TWR-56F8257
User Manual
Document Number: TWR56F8257UM
REV 1
Microcontroller Solutions Group
Rev. 0.02
2 TWR-56F8257 User Manual Freescale Semiconductor, Inc.
Contents
Overview ................................................................................................3
1.1 Block Diagram ..............................................................................4
1.2 Reference Documents ..................................................................4
Hardware Features ...............................................................................5
2.1 Tower MCU Module .....................................................................5
2.2 System Power ..............................................................................5
2.2.1 P5V_USB .............................................................................5
2.2.2 P3_3V ..................................................................................5
2.2.3 P3_3V/5V .............................................................................6
2.2.4 Default Power Configuration ...............................................6
2.3 MC56F8257 DSC .........................................................................6
2.3.1 Clock Sources for the MC56F8257 DSC ............................6
2.3.2 Serial I/O Source Select Headers .......................................7
2.3.3 LEDs Controlled by the MC56F8257 DSC .........................8
2.3.4 Motor Control Connector ....................................................8
2.3.5 Auxiliary Connector .............................................................9
2.3.6 Tower Elevator Connectors .................................................9
2.3.7 Thermistors as Analog Inputs .............................................9
2.3.8 CAN Transceiver ...............................................................10
2.3.9 IRQ or Input Push Buttons ................................................10
2.3.10 RESET .............................................................................10
2.3.11 JTAG Header and OSBDM Disconnect Header .............10
2.4 OSBDM ......................................................................................11
2.4.1 Debug Interface ................................................................11
2.4.2 USB Serial Bridge Interface ..............................................11
2.4.3 Clocking the OSBDM MCU (MC9S08JM60) ....................11
2.4.4 OSBDM/UART Function Select Header ...........................11
2.4.5 Bootloader Enable ............................................................11
2.4.6 BDM Header .....................................................................12
2.4.7 OSBDM Status LEDs ........................................................12
2.4.8 OSBDM Voltage Translation ..............................................12
Jumper Table ......................................................................................13
Appendix A: Tower Elevator Connector Pin Functions ..................14
Appendix B: TWR-56F8257 Board Schematic .................................16
Appendix C: TWR-56F8257 Board BOM ...........................................20
3TWR-56F8257 User ManualFreescale Semiconductor, Inc.
Overview
The MC56F8257 Tower MCU module (TWR-56F8257) is a cost-effective evaluation, demonstration and development board. The
TWR-56F8257 can operate stand-alone or as the main control board in a Tower System with peripheral modules. It can also be used as the
main control board with an APMOTOR56F8000E motor control board.
The following list summarizes the features of the TWR-56F8257:
• Tower-compatible microcontroller module
• Selectable power sources:
USB
Barrel connector
Motor control board
Tower elevator board
• Filtered power for VDDA and VSSA on the MC56F8257DSC
• MC56F8257 digital signal controller (DSC) in an 64 LQFP package
• Optional 8 MHz crystal circuit for the MC56F8257 DSC
• Nine LEDs controlled by the MC56F8257 DSC
• Motor control board connector for the APMOTOR56F8000E motor control board
• Auxiliary signal connector
• Four thermistors for single-ended or differential analog inputs to the MC56F8257 DSC
• CAN transceiver, header and termination
• Two push buttons for user input or interrupts to the MC56F8257 DSC
• Reset push button for the MC56F8257 DSC
• JTAG header for the MC56F8257 DSC with header to disconnect from OSBDM
• Headers to connect SCI signals to either USB bridge or elevator board
• Expansion via primary elevator connector
• MC9S08JM60 MCU with a 4 MHz crystal provides:
Open source debug (OSBDM) circuit
USB to SCI bridge
Header to select between OSBDM and USB to SCI bridge functions
Bootloader enable header
BDM header for the MC9S08JM60 MCU
Status and target power indicator LEDs
Control of semiconductor switch to enable power to board from USB
Voltage translators between 5V MC9S08JM60 MCU chip and 3.3V MC56F8257 DSC chip
4 TWR-56F8257 User Manual Freescale Semiconductor, Inc.
1.1 Block Diagram
TWR-56F8257 Block Diagram
Tower Elevator Expansion Connectors
(SPI, I2C, ADC, FEC, TPM, SCI, KB, etc.)
