CML-12C32 - AXIOM - Datasheet.Directory

DOC-0324-010, REV B

Axiom Manufacturing • 2813 Industrial Lane • Garland, TX 75041

Email: Sales@axman.com Web: http://www.axman.com

CML-12C32

Development Board for Freescale MC9S12C32

CML-12C32 MARCH 16, 2005

CONTENTS

CAUTIONARY NOTES .........................................................................................4

TERMINOLOGY...................................................................................................................4

FEATURES ...........................................................................................................5

GETTING STARTED.............................................................................................6

REFERENCE DOCUMENTATION.......................................................................................6

INSTALLING THE SOFTWARE...........................................................................................7

BOARD STARTUP...............................................................................................................7

SUPPORT SOFTWARE.......................................................................................................8

SOFTWARE DEVELOPMENT.............................................................................................8

TUTORIAL.............................................................................................................8

CREATING SOURCE CODE ...............................................................................................8

ASSEMBLING SOURCE CODE ..........................................................................................9

EXECUTING APPLICATIONS ...........................................................................................10

OPTIONS and JUMPERS...................................................................................10

MEM_EN............................................................................................................................10

MODE ................................................................................................................................11

NO_AUTO..........................................................................................................................11

RANGE ..............................................................................................................................11

JP1 POT_OUT_SEL ..........................................................................................................11

J2 LCD EXPANSION .........................................................................................................12

VRH_EN/VRL_EN..............................................................................................................12

CUT-TRACE OPTIONS .....................................................................................................12

USER I/O ...........................................................................................................................13

Table 4: User I/O Connections...........................................................................................13

PORTS AND CONNECTORS.............................................................................13

POWER CONNECTORS ...................................................................................................13

BDM PORT ........................................................................................................................13

BUS_PORT........................................................................................................................14

MCU_PORT .......................................................................................................................15

KEYPAD / PORT P ............................................................................................................15

COMMUNICATIONS..........................................................................................................16

Figure 1: COM1 Connector................................................................................................16

CAN PORT.........................................................................................................................16

LCD PORT .........................................................................................................................17

Figure 2: LCD Connector...................................................................................................17

J2 - LCD EXPANSION ......................................................................................................18

TEST POINTS....................................................................................................................18

TROUBLESHOOTING ........................................................................................18

TIPS AND SUGGESTIONS ...............................................................................................19

Utilities...............................................................................................................................19

Code Execution..................................................................................................................20

LCD Codes .........................................................................................................20

LCD COMMAND CODES ..................................................................................................20

CML-12C32 MARCH 16, 2005

LCD CHARACTER CODES ...............................................................................................21

MON12 OPERATION..........................................................................................21

AUTOSTART .....................................................................................................................22

MON12 MEMORY MAP.....................................................................................................22

MON12 MONITOR COMMANDS.......................................................................................23

MONITOR UTILITY JUMP TABLE.....................................................................................24

MON12 INTERRUPT SUPPORT .......................................................................................24

MONITOR INTERRUPT VECTOR TABLE.........................................................................25

BDM OPERATION ..............................................................................................26

APPENDIX A.......................................................................................................27

HCS12 SERIAL MONITOR OPERATION ..........................................................................27

SERIAL MONITOR MEMORY MAP...................................................................................27

CONFIGURATION .............................................................................................................27

APPENDIX B.......................................................................................................28

BILL OF MATERIALS ........................................................................................................28

REVISION HISTORY

October 2004 A Initial Release

March 16, 2005 B Updated IRQ vector in MON12 description

CML-12C32 MARCH 16, 2005

CAUTIONARY NOTES

1) Electrostatic Discharge (ESD) prevention measures should be used when handling this

product. ESD damage is not a warranty repair item.

2) Axiom Manufacturing does not assume any liability arising out of the application or use of

any product or circuit described herein; neither does it convey any license under patent

rights or the rights of others.

3) EMC Information on the CML-12C32 development board:

a) This product as shipped from the factory with associated power supplies and cables, has

been verified to meet with requirements of CE and the FCC as a CLASS B product.

b) This product is designed and intended for use as a development platform for hardware

or software in an educational or professional laboratory.

c) In a domestic environment, this product may cause radio interference in which case the

user may be required to take adequate prevention measures.

d) Attaching additional wiring to this product or modifying the products operation from the

factory default as shipped may effect its performance and cause interference with nearby

electronic equipment. If such interference is detected, suitable mitigating measures

should be taken.

Terminology

This development board uses option selection jumpers and cut-traces to setup default configu-

ration. Terminology for application of the option jumpers is as follows:

Jumper – a plastic shunt that connects 2 terminals electrically

Jumper on, in, or installed - jumper is installed such that 2 pins are connected together

Jumper off, out, or idle - jumper is installed on 1 pin only. It is recommended that jump-

ers be idled by installing on 1 pin so they will not be lost.

Cut-Trace – a circuit trace connection between component pads. The circuit trace may

be cut using a razor knife to break the default connection. To reconnect the circuit,

simply install a suitably sized 0-ohm resistor or attach a wire across the pads.

CML-12C32 MARCH 16, 2005

FEATURES

The CML-12C32 development board provides a stable development platform for the Motorola

MC9S12C32 MCU. The included wall plug, DB9 serial cable, sample software tools, exam-

ples, and debug monitor makes application development quick and easy. A background

DEBUG port is provided for development tool use and is compatible with HCS12 BDM inter-

face cables and software. This board may be used as a stand-alone development platform or

along with the Axiom Manufacturing Project Board as an enhanced learning environment.

FEATURES:

♦ MC9S12C32 MCU, 80 QFP

♦ 32K Byte Flash EEPROM

♦ 2K Bytes RAM

♦ 60 I/O lines

♦ Timer/PWM

♦ SCI and SPI Communications Ports

♦ Key Wake-up Port

♦ BDM DEBUG Port

♦ CAN 2.0 Module

♦ Analog-to-Digital Converter

♦ 8 Mhz Internal Bus Operation Default

♦ 16 MHz Bus Operation using internal PLL

♦ 64 KB External SRAM

♦ MCU_PORT and BUS_PORT connectors provide

access to MCU signals

♦ On-board, regulated +5V power supply

♦ Optional power output through connector J1

♦ 16 MHz Crystal Oscillator

♦ RS-232 Serial Port w/ DB9 Connector

♦ 8-Ch, 10-bit, Analog-to-Digital Converter with full rail-to-rail operation and external trigger capability

♦ 8-Channel, 16-bit Timer with Input Capture, Output Compare, and PWM capabilities

♦ User Components Provided

♦ 3 Push Button Switches: 2 User, RESET

♦ 4 LED Indicators: 2 User, VDD, RESET

♦ 3 Configuration Option Jumpers

♦ Connectors

♦ 60-pin MCU_PORT Socket Header

♦ 28-pin BUS_PORT Socket Header

♦ DB9 Communications Connector

♦ DEBUG BDM Connector

♦ 4-pin CAN_PORT Connector

♦ 8-pin Keypad Connector

♦ 14-pin LCD Connector

♦ 2.0mm Barrel Connector Power Input

♦ Solderless Breadboard Area, 3.5” x 1.75”

♦ Supplied with DB9 Serial Cable, Documentation (CD), Manual, and Wall plug type power supply.

