2.5 A-D converter Interrupt request register 2 b7 b6 b5 b4 b3 b2 b1 b0 Interrupt request reigster 2 (IREQ2) [Address : 3D16] B Name 0 CNTR0 interrupt request bit 1 CNTR1 interrupt request bit 2 Serial I/O2 interrupt request bit 3 INT2 interrupt request bit 4 INT3 interrupt request bit Function At reset R W 0 : No interrupt request 1 : Interrupt request 0 0 : No interrupt request 1 : Interrupt request 0 : No interrupt request 1 : Interrupt request 0 : No interrupt request 1 : Interrupt request 0 : No interrupt request 1 : Interrupt request 0 0 0 0 0 0 0 5 INT4 interrupt request bit 0 : No interrupt request 1 : Interrupt request 0 : No interrupt request 6 AD conversion interrupt request bit 1 : Interrupt request Nothing is allocated for this bit. This is a write disabled bit. 7 When this bit is read out, the value is "0." "0" is set by software, but not "1." Fig. 2.5.4 Structure of Interrupt request register 2 Interrupt control register 2 b7 b6 b5 b4 b3 b2 b1 b0 0 Interrupt control reigster 2 (ICON2) [Address : 3F16] Name B CNTR 0 interrupt enable bit 0 1 CNTR1 interrupt enable bit 2 Serial I/O2 interrupt enable bit 3 INT2 interrupt enable bit 4 INT3 interrupt enable bit Function At reset 0 : Interrupt disabled 1 : Interrupt enabled 0 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 R W 0 0 0 AA AAAAAA AAAAAAA AA AA AA AAAAAAAA AAAAAAA AA AA AA 5 INT4 interrupt enable bit 6 AD conversion interrupt enable bit 7 Fix this bit to "0." 0 0 0 Fig. 2.5.5 Structure of Interrupt control register 2 3802 GROUP USER'S MANUAL 2-61 APPLICATION 2.5 A-D converter 2.5.3 A-D conversion application example Conversion of Analog input voltage Outline : The analog input voltage input from the sensor is converted into digital values. Figure 2.5.6 shows a connection diagram, and Figure 2.5.7 shows a setting of related registers. Sensor P60/AN0 3802 group Fig. 2.5.6 Connection diagram [Conversion of Analog input voltage] Specifications : * The analog input voltage input from the sensor is converted into digital values. * The P6 0/AN 0 pin is used as an analog input pin. AA A AD/DA control register (Address : 3416) b7 ADCON b0 0 0 0 0 Analog input pin selection bits : Select the P60/AN0 pin AD conversion completion bit : Conversion in progress A-D conversion register (Address : 3516) b7 AD b0 (read-only) Store a result of A-D conversion (Note) Note: Read out a result of A-D conversion after bit 3 of the AD/DA control register (ADCON) is set to "1." Fig. 2.5.7 Setting of related registers [Conversion of Analog input voltage] 2-62 3802 GROUP USER'S MANUAL APPLICATION 2.5 A-D converter Control procedure : By setting the related registers as shown in Figure 2.5.7, the analog input voltage input from the sensor are converted into digital values. ~ ~ ADCON (Address : 3416), bit0 - bit2 ADCON (Address : 3416), bit3 ADCON (Address : 3416), bit3? * Select the P60/AN0 pin as an analog input pin. * Start A-D conversion. 0002 0 0 * Check the completion of A-D conversion. 1 Read out AD (Address : 3516) * Read out the conversion result. ~ ~ Fig. 2.5.8 Control procedure [Conversion of Analog input voltage] 3802 GROUP USER'S MANUAL 2-63 APPLICATION 2.6 Processor mode 2.6 Processor mode 2.6.1 Memory map of processor mode 003B16 CPU mode register (CPUM ) Fig. 2.6.1 Memory map of processor mode related register 2.6.2 Related register CPU mode register b7 b6 b5 b4 b3 b2 b1 b0 CPU mode register (CPUM) [Adress : 3B16] B Name 0 Processor mode bits 1 2 Stack page selection bit Function 00 : Single-chip mode 01 : Memory expansion mode 10 : Microprocessor mode 11 : Not available 0 : 0 page 1 : 1 page 3 Nothing is allocated for these bits. These are write disabled bits. 4 When these bits are read out, the values are "0." 5 6 7 An initial value of bit 1 is determined by a level of the CNVSS pin. Fig. 2.6.2 Structure of CPU mode register 2-64 3802 GROUP USER'S MANUAL At reset R W 0 0 0 0 0 0 0 APPLICATION 2.6 Processor mode 2.6.3 Processor mode application examples ____ (1) Application example of memory expansion in the case where the ONW (One-Wait) function is not used Outline : The external memory is accessed in the microprocessor mode. At___ f(X IN) = 8 MHz, an available RAM is given by the following : * OE access time : ta (OE) 50 ns * Setup time for writing data : tsu (D) 65 ns For example, the M5M5256BP-10 whose address access is 100 ns is available. Figure 2.6.3 shows an expansion example of a 32K byte ROM and a 32K byte RAM. 3802 group CNVSS AD15 ONW 2 M5M27C256AK-10 P30, P31 AD14 - 15 P4 S A0-A14 A0-A14 EPROM DB0 - DB7 8 CE 74F04 AD0 8 8 D0-D7 SRAM DQ1-DQ8 Memory map OE P5 M5M5256BP-10 OE W 000016 External RAM area (M5M5256BP) 000816 SFR area 004016 Internal RAM area 044016 External RAM area RD 8 P6 WR (M5M5256BP ) 8MHz VCC = 5.0V 10 % 800016 External ROM area (M5M27C256AK ) FFFF16 Fig. 2.6.3 Expansion example of ROM and RAM 3802 GROUP USER'S MANUAL 2-65 APPLICATION 2.6 Processor mode Figure 2.6.4, Figure 2.6.5 and Figure 2.6.6 show a standard timing at 8 MHz (No-Wait). A0-A7 Address (low-order) (Port P0) A8-A14 Address (high-order) (Port P1) S (A15) tWL(RD) td(AH - RD) OE (RD of 3802) ,,,,,,, ,,,,,,, 125 ns - 10 ns (min) 125 ns - 35 ns (min) ta(OE) 50 ns (max) Data DQ1-DQ8 (Port P2) tsu(DB - RD) 65 ns (min) WR " H " level td(AH - RD) tWL(RD) ta(OE) tsu(DB - RD) : RD delay time after outputting address of 3802 : RD pulse width of 3802 : Output enabled access time of M5M5256BP : Data bus setup time before RD of 3802 Fig. 2.6.4 Read-cycle (OE access, SRAM) A0-A7 Address (low-order) (Port P0) A8-A14 Address (high-order) (Port P1) CE tPHL 5.8 ns (max) tWL(RD) td(AH - RD) OE (RD of 3802) ,,,,,,, ,,,,,,, 125 ns - 10ns (min) 125 ns - 35 ns (min) ta(OE) 50 ns (max) D0-D7 (Port P2) Data tsu(DB - RD) 65 ns (min) WR " H " level tPHL td(AH - RD) tWL(RD) ta(OE) tsu(DB - RD) : : : : : Output delay time of 74F04 RD delay time after outputting address of 3802 RD pulse width of 3802 Output enabled access time of M5M27C256AK Data bus setup time before RD of 3802 Fig. 2.6.5 Read-cycle (OE access, EPROM) 2-66 3802 GROUP USER'S MANUAL APPLICATION 2.6 Processor mode A0-A7 Address (low-order) (Port P0) A8-A14 Address (high-order) (Port P1) S (A15) tWL(WR) td(AH - WR) W (WR of 3802) 125 ns - 35 ns (min) ,,,,,,, ,,,,,,, 125 ns - 10 ns (min) td(WR - DB) 65 ns (max) DQ1-DQ8 Data (Port P2) tsu(D) 35 ns (min) OE (RD of 3802) " H " level td(AH - WR) tWL(WR) td(WR - DB) tsu(D) : WR delay time after outputting address of 3802 : WR pulse width of 3802 : Data bus delay time after WR of 3802 : Data setup time of M5M5256BP Fig. 2.6.6 Write-cycle (W control, SRAM) 3802 GROUP USER'S MANUAL 2-67 APPLICATION 2.6 Processor mode _____ (2) Application example of memory expansion in the case where the ONW (One-Wait) function is____ used Outline : ONW function is used when the external memory access is slow. ____ If "L" level signal is input to the P32/ ONW pin while the CPU is in the read or write status, the read or___ write cycle corresponding to 1 cycle of____is extended. In the extended period, ___ the RD or WR signal is kept at the "L" level. The ONW function operates only when data is 16 to 000716 and addresses 044016 to FFFF 16 . read from or written into addresses 0000____ Figure 2.6.7 shows an application example of the ONW function. 3802 group CNVSS 2 AD15 74F04 M5M27C 256A K-10 P30, P31 ONW CE M5M5256B P-10 S AD14 P4 15 - 8 A0-A14 A0-A14 AD0 EPRO M DB0 P5 - 8 8 DB7 D0-D7 OE SRAM DQ1-DQ8 OE W Memory map 000016 External RAM area (M5M5256B P ) 000816 8 P6 SFR area 004016 Internal RAM area 044016 External RAM area RD WR (M5M5256B P ) 8MH z VCC = 5.0V10 % 800016 External ROM area FFFF16 ____ Fig. 2.6.7 Application example of the ONW function 2-68 3802 GROUP USER'S MANUAL (M5M27C256A K ) APPLICATION 2.7 Reset 2.7 Reset 2.7.1 Connection example of reset IC 91 VCC 1 Power source M62022L 5 Output 35 RESET Delay capacity 4 GND 0.1 F 40 3 VSS 3802 group Fig. 2.7.1 Example of Poweron reset circuit Figure 2.7.2 shows the system example which switch to the RAM backup mode by detecting a drop of the system power source voltage with the INT interrupt. System power source voltage +5 91 + VCC 7 VCC1 RESET 2 INT VCC2 5 35 3 INT 40 1 V1 GND Cd RESET 6 4 VSS 3802 group M62009L, M62009P, M62009FP Fig. 2.7.2 RAM back-up system 3802 GROUP USER'S MANUAL 2-69 CHAPTER 3 APPENDIX 3.1 Electrical characteristics 3.2 Standard characteristics 3.3 Notes on use 3.4 Countermeasures against noise 3.5 List of registers 3.6 Mask ROM ordering method 3.7 Mark specification form 3.8 Package outline 3.9 List of instruction codes 3.10 Machine instructions 3.11 SFR memory map 3.12 Pin configuration APPENDIX 3.1 Electrical characteristics 3.1Electrical characteristics 3.1.1 ABSOLUTE MAXIMUM RATINGS Table 3.1.1 Absolute maximum ratings Symbol Parameter VCC Power source voltage Input voltage P00-P07, P10 -P17, P20-P27 , P30-P37, P40 -P47, P50-P57 , VI P60-P67, VREF VI Input voltage RESET, XIN VI Input voltage CNVSS Output voltage P00-P07, P10 -P17, P20-P27 , P30-P37, P40 -P47, P50-P57 , VO P60-P67, XOUT Pd Power dissipation Topr Operating temperature Tstg Storage temperature Conditions All voltages are based on VSS. Output transistors are cut off. Ta = 25 C Ratings -0.3 to 7.0 Unit V -0.3 to V CC +0.3 V -0.3 to VCC +0.3 -0.3 to 13 V V -0.3 to VCC +0.3 V 1000 (Note) -20 to 85 -40 to 125 mW C C Note: 300 mW in case of the flat package. 3.1.2 Recommended operating conditions Table 3.1.2 RECOMMENDED OPERATING CONDITIONS (Vcc = 3.0 to 5.5 V, Ta = -20 to 85C, unless otherwise noted) Limits Symbol Parameter Min. Typ. Max. Power source voltage (f(XIN) < 2 MHz) (Note 1) 3.0 5.0 5.5 VCC Power source voltage (f(XIN) = 8 MHz) (Note 1) 4.0 5.0 5.5 VSS Power source voltage 0 Analog reference voltage (when A-D converter is used) 2.0 VCC VREF Analog reference voltage (when D-A converter is used) 3.0 VCC AVSS Analog power source voltage 0 VIA Analog input voltage AN0 -AN7 AVSS VCC "H" input voltage P00-P07, P10 -P17, P20-P27 , P30-P37, P40-P47 , VIH 0.8 V CC VCC P50-P57, P60 -P67 VIH "H" input voltage RESET, XIN, CNV SS 0.8 VCC VCC "L" input voltage P00-P07, P10 -P17, P20-P27 , P30-P37, P40-P47 , VIL 0 0.2 VCC P50-P57, P60 -P67 VIL "L" input voltage RESET, CNV SS 0.2 VCC 0 VIL "L" input voltage XIN 0.16 VCC 0 I OH(peak) "H" total peak output current P00-P07 , P10 -P17 , P20 -P27, P3 0-P37 (Note 2) -80 I OH(peak) "H" total peak output current P40-P47,P5 0-P57, P60 -P67 (Note 2) -80 I OL(peak) "L" total peak output current P00-P07 , P10 -P17 , P20 -P27, P3 0-P37 (Note 2) 80 I OL(peak) "L" total peak output current P40-P47,P5 0-P57, P60 -P67 (Note 2) 80 I OH(avg) "H" total average output current P00-P07 , P10 -P17 , P20 -P27, P3 0-P37 (Note 2) -40 I OH(avg) "H" total average output current P40-P47,P5 0-P57, P60 -P67 (Note 2) -40 I OL(avg) "L" total average output current P00-P07 , P10 -P17 , P20 -P27, P3 0-P37 (Note 2) 40 I OL(avg) "L" total average output current P40-P47,P5 0-P57, P60 -P67 (Note 2) 40 "H" peak output current P00-P07, P10 -P17, P20-P27 , P30-P37, P40-P47 , IOH(peak) -10 P50-P57, P60 -P67 (Note 3) "L" peak output current P00-P07, P10 -P17, P20-P27 , P30-P37, P40-P47 , IOL(peak) 10 P50-P57, P60 -P67 (Note 3) "H" average output current P00-P07, P10 -P17, P20-P27 , P30-P37, P40-P47 , IOH(avg) -5 P50-P57, P60 -P67 (Note 4) "L" average output current P00-P07, P10 -P17, P20-P27 , P30-P37, P40-P47 , IOL(avg) 5 P50-P57, P60 -P67 (Note 4) Internal clock oscillation frequency (VCC = 4.0 to 5.5 V) 8 f(XIN) Internal clock oscillation frequency (VCC = 3.0 to 4.0 V) 6 VCC-16 Note 1: The total output current is the sum of all the currents flowing through all the applicable ports. The total average current is an average value measured over 100 ms. The total peak current is the peak value of all the currents. 2: The peak output current is the peak current flowing in each port. 3: The average output current I OL(avg), IOH(avg) in an average value measured over 100 ms. 3-2 3802 GROUP USER'S MANUAL Unit V V V V V V V V V V mA mA mA mA mA mA mA mA mA mA mA mA MHz APPENDIX 3.1 Electrical characteristics 3.1.3 Electrical characteristics Table 3.1.3 ELECTRICAL CHARACTERISTICS (VCC = 3.0 to 5.5 V, V SS = 0 V, Ta = -20 to 85 C, unless otherwise noted) Symbol Parameter Test conditions "H" output voltage P00-P0 7, P10-P1 7, P20-P2 7, P30-P3 7, P40-P4 7, P50-P5 7, P60-P6 7 (Note 1) VOH "L" output voltage P00-P0 7, P10-P1 7, P20-P2 7, P30-P3 7, P40-P4 7,P50-P57, P60-P6 7 VOL VT+ - V T- VT+ - V T- VT+ - V T- Hysteresis Hysteresis Hysteresis "H" input current I IH I IH I IH "H" input current "H" input current "L" input current I IL CNTR0, CNTR 1, INT0-INT 4 RX D, SCLK1, SIN2 , SCLK2 RESET P00-P0 7, P10-P1 7, P20-P2 7, P30-P3 7, P40-P4 7, P50-P5 7, P60-P6 7 RESET, CNVSS X IN P00-P0 7, P10-P1 7, P20-P2 7, P30-P3 7, P40-P4 7, P50-P5 7, P60-P6 7, RESET, CNVSS RESET, CNVSS X IN Min. IOH = -10 mA VCC = 4.0 to 5.5 V IOH = -1.0 mA VCC = 3.0 to 5.5 V IOL = 10 mA VCC = 4.0 to 5.5 V IOL = 1.0 mA VCC = 3.0 to 5.5 V Limits Typ. Max. Unit VCC-2.0 V VCC-1.0 2.0 V 1.0 0.4 0.5 0.5 V V V VI = VCC 5.0 A VI = V CC VI = V CC 5.0 A A -5.0 A 4 VI = V SS -5.0 A VI = V SS -4 A VI = V SS 5.5 2.0 V When clock stopped 13 6.4 f(XIN) = 8 MHz, VCC = 5 V 8 4 f(XIN) = 5 MHz, VCC = 5 V 2.0 0.8 f(XIN) = 2 MHz, VCC = 3 V When WIT instruction is executed with 1.5 mA f(Xin) = 8MHz,VCC=5V When WIT instruction is executed with 1 I CC Power source current f(Xin) = 5MHz,VCC=5V When WIT instruction is executed with 0.2 f(Xin) = 2MHz,VCC=3V When STP instruction Ta = 25 C 1 0.1 is executed with clock (Note 2) A stopped, output Ta = 85 C 10 transistors isolated. (Note 2) Note 1: P45 is measured when the P45/TXD P-channel output disable bit of the UART control register (bit 4 of address 001B16 ) is "0". P51 is measured when the P51/SOUT2 P-channel output disable bit of the serial I/O2 control register (bit 7 of address 001D16) is "0". 