5.0V
3.3V
MC56F8257
Digital Signal Controller
Motor Control and
Aux Connectors
5V–9V
Barrel Power Connector
Power Selection HDRs
Voltage Regulator
OSBDM
(MC9S08JM60 MCU
Debug, Power,
SCI Headers)
BDM
Header
Freescale Device External Connectors Interface Circuits Power
• LEDs and Buffers (9)
• IRQ PB and HDRs (2)
• RESET PB
• Thermistors and HDRs (4)
• Analog Filters
• Microphone (optional)
• CAN XCVR and HDR
JTAG
Header
OSBDM Enable
and Boot
Load HDRs
3.3V
USB
Mini-AB
5.0V
Voltage
Translators
Figure 1. TWR-56F8257 Block Diagram
1.2 Reference Documents
The documents listed below should be referenced for more information on the Freescale Tower System and the TWR-56F8257. Refer to
freesale.com/Tower for the latest Tower documentation.
• Freescale Tower Electromechanical Specification
• TWR-56F8257 Quick Start Guide
• TWR-56F8257 Lab Tutorials
• MC56F825X Reference Manual
• MC56F825X Data Sheet
• MC56F825X Chip Errata
• AN3561, USB Bootloader for the MC9S08JM60
• Serial Bootloader for MC56F825x User Guide
• APMOTOR56F8000e Motor Control Demonstration System User Manual
5TWR-56F8257 User ManualFreescale Semiconductor, Inc.
Hardware Features
This section provides details about the features and functionality of the TWR-56F8257. Figure 2 illustrates the primary features of the
TWR-56F8257. (Not seen are the buffer, multiplexor, inverters, USB power switch, and the CAN transceiver ICs as well as the motor control
and auxiliary connectors which are on the back of the board.) Each feature is discussed below.
Thermistor
RT1 and Header
3.3V Regulator
5V–9V Power
in Connector
3.3V and 5V Source
Select Headers
UART Connection
Select Headers
CAN Connector
Mini-B USB
Connector
CAN Disconnect
and Termination
Headers
Thermistor
RT4 and Header
Secondary Tower
Connector
Primary Tower
Connector
LEDs
Thermistor
RT2 and Header
IRQ PBs
and Headers
JTAG Header
RESET PB
OSBDM/UART
Target Power LEDs
Thermistor
RT3 and Header
OSBDM
Disconnect
OSBDM/UART
Select Header
OSBDM MCU (MC9S08JM60)
MC56F8257 DSC
2.1 Tower MCU Module
The TWR-56F8257 board is an MCU module designed for use with a Freescale Tower System and complies with the electrical and
mechanical specification as described in Freescale Tower Electromechanical Specification. Connection to the Tower System is enabled
through two expansion card edge connectors that interface to the elevator boards in a Tower System: the primary and secondary elevator
connectors. The primary elevator connector, comprised of sides A and B, is utilized by the TWR-56F8257, while the secondary elevator
connector only makes connections to ground (GND). On sheet 7 of the schematic, the J500A and J500B symbols have names assigned to
the card edge fingers that correspond with the normal Tower pin assignments. The pin out details for the TWR-56F8257 can be found in the
TWR-56F8257 Module Pin out document.
2.2 System Power
The TWR-56F8257 board contains three power rails: P5V_USB, P3_3V and P3_3V/5V. They are sourced and used as follows:
Figure 2. TWR-56F8257 Board
6 TWR-56F8257 User Manual Freescale Semiconductor, Inc.
2.2.1 P5V_USB
The P5V_USB power rail is derived from the Mini-B USB connector at J18 and the inductor at L2. It is used to power the on-board OSBDM/
serial bridge circuit. This consists of the OSBDM MCU at U6, several pull-up resistors at R13, R14, R15, R527 and R528, the USB power
switch at U501, and the STATUS and TPWR LEDs at D12 and D13. If there is no USB cable connected to J18 there is no power on this rail
and these circuits are all powered down.