Specifications:

Board Size 4.5” x 5.0”

Power Input: +9VDC @ 200 mA typical, +6 to +16VDC range

CML-12C32 MARCH 16, 2005

GETTING STARTED

The CML-12C32 single board computer is a fully assembled, fully functional development

board for the Motorola MC9S12C32 microcontroller. The board comes with a serial cable,

power supply, and installed binary monitor for stand-alone operation. Support software for this

development board is provided for Windows 95/98/NT/2000/XP operating systems.

Users should be familiar with the hardware and software operation of the target MCU. Refer to

the MC9S12C32 User Manual and Reference Manual for details on MCU operation. The

board’s purpose is to promote the features of the MC9S12C32 and to assist the user in quickly

developing an application in a known working environment. Users should be familiar with

memory mapping, memory types, and embedded software design for quick, successful, appli-

cation development. The user should also be familiar with the various operation modes of the

MCU.

NOTE: With the MCU in expanded mode, the user can not access to Port A, Port B, or Port E.

Application development may be performed by using the embedded binary monitor, or any

compatible MCU BDM cable with supporting host software. The included monitor provides an

effective and low-cost debug method. Note that when a BDM cable is used for debugging, the

BDM pod should be powered from an external supply.

A debug monitor is loaded in the MC9S12C32 internal flash memory and uses some MCU re-

sources for operation. User application may be executed by loading the program start address

into the Reset Vector (0xF7FE, 0xF7FF) and loading the program into device Flash Memory.

The monitor remains in protected flash memory for future use if needed.

Refer to the MC9S12C32 Reference Manual for details on using a BDM pod with the CSM-

12C32 board. Refer to Appendix A for a pin-out of the BDM_PORT connector.

Reference Documentation

Reference documents are provided on the support CD in Acrobat Reader format. More infor-

mation can be found in the Application Notes section of the Motorola Web site.

CML12C32_SCH_C.pdf CML-12C32 Board Schematic Rev B

CML12C32_UG.pdf CML-12C32 User Guide (this document)

CML12_SerMon.phy Serial Monitor Physical Record Object Code File

CML12_SerMon.sx Serial Monitor S-Record Object Code File

9S12C32DGV1.pdf MC9S12C32 Device User Guide

9S12C32_ZIP.zip Zip file containing Device Block User Guides

AN2548.pdf Serial Monitor Program for HCS12 MCU’s

CML-12C32 MARCH 16, 2005

Installing the Software

The following steps will help the user to get started quickly and verify the board is working

properly.

1. Insert the Axiom 68HC12 support CD in your PC. If the setup program does not start,

execute the file <D:>\SETUP.EXE where <D:> is the drive letter of the CD drive.

2. Follow the instructions on screen to install the support software onto your PC. At mini-

mum, AxIDE for Windows software should be installed.

3. To compile designs correctly, the target MCU must be specified within the AxIDE utility.

Select the “CML12C32 MCU target to correctly compile application designs.

NOTE: If “CML12C32” is not available, select the "CML12SDP256" MCU target.

Board Startup

Follow these steps to connect and power-on the board for default Monitor operation. The fol-

lowing steps assume use of the AxIDE utility (installed in the previous section). If a different

terminal program is used, ensure the communications port settings are set to: 9600 bps, No

parity, 8 data bits, and 1 stop bit.

1. Set the CML-12C32 board Option jumpers to default positions:

MEM-EN ON

NOAUTO ON

RANGE don’t care

2. Connect one end of the supplied 9-pin serial cable to an available serial COM port on your

PC. Connect the other end of the cable to the COM1 port on the CML-12C32 board.

3. Open the AxIDE program.

4. Apply power to the board by connecting the power adapter that came with the system.

5. If configured properly, the message “PRESS KEY TO START MONITOR…” should dis-

play in the terminal window. Press the SPACEBAR and you should see:

Axiom MON12 - HC12 Monitor / Debugger V32.0

Type "Help" for commands…

> _

6. The board is now ready to use! If this message prompt is not displayed, or if the display is

meaningless, refer to the TROUBLESHOOTING section at the end of this manual.

CML-12C32 MARCH 16, 2005

Support Software

There are many programs and documents on the included HC12 support CD that support the

CML-12C32 board. Install any desired applications from the CD main menu. Documentation

and example code may be copied directly from the CD.

AT minimum, the AxIDE terminal program should be installed. AxIDE provides a simple termi-

nal interface between the host PC and the CML-12C32 development board. The program in-

tegrates an assembler, a flash programming utility, and a serial communication interface.

Also on the disk are free assemblers AS12 and MCU-EZ, the open source GNU C/C++ com-

piler tools for HC11/12, example source code, and other useful software. The introductory tu-

torial in this manual uses the free AS12 assembler integrated into the AxIDE program. This is

a simple assembler with limited capability. For a more powerful assembly tool, install the Mo-

torola MCUez program from the CD.

Software Development

Software development on the CML-12C32 can be performed using either the embedded

monitor installed in the MCU internal FLASH, a third party debugger (Debug12, NoICE,

CodeWarrior, etc.) or a Background Debug Module (BDM) connected to the BDM PORT con-

nector. Any of these tools can be used to assist in creating and debugging programs stored in

RAM (see Memory Map).

After satisfactory operation running under a debugger, the program can be written to internal

Flash Memory using the included programming utilities. The embedded monitor relocates the

interrupt vectors to RAM memory and provides an AUTOSTART feature to launch applications.

Loaded programs will then run automatically whenever the board is powered or RESET is ap-

plied.

TUTORIAL

This section was written to help the user get started developing software for the CML-12C32

development board. Read rest of this User’s Guide and additional documentation on the CD

for further information.

The following sections illustrate the complete development cycle for a simple "hello world" pro-

gram. This program sends the text string "Hello World" to the serial port. The following exam-

ple assumes the use of the AxIDE interface and the free assembler, AS12. Both utilities are

provided on the software CD.

Creating Source Code

Source code may be created using any ASCII text editor, such as WindowsTM Notepad. Note,

the source file must be simple ASCII text with no document formatting. After the source code

is written and saved, the file must be assembled to a Motorola S-Record (hex) format. This

type of output file usually has a .MOT, .HEX or .S19 file extension and is in a format that can

be read by, and programmed into the development board MCU.

CML-12C32 MARCH 16, 2005

It is important the user understand the development board's use of addressing and memory

when writing source code. Program code must be located at a valid address. For instance, in

debug mode, program code should be located in external RAM. In assembly language, the

ORG statement is used to locate user code in memory. All program code following an ORG

statement will begin at the specified memory location, for example: ORG $4000; locates the

code starting at address $4000. DATA (or variables) must be located in RAM unused by pro-

gram code, for example: ORG $800.

In debug mode the debugger utility handles all MCU configuration setup; CPU and STACK ini-

tialization, and interrupt vectors (reset, timers, etc) setup. When program development is

complete, the application code must be modified to include CPU and STACK initialization, and

interrupt vector setup. CPU setup initializes the bus frequency, bus mode, and Flash memory

programming clock rates, and other constraints. STACK setup initializes the stack pointer.

The STACK should be set to the top of available RAM, by default $0FFF. In assembly the ap-

propriate instruction is LDS #$0FFF. The RESET vector must also be written to the User Re-

set Vector.