2: With output transistors isolated and A-D converter having completed conversion, and not including current flowing through V REF pin. I IL I IL VRAM "L" input current "L" input current RAM hold voltage 3.1.4 A-D converter characteristics Table 3.1.4 A-D CONVERTER CHARACTERISTICS (V CC = 3.0 to 5.5 V, VSS = AVSS = 0 V, VREF = 2.0 V to VCC, Ta = -20 to 85 C, unless otherwise noted) Symbol -- -- t CONV RLADDER I VREF I I(AD) Test conditions Parameter Min. Resolution Absolute accuracy (excluding quantization error) Conversion time Ladder resistor Reference power source input current (Note) A-D port input current Limits Typ. 1 VREF = 5.0 V 50 Max. 8 2.5 50 35 150 200 0.5 5.0 Unit Bits LSB tC () k A A Note: When D-A conversion registers (addresses 0036 16 and 003716 ) contain "0016". 3802 GROUP USER'S MANUAL 3-3 APPENDIX 3.1 Electrical characteristics 3.1.5 D-A CONVERTER CHARACTERISTICS Table 3.1.5 D-A CONVERTER CHARACTERISTICS (VCC = 3.0 to 5.5 V, V SS = AVSS = 0 V, VREF = 3.0 V to VCC, Ta = -20 to 85 C, unless otherwise noted) Limits Symbol Parameter Test conditions Unit Min. Typ. Max. -- Resolution 8 Bits VCC = 4.0 to 5.5 V 1.0 -- Absolute accuracy % VCC = 3.0 to 4.0 V 2.5 Setting time 3 s t su RO Output resistor 1 2.5 4 k I VREF Reference power source input current (Note) 3.2 mA Note: Using one D-A converter, with the value in the D-A conversion register of the other D-A converter being "0016", and excluding currents flowing through the A-D resistance ladder. 3-4 3802 GROUP USER'S MANUAL APPENDIX 3.1 Electrical characteristics 3.1.6 Timing requirements and Switching characteristics Table 3.1.6 TIMING REQUIREMENTS (1) (VCC = 4.0 to 5.5 V, VSS = 0 V, Ta = -20 to 85 C, unless otherwise noted) Symbol t w(RESET) t c(X IN) t wH(XIN) t wL(XIN) t c(CNTR) t wH(CNTR) t wH(INT) t wL(CNTR) t wL(INT) t c(S CLK1) t c(S CLK2) t wH(SCLK1) t wH(SCLK2) t wL(SCLK1) t wL(SCLK2) tsu(R XD-SCLK1) tsu(SIN2-S CLK2) th(S CLK1-RX D) th(S CLK2-SIN2) Parameter Reset input "L" pulse width External clock input cycle time External clock input "H" pulse width External clock input "L" pulse width CNTR0, CNTR1 input cycle time CNTR0, CNTR1 input "H" pulse width INT0 to INT4 input "H" pulse width CNTR0, CNTR1 input "L" pulse width INT0 to INT4 input "L" pulse width Serial I/O1 clock input cycle time (Note) Serial I/O2 clock input cycle time Serial I/O1 clock input "H" pulse width (Note) Serial I/O2 clock input "H" pulse width Serial I/O1 clock input "L" pulse width (Note) Serial I/O2 clock input "L" pulse width Serial I/O1 input set up time Serial I/O2 input set up time Serial I/O1 input hold time Serial I/O2 input hold time Min. 2 125 50 50 200 80 80 80 80 800 1000 370 400 370 400 220 200 100 200 Limits Typ. Max. Unit s ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns Note: When f(XIN) = 8 MHz and bit 6 of address 001A16 is "1". Divide this value by four when f(XIN) = 8 MHz and bit 6 of address 001A16 is "0". Table 3.1.7 TIMING REQUIREMENTS (2) (VCC = 3.0 to 5.5 V, VSS = 0 V, Ta = -20 to 85 C, unless otherwise noted) Symbol Parameter tw(RESET) Reset input "L" pulse width tc(X IN) External clock input cycle time twH(XIN) External clock input "H" pulse width twL(XIN) External clock input "L" pulse width tc(CNTR) twH(CNTR) twH(INT) twL(CNTR) twL(INT) tc(S CLK1) tc(S CLK2) twH(SCLK1 ) twH(SCLK2 ) twL(SCLK1) twL(SCLK2) tsu(RX D-SCLK1) tsu(SIN2-SCLK2) th(SCLK1-RX D) th(SCLK2-S IN2) CNTR0, CNTR1 input cycle time CNTR0, CNTR1 input "H" pulse width INT0 to INT4 input "H" pulse width CNTR0, CNTR1 input "L" pulse width INT0 to INT4 input "L" pulse width Serial I/O1 clock input cycle time (Note) Serial I/O2 clock input cycle time Serial I/O1 clock input "H" pulse width (Note) Serial I/O2 clock input "H" pulse width Serial I/O1 clock input "L" pulse width (Note) Serial I/O2 clock input "L" pulse width Serial I/O1 input set up time Serial I/O2 input set up time Serial I/O1 input hold time Serial I/O2 input hold time Min. 2 500/ (3 V CC-8) 200/ (3 V CC-8) 200/ (3 V CC-8) 500 230 230 230 230 2000 2000 950 950 950 950 400 400 200 300 Limits Typ. Max. Unit s ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns Note: When f(XIN) = 2 MHz and bit 6 of address 001A16 is "1". Divide this value by four when f(XIN) = 2 MHz and bit 6 of address 001A16 is "0". 3802 GROUP USER'S MANUAL 3-5 APPENDIX 3.1 Electrical characteristics Table 3.1.8 SWITCHING CHARACTERISTICS (1) (VCC = 4.0 to 5.5 V, VSS = 0 V, Ta = -20 to 85 C, unless otherwise noted) Symbol t wH(SCLK1) t wH(SCLK2) t wL(SCLK1) t wL(SCLK2) td(SCLK1 -TXD) td(SCLK2-S OUT2) tv(SCLK1-TX D) tv(SCLK2-SOUT2 ) t r(SCLK1 ) t f(SCLK1) t r(SCLK2 ) t f(SCLK2) t r(CMOS) t f(CMOS) Parameter Serial I/O1 clock output "H" pulse width Serial I/O2 clock output "H" pulse width Serial I/O1 clock output "L" pulse width Serial I/O2 clock output "L" pulse width Serial I/O1 output delay time (Note 1) Serial I/O2 output delay time (Note 2) Serial I/O1 output valid time (Note 1) Serial I/O2 output valid time (Note 2) Serial I/O1 clock output rising time Serial I/O1 clock output falling time Serial I/O2 clock output rising time Serial I/O2 clock output falling time CMOS output rising time (Note 3) CMOS output falling time (Note 3) Test conditions Min. Limits Typ. Max. t c(SCLK1)/2-30 t c(SCLK2)/2-160 t c(SCLK1)/2-30 t c(SCLK2)/2-160 140 200 Fig. 3.1.1 -30 0 30 30 30 40 30 30 10 10 Unit ns ns ns ns ns ns ns ns ns ns ns ns ns ns Note1: When the P45/T XD P-channel output disable bit of the UART control register (bit 4 of address 001B16 ) is "0". 2: When the P51 /SOUT2 P-channel output disable bit of the serial I/O2 control register (bit 7 of address 001D16 ) is "0". 3: XOUT pin is excluded. Table 3.1.9 SWITCHING CHARACTERISTICS (2) (VCC = 3.0 to 5.5 V, VSS = 0 V, Ta = -20 to 85 C, unless otherwise noted) Symbol t wH(SCLK1) Parameter t wH(SCLK2) t wL(SCLK1) Serial I/O1 clock output "H" pulse width Serial I/O2 clock output "H" pulse width Serial I/O1 clock output "L" pulse width t wL(SCLK2) td(SCLK1 -TXD) td(SCLK2-S OUT2) tv(SCLK1-TX D) tv(SCLK2-SOUT2 ) t r(SCLK1 ) t f(SCLK1) t r(SCLK2 ) t f(SCLK2) t r(CMOS) t f(CMOS) Serial I/O2 clock output "L" pulse width Serial I/O1 output delay time (Note 1) Serial I/O2 output delay time (Note 2) Serial I/O1 output valid time (Note 1) Serial I/O2 output valid time (Note 2) Serial I/O1 clock output rising time Serial I/O1 clock output falling time Serial I/O2 clock output rising time Serial I/O2 clock output falling time CMOS output rising time (Note 3) CMOS output falling time (Note 3) Test conditions Min. Limits Typ. 350 400 Fig. 3.1.1 -30 0 20 20 3802 GROUP USER'S MANUAL Unit ns ns ns t c(SCLK1)/2-50 t c(SCLK2)/2-240 t c(SCLK1)/2-50 t c(SCLK2)/2-240 Note1: When the P45 /TXD P-channel output disable bit of the UART control register (bit 4 of address 001B 16) is "0". 2: When the P51/S OUT2 P-channel output disable bit of the serial I/O2 control register (bit 7 of address 001D 16) is "0". 3: X OUT pin is excluded. 3-6 Max. 50 50 50 50 50 50 ns ns ns ns ns ns ns ns ns ns ns APPENDIX 3.1 Electrical characteristics Table 3.1.10 TIMING REQUIREMENTS 1 IN MEMORY EXPANSION MODE AND MICROPROCESSOR MODE (1) (VCC = 4.0 to 5.5 V, VSS = 0 V, Ta = -20 to 85 C, unless otherwise noted) Symbol t su(ONW-) t h(-ONW) t su(DB-) t h(-DB) t su(ONW-RD) t su(ONW-WR) t h(RD-ONW) t h(WR-ONW) t su(DB-RD) t h(RD-DB) Limits Parameter Min. -20 -20 60 0 Before ONW input set up time After ONW input hold time Before data bus set up time After data bus hold time Before RD ONW input set up time Before WR ONW input set up time After RD ONW input hold time After WR ONW input hold time Before RD data bus set up time After RD data bus hold time Typ. Max. Unit ns ns ns ns -20 ns -20 ns 65 0 ns ns Table 3.1.11 SWITCHING CHARATERISTICS 1 IN MEMORY EXPANSION MODE AND MICROPROCESSOR MODE (1) (VCC = 4.0 to 5.5 V, VSS = 0 V, Ta = -20 to 85 C, unless otherwise noted) Symbol Parameter Test conditions clock cycle time clock "H" pulse width clock "L" pulse width After AD 15-AD 8 delay time After AD 15-AD 8 valid time After AD 7-AD0 delay time After AD 7-AD 0 valid time SYNC delay time SYNC valid time RD and WR delay time RD and WR valid time After data bus delay time After data bus valid time RD pulse width, WR pulse width t wL(RD) RD pulse width, WR pulse width t wL(WR) (When one-wait is valid) t d(AH-RD) After AD15 -AD 8 RD delay time t d(AH-WR) After AD15 -AD8 WR delay time t d(AL-RD) After AD7 -AD0 RD delay time t d(AL-WR) After AD7 -AD0 WR delay time t v(RD-AH) After RD AD 15-AD 8 valid time t v(WR-AH) After WR AD 15-AD 8 valid time t v(RD-AL) After RD AD 7-AD 0 valid time t v(WR-AL) After WR AD 7-AD 0 valid time t d(WR-DB) After WR data bus delay time t v(WR-DB) After WR data bus valid time td(RESET-RESETOUT ) RESETOUT output delay time (Note 1) t v(-RESET) RESET OUT output valid time (Note 1) t c() t wH() t wL() t d(-AH) t v(-AH) t d(-AL) t v(-AL) t d(-SYNC) t v(-SYNC) t d(-WR) t v(-WR) t d(-DB) t v(-DB) Limits Min. Typ. 2t c(XIN) Max. 20 10 25 10 20 10 10 5 20 40 15 t c(XIN)-10 ns ns ns ns ns ns ns ns ns ns ns ns ns ns 3tc(X IN)-10 ns t c(XIN)-10 t c(XIN)-10 6 6 3 Fig. 3.1.1 Unit 45 20 10 70 t c(XIN)-35 tc(XIN)-15 ns t c(XIN)-40 tc(XIN)-20 ns 0 5 ns 0 5 ns 15 65 10 0 200 200 ns ns ns ns Note 1: The RESET OUT output goes "H" in sync with the rise of the clock that is anywhere between about 8 cycle and 13 cycles after the RESET input goes "H". 3802 GROUP USER'S MANUAL 3-7 APPENDIX 3.1 Electrical characteristics Table 3.1.12 TIMING REQUIREMENTS IN MEMORY EXPANSION MODE AND MICROPROCESSOR MODE (2) (VCC = 3.0 V, VSS = 0 V, Ta = -20 to 85 C, unless otherwise noted) Symbol t su(ONW-) t h(-ONW) t su(DB-) t h(-DB) t su(ONW-RD) t su(ONW-WR) th (RD-ONW) t h(WR-ONW) t su(DB-RD) t h(RD-DB) Parameter Min. Before ONW input set up time After ONW input hold time Before data bus set up time After data bus hold time Before RD ONW input set up time Before WR ONW input set up time After RD ONW input hold time After WR ONW input hold time Before RD data bus set up time After RD data bus hold time Limits Typ. Max. Unit -20 -20 180 0 ns ns ns ns -20 ns -20 ns 185 0 ns ns Table 3.1.13 SWITCHING CHARACTERISTICS 2 IN MEMORY EXPANSION MODE AND MICROPROCESSOR MODE (2) (V CC = 3.0 V, VSS = 0 V, Ta = -20 to 85 C, unless otherwise noted) Symbol Parameter Test conditions Min. Limits Typ. clock cycle time 2t c(XIN) clock "H" pulse width tc(X IN)-20 clock "L" pulse width tc(X IN)-20 After AD 15-AD 8 delay time After AD 15-AD 8 valid time 15 10 After AD 7-AD0 delay time After AD 7-AD 0 valid time 15 10 SYNC delay time 40 SYNC valid time 20 RD and WR delay time 15 RD and WR valid time 7 3 After data bus delay time After data bus valid time 15 Fig. 3.1.1 RD pulse width, WR pulse width tc(X IN)-20 t wL(RD) RD pulse width, WR pulse width t wL(WR) 3t c(XIN) -20 (when one-wait is valid) t d(AH-RD) After AD15 -AD 8 RD delay time t c(XIN) -145 t d(AH-WR) After AD15 -AD8 WR delay time t d(AL-RD) After AD7 -AD0 RD delay time t c(XIN) -145 t d(AL-WR) After AD7 -AD0 WR delay time t v(RD-AH) After RD AD 15-AD 8 valid time 10 5 t v(WR-AH) After WR AD 15-AD 8 valid time t v(RD-AL) After RD AD 7-AD 0 valid time 10 5 t v(WR-AL) After WR AD 7-AD 0 valid time t d(WR-DB) After WR data bus delay time t v(WR-DB) After WR data bus valid time 10 td(RESET-RESETOUT ) RESETOUT output delay time (Note 1) t v(-RESET) RESET OUT output valid time (Note 1) 0 Note1: The RESET OUT output goes "H" in sync with the fall of the clock that is anywhere between about 8 cycle and the RESET input goes "H". t c() t wH() t wL() t d(-AH) t v(-AH) t d(-AL) t v(-AL) t d(-SYNC) t v(-SYNC) t d(-WR) t v(-WR) t d(-DB) t v(-DB) 3-8 3802 GROUP USER'S MANUAL Max. 150 150 25 15 200 Unit ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns 195 300 300 ns ns ns ns 13 cycles after APPENDIX 3.1 Electrical characteristics 3.1.7 Absolute maximum ratings (Extended operating temperature version) Table 3.1.14 Absolute maximum ratings (Extended operating temperature version) Symbol Parameter Conditions VCC Power source voltage Input voltage P00-P07, P10-P17 , P20-P27, P30-P37, P40-P47 , P50-P57, VI P60-P67, VREF All voltage are based on VSS . VI Input voltage RESET, XIN Output transistors are cut off. VI Input voltage CNVSS Output voltage P00-P07, P10-P17 , P20-P27, P30-P37, P40-P47 , P50-P57, VO P60-P67, XOUT Pd Power dissipation Ta = 25 C Topr Operating temperature Tstg Storage temperature Ratings -0.3 to 7.0 Unit V -0.3 to VCC +0.3 V -0.3 to V CC +0.3 -0.3 to 13 V V -0.3 to V CC +0.3 V 1000 (Note) -40 to 85 -65 to 150 mW C C Note: 300mW in case of the flat package 3.1.8 Recommended operatinmg conditions (Extended operating temperature version) Table 3.1.15 Recommended operating conditions (Extended operating temperature version) (VCC = 4.0 to 5.5 V, Ta = -40 to 85 C, unless otherwise noted) Limits Symbol Parameter Unit Min. Typ. Max. 5.5 VCC 4.0 V 