2.2.2 P3_3V
The P3_3V power rail is derived from a) the P3_3V_MOTOR power net from the motor control board connector at J501, b) the P3_3V_ELEV
power net from the Tower connector at J500A, or c) the on-board 3.3V regulator at U1. The selection of the source is made with a shunt at
J6 and J7. Table 6 shows the operation of the different shunt positions. The selection of power into the regulator is made with a shunt at J10
and J11 which selects from a) the P5V_TRG_USB power net out of the USB switch at U501, b) the P5V_ELEV power net from the elevator
connection at J500A pins A1 and B1, or c) the PWR_IN power net from the 2 mm barrel jack at J3 through resettable fuse F1. Table 6 shows
the operation of the different shunt positions. The barrel jack input is protected from reverse voltage inputs by diode D11. The input to the
barrel jack may be from a 5V to 9V source and must be center positive.
The P3_3V power rail provides power to the majority of the circuits on the board including the MC56F8257 (including the analog power pins
through L500 and L501), inverters at U500 and U502, a multiplexor at U505, the on-board LEDs at D1-D9, the thermistor divider circuits at
RT1-RT4, and the pull-up resistors at R2, R3, R11, R565, R570 and R562.
2.2.3 P3_3V/5V
The P3_3V/5V power rail is derived from the diode OR (using D500 and D501) of a) the P5V_ELEV power net from the elevator connection
(J500A pins A1 and B1), b) the P5V output of the USB power switch at U501, or c) the P3_3V power rail from J7. When there is a USB cable
connected or when the Tower elevator boards are connected this power rail will be a Schottky diode drop (about 0.3V) below the 5V power
nets. When there is no 5V source this power rail will be a Schottky diode drop below the P3.3V power rail. This allows the inputs of the
ICs powered by this rail to stay in a high impedance state instead of loading down the inputs through the input protection diodes as would
happen if there were no power supplied to the buffers.
2.2.4 Default Power Configuration
The TWR-56F8257 board default power configuration uses the OSBDM USB port for all power. As soon as the OSBDM firmware has started
it negotiates with the host PC USB port for full USB power. Once approved it enables the 5V USB power switch (U501) which provides 5V to
the P3_3V/5V power rail and to the 3.3V regulator (U1) through headers J10 and J11. Likewise, the on-board voltage regulator provides 3.3V
to the P3_3V power rail through headers J6 and J7. The 3.3V regulator is able to provide up to 700 mA subject to the power dissipation and
temperature limits of the device.
2.3 MC56F8257 DSC
The primary circuits on the board are related to the MC56F8257 DSC. This part is supplied in a surface-mounted, 64-pin LQFP package at
U2. Although the board was laid out to allow a ZIF socket at U3 in parallel to the chip at U2, the TWR-56F8257 is only available with the
surface mounted chip.
2.3.1 Clock Sources for the MC56F8257 DSC
Three options are provided for clocking the MC56F8257 device:
1. Oscillator internal to the MC56F8257 chip: approximately 8 MHz
2. 8 MHz crystal
3. External clock input from primary Tower connector or the AUX connector
The internal oscillator is used to clock the MC56F8257 immediately following reset. This is the default operation. In this mode the zero ohm
resistors at R4 and R10 allow the GPIOC0 and GPIOC1 pins of the MC56F8257 (pins 3 and 4) to be used as inputs or outputs.
7TWR-56F8257 User ManualFreescale Semiconductor, Inc.
To use an external crystal with the MC56F8257, zero ohm resistors R4 and R10 must be removed and placed in the R5 and R7 positions.
The desired crystal, load capacitors and parallel resistor (if needed) must be soldered to the board at Y1, C5, C6 and R6. (These components
are not provided with the TWR-56F8257 kit.) Following reset, reconfigure the GPIOC0 and GPIOC1 pins to the XTAL and EXTAL functions to
allow the use of an external crystal.
To use an external clock for the MC56F8257, make sure the zero ohm resistors are installed at R4 and R10 and removed from R5 and R7.