The installed monitor is not required when using a BDM interface. The BDM tool may have the

capability to erase and program the FLASH memory. If this is the case, MCU resources used

by the monitor are available to the user. The embedded monitor S-record (.S19) is provided

on the support CD to program into flash if required. The BDM allows locating programs in

memory and using monitor reserved resources.

A look at the example programs on the disk will make this clearer. If using a compiler instead

of an assembler, consult the compiler documentation for methods used to locate (MAP) code,

data, and stack.

Assembling Source Code

The example program HELLO.ASM is provided under the <D:>\EXAMPLES\CML12 directory

on the CD. If the AxIDE utility is installed, the example program can also be found in the

AxIDE3\EXAMPLE\HC12\D256 directory. You must use the example program for the target

MCU type. For this example, use the example code in the \D256 directory.

The AxIDE utility software provided with this board contains a simple interface to the AS12 as-

sembler Follow these steps to assembly the test program;

1. In the AxIDE window, click the BUILD button. This will open an Assemble Code window.

2. In the Assemble Code window, click the BROWSE button to browse to the program file to

assemble. For this example, select the file AxIDE3\EXAMPLE\HC12\D256\Hello.asm.

3. In the Assemble Code window, select the OK button to assemble the test program.

NOTE: The correct target MCU must be selected from the pull-down selection or the file will

not assemble correctly. DO NOT use long path or file names (> 8 characters). AS12 is a DOS

based tool and does not understand long path or file name. The program code may not as-

semble correctly.

If the source code assembles with no fatal errors 2 output files are created:

CML-12C32 MARCH 16, 2005

HELLO.S19 a Motorola S-Record file that can be programmed into memory.

HELLO.LST a common listing file which provides physical address information

with resulting opcode and operand information. Warnings and error

messages are provided with a summary at the end of this file.

The list (.LST) file is especially helpful when debugging. The list file shows each error en-

countered and its location. Fatal errors prevent the output files from being generated. A count

of errors and warnings encountered can be found at the end of the list file.

Executing Applications

After creating a Motorola S-Record file, "upload" it to the development board for a test run.

The provided example “HELLO.ASM” was created to run from external RAM. The embedded

monitor can be used to test the program without programming it into Flash.

If not already completed, verify that the CML-12C32 board is connected and operating properly

by following the steps under “GETTING STARTED” until you see the monitor prompt, then fol-

low these steps to run your program:

1. Press and release the RESET button on the CML-12C32 board. You should see the

PRESS ANY KEY message. Press the letter E key to get the monitor prompt.

2. Type LOAD ↵

This will prepare the embedded monitor to receive a program.

3. Click the Upload button and when prompted for a file name select your assembled pro-

gram file in S-record format that was created in the previous section called: HELLO.S19.

Your program will be sent to the board through the serial port.

4. When finished loading the > prompt returns. Type: GO 4000 ↵. This starts program

execution at address 4000h. This is the starting address of the test program.

5. If everything is working properly, the message “Hello World” will echo back to the terminal

screen. Press RESET to return to the monitor.

6. If this message is not displayed on the terminal monitor, see the TROUBLESHOOTING

section of this manual

The “Hello World” program can be easily modified to display other strings or perform other

functions. Procedures for assembling, uploading, and executing program code are the same.

The embedded monitor many features to support program debug such as breakpoints, mem-

ory dump and modify, and simple program trace (redirect of the PC is not followed). Type

HELP at the monitor prompt for a listing of commands or consult the monitor documentation on

the disk for more information.

OPTIONS and JUMPERS

MEM_EN

CML-12C32 MARCH 16, 2005

The MEM_EN option jumper is installed by default and enables access to the external SRAM

memory when the MCU is configured for expanded mode operation. Removing the MEM_EN

option jumper disables external memory access.

MODE

The MODE option jumper is not installed on the CML-12C32 board and is hard connected by

circuit copper trace for Single-chip Mode operation of the CPU. MODA and MODB signals are

terminated by this option. Single Chip Mode operation is selected by default because the MCU

internal flash memory provides the only nonvolatile program memory on the board. All other

Modes can be enabled under software control from this mode of operation.

The MODE option jumper may be installed by the user by cutting the circuit trace and installing

a 2-position header with a shunt jumper. With the shunt jumper removed, the Reset mode will

then be Normal Expanded Wide. External non-volatile memory must be added to support this

functionality.

NO_AUTO

The NO_AUTO jumper prevents the MCU from executing program code at start up. Enable

automatic program execution by removing this jumper. To use the auto-start feature, the cor-

rect reset vector must be loaded to point to the location of program code.

RANGE

The CML-12C32 board provides a 20-turn, 10 kΩ, precision, potentiometer (POT) with adjust-

able range for use in circuit prototyping. The RANGE jumper selection of output range. In-

stalling the option jumper provides the full range output from the POT from GND to VDD. Re-

moving the option jumper places a 10k Ω resistor in series with the POT limiting output from

GND to ½ VDD.

JP1 POT_OUT_SEL

The JP1 option jumper selects where the destination of the potentiometer. The output of the

POT may be routed to a MCU analog port input (PAD7/AN7) or to the BUS_PORT header for

use on prototyping area.

CML-12C32 MARCH 16, 2005

1 PAD7/AN7 (U1-58)

2POT

3 MCU_PORT-27

Shunt across pins 1-2 to route POT output to the MCU.

Shunt across pins 2-3 to route POT output to the MCU_PORT

connector, pin 27.

J2 LCD EXPANSION

The J2 option header is explained in detail in the LCD_PANEL section below.

VRH_EN/VRL_EN

The VRH_EN and VRL_EN option headers are not installed on the CML-12C32 board and are

hard connected by circuit copper trace for default operation. These jumpers provide voltage

reference inputs for the MCU analog to digital converter block. Alternative upper and lower

reference voltages may be used by cutting the circuit trace and attaching a jumper wire to the

appropriate pin of VRH_EN and VRL_EN. After cutting the circuit trace, use of default refer-

ence voltages will require installing a 2-position header with a shunt jumper. Refer to the PCB

schematic for further details.

CUT-TRACE OPTIONS

A CUT-TRACE is a component pad connected by a circuit trace. The cut-trace sets up default

board operation. Cut-trace options allow the user to disconnect or modify on-board resource

configurations. The cut-trace pad also allow for reestablishing the connection by installing

surface mount, 1206 size, 0-ohm resistors or mod-wire. Normal operation of the development

board generally does not require manipulating any CUT_TRACE option.

CT1: Not Used.

CT2: Not Used.

CT3: MCU Port M1/TXCAN signal to the CAN Controller Interface.

CT4: MCU Port M0/RXCAN signal to the CAN Controller Interface.

CT5: CAN Port Transceiver Enable. The default connections enables device output con-

stantly. This connection enables the CAN Port transceiver output to the CAN bus. To

use slew rate control or MCU controlled enable on the transceiver, this option should be

cut and 1206 size resistor installed for slew rate control or a MCU I/O port attached for

output enable control. See the PCA82C250 data sheet for application information.

CT6: Vcc input to the LCD panel.

CT7: GND input to the LCD. panel.