5.0 Power source voltage (f(XIN) 2 MHz) VSS V 0 Power source voltage VCC 2.0 Analog reference voltage (when A-D converter is used) V VREF 4.0 VCC Analog reference voltage (when D-A converter is used) AVSS 0 V Analog power source voltage VIA AVSS VCC V Analog input voltage AN 0-AN 7 VIH "H" input voltage VIH "H" input voltage VIL "L" input voltage VIL VIL I OH(peak) I OH(peak) I OL(peak) I OL(peak) I OH(avg) I OH(avg) I OL(avg) I OL(avg) IOH(peak) IOL(peak) IOH(avg) IOL(avg) f(XIN) P00-P07, P1 0-P17, P20-P27 , P30-P37, P40 -P47, P50-P57, P6 0-P67 RESET, XIN, CNV SS P00-P07, P1 0-P17, P20-P27 , P30-P37, P40 -P47, P50-P57, P6 0-P67 "L" input voltage RESET, CNV SS "L" input voltage XIN "H" total peak output current P00 -P07, P1 0-P17 , P20 -P27, P3 0-P37 (Note 1) "H" total peak output current P40-P47,P5 0-P57, P6 0-P67 (Note 1) "L" total peak output current P00 -P07, P1 0-P17 , P20 -P27, P3 0-P37 (Note 1) "L" total peak output current P40-P47,P5 0-P57, P6 0-P67 (Note 1) "H" total average output current P00 -P07, P1 0-P17 , P20 -P27, P3 0-P37 (Note 1) "H" total average output current P40-P47,P5 0-P57, P6 0-P67 (Note 1) "L" total average output current P00 -P07, P1 0-P17 , P20 -P27, P3 0-P37 (Note 1) "L" total average output current P40-P47,P5 0-P57, P6 0-P67 (Note 1) "H" peak output current P00-P07, P1 0-P17, P20-P27 , P30-P37, P40 -P47, P50-P57, P60 -P67 (Note 2) "L" peak output current P00-P07, P1 0-P17, P20-P27 , P30-P37, P40 -P47, P50-P57, P60 -P67 (Note 2) "H" average output current P00-P07, P1 0-P17, P20-P27 , P30-P37, P40 -P47, P50-P57, P60 -P67 (Note 3) "L" average output current P00-P07, P1 0-P17, P20-P27 , P30-P37, P40 -P47, P50-P57, P60 -P67 (Note 3) Internal clock oscillation frequency (VCC = 4.0 to 5.5 V) 0.8 VCC VCC V 0.8 VCC VCC V 0 0.2 VCC V 0 0 0.2 VCC 0.16 V CC -80 -80 80 80 -40 -40 40 40 V V mA mA mA mA mA mA mA mA -10 mA 10 mA -5 mA 5 mA 8 MHz Note 1: The total output current is the sum of all the currents flowing through all the applicable ports. The total average current is an average value measured over 100 ms. The total peak current is the peak value of all the currents. 2: The peak output current is the peak current flowing in each port. 3: The average output current IOL(avg), IOH(avg) in an average value measured over 100 ms. 3802 GROUP USER'S MANUAL 3-9 APPENDIX 3.1 Electrical characteristics 3.1.9 Electrical characteristics (Extended operating temperature version) Table 3.1.16 Electrical characteristics (Extended operating temperature version) (VCC = 4.0 to 5.5 V, VSS = 0 V, Ta = -40 to 85 C, unless otherwise noted) Symbol VOH VOL VT+ - VT- VT+ - VT- VT+ - VT- I IH I IH I IH I IL I IL VRAM I CC Parameter Test conditions "H" output voltage P00-P0 7, P10-P1 7, P20-P27, P30-P3 7, P40-P4 7, P50-P57, P60-P6 7 (Note 1) "L" output voltage P00-P0 7, P10-P1 7, P20-P27, P30-P3 7, P40-P4 7,P50-P5 7, P60-P6 7 Hysteresis CNTR0, CNTR 1, INT0-INT4 Hysteresis RXD, SCLK1, SIN2, SCLK2 Hysteresis RESET "H" input current P00-P0 7, P10-P1 7, P20-P27, P30-P3 7, P40-P4 7, P50-P57, P60-P6 7 "H" input current RESET, CNVSS "H" input current XIN "L" input current P00-P0 7, P10-P1 7, P20-P27, P30-P3 7, P40-P4 7, P50-P57, P60-P6 7, RESET, CNV SS "L" input current XIN RAM hold voltage Power source current IOH = -10 mA Limits Min. Typ. Max. VCC-2.0 Unit V 2.0 IOL = 10 mA 0.4 0.5 0.5 V V V V VI = VCC 5.0 A VI = V CC VI = V CC 5.0 A A -5.0 A 4 VI = VSS VI = VSS When clock stopped f(XIN) = 8 MHz f(XIN) = 5 MHz When WIT instruction is executed with f(XIN) = 8 MHz When WIT instruction is executed with f(XIN) = 5 MHz When STP instruction Ta = 25 C is executed with clock (Note 2) stopped, output Ta = 85 C transistors isolated. (Note 2) -4 2.0 6.4 4 5.5 13 8 A V mA 1.5 1 0.1 1 A 10 Note 1: P45 is measured when the P45/TXD P-channel output disable bit of the UART control register (bit 4 of address 001B16 ) is "0". P51 is measured when the P51/SOUT2 P-channel output disable bit of the serial I/O2 control register (bit 7 of address 001D16) is "0". 2: With output transistors isolated and A-D converter having completed conversion, and not including current flowing through V REF pin. 3.1.10 A-D converter characteristics (Extended operating temperature version) Table 3.1.17 A-D CONVERTER CHARACTERISTICS (Extended operating temperature version) (VCC = 4.0 to 5.5 V, VSS = AVSS = 0 V, VREF = 2.0 V to VCC, Ta = -40 to 85 C, unless otherwise noted) Symbol Parameter -- -- Resolution Absolute accuracy (excluding quantization error) Conversion time Ladder resistor Reference power source input current (Note) A-D port input current t CONV RLADDER I VREF I I(AD) Test conditions Limits Typ. 1 VREF = 5.0 V Note: When D-A conversion registers (addresses 0036 16 and 0037 16) contain "0016 ". 3-10 Min. 3802 GROUP USER'S MANUAL 50 35 150 0.5 Max. 8 2.5 50 200 5.0 Unit Bits LSB t C() k A A APPENDIX 3.1 Electrical characteristics 3.1.11 D-A converter characteristics (Extended operating temperature version) Table 3.1.18 D-A CONVERTER CHARACTERISTICS (Extended operating temperature version) (VCC = 4.0 to 5.5 V, VSS = AVSS = 0 V, VREF = 4.0 V to VCC, Ta = -40 to 85 C, unless otherwise noted) Symbol -- -- tsu RO IVREF Parameter Test conditions Resolution Absolute accuracy Setting time Output resistor Reference power source input current (Note) Min. 1 Limits Typ. 2.5 Max. 8 1.0 3 4 3.2 Unit Bits % s k mA Note: Using one D-A converter, with the value in the D-A conversion register of the other D-A converter being "0016", and excluding currents flowing through the A-D resistance ladder. 3802 GROUP USER'S MANUAL 3-11 APPENDIX 3.1 Electrical characteristics 3.1.12 Timing requirements and Switching characteristics (Extended operating temperature version) Table 3.1.19 Timing requirements (Extended operating temperature version) (VCC = 4.0 to 5.5 V, VSS = 0 V, Ta = -40 to 85 C, unless otherwise noted) Symbol t w(RESET) t c(X IN) t wH(XIN) t wL(XIN) t c(CNTR) t wH(CNTR) t wH(INT) t wL(CNTR) t wL(INT) t c(S CLK1) t c(S CLK2) t wH(SCLK1) t wH(SCLK2) t wL(SCLK1) t wL(SCLK2) tsu(R X D-SCLK1) tsu(SIN2 -SCLK2) th(S CLK1-RX D) th(S CLK2-SIN2 ) Parameter Min. 2 125 50 50 200 80 80 80 80 800 1000 370 400 370 400 220 200 100 200 Reset input "L" pulse width External clock input cycle time External clock input "H" pulse width External clock input "L" pulse width CNTR0, CNTR1 input cycle time CNTR0, CNTR1 input "H" pulse width INT0 to INT4 input "H" pulse width CNTR0, CNTR1 input "L" pulse width INT0 to INT4 input "L" pulse width Serial I/O1 clock input cycle time (Note) Serial I/O2 clock input cycle time Serial I/O1 clock input "H" pulse width (Note) Serial I/O2 clock input "H" pulse width Serial I/O1 clock input "L" pulse width (Note) Serial I/O2 clock input "L" pulse width Serial I/O1 input set up time Serial I/O2 input set up time Serial I/O1 input hold time Serial I/O2 input hold time Limits Typ. Max. Unit s ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns Note: When f(XIN) = 8 MHz and bit 6 of address 001A16 is "1". Divide this value by four when f(XIN) = 8 MHz and bit 6 of address 001A16 is "0". Table 3.1.20 Switching characteristics (Extended operating temperature version) (VCC = 4.0 to 5.5 V, VSS = 0 V, Ta = -40 to 85 C, unless otherwise noted) Symbol twH(SCLK1 ) twH(SCLK2 ) twL(SCLK1 ) twL(SCLK2 ) td(SCLK1-TX D) td(SCLK2-S OUT2) tv(SCLK1-TXD) tv(SCLK2-S OUT2) tr(S CLK1) tf(SCLK1 ) tr(S CLK2) tf(SCLK2 ) tr(CMOS) tf(CMOS) Parameter Serial I/O1 clock output "H" pulse width Serial I/O2 clock output "H" pulse width Serial I/O1 clock output "L" pulse width Serial I/O2 clock output "L" pulse width Serial I/O1 output delay time (Note 1) Serial I/O2 output delay time (Note 2) Serial I/O1 output valid time (Note 1) Serial I/O2 output valid time (Note 2) Serial I/O1 clock output rising time Serial I/O1 clock output falling time Serial I/O2 clock output rising time Serial I/O2 clock output falling time CMOS output rising time (Note 3) CMOS output falling time (Note 3) Test conditions Min. Limits Typ. tc(SCLK1)/2-30 tc(SCLK2)/2-160 tc(SCLK1)/2-30 tc(SCLK2)/2-160 140 200 Fig. 3.1.1 -30 0 10 10 Note1: When the P45/T XD P-channel output disable bit of the UART control register (bit 4 of address 001B16 ) is "0". 2: When the P51/S OUT2 P-channel output disable bit of the serial I/O2 control register (bit 7 of address 001D 16) is "0". 3: XOUT pin excluded. 3-12 Max. 3802 GROUP USER'S MANUAL 30 30 30 40 30 30 Unit ns ns ns ns ns ns ns ns ns ns ns ns ns ns APPENDIX 3.1 Electrical characteristics Table 3.1.21 Timing requirements in memory expansion mode and microprocessor mode (Extended operating temperature version) (V CC = 4.0 to 5.5 V, VSS = 0 V, Ta = -40 to 85 C, unless otherwise noted) Limits Symbol Parameter Unit Min. Typ. Max. tsu(ONW-) Before ONW input set up time -20 ns th(-ONW) After ONW input hold time -20 ns tsu(DB-) Before data bus set up time 60 ns th(-DB) After data bus hold time 0 ns tsu(ONW-RD) Before RD ONW input set up time -20 ns tsu(ONW-WR) Before WR ONW input set up time th(RD-ONW) After RD ONW input hold time -20 ns th(WR-ONW) After WR ONW input hold time tsu(DB-RD) Before RD data bus set up time 65 ns th(RD-DB) After RD data bus hold time 0 ns Table 3.1.22 Switching characteristics in memory expansion mode and microprocessor mode (Extended operating temperature version) (VCC = 4.0 to 5.5 V, VSS = 0 V, Ta = -40 to 85 C, unless otherwise noted) Limits Symbol Parameter Test conditions Unit Typ. Min. Max. tc() ns clock cycle time 2tc(X IN) ns twH() clock "H" pulse width t c(XIN) -10 ns clock "L" pulse width t c(XIN) -10 twL() 40 ns After AD 15-AD 8 delay time td(-AH) 20 ns tv(-AH) After AD 15-AD 8 valid time 6 10 ns 45 After AD 7-AD 0 delay time 25 td(-AL) ns 10 tv(-AL) After AD 7-AD 0 valid time 6 ns 20 td(-SYNC) SYNC delay time ns 10 SYNC valid time tv(-SYNC) ns 20 10 RD and WR delay time td(-WR) ns 10 5 RD and WR valid time tv(-WR) 3 ns 70 20 After data bus delay time td(-DB) ns After data bus valid time tv(-DB) 15 Fig. 3.1.1 tc(X IN) -10 ns RD pulse width, WR pulse width twL(RD) RD pulse width, WR pulse width ns 3t c(XIN )-10 twL(WR) (when one wait is valid) td(AH-RD) td(AH-WR) After AD 15-AD 8 RD delay time After AD 15-AD 8 WR delay time tc(X IN) -35 tc(XIN )-15 ns td(AL-RD) td(AL-WR) tv(RD-AH) tv(WR-AH) After AD7 -AD0 RD delay time After AD7-AD 0 WR delay time t c(XIN)-40 tc(XIN)-20 ns 5 ns After RD AD15 -AD 8 valid time After WR AD 15-AD 8 valid time 0 tv(RD-AL) tv(WR-AL) td(WR-DB) tv(WR-DB) td(RESET-RESETOUT) tv(-RESET) After RD AD 7-AD 0 valid time ns 5 0 After WR AD 7-AD 0 valid time ns After WR data bus delay time 65 15 ns After WR data bus valid time 10 ns RESETOUT output delay time 200 ns RESETOUT output valid time (Note 1) 200 0 Note 1: The RESETOUT output goes "H" in sync with the rise of the clock that is anywhere between about 8 cycle and 13 cycles after the RESET input goes "H". Measurement output pin 100pF CMOS output Fig. 3.1.1 Circuit for measuring output switching characteristics 3802 GROUP USER'S MANUAL 3-13 APPENDIX 3.1 Electrical characteristics 3.1.13 Timing diagram Timing Diagram tC(CNTR) tWL(CNTR) tWH(CNTR) 0.8 VCC CNTR0, CNTR1 0.2 VCC tWL(INT) tWH(INT) 0.8 VCC INT0-INT4 0.2 VCC tW(RESET) RESET 0.8 VCC 0.2 VCC tC(XIN) tWL(XIN) tWH(XIN) 0.8 VCC XIN tf SCLK1 SCLK2 0.2 VCC tC(SCLK1), tC(SCLK2) tWL(SCLK1), tWL(SCLK2) tWH(SCLK1), tWH(SCLK2) tr 0.8 VCC 0.2 VCC tsu(RXD-SCLK1), tsu(SIN2-SCLK2) RXD SIN2 th(SCLK1-RXD), th(SCLK2- SIN2) 0.8 VCC 0.2 VCC td(SCLK1-TXD),td(SCLK2-SOUT2) TX D SOUT2 Fig. 3.1.2 Timing diagram (in single-chip mode) 3-14 3802 GROUP USER'S MANUAL tv(SCLK1-TXD), tv(SCLK2-SOUT2) APPENDIX 3.1 Electrical characteristics Timing Diagram in Memory Expansion Mode and Microprocessor Mode (1) tC() tWL() tWH() 0.5 VCC tv(-AH) td(-AH) AD15-AD8 0.5 VCC td(-AL) AD7-AD0 tv(-AL) 0.5 VCC tv(-SYNC) td(-SYNC) SYNC 0.5 VCC td(-WR) RD,WR tv(-WR) 0.5 VCC th(-ONW) tSU(ONW-) 0.8 VCC 0.2 VCC ONW tSU(DB-) th(-DB) 0.8 VCC 0.2 VCC DB0-DB7 (At CPU reading) td(-DB) DB0-DB7 (At CPU writing) tv(-DB) 0.5 VCC Timing Diagram in Microprocessor Mode RESET 0.8 VCC 0.2 VCC 0.5 VCC td(RESET- RESET OUT) RESETOUT tv(- RESET OUT) 0.5 VCC Fig. 3.1.3 Timing diagram (in memory expansion mode and microprocessor mode) (1) 3802 GROUP USER'S MANUAL 3-15 APPENDIX 3.1 Electrical characteristics Timing Diagram in Memory Expansion Mode and Microprocessor Mode (2) tWL(RD) tWL(WR) RD,WR 0.5 VCC td(AH-RD) td(AH-WR) AD15-AD8 tv(RD-AH) tv(WR-AH) 0.5 VCC td(AL-RD) td(AL-WR) AD7-AD0 tv(RD-AL) tv(WR-AL) 0.5 VCC th(RD-ONW) th(WR-ONW) tsu(ONW-RD) tsu(ONW-WR) ONW 0.8 VCC 0.2 VCC (At CPU reading) tWL(RD) RD 0.5 VCC tSU(DB-RD) DB0-DB7 (At CPU writing) tWL(WR) WR 0.5 VCC tv(WR-DB) td(WR-DB) DB0-DB7 0.5 VCC Fig. 3.1.4 Timing diagram (in memory expansion mode and microprocessor mode) (2) 3-16 th(RD-DB) 0.8 VCC 0.2 VCC 3802 GROUP USER'S MANUAL APPENDIX 3.2 Standard characteristics 3.2 Standard characteristics 3.2.1 Power source current characteristic examples Figures 3.2.1 and Figure 3.2.2 show power source current characteristic examples. [Measuring condition : 25 C, A-D conversion stopped] Rectangular waveform Power source current 8 (mA) Vcc = 5.5V, Ta = 25 c 7 6 Vcc = 4.0V, Ta = 25 c 5 4 3 2 1 0 0 1 2 3 4 5 6 7 8 Frequency f(XIN) (MHz) Fig. 3.2.1 Power source current characteristic example [Measuring condition : 25 C, A-D conversion stopped] Rectangular waveform Power source current (mA) 8 7 6 5 4 3 2 Vcc = 