Provide a clock signal on either the primary Tower connector J500A, pin B24 (the pin designated as CLOCKIN0) or on the AUX connector
J502, pin 8. Following reset, configure the GPIOC0 pin to the CLKIN input function. In this mode the zero ohm resistor at R10 allows the
GPIOC1 pin of the MC56F8257 (pin 10) to be used as an input or output.
2.3.2 Serial I/O Source Select Headers
The TWR-56F8257 board allows the UART functions of the MC56F8257 DSC to be connected to a serial interface at the primary Tower
connector J500A or through a USB bridge to the host PC using the OSBDM MCU (U6). The selection of the RXD connections is done with
the header at J8 as shown in Table 1. The selection of the TXD connections is done with the header at J9 as shown in Table 2.
Table 1. J8 – RXD Source Select Header
J8 – RXD Source Select Header
Pin # Connected Signal Description
1 ELEV_RXD0 at J500A pin A41 Shunt pins 1 and 2 together to connect the DSC RXDO pin to the primary Tower connector
RXD0 pin. (This is a default position.)
2 GPIOF8/RXD0/TB1 from the 56F8257 DSC – pin 6 (RXD0 function)
3 RXD_SEL from the USB bridge function on the OSBDM MCU Shunt pins 2 and 3 together to connect the DSC RXD0 pin to the USB serial bridge function.
Shunt pins 3 and 4 together to connect the DSC RXD1 pin to the USB serial bridge function.
4 GPIOF5/RXD1/XB_OUT5 from the 56F8257 DSC – pin 42
(RXD1 function)
5 ELEV_RXD1 at J500A pin A43 Shunt pins 4 and 5 together to connect the DSC RXD1 pin to the primary Tower connector
RXD1 pin. (This is a default position.)
Table 2. J9 – TXD Source Select Header
J9 – RXD Source Select Header
Pin # Connected Signal Description
1 ELEV_TXD0 at J500A pin A42 Shunt pins 1 and 2 together to connect the DSC TXDO pin to the primary Tower connector
TXD0 pin. (This is a default position.)
2 GPIOC2/TXD0/TB0/XB_IN2/CLKO from the 56F8257 DSC – pin 5
(TXD0 function)
3 TXD_SEL to the USB bridge function on the OSBDM MCU Shunt pins 2 and 3 together to connect the DSC TXD0 pin to the USB serial bridge function.
Shunt pins 3 and 4 together to connect the DSC TXD1 pin to the USB serial bridge function.
4 GPIOF4/TXD1/XB_OUT4 from the 56F8257 DSC – pin 41
(TXD1 function)
5 ELEV_TXD1 at J500A pin A44 Shunt pins 4 and 5 together to connect the DSC TXD1 pin to the primary Tower Connector
TXD1 pin. (This is a default position.)
As noted in Tables 1 and 2, the 56F8257 DSC serial signals may be connected to either the Tower serial signals or to the USB bridge chip
however, only one channel may be connected to the USB bridge chip. If the associated 56F8257 DSC serial pins are not being used for the
serial functions the shunts should be removed for those pins. For more information on the USB serial bridge function see section 2.4.2 USB
serial bridge interface.
8 TWR-56F8257 User Manual Freescale Semiconductor, Inc.
2.3.3 LEDs Controlled by the MC56F8257 DSC
There are nine LEDs with buffers connected to the MC56F8257 DSC. Inverting buffers (U500A-F and U502D-F) isolate the LEDs from the
DSC pins by providing high impedance inputs. The LEDs are powered by the P3_3V rail and draw about 5 mA each. Table 3 shows the DSC
pin names associated with each LED.