CML-12C32 MARCH 16, 2005

User I/O

Two indicators, LED1 and LED2, are connected directly to the MCU and may be used for user

application output. Each LED is active high. A logic high driven out on the appropriate MCU

port causes the LED to light. MCU ports PS2 and PS3 drive LED1 and LED2 respectively.

Two push button switches, SW1 and SW2, provide momentary, active low, input to the MCU

for user application input. Pressing either switch causes a logic low to be seen at the MCU port

input. SW1 and SW2 provide input to MCU I/O ports PJ6 and PJ7 respectively. The table

below details how each user option connects to the MCU.

Table 4: User I/O Connections

Jumper MCU Signal

LED1 PS2

LED2 PS3

SW1 PJ6/KWJ6

SW2 PJ7/KWJ7

PORTS AND CONNECTORS

Power Connectors

Power connectors J1 and TB1 provide power input to the board. Voltage input should be lim-

ited to the range of +6VDC to +16VDC with +9VDC typical. Voltage should be applied to the

board at either J1 or TB1 but not both. Applying input voltage to both input connectors at the

same time will cause a supply conflict and damage the CML-12C32 may result.

Connector J1 accepts a standard 2.1mm barrel plug connector with positive voltage center.

Connector TB1 accepts 18G – 24G solid copper wire. TB1 may also be used to gain access to

on-board power levels +Vin, GND, or +5VDC for off-board use. The +5VDC output may be

used to power off-board circuitry if desired. However, the voltage regulator output is internally

limited to 250 mA.

BDM PORT

The BDM port is a 6-pin header compatible with the Motorola Background Debug Mode (BDM)

Pod. This allows the connection of a background debugger for software development, pro-

gramming and debugging in real-time without using HC12 I/O resources.

BGND 1 2 GND

NC 3 4 /RESET

NC 5 6 +5V

See the HC12 Technical Reference Manual for

complete documentation of the BDM.

A Background Debug Module is available from the Axiom Manufacturing.

CML-12C32 MARCH 16, 2005

BUS_PORT

The BUS_PORT provides access to Port E signal and to latched address signals. Care should

be taken when using these signals. Excessive load may adversely affect MCU operation.

PE0/XIRQ* 1 2 PE1/IRQ*

PE2/RW* 3 4 PE3/LSTRB*

PE4/ECLK 5 6 PE5/MODA

PE6/MODB 7 8 PR7/XCLKS*

+5 910 GND

A0 11 12 A1

A2 13 14 A3

A4 15 16 A5

A6 17 18 A7

A8 19 20 A9

A10 21 22 A11

A12 23 24 A13

A14 25 26 A15

POT 27 28 GND

A[15..0] Latched Memory Addresses 0 to 15.

PE[7..0] MCU expanded bus control signals

CML-12C32 MARCH 16, 2005

MCU_PORT

The MCU_PORT provides signal access between the MCU and the breadboard. This con-

nector is designed to interface directly with the Axiom Manufacturing Project Board through a

60-pin ribbon cable. This connector will also support ribbon-cable connection to the Axiom

Manufacturing MCU Project Board.

GND 60 59 GND

+5V 58 57 +5V

PP4 56 55 PP5

PAD3 54 53 PAD2

PAD1 52 51 PAD0

PAD7 50 49 PP3

PAD6 48 47 PP2

PAD5 46 45 PP1

PAD4 44 43 PP0

PA0 42 41 PA1

PA2 40 39 PA3

PA4 38 37 PA5

PA6 36 35 PA7

PT0 34 33 PT1

PT2 32 31 PT3

PT4 30 29 PT5

PT6 28 27 PT7

PP6 26 25 PM3/SS*

PM5/SCK 24 23 PM4/MOSI

PM2/MISO 22 21 PS1/TXD

PS0/RXD 20 19 PE1/IRQ*

PE0/XIRQ* 18 17 RESET*

PB7 16 15 PB6

PB5 14 13 PB4

PB3 12 11 PB2

PB1 10 9PB0

PM1/TXCAN 8 7 PM0/RXCAN

PP7 6 5 PJ7

PJ6 4 3 PS3

PS2 2 1 GND

The MCU_PORT provides access to the peripheral

features and I/O lines of the HCS12.

** Note signals with alternate connections on the devel-

opment board:

PA[7..0]/AD[7..0] provide multiplexed address /

data on the expanded mode MCU.

PB[7..0]/AD[7..0] provide multiplexed address /

data on the expanded mode MCU.

PM[1..0]/[TXCAN, RXCAN] CAN channel to

CAN Port transceiver.

PM[5..0] (SPI Port) provides LCD PORT serial

interface.

PS[1..0] COM Port RXD, TXD provides serial

RS-232 interface.

KEYPAD / PORT P

The KEYPAD / PORT-P connector supports connection of a passive 12-key or 16-key keypad.

This connector also provides connection directly to Port P on the MCU. Current limit is not

provided on any KEYPAD input and should be provided by the user if needed or desired.

1PP0

2PP1

3PP2

4PP3

5PP4

6PP5

7PP6

8PP7

This interface is implemented as a software

key scan. Use pins PP[3..0] as active high

column driver outputs. Use pins PP[7..4] as

row inputs. Each row input will read high

when the associated row is active.

CML-12C32 MARCH 16, 2005

COMMUNICATIONS

The CML-12C32 board provides a single RS-232 communications port consisting of a 9-pin

DSUB connector and an RS-232 transceiver. The transceiver (U7) provides RS-232 signal

level to TTL/CMOS logic level translation. Serial communications signals TXD and RXD are

routed from the transceiver to MCU. The remaining signals are available at test points located

behind the COM connector. RTS has been biased properly to support 2-wire RS-232 commu-

nications.

Figure 1: COM1 Connector

TXD 27RTS

RXD 38CTS

49N/C

GND 5

Female DB9 connector that interfaces to the MCU internal SCI

serial port via the RS232 transceiver (U7). It provides simple 2-

wire asynchronous serial communications without flow control.

Flow control is provided at test points on the board.

Pins 1, 4, and 6 are connected together.

CAN PORT

This port provides a CAN Bus interface associated with MCU CAN channel. The port has a

CAN Transceiver (Philips PCA82C250) capable of up to 1M Baud data rate. The user may

isolate the MCU CAN channel from the transceiver by cut-traces CT3, CT4, and CT5.

1GND

2CAN-H

3CAN-L

4+5V

The CAN Port connector provides an interface to the

MSCAN12 channel in the MCU.

CAN BUS TRANSMIT ENABLE

The CAN port transceiver transmit driver is enabled for maximum drive and minimum slew rate

by default. The drive and slew rate may be adjusted by cutting cut-trace CT6 and adding a

1206 size surface mount resistor, see the PCA82C250 data sheet for details on resistor value

selection.

CAN Bus Transceiver transmit enable control can be applied to the port using the RS tie pad.

The user should select an available MCU I/O port to perform the transmit enable function and

connect it from the MCU_PORT pin to the RS pad as required. The transmit enable signal to

the CAN transceivers is active low logic.

NOTE: Cut-trace, CT6, must be open to use the transmit enable control sig-

nal.