5.5V, Ta = 25 c 1 Vcc = 4.0V, Ta = 25 c 0 0 1 2 3 4 5 6 7 8 Frequency f(XIN) (MHz) Fig. 3.2.2 Power source current characteristic example (in wait mode) 3802 GROUP USER'S MANUAL 3-17 APPENDIX 3.2 Standard characteristics 3.2.2 Port standard characteristic examples Figures 3.2.3, Figure 3.2.4, Figure 3.2.5 and Figure 3.2.6 show port standard characteristic examples. [Port 60 IOH-V OH characteristic (P-channel drive)] (Pins with same characteristic : P0, P1, P2, P3, P4, P5, P6) IOH (mA) -50 V cc = 5.5V Ta = 90 c -45 -40 -35 Vcc = 5.0V Ta = 90 c -30 -25 -20 -15 Vcc = 3.0V Ta = 90 c -10 -5 0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 VOH (V) Fig. 3.2.3 Standard characteristic example of CMOS output port at P-channel drive (1) [Port 6 0 I OH-VOH characteristic (P-channel drive)] (Pins with same characteristic : P0, P1, P2, P3, P4, P5, P6) IOH (mA) Vcc = 5.5V Ta = 25 c -50 -45 -40 Vcc = 5.0V Ta = 25 c -35 -30 -25 -20 -15 Vcc = 3.0V Ta = 25 c -10 -5 0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 VO H (V) Fig. 3.2.4 Standard characteristic example of CMOS output port at P-channel drive (2) 3-18 3802 GROUP USER'S MANUAL APPENDIX 3.2 Standard characteristics [Port 6 0 IOL-V OL characteristic (N-channel drive)] (Pins with same characteristic : P0, P1, P2, P3, P4, P5, P6) IOL (mA) 50 V cc = 5.5V Ta = 90 c 45 40 V cc = 5.0V Ta = 90 c 35 30 25 V cc = 3.0V Ta = 90 c 20 15 10 5 0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 VOL (V) Fig. 3.2.5 Standard characteristic example of CMOS output port at N-channel drive (1) [Port 60 I OL-V OL characteristic (N-channel drive)] (Pins with same characteristic : P0, P1, P2, P3, P4, P5, P6) IOL (mA) 60 55 V cc = 5.5V Ta = 25c 50 V cc = 5.0V Ta = 25 c 45 40 35 30 25 V cc = 3.0V Ta = 25 c 20 15 10 5 0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 VOL (V) Fig. 3.2.6 Standard characteristic example of CMOS output port at N-channel drive (2) 3802 GROUP USER'S MANUAL 3-19 APPENDIX 3.2 Standard characteristics 3.2.3 A-D conversion standard characteristics Figure 3.2.7 shows the A-D conversion standard characteristics. The lower-side line on the graph indicates the absolute precision error. It represents the deviation from the ideal value. For example, the conversion of output code from 127 to 128 occurs ideally at the point of AN0 = 2550 mV, but the measured value is -5 mV. Accordingly, the measured point of conversion is represented as "2550 - 5 = 2545 mV." The upper-side line on the graph indicates the width of input voltages equivalent to output codes. For example, the measured width of the input voltage for output code 170 is 23 mV, so the differential nonlinear error is represented as "23 - 20 = 3 mV" (0.15 LSB). M38027E8SS A-D CONVERTER STEP WIDTH MEASUREMENT Measured when a power source voltage is stable in the single-chip mode Fig. 3.2.7 A-D conversion standard characteristics 3-20 3802 GROUP USER'S MANUAL APPENDIX 3.2 Standard characteristics 3.2.4 D-A conversion standard characteristics Figure 3.2.8 shows the D-A conversion standard characteristics. The lower-side line on the graph indicates the absolute precision error. In this case, it represents the difference between the ideal analog output value for an input code and the measured value. The upper-side line on the graph indicates the change width of output analog value to a one-bit change of input code. M38027E8SS D-A CONVERTER STEP WIDTH MEASUREMENT Measured when a power source voltage is stable in the single-chip mode Fig. 3.2.8 D-A conversion standard characteristics 3802 GROUP USER'S MANUAL 3-21 APPENDIX 3.3 Notes on use 3.3 Notes on use 3.3.1 Notes on interrupts (1) Sequence for switching an external interrupt detection edge When the external interrupt detection edge must be switched, make sure the following sequence. Reason The interrupt circuit recognizes the switching of the detection edge as the change of external input signals. This may cause an unnecessary interrupt. (2) Bit 7 of the interrupt control register 2 Fix the bit 7 of the interrupt control register 2 (Address:003F16 ) to "0". Clear an interrupt enable bit to "0" (interrupt disabled) Switch the detection edge Clear an interrupt request bit to "0" (no interrupt request issued) Set the interrupt enable bit to "1" ( interrupt enabled ) b7 0 b0 Interrupt control register 2 Address 003F16 Figure 3.3.1 shows the structure of the interrupt control register 2. Interrupt enable bits Not used Fix this bit to "0" Fig. 3.3.1 Structure of interrupt control register 2 3.3.2 Notes on the serial I/O1 (1) Stop of data transmission As for the serial I/O1 that can be used as either a clock synchronous or an asynchronous (UART) serial I/O, clear the transmit enable bit to "0" (transmit disabled), and clear the serial I/O enable bit to "0" (serial I/O1 disabled)in the following cases : when stopping data transmission during transmitting data in the clock synchronous serial I/O mode when stopping data transmission during transmitting data in the UART mode when stopping only data transmission during transmitting and receiving data in the UART mode Reason Since transmission is not stopped and the transmission circuit is not initialized even if the serial I/O1 enable bit is cleared to "0" (serial I/O1 disabled), the internal transmission is running (in this case, since pins TxD, RxD, S CLK1, ______ and SRDY1 function as I/O ports, the transmission data is not output). When data is written to the transmit buffer register in this state, the data is transferred to the transmit shift register and start to be shifted. When the serial I/O1 enable bit is set to "1" at this time, the data during internally shifting is output to the TxD pin and ti may cause an operation failure to a microcomputer. (2) Stop of data reception As for the serial I/O1 that can be used as either a clock synchronous or an asynchronous (UART) serial I/O, clear the receive enable bit to "0" (receive disabled), or clear the serial I/O enable bit to "0" (serial I/O disabled) in the following case : when stopping data reception during receiving data in the clock synchronous serial I/O mode Clear the receive enable bit to "0" (receive disabled) in the following cases : when stopping data reception during receiving data in the UART mode when stopping only data reception during transmitting and receiving data in the UART mode 3-22 3802 GROUP USER'S MANUAL APPENDIX 3.3 Notes on use (3) Stop of data transmission and reception in a clock synchronous serial I/O mode As for the serial I/O1 that can be used as either a clock synchronous or an asynchronous (UART) serial I/O, clear both the transmit enable bit and receive enable bit to "0" (transmit and receive disabled) at the same time in the following case: when stopping data transmission and reception during transmitting and receiving data in the clock synchronous mode (when data is transmitted and received in the clock synchronous serial I/O mode, any one of data transmission and reception cannot be stopped.) Reason In the clock synchronous serial I/O mode, the same clock is used for transmission and reception. If any one of transmission and reception is disabled, a bit error occurs because transmission and reception cannot be synchronized. In this mode, the clock circuit of the transmission circuit also operates for data reception. Accordingly, the transmission circuit does not stop by clearing only the transmit enable bit to "0" (transmit disabled). Also, the transmission circuit is not initialized by clearing the serial I/O1 enable bit to "0" (serial I/O1 disabled) (refer to (1)). _____ (4) The SRDY pin on a receiving side _____ When signals are output from the S RDY pin on the reception_____ side by using an external clock in the clock synchronous serial I/O mode, set all of the receive enable bit, the SRDY output enable bit, and the transmit enable bit to "1" (transmit enabled). (5) Stop of data reception in a clock synchronous serial I/O mode Set the serial I/O1 control register again after the transmission and the reception circuits are reset by clearing both the transmit enable bit and the receive enable bit to "0." Clear both the transmit enable bit (TE) and the receive enable bit (RE) to "0" Set the bits 0 to 3 and bit 6 of the serial I/O1 control register Set both the transmit enable bit (TE) and the receive enable bit (RE) to "1" Can be set with the LDM instruction at the same time (6) Control of data transmission using the transmit shift completion flag The transmit shift completion flag changes from "1" to "0" with a delay of 0.5 to 1.5 shift clocks. When checking the transmit shift completion flag after writing a data to the transmit buffer register for controlling a data transmission, note this delay. (7) Control of data transmission using an external clock When an external clock is used as the synchronous clock for data transmission, set the transmit enable bit to "1" at "H" level of the SCLK input signal. Also, write data to the transmit buffer register at "H" level of the SCLK input signal. 3.3.3 Notes on the A-D converter (1) Input of signals from signal source with high impedance to an analog input pin Make the signal source impedance for analog input low, or equip an analog input pin with an external capacitor of 0.01 F to 1 F. Further, maek sure to check the operation of application products on the user side. Reason The A-D converter builds in the capacitor for analog voltage comparison. Accordingly, when signals from signal source with high impedance are input to an analog input pin, a charge and discharge noise generates. This may cause the A-D conversion precision to be worse. 3802 GROUP USER'S MANUAL 3-23 APPENDIX 3.3 Notes on use (2) AVSS pin Connect a power source for the A-D converter, AVSS pin to the VSS line of the analog circuit. (3) A clock frequency during an A-D conversion The comparator consists of a capacity coupling, and a charge of the capacity will be lost if the clock frequency is too low. Thus, make sure the following during an A-D conversion. f(XIN) is 500 kHz or more . (When the ONW pin is "L", f(XIN) is 1 MHz or more.) Do not execute the STP instruction and WIT instruction. 3.3.4 Notes on the RESET pin When a rising time of the reset signal is long, connect a ceramic capacitor or others across the RESET pin and the VSS pin. And use a 1000 pF or more capacitor for high frequency use. When connecting the capacitor, make sure the following : Make the length of the wiring which is connected to a capacitor the shortest possible. Make sure to check the operation of application products on the user side. Reason If the several nanosecond or several ten nanosecond impulse noise enters the RESET pin, a microcomputer may malfunction. 3.3.5 Notes on input and output pins (1) Fix of a port input level in stand-by state Fix input levels of an input and an I/O port for getting effect of low-power dissipation in stand-by state, especially for the I/O ports of the N-channel open-drain. Pull-up (connect the port to VCC) or pull-down (connect the port to VSS) these ports through a resistor. When determining a resistance value, make sure the following: External circuit Variation of output levels during the ordinary operation * stand-by state : the stop mode by executing the STP instruction the wait mode by executing the WIT instruction Reason Even when setting as an output port with its direction register, in the following state : N-channel......when the content of the port latch is "1" the transistor becomes the OFF state, which causes the ports to be the high-impedance state. Make sure that the level becomes "undefined" depending on external circuits. Accordingly, the potential which is input to the input buffer in a microcomputer is unstable in the state that input levels of an input and an I/O port are "undefined." This may cause power source current. (2) Modify of the content of I/O port latch When the content of the port latch of an I/O port is modified with the bit managing instruction*, the value of the unspecified bit may be changed. Reason The bit managing instruction is read-modify-write instruction for reading and writing data by a byte unit. Accordingly, when this instruction is executed on one bit of the port latch of an I/O port, the following is executed to all bits of the port latch. As for a bit which is set as an input port : The pin state is read in the CPU, and is written to this bit after bit managing. As for a bit which is set as an output port : The bit value is read in the CPU, and is written to this bit after bit managing. 3-24 3802 GROUP USER'S MANUAL APPENDIX 3.3 Notes on use Make sure the following : Even when a port which is set as an output port is changed for an input port, its port latch holds the output data. Even when a bit of a port latch which is set as an input port is not speccified with a bit managing instruction, its value may be changed in case where content of the pin differs from a content of the port latch. * bit managing instructions : SEB and CLB instruction (3) The AVSS pin when not using the A-D converter When not using the A-D converter, handle a power source pin for the A-D converter, AVSS pin as follows : AVSS : Connect to the VSS pin Reason If the AV SS pin is opened, the microcomputer may malfunction by effect of noise or others. 