Table 3. LEDs Controlled by the MC56F8257 DSC
LEDs Controlled by the MC56F8257 DSC
MC56F8257 DSC
Pin Name
MC56F8257
Pin Number
LED
Reference
LED Label LED Color
GPIOE0/PWM0B 45 D1 E0 Green
GPIOE1/PWM0A 46 D2 E1 Yellow
GPIOE2/PWM1B 47 D3 E2 Green
GPIOE3/PWM1A 48 D4 E3 Yellow
GPIOE4/PWM2B/XB_IN2 51 D5 E4 Green
GPIOE5/PWM2A/XB_IN3 52 D6 E5 Yellow
GPIOE6/PWM3B/XB_IN4 53 D7 E6 Green
GPIOE7/PWM3A/XB_IN5 54 D8 E7 Yellow
GPIOF6/TB2/PWM3X 58 D9 F6 Amber
2.3.4 Motor Control Connector
The TWR-56F8257 board may be connected to a motor control board such as the APMOTOR56F8000E. The motor control connector (J501)
is on the bottom of the board to provide a convenient connection to the motor control board. For convenience, the pins of the motor control
connector may be probed from the top of the board.
Many of the MC56F8257 DSC pins are connected to the motor control connector. Those pins associated with analog inputs have 100 ohm
resistors in series to provide some ESD protection for the analog inputs of the DSC. Those pins providing analog signals from the motor
control board have 2200 pf caps with the resistors to provide a low pass filter. The connector pin out is shown in Table 4.
Table 4. Motor Control Connector Pin Out 2.2.5 Auxiliary Connector
Motor Control Connector J501 Pin Out
Pin # MC56F8257 DSC Signal Pin # MC56F8257 DSC Signal
1 P3_3V_MOTOR 2 GPIOB7/ANB7&CMPB_M2 (With 100 ohms in series)
3 GND 4 GPIOD4/RESET_B (With 0 ohms in series. Remove to isolate)
5 GPIOF4/TXD1/XB_OUT4 6 GPIOA3/ANA3&CMPA_M2 (With 100 ohms in series)
7 GPIOF3/SDA1/XB_OUT3 8 GND
9 GPIOE1/PWM0A 10 GPIOA0/ANA0&VREFHA&CMPA_P2/CMPC_O (With 100 ohm, 2200 pf low pass filter)
11 GPIOE0/PWM0B 12 GPIOA1/ANA1&VREFLA&CMPA_M0 (With 100 ohm, 2200 pf low pass filter)
13 GPIOC3/GC3 TA0/CMPA_O/RXD0 14 GPIOA2/ANA2&CMPA_M1 (With 100 ohm, 2200 pf low pass filter)
15 GPIOC13/TA3/XB_IN6 16 GND
17 GPIOC4/TA1/CMPB_O 18 GPIOB0/ANB0&VERFHB&CMPB_P2 (With 100 ohm, 2200 pf low pass filter)
19 GPIOC6/TA2/XB_IN3/CMP_REF 20 GPIOB1/ANB1&VERFLB&CMPB_M0 (With 100 ohm, 2200 pf low pass filter)
21 GPIOC15/SCL0/XB_OUT1 22 GPIOB2/ANB2&CMPC_P2 (With 100 ohm, 2200 pf low pass filter)
23 GPIOC14/SDA0/XB_OUT0 24 GND
25 GPIOD0/TDI 26 GPIOE7/PWM3A/XB_IN5
27 GPIOD1/TDO 28 GPIOE6/PWM3B/XB_IN4
29 GPIOD2/TCK 30 GPIOE3/PWM1A
31 GPIOD3/TMS 32 GPIOE2/PWM1B
33 GPIOB3/ANB3&CMPC_M0 (With 100 ohms in series) 34 GPIOE5/PWM2A/XB_IN3
35 GPIOB4/ANB4&CMPC_M1 (With 100 ohms in series) 36 GPIOE4/PWM2B/XB_IN2
37 GPIOB5/ANB5&CMPC_M2 (With 100 ohms in series) 38 GPIOA4/ANA4 (With 100 ohms in series)
39 GPIOB6/ANB6&CMPB_M1 (With 100 ohms in series) 40 GPIOA5/ANA5 (With 100 ohms in series)
9TWR-56F8257 User ManualFreescale Semiconductor, Inc.
2.3.5 Auxiliary Connector
In addition to the motor control connector, the TWR-56F8257 board also provides an auxiliary connector (J502) on the bottom of the board.
This connector provides access to the MC56F8257 DSC signals that are not covered by the motor control connector. Those pins associated
with analog inputs have 100 ohm resistors in series to provide some ESD protection for the analog inputs of the DSC. The connector pin out
is shown in Table 5.