CAN BUS TERMINATION

The CAN port provides RC11, RC12, and RC13, 1206 SMT size, termination resistor locations

on the bottom side of the CML-12C32 board. These termination resistors are not installed at

CML-12C32 MARCH 16, 2005

the factory. The termination resistors provide optional bias and termination impedance for the

CAN bus connected to the CAN Port. Type of wire media, data rate, length of wire, and num-

ber of CAN bus nodes all effect the requirement or value of the termination for the CAN bus.

User should refer to particular application for termination requirements.

RC11 CAN-H Bias Resistor: Provides bias to ground potential.

RC12 CAN Termination Resistor: Provides end-point termination between CAN-H and

CAN-L signal.

RC13 CAN-L Bias Resistor: Provides bias to +5V potential.

LCD PORT

The LCD PORT interface is connected to the MCU SPI port and uses a serial shift register to

convert the data to parallel interface for LCD input. This is necessary due to the fast timing

characteristics of the MCU data bus and the slow timing of standard LCD Modules. Example

LCD Port assembly language driver software is provided on the support CD to demonstrate

typical LCD module operation using this technique.

The installed interface, in default configuration, supports all OPTREX™ DMC series and similar

displays with up to 80 characters in 4-bit bus mode and provides the most common pinout for a

dual row rear mounted display connector. The LCD module VEE or contrast potential is set 0

Volts on this board. This configuration requires the LCD module be TN style (Standard Twist)

and Reflective to support this VEE potential. The Axiom Mfg. HC-LCD is also compatible. The

LCD Module is configured for Write only mode. It is not possible to read current cursor posi-

tion or the busy status back from the module.

Connector J2 located directly adjacent to the installed LCD connector support LCD panels up

to 160 characters in 4-bit bus mode. To implement a larger LCD panel, refer to the J2 descrip-

tive text below for configuration information. Refer to the PCB schematic for further details.

Figure 2: LCD Connector

+5V 2 1 GND

RS 4 3 VEE-GND

EN 6 5 R/W-GND

DB1 8 7 DB0

DB3 10 9DB2

DB5 12 11 DB4

DB7 14 13 DB6

SPI data bit definitions to LCD Port:

DB[7..4] – LCD data bits D[3..0]

DB[3..0] – Unused, 10K ohm pull-downs installed

EN – 1, LCD enable

R/W – Read/Write pin, set to 0 volts, Read only

EN – LCD enable input, 1 = LCD enable

VEE – LCD contrast input, set to 0 volts

RS – Register Select, 0 = LCD Command, 1 = LCD Data

NOTES:

1) The above connector shows connections for a standard 80-character LCD panel.

2) The LCD write requires 3 SPI transfers. Transfer 1 provides data 0 - 3 and RS (register se-

lect) value. Transfer 2 provides the same data with the EN (D7) bit set. Transfer 3 provides

same data with the EN bit clear.

3) Resistor R22 can be removed to apply and external VEE potential.

4) The LCD Port cannot be isolated from the MCU SPI port.

CML-12C32 MARCH 16, 2005

J2 - LCD EXPANSION

Header J2 allows the use of a 160-character LCD panel. Refer to LCD port section above for

details on the LCD PORT. To implement this option, modification wire from J2-2 to the LCD

panel must be installed. Also, the +5V and GND inputs on the LCD PORT connector must be

reversed. This is accomplished using CT6 and CT7. GND must be connected to LCD PORT-

2 and +5V must be connected to LCD PORT-1. Simply cut both cut-traces and use mod-wire

to route power as needed. To revert to a standard 40-character LCD panel simply remove the

installed mod-wire and 0-ohm, 1206 size, resistors across CT6 and CT7. A mod-wire jumper

across each cut-trace will also suffice. Refer to the PCB schematic and the OPTREXTM LCD

panel documentation for further details.

NC 1 2 EN1 EN1 – LCD enable input, 1 = LCD enable

TEST POINTS

The following test points are provided on the development board:

VDD1/VDD2: 2.5V digital logic voltage. Derived from the MCU internal voltage regulator.

XFC : MCU PLL reference voltage and filter

VDDPLL : 2.5V input to PLL

+5V: Regulated +5 voltage

GND: Ground plane reference

RTS COM1 flow control signal Ready To Send. TTL/CMOS logic level.

CTS COM1 flow control signal Clear To Send. TTL/CMOS logic level.

RS Slew rate control for CAN Port

Vref1 CAN Port reference voltage output

TROUBLESHOOTING

The CML-12C32 board is fully tested and operational before shipping. If it fails to function

properly, inspect the board for obvious physical damage first. Verify the communications setup

as described under GETTING STARTED and see the Tips and Suggestions section for more

information.

The most common problems are improperly configured communications parameters, and at-

tempting to use the wrong COM port.

1. Verify the power source. You should measure a minimum of 6 volts between the GND and

+VIN connections on the TB1 power connector.

2. If no voltage is present, verify the wall plug connections to 115VAC outlet and the power

connector.

CML-12C32 MARCH 16, 2005

3. Verify the logic power source. Measure +5VDC between the GND and +5V connections

on the TB1 power connector. If the +VIN supply is present and the +5V output is not pres-

ent, immediately disconnect power from the board. Contact support@axman.com by

email for instructions; provide board name and problem.

4. Make sure that the RESET line is not being held low. Measure the voltage level at the

RESET* signal on the BUS_PORT connector.

5. Verify the communications port is working by substituting a known good serial device or by

doing a loop back diagnostic.

6. Ensure NO_AUTO jumper is installed. This will prevent any loaded program from execut-

ing at power-on or RESET.

7. Disconnect all external connections to the board except serial cable and the wall plug.

8. Verify the presence of a 16MHz clock signal at the EXTAL input pin.

9. Contact support@axman.com by email for further assistance. Provide board name and

describe problem.

Tips and Suggestions

Following are a number of tips, suggestions, and answers to commonly asked questions that

will solve many problem users have with the CML-12C32 development system. You can

download the latest software from the Support section of our web page at: www.axman.com

Utilities

• Make sure all jumpers are set correctly if trying to program memory or start the utilities.

• Make sure the serial cable is bi-directional and connected securely to both the PC and

the board.

• Make sure the serial cable is connected to the correct serial port.

• Make sure the power is supplied to the board. Only use a 9 volt, 200mA minimum wall

adapter, or DC power supply set to provide 9V output to the board. If applicable, make

sure the power strip is turned on.

• Make sure you load your code to an address space that actually exists. See the Mem-

ory Map if you’re not sure. MCU mode (single chip or expanded) changes the memory

map.

• If debugging under embedded monitor, make sure you're not over-writing reserved in-

ternal SRAM.

• If running in a multi-tasking environment (such as Windows) close all programs in the

background to reduce the potential for conflicts.

CML-12C32 MARCH 16, 2005

Code Execution

• Use the GO command to use breakpoints when executing under the monitor. Break-

points may not be acknowledged if the CALL command is used.

• If using Autostart, make sure program code is loaded at address $8000

• When running code stand-alone, initialize ALL peripherals used by the micro, including

the Stack, Serial Port, and pseudo Interrupt vectors, etc.

• Either reset the COP watchdog timer in the main program loop or disable it when not

running in monitor or BDM mode. The MCU may enable this by default and if not han-

dled properly the MCU will reset periodically.