3.3.6 Notes on memory expansion mode and microprocessor mode (1) Writing data to the port latch of port P3 In the memory expansion or the microprocessor mode, ports P3 0 and P31 can be used as the output port. Use the LDM or STA instruction for writing data to the port latch (address 000616) of port P3. When using a read-modify-write instruction (the SEB or the CLB instruction), allocate the read and the write enabled memory at address 000616. Reason In the memory expansion or microprocessor mode, address 0006 16 is allocated in the external area. Accordingly, Data is read from the external memory. Data is written to both the port latch of the port P3 and the external memory. Accordingly, when executing a read-modify-write instruction for address 0006 16, external memory data is read and modified, and the result is written in both the port latch of the port P3 and the external memory. If the read enabled memory is not allocated at address 000616, the read data is undefined. The undefined data is modified and written to the port latch of the port P3. The port latch data of port P3 becomes "undefined." (2) Overlap of an internal memory and an external memory When the internal and the external memory are overlapped in the memory expansion mode, the internal memory is valid in this overlapped area. When the CPU writes or reads to this area, the following is performed : When reading data Only the data in the internal memory is read into the CPU and the data in the external memory is not read into the CPU. However, as the read signal and address are still valid, the external memory data of the corresponding address is output to the external data bus. When writing data Data is written in both the internal and the external memory. 3802 GROUP USER'S MANUAL 3-25 APPENDIX 3.3 Notes on use 3.3.7 Notes on built-in PROM (1) Programming adapter To write or read data into/from the internal PROM, use the dedicated programming adapter and general-purpose PROM programmer as shown in Table 3.3.1. Table 3.3.1 Programming adapter Programming adapter Microcomputer M38027E8SS M38027E8SP (one-time blank) PCA4738S-64A M38027E8DSP (one-time blank) PCA4738L-64A M38027E8FS M38027E8FP (one-time blank) PCA4738F-64A M38027E8DFP (one-time blank) (2) Write and read In PROM mode, operation is the same as that of the M5M27C256AK and the M5M27C101, but programming conditions of PROM programmer are not set automatically because there are no internal device ID codes. Accurately set the following conditions for data write/read. Take care not to apply 21 V to Vpp pin (is also used as the CNVSS pin), or the product may be permanently damaged. Programming voltage : 12.5 V Setting of programming adapter switch : refer to table 3.3.2 Setting of PROM programmer address : refer to table 3.3.3 Table 3.3.2 Setting of programming adapter switch Programming adapter SW 1 SW 2 SW 3 CMOS CMOS OFF PCA4738S-64A PCA4738L-64A PCA4738F-64A 3-26 3802 GROUP USER'S MANUAL APPENDIX 3.3 Notes on use Table 3.3.3 Setting of PROM programmer address Microcomputer PROM programmer start address PROM programmer completion address Address : 408016 (Note 1) Address : 7FFD16 (Note 1) Address : 008016 (Note 2) Address : 7FFD16 (Note 2) M38022E4SS M38022E4SP M38022E4FS M38022E4FP M38022E4DSP M38022E4DFP M38027E8SS M38027E8SP M38027E8FS M38027E8FP M38027E8DSP M38027E8DFP Note1 : Addresses C08016 to FFFD16 in the internal PROM correspond to addresses 408016 to 7FFD 16 in the ROM programmer. 2 : Addresses 808016 to FFFD16 in the internal PROM correspond to addresses 0080 16 to 7FFD16 in the ROM programmer. (3) Erasing Contents of the windowed EPROM are erased through an ultraviolet light source of the wavelength 2537Angstrom . At least 15 W-sec/cm 2 are required to erase EPROM contents. 3802 GROUP USER'S MANUAL 3-27 APPENDIX 3.4 Countermeasures against noise 3.4 Countermeasures against noise Countermeasures against noise are described below. The following countermeasures are effective against noise in theory, however, it is necessary not only to take measures as follows but to evaluate before actual use. 3.4.1 Shortest wiring length The wiring on a printed circuit board can be as an antenna which feeds noise into the microcomputer. The shorter the total wiring length (by mm unit), the less the possibility of noise insertion into a microcomputer. (1) Wiring for the RESET pin Make the length of wiring which is connected to the RESET pin as short as possible. Especially, connect a capacitor across the RESET pin and the VSS pin with the shortest possible wiring (within 20mm). Reason The reset works to initialize a microcomputer. The width of a pulse input into the RESET pin is determined by the timing necessary conditions. If noise having a shorter pulse width than the standard is input to the RESET pin, the reset is released before the internal state of the microcomputer is completely initialized. This may cause a program runaway. Noise Reset circuit RESET VSS N.G. Reset circuit RESET VSS VSS VSS 3802 group O.K. 3802 group Fig. 3.4.1 Wiring for the RESET pin (2) Wiring for clock input/output pins Make the length of wiring which is connected to clock I/O pins as short as possible. Make the length of wiring (within 20mm) across the grounding lead of a capacitor which is connected to an oscillatorand the VSS pin of a microcomputer as short as possible. Separate the VSS pattern only for oscillation from other VSS patterns. Reason A microcomputer's operation synchronizes with a clock generated by the oscillator (circuit). If noise enters clock I/O pins, clock waveforms may be deformed. This may cause a malfunction or program runaway. Also, if a potential difference is caused by the noise between the V SS level of a microcomputer and the VSS level of an oscillator, the correct clock will not be input in the microcomputer. 3-28 3802 GROUP USER'S MANUAL APPENDIX 3.4 Countermeasures against noise An example of VSS patterns on the underside of a printed circuit board Noise Oscillator wiring pattern example XIN XOUT VSS N.G. XIN XOUT VSS XIN XOUT VSS O.K. Separate the VSS line for oscillation from other VSS lines Fig. 3.4.2 Wiring for clock I/O pins (3) Wiring for the VPP pin of the One Time PROM version and the EPROM version (In this microcomputer the VPP pin is also used as the CNVSS pin) Connect an approximately 5 k resistor to the V P P pin the shortest possible in series and also to the VSS pin. When not connecting the resistor, make the length of wiring between the VPP pin and the VSS pin the shortest possible. Approximately 5k CNVSS/VPP VSS Note:Even when a circuit which inclued an approximately 5 k resistor is used in the Mask ROM version, the maicrocomputer operates correctly. Reason The VPP pin of the One Time PROM and the EPROM version is the power source input pin for the built-in PROM. When programming in the built-in PROM, the impedance of the V PP pin is low to allow the electric current for wiring flow into the PROM. Because of this, noise can enter easily. If noise enters the VPP pin, abnormal in struction codes or data are read from the built-in PROM, which may cause a program runaway. 3802 group Make it the shortest possible Fig. 3.4.3 Wiring for the VPP pin of the One Time PROM and the EPROM version 3.4.2 Connection of a bypass capacitor across the Vss line and the Vcc line Connect an approximately 0.1 F bypass capacitor across the V SS line and the VCC line as follows: Connect a bypass capacitor across the VSS pin and the VCC pin at equal length . Connect a bypass capacitor across the VSS pin and the VCC pin with the shortest possible wiring. Use lines with a larger diameter than other signal lines for VSS line and VCC line. VCC Chip VCC VSS VSS Fig. 3.4.4 Bypass capacitor across the VSS line and the VCC line 3802 GROUP USER'S MANUAL 3-29 APPENDIX 3.4 Countermeasures against noise 3.4.3 Wiring to analog input pins Connect an approximately 100 to 1 k resistor to an analog signal line which is connected to an analog input pin in series. Besides, connect the resistor to the microcomputer as close as possible. Connect an approximately 1000 pF capacitor across the V SS pin and the analog input pin. Besides, connect the capacitor to the VSS pin as close as possible. Also, connect the capacitor across the analog input pin and the VSS pin at equal length. Reason Signals which is input in an analog input pin (such as an A-D converter input pin) are usually output signals from sensor. The sensor which detects a change of event is installed far from the printed circuit board with a microcomputer, the wiring to an analog input pin is longer necessarily. This long wiring functions as an antenna which feeds noise into the microcomputer, which causes noise to an analog input pin. 3.4.4. Consideration for oscillator Take care to prevent an oscillator that generates clocks for a microcomputer operation from being affected by other signals. Noise (Note) N.G. 3-30 O.K. VSS Note:The resistor is for dividing resistance with a thermister. Fig.3.4.5 Analog signal line and a resistor and a capacitor Microcomputer Mutual inductance M XIN XOUT VSS Large current GND Fig.3.4.6 Wiring for a large current signal line (2) Keeping an oscillator away from signal lines where potential levels change frequently Install an oscillator and a connecting pattern of an osillator away from signal lines where potential levels change frequently. Also, do not cross such signal lines over the clock lines or the signal lines which are sensitive to noise. Reason Signal lines where potential levels change frequently (such as the CNTR pin line) may affect other lines at signal rising or falling edge. If such lines cross over a clock line, clock waveforms may be deformed, which causes a microcomputer failure or a program runaway. Analog input pin Thermistor (1) Keeping an oscillator away from large current signal lines Install a microcomputer (and especially an oscillator) as far as possible from signal lines where a current larger than the tolerance of current value flows. Reason In the system using a microcomputer, there are signal lines for controlling motors, LEDs, and thermal heads or others. When a large current flows through those signal lines, strong noise occurs because of mutual inductance. Microcomputer Do not cross CNTR XIN XOUT VSS Fig.3.4.7 Wiring to a signal line where potential levels change frequently 3802 GROUP USER'S MANUAL APPENDIX 3.4 Countermeasures against noise 3.4.5 Setup for I/O ports Setup I/O ports using hardware and software as follows: <Hardware> Connect a resistor of 100 or more to an I/O port inseries. O.K. Noise Data bus Noise Direction register N.G. <Software> As for an input port, read data several times by a Port latch program for checking whether input levels are I/O port pins equal or not. As for an output port, since the output data may reverse because of noise, rewrite data to its port latch at fixed periods. Fig. 3.4.8 Setup for I/O ports Rewirte data to direction registers and pull-up control registers (only the product having it) at fixed periods. When a direction register is set for input port again at fixed periods, a several-nanosecond short pulse may be output from this port. If this is undesirable, connect a capacitor to this port to remove the noise pulse. 3.4.6 Providing of watchdog timer function by software If a microcomputer runs away because of noise or others, it can be detected by a software watchdog timer and the microcomputer can be reset to normal operation. This is equal to or more effective than program runaway detection by a hardware watchdog timer. The following shows an example of a watchdog timer provided by software. In the following example, to reset a microcomputer to normal operation, the main routine detects errors of the interrupt processing routine and the interrupt processing routine detects errors of the main routine. This example assumes that interrupt processing is repeated multiple times in a single main routine processing. Main routine Interrupt processing routine (SWDT) N (SWDT) (SWDT)--1 CLI Interrupt processing Main processing (SWDT) 0? N (SWDT) =N? 0 RTI Return =N Interrupt processing >0 Main routine <The main routine> routine errors errors Assigns a single byte of RAM to a software watchdog timer (SWDT) and writes the initial value N in the SWDT once at each execution of the main routine. Fig. 3.4.9 Watchdog timer by software The initial value N should satisfy the following condition: N+1 (Counts of interrupt processing executed in each main routine) As the main routine execution cycle may change because of an interrupt processing or others, the initial value N should have a margin. Watches the operation of the interrupt processing routine by comparing the SWDT contents with counts of interrupt processing count after the initial value N has been set. Detects that the interrupt processing routine has failed and determines to branch to the program initialization routine for recovery processing in the following cases: If the SWDT contents do not change after interrupt processing 3802 GROUP USER'S MANUAL 3-31 APPENDIX 3.4 Countermeasures against noise <The interrupt processing routine> Decrements the SWDT contents by 1 at each interrupt processing. Determins that the main routine operates normally when the SWDT contents are reset to the initial value N at almost fixed cycles (at the fixed interrupt processing count). Detects that the main routine has failed and determines to branch to the program initialization routine for recovery processing in the following case: When the contents of the SWDT reach 0 or less by continuative decrement without initializing to the initial value N. 3-32 3802 GROUP USER'S MANUAL APPENDIX 3.5 List of registers 3.5 List of registers Port Pi b7 b6 b5 b4 b3 b2 b1 b0 Port Pi (Pi) (i = 0, 1, 2, 3, 4, 5, 6) [Address : 0016, 0216, 0416, 0616, 0816, 0A16, 0C16] B Function Name 0 Port Pi0 In output mode Write Port latch Read In input mode Write : Port latch Read : Value of pins 1 Port Pi1 2 Port Pi2 At reset R W ? ? ? 