Table 5. Auxiliary Connector J502 Pin Out
Auxilliary Connector J502 Pin Out
Pin # MC56F8257 DSC Signal Pin # MC56F8257 DSC Signal
1 GPIOF0/XB_IN6 2 GPIOA6/ANA6 (With 100 ohms in
series)
3 GPIOF1/CLKO/XB_IN7 4 GPIOA7/ANA7 (With 100 ohms in
series)
5 GPIOF2/SCL1/XB_OUT2 6 GND
7 GPIOF5/RXD1/XB_OUT5 8 GPIOC0/XTAL&CLKIN
9 GPIOF6/TB2/PWM3X 10 GPIOC1/EXTAL
11 GPIOF7/TB3 12 GPIOC2/TXD0/TB0/XB_IN2/CLKO
13 GPIOF8/RXD0/TB1 14 GPIOC5/DACO/XB_IN7
15 GPIOC11/CANTX/SCL1/TXD1 16 GPIOC7/SS_B/TXD0
17 GPIOC12/CANRX/SDA1/RXD1 18 GPIOC8/MISO/RXD0
19 GND 20 GPIOC9/SCK/XB_IN4
21 No Connection 22 GPIOC10/MOSI/XB_IN5/MISO
23 No Connection 24 No Connection
25 No Connection 26 No Connection
2.3.6 Tower Elevator Connectors
The TWR-56F8257 board features two expansion card edge connectors that interface to elevator boards in a Tower System: the primary and
secondary elevator connectors. The primary elevator connector, comprised of sides A and B, is utilized by the TWR-56F8257 board, while
the secondary elevator connector only makes connections to ground (GND). Table 7 in Appendix A: Tower Elevator Connector Pin Functions,
lists the pin functions for the primary elevator connector.
2.3.7 Thermistors as Analog Inputs
The TWR-56F8257 board provides four thermistors (RT1-4) near the corners of the board that can be used as single ended or differential
analog inputs to the MC56F8257 DSC as can be seen on sheet 6 of the schematic. In addition to each thermistor there is a resistor
between the thermistor and P3_3V and another resistor between the thermistor and ground. The thermistors are all 10K ohm parts but the
associated divider chain uses different resistors. This may increase or decrease the voltage across the thermistor and provides the ability to
try the different gain settings on the analog channels. All four thermistor circuits are designed to provide useable differential inputs over the
temperature range of -20˚C to +90˚C. RT2 and RT4 both give a differential voltage of ~1.65V at 25˚C. RT1 gives a differential voltage of 0.10V
and RT3 gives a differential voltage of 0.28V at 25˚C.
In addition to the thermistor voltage divider chain, each thermistor has a 0.1 uF capacitor in parallel. Each thermistor circuit also has a
header that allows the thermistor to be disconnected from the analog inputs to the DSC. If a user wishes to apply an external analog value,
these headers may be removed and the external analog signal attached to the DSC side of the headers. Finally, each analog input to the
DSC has a 100 ohm series resistor and a 2200 pF capacitor as a low pass filter. This helps protect the DSC from electrostatic discharges
and lowers the impedance of the analog signal so that it can be sampled with less noise.
10 TWR-56F8257 User Manual Freescale Semiconductor, Inc.
2.3.8 CAN Transceiver
The TWR-56F8257 board has a CAN transceiver circuit that may be connected to the CAN pins of the DSC. The CAN transceiver (U503) can
be connected to the GPIOC11/CANTX/SCL1/TXD and GPIOC12/CANRX/SDA1/RXD1 pins of the DSC through the header at J16. Installing
a shunt from pin 1 to pin 2 connects the TXD nets and installing a shunt from pin 3 to pin 4 connects the RXD nets. Note that the GPIOC11/
CANTX/SCL1/TXD and GPIOC12/CANRX/SDA1/RXD1 nets also go to the primary elevator edge connector (J500A) pins B41 and B42 and to
the auxiliary connector (J502) pins 15 and 17. When using these nets for CAN communications care must be taken that these nets are not
driven from these other connectors.