LCD Codes

LCD Command Codes control the operation of the LCD panel. The table below gives each

command code, its effect, and its execution time.

LCD COMMAND CODES

Command Code Delay

Clear Display, Cursor to Home $01 1.65ms

Cursor to Home $02 1.65ms

Entry Mode:

Cursor Decrement, Shift off $04 40us

Cursor Decrement, Shift on $05 40us

Cursor Increment, Shift off $06 40us

Cursor Increment, Shift on $07 40us

Display Control:

Display, Cursor, and Cursor Blink off $08 40us

Display on, Cursor and Cursor Blink off $0C 40us

Display and Cursor on, Cursor Blink off $0E 40us

Display, Cursor, and Cursor Blink on $0F 40us

LCD Command Codes (continued)

Cursor / Display Shift: (nondestructive move)

Cursor shift left $10 40us

Cursor shift right $14 40us

Display shift left $18 40us

Display shift right $1C 40us

Display Function (default 2x40 size) $3C 40us

Character Generator Ram Address set $40-$7F 40us

Display Ram Address and set cursor location $80- $FF 40us

LCD Character Codes are the ASCII representations for the characters displayed on the LCD

panel. Many ASCII characters cannot be displayed and are used for other purposes. The ta-

ble below lists the ASCII codes that can be displayed and the corresponding character pro-

duced.

CML-12C32 MARCH 16, 2005

LCD Character Codes

$20 Space $30 0 $40 Time $50 P $60 ` $70 p

$21 ! $31 1 $41 A $51 Q $61 A $71 q

$22 “ $32 2 $42 B $52 R $62 B $72 r

$23 # $33 3 $43 C $53 S $63 C $73 s

$24 $ $34 4 $44 D $54 T $64 D $74 t

$25 % $35 5 $45 E $55 U $65 E $75 u

$26 & $36 6 $46 F $56 V $66 F $76 v

$27 ‘ $37 7 $47 G $57 W $67 G $77 w

$28 ( $38 8 $48 H $58 X $68 H $78 x

$29 ) $39 9 $49 I $59 Y $69 I $79 y

$2A * $3A : $4A J $5A Z $6A J $7A z

$2B + $3B ; $4B K $5B [ $6B K $7B {

, $3C { $4C L $5C Yen $6C L $7C |

- $3D = $4D M $5D ] $6D M $7D }

$2E . $3E } $4E N $5E ^ $6E n $7E >

$2F / $3F ? $4F O $5F _ $6F o $7F <

MON12 OPERATION

The following section describes the operation of the pre-loaded MON12 ASCII monitor. At

power-on or after RESET, the board will produce a text message at the connected terminal. If

no text message is produced, the board has been pre-loaded with a serial monitor. Refer to

Appendix A for details on the operation and functionality of the serial monitor.

Mon12 is an embedded monitor/debug utility that allows loading a compiled software program

(S-record) into Ram memory for testing and debug. The monitor may control the execution of

the software by using the SWI software interrupt service. Other features allow memory and

Communication with the monitor is provided through the MCU SCI0 serial port or COM port on

the development board. Default settings are 38.4 K bps with 8/n/1 bit settings. Flow control is

not provided so the host PC communication software should be set to None or Hardware flow

control. AxIDE utility software is recommended for use on a Windows based host PC.

The monitor relies on resources from the MCU target to provide the monitor environment. This

includes 16K bytes of flash memory and 512 bytes of internal ram memory. The user must re-

spect the monitor's memory map when using the monitor to help debug code. Restricted

memory areas:

Monitor Program space: 0xC000 - 0xFFFF Flash.

Monitor Data space: 0x0E00 - 0x0FFF, Internal Ram.

Monitor Console: COM Port and SCI0.

Monitor use redirects the interrupt vectors through a RAM based interrupt table, initializes the

SCI0 serial port, the MCU Flash and EPROM programming clock rates, the 8 MHz E-clock,

and detects auto-start enabled operation. The MCU memory map is fixed under monitor op-

CML-12C32 MARCH 16, 2005

eration.

AUTOSTART

The embedded Monitor supports Autostart to launch user application code at Reset. If the

NO_AUTO jumper is removed at power-on, the monitor executes program code located at

FLASH location $8000. If program code at $8000 fails to execute as expected, follow the trou-

bleshooting tips above to debug. The following steps illustrate how to execute user code out of

RESET or at power-on.

1. Relocate application code to address $8000.

2. Remove the No_Auto jumper

3. Apply power or press the RESET button.

MON12 Memory Map

ADDRESS TYPE MEMORY MEMORY APPLICATION Size

$0000 -

$03FF

MCU Registers Monitor or User access to control registers. 1K

bytes

$0400 -

$07FF

External Memory Expanded Mode Development Memory 1K

bytes

$0800 -

$0DFF

Internal RAM Internal RAM memory. 1.5K

bytes

$0E00 -

$0F8B

Internal RAM Monitor reserved ram memory. Stacks and

variables.

$0F8A -

$0FFF

Internal RAM Ram Interrupt Vector Table

512

bytes

$1000 -

$7FFF

External RAM Expanded Mode Data / Program Memory

Space

28K

bytes

$8000 -

$BFFF

FLASH EEPROM User Program Memory. User Autostart Pro-

gram Memory Space

16K

bytes

$C000 -

$FFFF

FLASH EEPROM Protected Monitor Space 16K

bytes

The monitor relocates hardware interrupt vectors in the monitor data space from 0x0F8A -

0x0FFF. The vectors are in the same order as the default hardware table for the MCU located

at address 0xFF8A - 0XFFFF (see table). The Reset vector is reserved, user should use Auto

Start for to start applications from Reset.

MON12 operation notes:

1. At startup, the CML-12C32monitor allows the user to select operating mode. Type “E” at

the prompt to select Expanded Mode operation, any other key selects Single-Chip opera-

tion.

2. The monitor application configures target MCU for 8MHz E-clock, lower flash block dis-

abled from memory map, and external access clock stretch set to 3 cycles. User can in-

crease clock speed in an application by modifying PLL control and setting new baud rate

for serial port. Defaults monitor setup returns when the MCU is Reset.

3. Mon12 will not trace into interrupts. To trace an interrupt service set a breakpoint in the

CML-12C32 MARCH 16, 2005

service routine and then trace.

4. Mon12 trace is limited to expecting the next linear address. Program counter modification,

branches, calls, or subroutines will not trace correctly.

5. Monitor start-up procedure:

A) Determine if Auto Start is enabled and execute code at address $8000.

B) Set Stack, Initialize memory map, and SCI0 port and send prompt.

C) Receive first character from Console port and execute monitor if ASCII text / command;

else start utility mode for programming services.

Mon12 Monitor Commands

BF <StartAddress> <EndAddress> [<data>] Block Fill memory range with data

BR [<Address>] Set/Display user breakpoints

CALL [<Address>] Call user subroutine at <Address>

GO [<Address>] Begin/continue execution of user code

HELP Display the Mon12 command summary

LOAD [P] Load S-Records into memory, P = Paged S2

MD <StartAddress> [<EndAddress>] Memory Display Bytes

MM <Address> Modify Memory Bytes (8 bit values)

MW <Address> Modify memory Words (16 bit values)

MOVE <StartAddress> <EndAddress> <DestAd-

dress>

Move a block of memory

RD Display all CPU registers

OFFSET – [arg] Offset for download

Proceed Continue program execution

RM Modify CPU Register Contents

STOPAT <Address> Trace until address

T [<count>] Trace <count> instructions

Items in Italics are not implemented at this time.