3 Port Pi3 ? 4 Port Pi4 ? 5 Port Pi5 ? 6 Port Pi6 ? 7 Port Pi7 ? Fig. 3.5.1 Structure of Port Pi (i = 0, 1, 2, 3, 4, 5, 6) Port Pi direction register b7 b6 b5 b4 b3 b2 b1 b0 Port Pi direction register (PiD) (i = 0, 1, 2, 3, 4, 5, 6) [Address : 0116, 0316, 0516, 0716, 0916, 0B16, 0D16] B Function Name At reset R W 0 Port Pi direction register 0 : Port Pi0 input mode 1 : Port Pi0 output mode 0 1 0 : Port Pi1 input mode 1 : Port Pi1 output mode 0 : Port Pi2 input mode 1 : Port Pi2 output mode 0 : Port Pi3 input mode 1 : Port Pi3 output mode 0 : Port Pi4 input mode 1 : Port Pi4 output mode 0 0 0 0 0 : Port Pi5 input mode 1 : Port Pi5 output mode 0 : Port Pi6 input mode 1 : Port Pi6 output mode 0 : Port Pi7 input mode 1 : Port Pi7 output mode 0 0 0 2 3 4 5 6 7 Fig. 3.5.2 Structure of Port Pi direction register (i = 0, 1, 2, 3, 4, 5, 6) 3802 GROUP USER'S MANUAL 3-33 APPENDIX 3.5 List of registers Transmit/Receive buffer register b7 b6 b5 b4 b3 b2 b1 b0 Transmit/Receive buffer register (TB/RB) [Address : 1816] Function B 0 A transmission data is written to or a receive data is read out 1 from this buffer register. * At writing : a data is written to the Transmit buffer register. * At reading : a content of the Receive buffer register is read out. At reset R W ? ? 2 ? 3 ? 4 ? 5 ? 6 ? 7 ? Fig. 3.5.3 Structure of Transmit/Receive buffer register Serial I/O1 status register b7 b6 b5 b4 b3 b2 b1 b0 Serial I/O1 status register (SIO1STS) [Address : 1916] Name B Transmit buffer empty flag 0 (TBE) 1 Receive buffer full flag (RBF) 2 Transmit shift register shift completion flag (TSC) 3 Overrun error flag (OE) 4 Parity error flag (PE) 5 Framing error flag (FE) 6 Summing error flag (SE) Function 0 : Buffer full 1 : Buffer empty 0 : Buffer empty 1 : Buffer full 0 : Transmit shift in progress 1 : Transmit shift completed 0 R W 0 0 0 : No error 1 : Overrun error 0 : No error 1 : Parity error 0 0 0 : No error 1 : Framing error 0 : (OE) (PE) (FE) = 0 1 : (OE) (PE) (FE) = 1 0 0 1 7 Nothing is allocated for this bit. It is a write disabled bit. When this bit is read out, the value is "0." Fig. 3.5.4 Structure of Serial I/O1 status register 3-34 3802 GROUP USER'S MANUAL At reset APPENDIX 3.5 List of registers Serial I/O1 control register b7 b6 b5 b4 b3 b2 b1 b0 Serial I/O1 control register (SIO1CON) [Address : 1A16] B Name Function At reset 0 BRG count source selection bit (CSS) 0 1 0 2 3 4 5 6 7 0 : f(XIN) 1 : f(XIN)/4 Serial I/O1 synchronous clock At selecting clock synchronous serial I/O selection bit (SCS) 0 : BRG output divided by 4 1 : External clock input At selecting UART 0 : BRG output divided by 16 1 : External clock input divided by 16 SRDY1 output enable bit 0 : I/O port (P47) (SRDY) 1 : SRDY1 output pin 0 : Transmit buffer empty Transmit interrupt 1 : Transmit shift operating completion source selection bit (TIC) 0 : Transmit disabled Transmit enable bit (TE) 1 : Transmit enabled Receive enable bit (RE) 0 : Receive disabled 1 : Receive enabled 0 : UART Serial I/O1 mode 1 : Clock synchronous serial I/O selection bit (SIOM) Serial I/O1 enable bit (SIOE) 0 : Serial I/O1 disabled (P44-P47 : I/O port) 1 : Serial I/O1 enabled (P44-P47 : Serial I/O function pin) R W 0 0 0 0 0 0 Fig. 3.5.5 Structure of Serial I/O1 control register UART control register b7 b6 b5 b4 b3 b2 b1 b0 UART control register (UARTCON) [Address : 1B16] B 0 1 2 3 4 5 6 7 Name Character length selection bit (CHAS) Parity enable bit (PARE) Parity selection bit (PARS) Stop bit length selection bit (STPS) P45/TxD P-channel output disable bit (POFF) Function 0 : 8 bits 1 : 7 bits 0 : Parity checking disabled 1 : Parity checking enabled 0 : Even parity 1 : Odd parity 0 : 1 stop bit 1 : 2 stop bits In output mode 0 : CMOS output 1 : N-channel open-drain output Nothing is allocated for these bits. These are write disabled bits. When these bits are read out, the values are "1." At reset R W 0 0 0 0 0 1 1 1 Fig. 3.5.6 Structure of UART control register 3802 GROUP USER'S MANUAL 3-35 APPENDIX 3.5 List of registers Baud rate generator b7 b6 b5 b4 b3 b2 b1 b0 Baud rate generator (BRG) [Address : 1C16] Function B At reset 0 A count value of Baud rate generator is set. ? 1 ? 2 ? 3 ? 4 ? 5 ? 6 ? 7 ? R W Fig. 3.5.7 Structure of Baud rate generator Serial I/O2 control register b7 b6 b5 b4 b3 b2 b1 b0 Serial I/O2 control register (SIO2CON) [Address : 1D16] Name B 0 Internal synchronous clock selection bits 1 2 Function b2 b1 b0 0 0 0 0 1 1 0 0 1 1 1 1 0 : f(XIN)/8 1 : f(XIN)/16 0 : f(XIN)/32 1 : f(XIN)/64 0 : f(XIN)/128 1 : f(XIN)/256 0 0 0 3 Serial I/O2 port selection bit 0 4 0 5 6 7 0 : I/O port (P51, P52) 1 : SOUT2, SCLK2 output pin 0 : I/O port (P53) SRDY2 output enable bit 1 : SRDY2 output pin Transfer direction selection bit 0 : LSB first 1 : MSB first Serial I/O2 synchronous clock 0 : External clock 1 : Internal clock selection bit In output mode P51/SOUT2 P-channel 0 : CMOS output output disable bit 1 : N-channel open-drain output Fig. 3.5.8 Structure of Serial I/O2 control register 3-36 At reset 3802 GROUP USER'S MANUAL 0 0 0 R W APPENDIX 3.5 List of registers Serial I/O2 register b7 b6 b5 b4 b3 b2 b1 b0 Serial I/O2 register (SIO2) [Address : 1F16] Function B At reset 0 A shift register for serial transmission and reception. ? At transmitting : Set a transmission data. At receiving : Store a reception data. 1 ? 2 ? 3 ? 4 ? 5 ? 6 ? 7 ? R W Fig. 3.5.9 Structure of Serial I/O2 register Prescaler 12, Prescaler X, Prescaler Y b7 b6 b5 b4 b3 b2 b1 b0 Prescaler 12 (PRE12), Prescaler X (PREX), Prescaler Y (PREY) [Address : 2016, 2416, 2616] B 0 1 2 Function The count value of each prescaler is set. The value set in this register is written to both the prescaler and the prescaler latch at the same time. When the prescaler is read out, the value (count value) of the prescaler is read out. At reset R W 1 1 1 3 1 4 1 5 1 6 1 7 1 Fig. 3.5.10 Structure of Prescaler 12, Prescaler X, Prescaler Y 3802 GROUP USER'S MANUAL 3-37 APPENDIX 3.5 List of registers Timer 1 b7 b6 b5 b4 b3 b2 b1 b0 Timer 1 (T1) [Address : 2116] B 0 1 2 Function At reset The count value of the Timer 1 is set. The value set in this register is written to both the Timer 1 and the Timer 1 latch at the same time. When the Timer 1 is read out, the value (count value) of the Timer 1 is read out. 1 R W 0 0 3 0 4 0 5 0 6 0 7 0 Fig. 3.5.11 Structure of Timer 1 Timer 2, Timer X, Timer Y b7 b6 b5 b4 b3 b2 b1 b0 Timer 2 (T2), Timer X (TX), Timer Y (TY) [Address : 2216, 2516, 2716] B 0 Function 1 2 The count value of each timer is set. The value set in this register is written to both the Timer and the Timer latch at the same time. When the Timer is read out, the value (count value) of the Timer is read out. 1 1 1 3 1 4 1 5 1 6 1 7 1 Fig. 3.5.12 Structure of Timer 2, Timer X, Timer Y 3-38 At reset 3802 GROUP USER'S MANUAL R W APPENDIX 3.5 List of registers A AA Timer XY mode register b7 b6 b5 b4 b3 b2 b1 b0 Timer XY mode register (TM) [Address : 2316] Name B 0 Timer X operating mode 1 2 CNTR0 active edge switch bit 3 Timer X count stop bit 4 Timer Y operating mode 5 6 CNTR1 active edge switch bit 7 Timer Y count stop bit Function b1 b0 0 0 : Timer mode 0 1 : Pulse output mode 1 0 : Event counter mode 1 1 : Pulse width measurement mode It depends on the operating mode of the Timer X (refer to Table 3.5.1). 0 : Count start 1 : Count stop b5 b4 0 0 : Timer mode 0 1 : Pulse output mode 1 0 : Event counter mode 1 1 : Pulse width measurement mode It depends on the operating mode of the Timer Y (refer to Table 3.5.1 ). 0 : Count start 1 : Count stop At reset R W 0 0 0 0 0 0 0 0 Fig. 3.5.13 Structure of Timer XY mode register Table. 3.5.1 Function of CNTR 0/CNTR 1 edge switch bit Operating mode of Timer X/Timer Y Timer mode Function of CNTR 0/CNTR 1 edge switch bit (bits 2 and 6) "0" "1" Pulse output mode "0" "1" Event counter mode "0" "1" Pulse width measurement mode "0" "1" * Generation of CNTR0 /CNTR1 interrupt request : Falling (No effect on timer count) * Generation of CNTR 0/CNTR 1 interrupt request : Rising (No effect on timer count) * Start of pulse output : From "H" level * Generation of CNTR0 /CNTR1 interrupt request : Falling * Start of pulse output : From "L" level * Generation of CNTR 0/CNTR 1 interrupt request : Rising * Timer X/Timer Y : Count of rising edge * Generation of CNTR0 /CNTR1 interrupt request : Falling * Timer X/Timer Y : Count of falling edge * Generation of CNTR0/CNTR1 interrupt request : Rising * Timer X/Timer Y : Measurement of "H" level width * Generation of CNTR0 /CNTR1 interrupt request : Falling * Timer X/Timer Y : Measurement of "L" level width * Generation of CNTR 0/CNTR 1 interrupt request : Rising 3802 GROUP USER'S MANUAL edge edge edge edge edge edge edge edge 3-39 APPENDIX 3.5 List of registers PWM control register b7 b6 b5 b4 b3 b2 b1 b0 PWM control register (PWMCON) [Address:2B16] Name B 0 PWM function enable bit 1 Count source selection bit Function 0 : PWM disabled 1 : PWM enabled 0 : f(XIN) 1 : f(XIN)/2 At reset R W 0 0 2 Nothing is arranged for these bits. These are write disabled bits. 0 3 0 4 0 5 0 6 0 7 0 When these bits are read out, the contents are "0". Fig. 3.5.14 Structure of PWM control register PWM prescaler b7 b6 b5 b4 b3 b2 b1 b0 PWM prescaler (PREPWM) [Address : 2C16] Function At reset cycle is set. The values set in this register is written to both the PWM prescaler pre-latch and the PWM prescaler latch at the same time. When data is written during outputting PWM, the pulses corresponding to the changed contents are output starting with the next cycle. When this register is read out, the content of the PWM prescaler latch is read out. ? B 0 1 2 3 PWM ? ? 4 ? 5 ? 6 ? 7 ? Fig. 3.5.15 Structure of PWM prescaler 3-40 ? 3802 GROUP USER'S MANUAL R W APPENDIX 3.5 List of registers PWM register b7 b6 b5 b4 b3 b2 b1 b0 PWM register (PWM) [Address : 2D16] b 0 1 2 3 Function At reset "H" level output period of PWM is set. The values set in this register is written both the PWM register pre-latch and the PWM register latch at the same time. When data is written during outputting PWM, the pulses corresponding to the changed contents are output starting with the next cycle. When this register is read out, the content of the PWM register latch is read out. ? R W ? ? ? 4 ? 5 ? 6 ? 7 ? Fig. 3.5.16 Structure of PWM register 3802 GROUP USER'S MANUAL 3-41 APPENDIX 3.5 List of registers AD/DA control register b7 b6 b5 b4 b3 b2 b1 b0 AD/DA control register (ADCON) [Address : 3416] B Function Name b2 b1 b0 0 Analog input pin selection bits 0 0 0 : P60/AN0 1 2 3 4 5 6 0 0 1 : P61/AN1 0 1 0 : P62/AN2 0 1 1 : P63/AN3 1 0 0 : P64/AN4 1 0 1 : P65/AN5 1 1 0 : P66/AN6 1 1 1 : P67/AN7 AD conversion completion bit 0 : Conversion in progress 1 : Conversion completed Nothing is allocated for these bits. These are write disabled bits. When these bits are read out, the values are "0." 0 : DA1 output disable DA1 output enable bit 1 : DA1 output enable 7 DA2 output enable bit 0 : DA2 output disabled 1 : DA2 output enabled At reset R W 0 0 0 1 0 0 0 0 Fig. 3.5.17 Structure of AD/DA control register A-D conversion register b7 b6 b5 b4 b3 b2 b1 b0 A-D conversion register (AD) [Address : 3516] B Function 0 The read-only register which A-D conversion results are stored. 1 2 3 4 5 6 7 Fig. 3.5.18 Structure of A-D conversion register 3-42 3802 GROUP USER'S MANUAL At reset ? ? ? ? ? ? ? ? R W APPENDIX 3.5 List of registers D-A1 conversion register, D-A2 conversion register b7 b6 b5 b4 b3 b2 b1 b0 D-A1 conversion register (DA1), D-A2 conversion register (DA2) [Address : 3616, 3716] B 0 Function At reset An output value of each D-A converter is set. R W 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 Fig. 3.5.19 Structure of D-A 1 conversion, D-A 2 conversion register Interrupt edge selection register b7 b6 b5 b4 b3 b2 b1 b0 Interrupt edge selection register (INTEDGE) [Address : 3A16] Name B INT 0 interrupt edge 0 selection bit 1 INT1 interrupt edge 2 3 4 5 6 7 Function 0 : Falling edge active 1 : Rising edge active 0 : Falling edge active 1 : Rising edge active selection bit Nothing is allocated for this bit. This is a write disabled bit.When this bit is read out, the value is "0." INT2 interrupt edge 0 : Falling edge active selection bit 1 : Rising edge active 0 : Falling edge active INT3 interrupt edge 1 : Rising edge active selection bit INT4 interrupt edge 0 : Falling edge active selection bit 1 : Rising edge active Nothing is allocated for these bits. These are write disabled bits. When these bits are read out, the values are "0." At reset R W 0 0 0 0 0 0 0 0 Fig. 3.5.20 Structure of Interrupt edge selection register 3802 GROUP USER'S MANUAL 3-43 APPENDIX 3.5 List of registers CPU mode register b7 b6 b5 b4 b3 b2 b1 b0 CPU mode register (CPUM) [Adress : 3B16] B Name 0 Processor mode bits 1 2 Stack page selection bit Function 00 : Single-chip mode 01 : Memory expansion mode 10 : Microprocessor mode 11 : Not available 0 : 0 page 1 : 1 page 3 Nothing is allocated for these bits. These are write disabled bits. 4 When these bits are read out, the values are "0." 