The transceiver is capable of running from 3.3V and is powered by the P3_3V/5V power rail. The transceiver output is connected to header
J13 with CANH connected to pin 4 and CANL connected to pin 3. A 120 ohm parallel termination resistor may be connected between these
nets by installing a shunt on header J15.
2.3.9 IRQ or Input Pushbuttons
The TWR-56F8257 board has two push buttons (SW1 and SW2) that can be used to provide inputs or interrupts to the DSC. Each has a 10K
ohm pull up resistor to P3_3V and a 0.1 uF capacitor to ground to minimize bounce on the output.
Push button SW1 is connected to header J4 where the switch output can be connected to either DSC pin GPIOC2/TXD0/TB0/XB_IN2/CLKO
(default) or GPIOF6/TB2/PWM3X depending on the position of the shunt on the header (pin 1 to pin 2 is the default). Similarly, push button
SW2 is connected to header J5 where the switch output can be connected to either DSC pin GPIOF8/RXD0/TB1 (default) or GPIOF7/TB3
depending on the position of the shunt on the header (pin 1 to pin 2 is the default).
If the push button switches are not being used as an interrupt or other it is best to remove the shunt to the DSC so that the 0.1 uF capacitor
is not loading down the DSC pins.
2.3.10 RESET
The GPIOD4/RESET_B pin of the DSC is connected to the motor control connector and the Tower connector but also to a push button (SW3)
and through buffers to the OSBDM chip. It is pulled to P3_3V by a 10K ohm resistor. It may be pulled low by the push button or by Q1 in
response to a high output from the OSBDM chip (pin 1) on the TRESET_OUT net. The state of the GPIOD4/RESET_B signal is provided to
the OSBDM chip through a voltage translator (U504B). This buffer is powered by the P3_3V/5V power rail so that its input will remain high
impedance when there is no USB cable connected. The buffered RESET signal is provided to pin 33 of the OSBDM chip and is used by the
OSBDM program in that chip.
2.3.11 JTAG Header and OSBDM Disconnect Header
The TWR-56F8257 board includes an OSBDM circuit as a debug interface to the MC56F8257 DSC for normal purposes. If the user desires to
use a different debugger header J14 provides a connection point for an external JTAG based debugger. If an external debugger is connected
to the JTAG header the shunts at J21 (pins 1 to 2, 3 to 4, 5 to 6 and 7 to 8) which connect the OSBDM circuit to the JTAG signals should
be removed.
The TWR-56F8257 board provides a 2.2K ohm pull up resistor to 3.3V on the TMS line. If an external JTAG debugger also has a pull up on
this line the external debugger may not be able to pull the TMS line low. If this occurs, remove one of the pull up resistors on the TMS line.
11TWR-56F8257 User ManualFreescale Semiconductor, Inc.
2.4 OSBDM
2.4.1 Debug Interface
An on-board MC9S08JM60 based OSBDM circuit provides a debug interface to the MC56F8257. A standard USB A male to Mini-B male
cable (supplied) can be used for debugging via the USB connector, J18.
2.4.2 USB Serial Bridge Interface
The on-board MC9S08JM60 can also be used as a USB to serial bridge interface for the UART signals from the MC56F8257 DSC. This
bridge circuit is described in detail in section 2.3.2 Serial I/O Source Select Headers.
The RXD_SEL signal goes to the MC56F8257 DSC. The USB bridge chip is powered by 5V so its output is a 5V output. The multiplexor
(U505) is able to accept the 5V signal from the USB bridge chip (T_TXD1) and converts it to the 3.3V signal (RXD_SEL) for the DSC. The
multiplexor output is enabled by an inverted RTS signal (TXD_RXD_EN_B) from the USB bridge chip. If there is no USB connection to the
Tower board the RTS signal is not driven and the 3.3V powered inverter (U502C) input is biased low disabling the output of the multiplexor.