CML-12C32 MARCH 16, 2005

Monitor Utility Jump Table

ADDRESS

FF10 JMP MAIN warm start

FF13 JMP BPCLR clear breakpoint table

FF16 JMP RPRINT display user registers

FF19 JMP HEXBIN convert ascii hex char to binary

FF1C JMP BUFFARG build hex argument from buffer

FF1F JMP TERMARG read hex argument from terminal

FF22 JMP CHGBYT modify memory byte at address in x

FF25 JMP CHGWORD modify memory word at address in x

FF28 JMP READBUFF read character from buffer

FF2B JMP INCBUFF increment buffer pointer

FF2E JMP DECBUFF decrement buffer pointer

FF31 JMP WSKIP find non-whitespace char in buffer

FF34 JMP CHKABRT check for abort from terminal

FF37 JMP UPCASE convert to upper case

FF3A JMP WCHEK check for white space

FF3D JMP DCHEK check for delimeter

FF40 JMP ONSCI0 initialize i/o device

FF43 JMP INPUT low level input routine

FF46 JMP OUTPUT low level output routine

FF49 JMP OUTLHLF display top 4 bits as hex digit

FF4C JMP OUTRHLF display bottom 4 bits as hex digit

FF4F JMP OUTA output ascii character in A

FF52 JMP OUT1BYT display the hex value of byte at X

FF55 JMP OUT1BSP out1byt followed by space

FF58 JMP OUT2BSP display 2 hex bytes (word) at x and a space

FF5B JMP OUTCRLF carriage return, line feed to terminal

FF5E JMP OUTSTRG display string at X (term with $04)

FF61 JMP OUTSTRG0 outstrg with no initial cr

FF64 JMP INCHAR wait for and input a char from term

FF67 JMP VECINIT initialize RAM vector table

MON12 Interrupt Support

All interrupt services under MON12 are provided through the ram vector table, see the table

below. Each location in the table is initialized to a value of $0000 to cause the trap of an un-

scheduled interrupt. Any nonzero value will allow the interrupt to proceed to the user's service

routine that should be located at the provided address value. Interrupt service delay is plus 21

cycles over standard interrupt service.

To use vectors specified in the table, the user must insert the address of the interrupt service routine during soft-

ware initialization into the ram interrupt table. For an example, for the IRQ vector, the following is performed:

Example: IRQ Service routine label = IRQ_SRV

Ram Vector Table address is defined in table below, IRQ vector definition:

VIRQ EQU $0FF2 ; define ram table vector location

Place IRQ service routine address in the table:

MOVW #IRQ_SRV,VIRQ

This vector initialization should remain after debug when auto start will launch the user's appli-

cation. Note that the user interrupt service routines must be located in the $4000 - $7FFF ad-

dress range for correct operation. See Autostart for more details.

CML-12C32 MARCH 16, 2005

Monitor Interrupt Vector Table

MON12 Ram Interrupt

Vector

MCU Interrupt Vector

Address

MON12

TRAP code

Vector

Source

0F8A FF8A 02 LVI

0F8C FF8C 04 PWME

0F8E FF8E 06 PTPI

0F90 FF90 08 C4TX

0F92 FF92 0A C4RX

0F94 FF94 0C C4ERR

0F96 FF96 0E C4WU

0F98 FF98 10 C3TX

0F9A FF9A 12 C3RX

0F9C FF9C 14 C3ERR

0F9E FF9E 16 C3WU

0FA0 FFA0 18 C2TX

0FA2 FFA2 1A C2RX

0FA4 FFA4 1C C2ERR

0FA6 FFA6 1E C2WU

0FA8 FFA8 20 C1TX

0FAA FFAA 22 C1RX

0FAC FFAC 24 C1ERR

0FAE FFAE 26 C1WU

0FB0 FFB0 28 C0TX

0FB2 FFB2 2A C0RX

0FB4 FFB4 2C C0ERR

0FB6 FFB6 2E C0WU

0FB8 FFB8 30 FEPRG

0FBA FFBA 32 EEPRG

0FBC FFBC 34 SPI2

0FBE FFBE 36 SPI1

0FC0 FFC0 38 I2C

0FC2 FFC2 3A BDLC

0FC4 FFC4 3C CRGC

0FC6 FFC6 3E CRGL

0FC8 FFC8 40 PACBO

0FCA FFCA 42 MCNT

0FCC FFCC 44 PTHI

0FCE FFCE 46 PTJI

0FD0 FFD0 48 ADC1

0FD2 FFD2 4A ADC0

0FD4 FFD4 4C SCI1

0FD6 FFD6 4E SCI0

0FD8 FFD8 50 SPI0

0FDA FFDA 52 PACAI

0FDC FFDC 54 PACAO

0FDE FFDE 56 TOF

0FE0 FFE0 58 TC7

0FE2 FFE2 5A TC6

0FE4 FFE4 5C TC5

0FE6 FFE6 5E TC4

0FE8 FFE8 60 TC3

0FEA FFEA 62 TC2

0FEC FFEC 64 TC1

0FEE FFEE 66 TC0

0FF0 FFF0 68 RTI

0FF2 FFF2 6A IRQ

CML-12C32 MARCH 16, 2005

MON12 Interrupt Table (continued)

0FF4 FFF4 6C XIRQ

0FF6 FFF6 6E SWI

0FF8 FFF8 70 TRAP

0FFA FFFA 72 COP

0FFC FFFC 74 CLM

0FFE FFFE 76 RESERVED

BDM OPERATION

BDM operation on the CML-12C32 board emulates supported HC(S)12 internal flash memory

in external ram. This feature allows BDM’s (Background Debug Modules) such as the AX-

BDM12 to load and control the execution of code being developed without the necessity of the

internal flash memory being programmed repeatedly during the development process. This

feature improves update time and allows the use of software breakpoints instead of being lim-

ited to only 2 hardware breakpoints.

Operation Notes for BDM use:

1) The BDM initialization of the HC12 should set the correct operating MODE (expanded-

wide for external memory access). The LSTRB, RW, ROMEN, and Stretch configuration

bits should be set for proper external memory access operation. The Axiom support CD

contains sample set-up macros for the USB_BDM.

2) While using the BDM, the user has full control over the memory map and hardware re-

sources of the HCS12. No MCU resources are reserved for monitor use and the MCU

interrupt vector table, located at 0xFF8C - 0xFFFF, may be used.

CML-12C32 MARCH 16, 2005

APPENDIX A

HCS12 SERIAL MONITOR OPERATION

This CML-12C32 contains the HCS12 Serial Monitor instead of the MON12 monitor mentioned

in the User Guide. This addendum provides a brief description of this serial monitor program.

Further details may be found in Application Note AN2548 from Freescale Semiconductor. This

board also contains a small demo program that flashes LED1 and LED2 has been loaded to

simulate application code startup.