5 6 7 An initial value of bit 1 is determined by a level of the CNVSS pin. Fig. 3.5.21 Structure of CPU mode register 3-44 3802 GROUP USER'S MANUAL At reset R W 0 0 0 0 0 0 0 APPENDIX 3.5 List of registers Interrupt request register 1 b7 b6 b5 b4 b3 b2 b1 b0 Interrupt request reigster 1 (IREQ1) [Address : 3C16] Function Name B At reset R W 0 INT0 interrupt request bit 0 : No interrupt request 1 : Interrupt request 0 1 INT1 interrupt request bit 0 : No interrupt request 1 : Interrupt request 0 : No interrupt request 1 : Interrupt request 0 0 0 : No interrupt request 1 : Interrupt request 0 : No interrupt request 1 : Interrupt request 0 0 0 : No interrupt request 1 : Interrupt request 0 : No interrupt request 1 : Interrupt request 0 0 0 : No interrupt request 1 : Interrupt request 0 2 Serial I/O1 receive interrupt request bit 3 Serial I/O1 transmit interrupt request bit 4 Timer X interrupt request bit 5 Timer Y interrupt request bit 6 Timer 1 interrupt request bit 7 Timer 2 interrupt request bit "0" is set by software, but not "1." Fig. 3.5.22 Structure of Interrupt request register 1 Interrupt request register 2 b7 b6 b5 b4 b3 b2 b1 b0 Interrupt request reigster 2 (IREQ2) [Address : 3D16] Name B 0 CNTR0 interrupt request bit 1 CNTR1 interrupt request bit 2 Serial I/O2 interrupt request bit 3 INT2 interrupt request bit 4 INT3 interrupt request bit 5 INT4 interrupt request bit 6 AD conversion interrupt request bit Function At reset R W 0 : No interrupt request 1 : Interrupt request 0 : No interrupt request 1 : Interrupt request 0 : No interrupt request 1 : Interrupt request 0 0 0 0 : No interrupt request 1 : Interrupt request 0 : No interrupt request 1 : Interrupt request 0 : No interrupt request 1 : Interrupt request 0 : No interrupt request 1 : Interrupt request 0 0 0 0 0 7 Nothing is allocated for this bit. This is a write disabled bit. When this bit is read out, the value is "0." "0" is set by software, but not "1." Fig. 3.5.23 Structure of Interrupt request register 2 3802 GROUP USER'S MANUAL 3-45 APPENDIX 3.5 List of registers Interrupt control register 1 b7 b6 b5 b4 b3 b2 b1 b0 Interrupt control register 1 (ICON1) [Address : 3E16] Function Name B 0 INT0 interrupt enable bit 1 INT1 interrupt enable bit 2 Serial I/O1 receive interrupt enable bit Serial I/O1 transmit interrupt 3 enable bit 4 Timer X interrupt enable bit 5 Timer Y interrupt enable bit 6 Timer 1 interrupt enable bit 7 Timer 2 interrupt enable bit At reset 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled R W 0 0 0 0 0 0 Fig. 3.5.24 Structure of Interrupt control register 1 Interrupt control register 2 b7 b6 b5 b4 b3 b2 b1 b0 0 Interrupt control reigster 2 (ICON2) [Address : 3F16] Name B 0 CNTR0 interrupt enable bit Function 0 4 INT3 interrupt enable bit 0 : Interrupt disabled 1 : Interrupt enabled 0 5 INT4 interrupt enable bit 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 6 AD conversion interrupt enable bit 7 Fix this bit to "0." Fig. 3.5.25 Structure of Interrupt control register 2 3-46 At reset 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled CNTR 1 interrupt enable bit 1 1 : Interrupt enabled 0 2 Serial I/O2 interrupt enable bit : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 3 INT2 interrupt enable bit 1 : Interrupt enabled 3802 GROUP USER'S MANUAL 0 0 0 0 0 R W APPENDIX 3.6 Mask ROM ordering method 3.6 Mask ROM ordering method 3802 GROUP USER'S MANUAL 3-47 APPENDIX 3.6 Mask ROM ordering method 3-48 3802 GROUP USER'S MANUAL APPENDIX 3.6 Mask ROM ordering method 3802 GROUP USER'S MANUAL 3-49 APPENDIX 3.6 Mask ROM ordering method 3-50 3802 GROUP USER'S MANUAL APPENDIX 3.6 Mask ROM ordering method 3802 GROUP USER'S MANUAL 3-51 APPENDIX 3.6 Mask ROM ordering method 3-52 3802 GROUP USER'S MANUAL APPENDIX 3.6 Mask ROM ordering method 3802 GROUP USER'S MANUAL 3-53 APPENDIX 3.6 Mask ROM ordering method 3-54 3802 GROUP USER'S MANUAL APPENDIX 3.6 Mask ROM ordering method 3802 GROUP USER'S MANUAL 3-55 APPENDIX 3.6 Mask ROM ordering method 3-56 3802 GROUP USER'S MANUAL APPENDIX 3.6 Mask ROM ordering method 3802 GROUP USER'S MANUAL 3-57 APPENDIX 3.6 Mask ROM ordering method 3-58 3802 GROUP USER'S MANUAL APPENDIX 3.6 Mask ROM ordering method 3802 GROUP USER'S MANUAL 3-59 APPENDIX 3.6 Mask ROM ordering method 3-60 3802 GROUP USER'S MANUAL APPENDIX 3.7 Mark specification form 3.7 Mark specification form 3802 GROUP USER'S MANUAL 3-61 APPENDIX 3.7 Mark specification form 3-62 3802 GROUP USER'S MANUAL APPENDIX 3.8 Package outline 3.8 Package outline 3802 GROUP USER'S MANUAL 3-63 APPENDIX 3.8 Package outline 3-64 3802 GROUP USER'S MANUAL APPENDIX 3.4 List of instruction codes 3.9 List of instruction codes D 7 - D4 D3 - D 0 0000 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 1111 Hexadecimal notation 0 1 2 3 4 5 6 7 8 9 A B C D E F ORA ABS ASL ABS SEB 0, ZP 0000 0 BRK JSR ORA IND, X ZP, IND BBS 0, A -- ORA ZP ASL ZP BBS 0, ZP PHP ORA IMM ASL A SEB 0, A -- 0001 1 BPL ORA IND, Y CLT BBC 0, A -- ORA ZP, X ASL ZP, X BBC 0, ZP CLC ORA ABS, Y DEC A CLB 0, A -- 0010 2 JSR ABS AND IND, X JSR SP BBS 1, A BIT ZP AND ZP ROL ZP BBS 1, ZP PLP AND IMM ROL A SEB 1, A BIT ABS 0011 3 BMI AND IND, Y SET BBC 1, A -- AND ZP, X ROL ZP, X BBC 1, ZP SEC AND ABS, Y INC A CLB 1, A LDM ZP 0100 4 RTI EOR IND, X STP BBS 2, A COM ZP EOR ZP LSR ZP BBS 2, ZP PHA EOR IMM LSR A SEB 2, A JMP ABS 0101 5 BVC EOR IND, Y -- BBC 2, A -- EOR ZP, X LSR ZP, X BBC 2, ZP CLI EOR ABS, Y -- CLB 2, A -- 0110 6 RTS ADC MUL IND, X ZP, X BBS 3, A TST ZP ADC ZP ROR ZP BBS 3, ZP PLA ADC IMM ROR A SEB 3, A JMP IND 0111 7 BVS ADC IND, Y -- BBC 3, A -- ADC ZP, X ROR ZP, X BBC 3, ZP SEI ADC ABS, Y -- CLB 3, A -- 1000 8 BRA STA IND, X RRF ZP BBS 4, A STY ZP STA ZP STX ZP BBS 4, ZP DEY -- TXA SEB 4, A STY ABS STA ABS STX ABS SEB 4, ZP 1001 9 BCC STA IND, Y -- BBC 4, A STY ZP, X STA ZP, X STX ZP, Y BBC 4, ZP TYA STA ABS, Y TXS CLB 4, A -- STA ABS, X -- CLB 4, ZP 1010 A LDY IMM LDA IND, X LDX IMM BBS 5, A LDY ZP LDA ZP LDX ZP BBS 5, ZP TAY LDA IMM TAX SEB 5, A LDY ABS LDA ABS LDX ABS SEB 5, ZP 1011 B BCS LDA JMP IND, Y ZP, IND BBC 5, A LDY ZP, X LDA ZP, X LDX ZP, Y BBC 5, ZP CLV LDA ABS, Y TSX CLB 5, A 1100 C CPY IMM CMP IND, X WIT BBS 6, A CPY ZP CMP ZP DEC ZP BBS 6, ZP INY CMP IMM DEX SEB 6, A CPY ABS 1101 D BNE CMP IND, Y -- BBC 6, A -- CMP ZP, X DEC ZP, X BBC 6, ZP CLD CMP ABS, Y -- CLB 6, A -- 1110 E CPX IMM DIV SBC IND, X ZP, X BBS 7, A CPX ZP SBC ZP INC ZP BBS 7, ZP INX SBC IMM NOP SEB 7, A CPX ABS 1111 F BEQ SBC IND, Y BBC 7, A -- SBC ZP, X INC ZP, X BBC 7, ZP SED SBC ABS, Y -- CLB 7, A -- -- CLB ASL ORA ABS, X ABS, X 0, ZP AND ABS ROL ABS SEB 1, ZP CLB ROL AND ABS, X ABS, X 1, ZP EOR ABS LSR ABS SEB 2, ZP CLB LSR EOR ABS, X ABS, X 2, ZP ADC ABS ROR ABS SEB 3, ZP CLB ROR ADC ABS, X ABS, X 3, ZP CLB LDX LDA LDY ABS, X ABS, X ABS, Y 5, ZP CMP ABS DEC ABS SEB 6, ZP CLB DEC CMP ABS, X ABS, X 6, ZP SBC ABS INC ABS SEB 7, ZP CLB INC SBC ABS, X ABS, X 7, ZP 3-byte instruction 2-byte instruction 1-byte instruction 3802 GROUP USER'S MANUAL 3-65 APPENDIX 3.10 Machine instructions 3.10 Machine instructions Addressing mode Symbol Function Details IMP OP n ADC (Note 1) (Note 5) When T = 0 AA+M+C When T = 1 M(X) M(X) + M + C AND (Note 1) When TV= 0 AA M When T = 1 V M(X) M(X) M ASL C 7 0 0 IMM # OP n A # OP n BIT, A # OP n ZP # OP n BIT, ZP # OP n Adds the carry, accumulator and memory contents. The results are entered into the accumulator. Adds the contents of the memory in the address indicated by index register X, the contents of the memory specified by the addressing mode and the carry. The results are entered into the memory at the address indicated by index register X. 69 2 2 65 3 2 "AND's" the accumulator and memory contents. The results are entered into the accumulator. "AND's" the contents of the memory of the address indicated by index register X and the contents of the memory specified by the addressing mode. The results are entered into the memory at the address indicated by index register X. 29 2 2 25 3 2 06 5 2 0A 2 Shifts the contents of accumulator or contents of memory one bit to the left. The low order bit of the accumulator or memory is cleared and the high order bit is shifted into the carry flag. 1 # BBC (Note 4) Ab or Mb = 0? Branches when the contents of the bit specified in the accumulator or memory is "0". 13 + 4 2i 2 17 + 5 2i 3 BBS (Note 4) Ab or Mb = 1? Branches when the contents of the bit specified in the accumulator or memory is "1". 03 + 4 2i 2 07 + 5 2i 3 BCC (Note 4) C = 0? Branches when the contents of carry flag is "0". BCS (Note 4) C = 1? Branches when the contents of carry flag is "1". BEQ (Note 4) Z = 1? Branches when the contents of zero flag is "1". BIT A BMI (Note 4) N = 1? Branches when the contents of negative flag is "1". BNE (Note 4) Z = 0? Branches when the contents of zero flag is "0". BPL (Note 4) N = 0? Branches when the contents of negative flag is "0". BRA PC PC offset Jumps to address specified by adding offset to the program counter. BRK B1 M(S) PCH SS-1 M(S) PCL SS-1 M(S) PS SS-1 PCL ADL PCH ADH Executes a software interrupt. 3-66 V M 24 3 "AND's" the contents of accumulator and memory. The results are not entered anywhere. 00 7 3802 GROUP USER'S MANUAL 1 2 APPENDIX 3.10 Machine instructions Addressing mode ZP, X ZP, Y OP n # OP n 75 4 ABS ABS, X ABS, Y IND # OP n # OP n # OP n # OP n 2 6D 4 3 7D 5 3 79 5 35 4 2 2D 4 3 3D 5 3 39 5 16 6 2 0E 6 3 1E 7 3 2C 4 Processor status register ZP, IND # OP n IND, X IND, Y REL SP # OP n 7 5 4 3 2 1 0 N V T B D I Z C # OP n # OP n # OP n 3 61 6 2 71 6 2 N V * * * * Z C 3 21 6 2 31 6 2 N * * * * * Z * N * * * * * Z C * * * * * * * * * * * * * * * * 90 2 2 * * * * * * * * B0 2 2 * * * * * * * * F0 2 2 * * * * * * * * M7 M6 * * * * Z * 3 3802 GROUP USER'S MANUAL # 6 30 2 2 * * * * * * * * D0 2 2 * * * * * * * * 10 2 2 * * * * * * * * 80 4 2 * * * * * * * * * * * 1 * 1 * * 3-67 APPENDIX 3.10 Machine instructions Addressing mode Symbol Function Details IMP OP n IMM # OP n BVC (Note 4) V = 0? Branches when the contents of overflow flag is "0". BVS (Note 4) V = 1? Branches when the contents of overflow flag is "1". CLB Ab or Mb 0 Clears the contents of the bit specified in the accumulator or memory to "0". CLC C0 Clears the contents of the carry flag to "0". 18 2 1 CLD D0 Clears the contents of decimal mode flag to "0". D8 2 1 CLI I0 Clears the contents of interrupt disable flag to "0". 58 2 1 CLT T0 Clears the contents of index X mode flag to "0". 12 2 1 CLV V0 Clears the contents of overflow flag to "0". B8 2 1 CMP (Note 3) When T = 0 A-M When T = 1 M(X) - M Compares the contents of accumulator and memory. Compares the contents of the memory specified by the addressing mode with the contents of the address indicated by index register X. COM MM Forms a one's complement of the contents of memory, and stores it into memory. CPX X-M Compares the contents of index register X and memory. E0 2 CPY Y-M Compares the contents of index register Y and memory. C0 2 DEC A A - 1 or MM-1 Decrements the contents of the accumulator or memory by 1. DEX XX-1 Decrements the contents of index register X CA 2 by 1. 1 DEY YY-1 Decrements the contents of index register Y by 1. 88 2 1 DIV A (M(zz + X + 1), M(zz + X)) / A M(S) 1's complememt of Remainder SS-1 Divides the 16-bit data that is the contents of M (zz + x + 1) for high byte and the contents of M (zz + x) for low byte by the accumulator. Stores the quotient in the accumulator and the 1's complement of the remainder on the stack. EOR (Note 1) When T = 0 -M AAV "Exclusive-ORs" the contents of accumulator and memory. The results are stored in the accumulator. "Exclusive-ORs" the contents of the memory specified by the addressing mode and the contents of the memory at the address indicated by index register X. The results are stored into the memory at the address indicated by index register X. When T = 1 -M M(X) M(X) V Connects oscillator output to the XOUT pin. FST INC A A + 1 or MM+1 Increments the contents of accumulator or memory by 1. INX XX+1 Increments the contents of index register X by 1. INY YY+1 Increments the contents of index register Y by 1. 