The 2K byte serial monitor program provides RS-232 serial interface to a host PC. The moni-

tor is compatible with Metrowerks CodeWarrior and other serial monitor interface IDE’s. It is

not compatible with ASCII interface programs such as hyperterm or AxIDE. The monitor sup-

ports 23 primitive commands to control the target MCU. To allow a user to specify the address

of each interrupt service routine, this monitor redirects interrupt vectors to an unprotected por-

tion of FLASH just before the protected monitor program.

The monitor uses the SCI0 serial interface to communicate with the host PC. The monitor

must have exclusive use of the serial port to work correctly. This monitor accommodates RS-

232 serial communications through SCI0 at 115.2 K bps.

SERIAL MONITOR MEMORY MAP

0x0000 –

0x03FF

Registers

0x3800 –

0x3FFF

Internal RAM

0x8000 –

0xBFFF

Fixed Flash EEPROM Block 1

(visible at RESET)

16K bytes

0xC000 –

0xF6FF

Fixed Flash EEPROM Block 2

0xF780 –

0xF7FF

User Vectors(Relocated)

User Reset Vector F7FE:F7FF

0xF800 –

0xFFFF

Vectors

(Protected)

16K bytes

NOTE: Although the monitor does not support external memory,

the user can enable external memory accesses in the

unfilled areas of the memory map.

CONFIGURATION

The CML-12C32 boots to user application code out of RESET if the pseudo-reset vector

(F7FE:F7FF) is programmed. A small demo program in flash LED1 and LED2 has been pre-

loaded at the factory. To boot to the serial monitor, simply press and hold SW1 while applying

power or pressing the RESET button. The CML-12C32 will also boot to monitor mode if the

pseudo-reset vector is not programmed. Pressing SW1 after user application code executes

has no effect.

CML-12C32 MARCH 16, 2005

APPENDIX B

BILL OF MATERIALS

Item Qty Title Ref(m) Mfr Mfr-P/N

Top BOM, CML12C32, AXM-0324

1 2 Cap, Mon, 22pF, 50V, 0805 C1, C2 NIC NMC08NP0220J50M

2 3 Cap, Mon, .01uF, 50V, X7R, 5%, 0805 C4, C9, C12 Meritek MA0805XR103K500

3 15 Cap, Mon, .1uF, 50V, 0805 C3, C5, C6, C10, C19, C21, C22,

C23, C24, C25, C26, C27, C28,

C29, C30

Meritek MA080525U104M500

4 5 Cap, Mon, 1uF, 16V, 0805 C14, C15, C16, C17, C18

5 4 Cap, Tant, 10uF, 10V, SMA C7, C8, C11, C20 Avx TAJA106K010R

6 1 Cap, Mon, 4700pF, 0805 Cx1 Kemet C0805C472K5RACTU

7 1 Cap, Mon, 470pF, 50V, 5%, 0805 Cx2 Kemet C0805C471J5GAC7025

8 16 Res, Carbon, 10K ohm, 5%, 0805 R3, R6, R7, R10, R11, R12, R14,

R16, R17, R18, R19, R20, R23,

R24, R25, R26

9 1 Res, Carbon, 100 ohm, 5%, 0805 R22

10 2 Res, Carbon, 4.7K ohm, 5%, 0805 R28, R29

11 4 Res, Carbon, 1K ohm, 5%, 0805 R9, R13, R15, R27

12 2 Res, Carbon, 0 ohm, 5%, 0805 R1, R21

13 1 Res, Carbon, 10M 0hm, 5%, 0805 R2

14 1 Res, Carbon, 5.1k ohm , 5%, 0805 Rx1

15 1 Res, Pot, 10k ohm, Thru, Top Adj RV1

16 0 Res, Do Not Install RC11, RC12, RC13

17 2 Diode, Schottky, 30V, 200mA, BAT54C, Com. Cathode, SOT23 D1, D2, Vishay Bat54C

18 1 Diode, Rect, S1A, 1A, 50V, D0214AC D4

19 1 Diode, Trans. Sup., 5.0V, 600W, DO214AA, SMBJ5.0CA D3 STM SMBJ5.0CA

20 3 LED, Green, w/reflector, 1206, SMT Pwr, LED1, LED2 Rohm SML-010MTT86

21 1 LED, Red, w/reflector, 1206, SMT Reset Rohm SML-010LTT86

22 1 Ind, 10uH, 1210, SMT L1 Vishay IMC1210SY100K

23 1 Xtal, Quartz, 16.00MHz, HC49-US, 20pF, SMT Y1 Ecs Int'l. ECS-160-20-5P-TR

24 1 VReg, LDO, 5.0V, 250mA, D-Pak (TO-252) VR1 STM L4931CDT50

25 1 Lvl Det, 5V, 40mA, 5%, Open Drain, SOT23-3, DS1813 LV1 Dallas

Semiconductor

DS1813R-5

CML-12C32 MARCH 16, 2005

Bill of Materials (continued)

26 1 IC, MCU, MC9S12C32, 16 MHz, 80QFP U1 Motorola MC9S12C32CFU16

27 2 IC, SRAM, 32K byte, 70ns, 28SOIC, CY62256-70SNC U3, U4 Cypress CY62256L-70SNC

28 1 IC, Dual 8b Latched Register, 48SSOP, 74FCT16374A U2 IDT 74FCT16374ATPV

29 1 IC, 8b Shift Reg, Latch, 74HC595, 16SOIC U6 STM M74HC595B1R

30 2 IC, Quad 2 Input NAND, 14 SOIC, 74ACT00 U9, U10 Fairchild 74ACT00M

Intersil HIN202CBN31 1 IC, Dual RS232 XCVR, 5V, 16SOIC U7

Sipex SP202ECN

32 1 IC, CAN XCVR, 82C250, SO8, PCA82C250TD U8 Philips PCA82C250TD-T

33 3 Sw, PB, 5mm Sq, Thru SW1, SW2, RESET

34 1 Conn, Term Block, 3.55mm, 3Pos, Thru TB1

35 1 Conn, 2mm, Pwr Jack, Barrel, Thru, RA J1

36 1 Conn, Dsub, 9P, F, RA, PCB Mount COM1

37 1 Conn, 1x1 Pin Header, .1" Ctr, Thru GND

38 2 Conn, 1x2 Pin Header, .1" Ctr, Thru RANGE, J2

39 1 Conn, 1x3 Pin Header, .1" Ctr, Thru JP1

40 1 Conn, 1x4 Pin Header, .1" Ctr, Thru Can-Port

41 1 Conn, 1x8 Pin Header, .1" Ctr, Thru Keypad

42 2 Conn, 2x2 Pin Header, .1" Ctr, Thru NO_AUTO, MEM_EN

43 1 Conn, 2x7 Pin Header, .1" Ctr, Thru LCD PORT

44 1 Conn, 2x3 Pin Header, .1" Ctr, Thru Bdm_Port

45 1 Conn, Hdr, Socket, 2x30, .1", Thru MCU_PORT

46 1 Conn, Hdr, Socket, 2x14, .1", Thru BUS_PORT

47 3 Hdw, Shunt, 2 Pos, .1"

48 4 Hdw. Rubber Bumper, .45"x.2", Hemisphere

49 1 Hdw, Proto Board, 3.3"x 1.8" E-Call 165-40-3010

50 1 PCB, CML12C32 Board