3-68 A # OP n BIT, A # OP n 1B 2 + 2i C9 2 E2 2 # OP n # 1F 5 + 2i 2 1 2 44 5 2 2 E4 3 2 2 C4 3 2 C6 5 2 45 3 2 E6 5 2 1 2 1 3A 2 E8 2 1 C8 2 1 3802 GROUP USER'S MANUAL # OP n BIT, ZP C5 3 2 1A 2 49 2 ZP 1 APPENDIX 3.10 Machine instructions Addressing mode ZP, X OP n D5 4 D6 6 ZP, Y # OP n 2 2 ABS # OP n CD 4 ABS, X # OP n 3 DD 5 ABS, Y # OP n 3 D9 5 IND # OP n 3 Processor status register ZP, IND # OP n IND, X # OP n C1 6 IND, Y # OP n 2 D1 6 # OP n 2 F6 6 2 2 SP # OP n 7 # 6 5 4 3 2 1 0 N V T B D I Z C 50 2 2 * * * * * * * * 70 2 2 * * * * * * * * * * * * * * * * * * * * * * * 0 * * * * 0 * * * * * * * * 0 * * * * 0 * * * * * * 0 * * * * * * N * * * * * Z C N * * * * * Z * EC 4 3 N * * * * * Z C CC 4 3 N * * * * * Z C CE 6 3 DE 7 N * * * * * Z * N * * * * * Z * N * * * * * Z * * * * * * * * * N * * * * * Z * * * * * * * * * N * * * * * Z * N * * * * * Z * N * * * * * Z * 3 E2 16 2 55 4 REL 4D 4 EE 6 3 5D 5 3 FE 7 3 59 5 3 41 6 2 51 6 3 3802 GROUP USER'S MANUAL 2 3-69 APPENDIX 3.10 Machine instructions Addressing mode Symbol Function Details IMP OP n IMM # OP n JMP If addressing mode is ABS PCL ADL PCH ADH If addressing mode is IND PCL M (AD H, ADL) PCH M (ADH, AD L + 1) If addressing mode is ZP, IND PCL M(00, AD L) PCH M(00, AD L + 1) Jumps to the specified address. JSR M(S) PCH SS-1 M(S) PCL SS-1 After executing the above, if addressing mode is ABS, PCL ADL PCH ADH if addressing mode is SP, PCL ADL PCH FF If addressing mode is ZP, IND, PCL M(00, AD L) PCH M(00, AD L + 1) After storing contents of program counter in stack, and jumps to the specified address. LDA (Note 2) When T = 0 AM When T = 1 M(X) M Load accumulator with contents of memory. LDM M nn Load memory with immediate value. LDX XM Load index register X with contents of memory. A2 2 LDY YM Load index register Y with contents of memory. A0 2 LSR 7 0 MUL (Note 5) M(S) * A A M(zz + X) SS-1 Multiplies the accumulator with the contents of memory specified by the zero page X addressing mode and stores the high byte of the result on the stack and the low byte in the accumulator. NOP PC PC + 1 No operation. ORA (Note 1) When T = 0 AAVM "Logical OR's" the contents of memory and accumulator. The result is stored in the accumulator. "Logical OR's" the contents of memory indicated by index register X and contents of memory specified by the addressing mode. The result is stored in the memory specified by index register X. 0 C When T = 1 M(X) M(X) V M 3-70 A9 2 A # OP n BIT, A # OP n ZP # OP n BIT, ZP # OP n A5 3 2 3C 4 3 2 A6 3 2 2 A4 3 2 46 5 2 05 3 2 2 Load memory indicated by index register X with contents of memory specified by the addressing mode. Shift the contents of accumulator or memory to the right by one bit. The low order bit of accumulator or memory is stored in carry, 7th bit is cleared. 4A 2 EA 2 3802 GROUP USER'S MANUAL 1 1 09 2 2 # APPENDIX 3.10 Machine instructions Addressing mode ZP, X OP n B5 4 ZP, Y # OP n 2 B6 4 ABS # OP n ABS, X # OP n 4C 3 3 20 6 3 AD 4 3 BD 5 2 AE 4 ABS, Y # OP n 3 B9 5 3 BE 5 IND Processor status register ZP, IND IND, X # OP n # OP n # OP n 6C 5 3 B2 4 2 02 7 2 3 IND, Y # OP n REL # OP n SP # OP n 22 5 A1 6 2 B1 6 2 3 7 # 2 6 5 4 3 2 1 0 N V T B D I Z C * * * * * * * * * * * * * * * * N * * * * * Z * * * * * * * * * N * * * * * Z * B4 4 2 AC 4 3 BC 5 3 N * * * * * Z * 56 6 2 4E 6 3 5E 7 3 0 * * * * * Z C * * * * * * * * * * * * * * * * N * * * * * Z * 62 15 2 15 4 2 0D 4 3 1D 5 3 19 5 3 01 6 2 11 6 3802 GROUP USER'S MANUAL 2 3-71 APPENDIX 3.10 Machine instructions Addressing mode Symbol Function Details IMP IMM A Saves the contents of the accumulator in memory at the address indicated by the stack pointer and decrements the contents of stack pointer by 1. 48 3 1 M(S) PS SS-1 Saves the contents of the processor status register in memory at the address indicated by the stack pointer and decrements the contents of the stack pointer by 1. 08 3 1 PLA SS+1 A M(S) Increments the contents of the stack pointer by 1 and restores the accumulator from the memory at the address indicated by the stack pointer. 68 4 1 PLP SS+1 PS M(S) Increments the contents of stack pointer by 1 and restores the processor status register from the memory at the address indicated by the stack pointer. 28 4 1 ROL 7 Shifts the contents of the memory or accumulator to the left by one bit. The high order bit is shifted into the carry flag and the carry flag is shifted into the low order bit. 2A 2 1 26 5 2 Shifts the contents of the memory or accumulator to the right by one bit. The low order bit is shifted into the carry flag and the carry flag is shifted into the high order bit. 6A 2 1 66 5 2 82 8 2 E5 3 2 PHP 0 C ROR 7 C RRF 7 0 0 Rotates the contents of memory to the right by 4 bits. RTI SS+1 PS M(S) SS+1 PCL M(S) SS+1 PCH M(S) Returns from an interrupt routine to the main routine. 40 6 1 RTS SS+1 PCL M(S) SS+1 PCH M(S) Returns from a subroutine to the main routine. 60 6 1 SBC (Note 1) (Note 5) When T = 0 AA-M-C Subtracts the contents of memory and complement of carry flag from the contents of accumulator. The results are stored into the accumulator. Subtracts contents of complement of carry flag and contents of the memory indicated by the addressing mode from the memory at the address indicated by index register X. The results are stored into the memory of the address indicated by index register X. When T = 1 M(X) M(X) - M - C E9 2 SEB Ab or Mb 1 Sets the specified bit in the accumulator or memory to "1". SEC C1 Sets the contents of the carry flag to "1". 38 2 1 SED D1 Sets the contents of the decimal mode flag to "1". F8 2 1 SEI I1 Sets the contents of the interrupt disable flag to "1". 78 2 1 SET T1 Sets the contents of the index X mode flag to "1". 32 2 1 Disconnects the oscillator output from the XOUT pin. C2 2 1 SLW 3-72 # OP n BIT, ZP # OP n PHA # OP n ZP OP n M(S) A SS-1 # OP n BIT, A 2 0B 2 + 2i 3802 GROUP USER'S MANUAL 1 # OP n 0F 5 + 2i # 2 APPENDIX 3.10 Machine instructions Addressing mode ZP, X OP n ZP, Y # OP n ABS # OP n ABS, X # OP n ABS, Y # OP n IND # OP n Processor status register ZP, IND # OP n IND, X # OP n IND, Y # OP n REL # OP n SP # OP n 7 # 6 5 4 3 2 1 0 N V T B D I Z C * * * * * * * * * * * * * * * * N * * * * * Z * (Value saved in stack) 36 6 2 2E 6 3 3E 7 3 N * * * * * Z C 76 6 2 6E 6 3 7E 7 3 N * * * * * Z C * * * * * * * * (Value saved in stack) * F5 4 2 ED 4 3 FD 5 3 F9 5 3 E1 6 2 F1 6 3802 GROUP USER'S MANUAL 2 * * * * * * * N V * * * * Z C * * * * * * * * * * * * * * * 1 * * * * 1 * * * * * * * * 1 * * * * 1 * * * * * * * * * * * * * 3-73 APPENDIX 3.10 Machine instructions Addressing mode Symbol Function Details IMP OP n STA MA # OP n Stores the contents of accumulator in memory. Stops the oscillator. STP IMM 42 2 A # OP n BIT, A # OP n ZP # OP n BIT, ZP # OP n 85 4 2 1 STX MX Stores the contents of index register X in memory. 86 4 2 STY MY Stores the contents of index register Y in memory. 84 4 2 TAX XA Transfers the contents of the accumulator to index register X. AA 2 1 TAY YA Transfers the contents of the accumulator to index register Y. A8 2 1 TST M = 0? Tests whether the contents of memory are "0" or not. 64 3 2 TSX XS Transfers the contents of the stack pointer to BA 2 index register X. 1 TXA AX Transfers the contents of index register X to the accumulator. 8A 2 1 TXS SX Transfers the contents of index register X to the stack pointer. 9A 2 1 TYA AY Transfers the contents of index register Y to the accumulator. 98 2 1 Stops the internal clock. C2 2 1 WIT Notes 1 2 3 4 5 3-74 : The number of cycles "n" is increased by 3 when T is 1. : The number of cycles "n" is increased by 2 when T is 1. : The number of cycles "n" is increased by 1 when T is 1. : The number of cycles "n" is increased by 2 when branching has occurred. : N, V, and Z flags are invalid in decimal operation mode. 3802 GROUP USER'S MANUAL # APPENDIX 3.10 Machine instructions Addressing mode ZP, X ZP, Y OP n # OP n 95 5 2 96 5 94 5 2 Symbol ABS ABS, X ABS, Y IND # OP n # OP n # OP n # OP n 8D 5 3 9D 6 3 99 6 3 Processor status register ZP, IND # OP n IND, X IND, Y REL # OP n # OP n # OP n 81 7 2 91 7 2 SP # OP n 7 # 6 5 4 3 2 1 0 N V T B D I Z C * * * * * * * * * * * * * * * * 2 8E 5 3 * * * * * * * * 8C 5 3 * * * * * * * * N * * * * * Z * N * * * * * Z * N * * * * * Z * N * * * * * Z * N * * * * * Z * * * * * * * * * N * * * * * Z * * * * * * * * * Contents Symbol IMP IMM A Implied addressing mode Immediate addressing mode Accumulator or Accumulator addressing mode BIT, A Accumulator bit relative addressing mode ZP BIT, ZP Zero page addressing mode Zero page bit relative addressing mode ZP, X ZP, Y ABS ABS, X ABS, Y IND Zero page X addressing mode Zero page Y addressing mode Absolute addressing mode Absolute X addressing mode Absolute Y addressing mode Indirect absolute addressing mode ZP, IND Zero page indirect absolute addressing mode IND, X IND, Y REL SP C Z I D B T V N Indirect X addressing mode Indirect Y addressing mode Relative addressing mode Special page addressing mode Carry flag Zero flag Interrupt disable flag Decimal mode flag Break flag X-modified arithmetic mode flag Overflow flag Negative flag + - V V - V - X Y S PC PS PCH PCL ADH ADL FF nn M M(X) M(S) M(AD H, ADL) M(00, AD L) Ab Mb OP n # 3802 GROUP USER'S MANUAL Contents Addition Subtraction Logical OR Logical AND Logical exclusive OR Negation Shows direction of data flow Index register X Index register Y Stack pointer Program counter Processor status register 8 high-order bits of program counter 8 low-order bits of program counter 8 high-order bits of address 8 low-order bits of address FF in Hexadecimal notation Immediate value Memory specified by address designation of any addressing mode Memory of address indicated by contents of index register X Memory of address indicated by contents of stack pointer Contents of memory at address indicated by ADH and ADL , in ADH is 8 high-order bits and ADL is 8 low-order bits. Contents of address indicated by zero page ADL 1 bit of accumulator 1 bit of memory Opcode Number of cycles Number of bytes 3-75 APPENDIX 3.11 SFR memory map 3.11 SFR memory map 000016 Port P0 (P0) 002016 Prescaler 12 (PRE12) 000116 Port P0 direction register (P0D) 002116 Timer 1 (T1) 000216 Port P1 (P1) 002216 Timer 2 (T2) 000316 Port P1 direction register (P1D) 002316 Timer XY mode register (TM) 000416 Port P2 (P2) 002416 Prescaler X (PREX) 000516 Port P2 direction register (P2D) 002516 Timer X (TX) 000616 Port P3 (P3) 002616 Prescaler Y (PREY) 000716 Port P3 direction register (P3D) 002716 Timer Y (TY) 000816 Port P4 (P4) 002816 000916 Port P4 direction register (P4D) 002916 000A16 Port P5 (P5) 002A16 000B16 Port P5 direction register (P5D) 002B16 000C16 Port P6 (P6) 002C16 PWM prescaler (PREPWM) 000D16 Port P6 direction register (P6D) 002D16 PWM register (PWM) 000E16 002E16 000F16 002F16 001016 003016 001116 003116 001216 003216 001316 003316 001416 003416 AD/DA control register (ADCON) 001516 003516 A-D conversion register (AD) 001616 003616 D-A1 conversion register (DA1) 001716 003716 D-A2 conversion register (DA2) 001816 Transmit/Receive buffer register (TB/RB) 003816 001916 Serial I/O1 status register (SIO1STS) 003916 001A16 Serial I/O1 control register (SIO1CON) 003A16 Interrupt edge selection register 001B16 UART control register (UARTCON) 003B16 CPU mode register (CPUM) 001C16 Baud rate generator (BRG) 003C16 Interrupt request register 1(IREQ1) 001D16 Serial I/O2 control register (SIO2CON) 003D16 Interrupt request register 2(IREQ2) 003E16 Interrupt control register 1(ICON1) 003F16 Interrupt control register 2(ICON2) 001E16 001F16 3-76 PWM control register (PWMCON) Serial I/O2 register (SIO2) 3802 GROUP USER'S MANUAL (INTEDGE) APPENDIX 3.12 Pin configuration 3.12 Pin configuration 34 33 36 35 38 37 39 41 40 43 42 45 44 46 48 49 32 50 31 51 52 30 53 28 54 27 26 29 55 56 57 25 M38022M4-XXXFP 24 58 23 59 60 22 21 61 20 62 19 63 18 17 15 16 13 14 10 11 12 9 8 7 6 5 3 4 1 2 64 P20/DB0 P21/DB1 P22/DB2 P23/DB3 P24/DB4 P25/DB5 P26/DB6 P27/DB7 VSS XOUT XIN P40/INT4 P41/INT0 RESET CNVSS P42/INT1 P62/AN2 P61/AN1 P60/AN0 P57/INT3 P56/PWM P55/CNTR1 P54/CNTR0 P53/SRDY2 P52/SCLK2 P51/SOUT2 P50/SIN2 P47/SRDY1 P46/SCLK1 P45/TXD P44/RXD P43/INT2 P37/RD P36/WR P35/SYNC P34/ P33/RESETOUT P32/ONW P31/DA2 P30/DA1 VCC VREF AVSS P67/AN7 P66/AN6 P65/AN5 P64/AN4 P63 /AN3 47 P00/AD0 P01/AD1 P02/AD2 P03/AD3 P04/AD4 P05/AD5 P06/AD6 P07/AD7 P10/AD8 P11/AD9 P12/AD10 P13/AD11 P14/AD12 P15/AD13 P16/AD14 P17/AD15 PIN CONFIGURATION (TOP VIEW) Package type : 64P6N-A 64-pin plastic-molded QFP 3802 GROUP USER'S MANUAL 3-77 APPENDIX 3.12 Pin configuration PIN CONFIGURATION (TOP VIEW) 1 64 2 63 3 62 4 61 5 60 6 59 7 58 8 57 9 56 10 55 11 54 12 53 13 14 15 16 17 18 19 20 M38022M4-XXXSP VCC VREF AV SS P67/AN 7 P66/AN 6 P65/AN 5 P64/AN 4 P63/AN 3 P62/AN 2 P61/AN 1 P60/AN 0 P57/INT 3 P56/PWM P55/CNTR 1 P54/CNTR 0 P53/SRDY2 P52/SCLK2 P51/SOUT2 P50/SIN2 P47/SRDY1 P46/SCLK1 P45/TXD P44/RXD P43/INT 2 P42/INT 1 CNV SS RESET P41/INT 0 P40/INT 4 XIN XOUT VSS 52 51 50 49 48 47 46 45 21 44 22 43 23 42 24 41 25 40 26 39 27 38 28 37 29 36 30 35 31 34 32 33 P30/DA 1 P31/DA 2 P32/ONW P33/RESET OUT P34/ P35/SYNC P36/WR P37/RD P00/AD 0 P01/AD 1 P02/AD 2 P03/AD 3 P04/AD 4 P05/AD 5 P06/AD 6 P07/AD 7 P10/AD 8 P11/AD 9 P12/AD 10 P13/AD 11 P14/AD 12 P15/AD 13 P16/AD 14 P17/AD 15 P20/DB 0 P21/DB 1 P22/DB 2 P23/DB 3 P24/DB 4 P25/DB 5 P26/DB 6 P27/DB 7 Package type : 64P4B 64-pin shrink plastic-molded DIP 3-78 3802 GROUP USER'S MANUAL MITSUBISHI SEMICONDUCTORS USER'S MANUAL 3802Group Mar. First Edition 1996 Editioned by Committee of editing of Mitsubishi Semiconductor USER'S MANUAL Published by Mitsubishi Electric Corp., Semiconductor Marketing Division This book, or parts thereof, may not be reproduced in any form without permission of Mitsubishi Electric Corporation. (c)1996 MITSUBISHI ELECTRIC CORPORATION User's Manual 3802 Group MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE: MITSUBISHI DENKI BLDG., MARUNOUCHI, TOKYO 100. TELEX: J24532 CABLE: MELCO TOKYO H-EE417-A KI-9603 Printed in Japan (ROD) (c) 1996 MITSUBISHI ELECTRIC CORPORATION New publication, effective Mar. 1996. Specifications subject to change without notice. REVISION DESCRIPTION LIST Rev. No. 1.0 3802 GROUP USER'S MANUAL Revision Description First Edition Rev. date 980110 (1/1)