Similarly, TXD_SEL is a 3.3V signal from the MC56F8257 DSC. The USB bridge chip is expecting a 5V input on T_RXD1. The buffer between
these two signals (U504C) is powered by P3_3V/5V. It will accept the 3.3V input from the DSC and convert it to the 5V signal needed by
the USB bridge chip. The buffer output is enabled by the same inverted RTS signal (TXD_RXD_EN_B) discussed above. If there is no USB
connection to the TWR board the RTS signal is not driven and the 5V powered buffer disabled so nothing is driving the powered down USB
bridge chip.
The USB serial bridge interface is enabled by removing the shunt on J20 before applying power to the board. The serial interface signals
from the MC56F8257 DSC are routed to the MC9S08JM60 serial interface. In the USB serial bridge mode the MC9S08JM60 will convert the
serial interface data into USB packets and send them to the host PC.
2.4.3 Clocking the OSBDM MCU (MC9S08JM60)
The MC9S08JM60 MCU uses an on-board 4 MHz external crystal circuit (Y2, R16, C7, and C9) for its clock. There are no user options for
clocking the MC9S08JM60.
2.4.4 OSBDM/UART Function Select Header
Header J20 selects whether the on-board MC9S08JM60 MCU operates as an OSBDM debug interface or as a USB serial bridge interface.
Leaving the shunt on the header enables the OSBDM debug interface. Removing the shunt on header J20 enables the USB serial
bridge interface.
2.4.5 Bootloader Enable
In addition to the OSBDM debug interface and the USB serial bridge interface the MC9S08JM60 device used in the OSBDM circuit is
pre-programmed with a USB bootloader. The USB bootloader will run following a power-on reset if a shunt is installed on header J17. This
allows in-circuit reprogramming of the JM60 flash memory via USB. This enables the OSBDM firmware to be upgraded by the user when
upgrades become available. In normal OSBDM or USB serial bridge operation this shunt must be left off. For details on the USB bootloader,
refer to application note AN3561at freescale.com.
The USB bootloader communicates with a GUI application running on a host PC. The GUI application can be found at freescale.com: search
keyword “JM60 GUI.” Refer to section 2.5 and 3.3 of AN3561 for details on installing and running the application.
Note: The JM60 GUI installer should be run before connecting the OSBDM in Bootloader Mode to a host USB port. Otherwise, the JM60 USB device will not be recognized and the proper drivers
will not be loaded.
12 TWR-56F8257 User Manual Freescale Semiconductor, Inc.
2.4.6 BDM Header
The BDM header at J22 is used for initial programming of the MC9S08JM60 MCU or if re-programming with the bootloader fails. An external
9S08 BDM debugger would be connected to J22 and used to program the MCU. This is not expected to be a normal user interface.
2.4.7 OSBDM Status LEDs
The MC9S08JM60 OSBDM MCU controls two status LEDs at D12 and D13. Refer to the OSBDM instructions for the meaning of the LEDs.
2.4.8 OSBDM Voltage Translation
Since the OSBDM MCU runs from 5V and the 56F8257 DSC runs from 3.3V there must be voltage translation between the two circuits. This
is done through U505, U504A and U502B. U505 has 5V tolerant inputs and provides 3.3V signals (TCK, TDI, and TMS) to the DSC’s JTAG
pins through the shunts on header J21. U504A is powered by the P3_3V/5V rail and translates the 3.3V TDO signal from the DSC to a 5V
signal for the OSBDM MCU. The outputs of both of these translators are high impedance if the signal OUT_EN_B goes high. This happens if
the OSBDM circuit looses power (no power to the USB connector). In that case, the OUT_EN signal from the OSBDM MCU (pin 15) is biased
low by R12. The inverter at U502B then drives OUT_EN_B high in response. Additional information is included in section 2.4.2.
13TWR-56F8257 User ManualFreescale Semiconductor, Inc.
Jumper Table
There are several headers provided for isolation, configuration and feature selection. Refer to Table 6 for details. The default shunt positions
are shown in bold.
Table 6. TWR-56F8257 Jumper Table
Jumper Function Shunts Description
J1 Thermistor RT1 Connect 1-2, 3-4 Connect RT1 circuit to the MC56F827 DSC
none Disconnect RT1 circuit from the MC56F8257 DSC
J2 Thermistor RT2 Connect 1-2, 3-4 Connect RT2 circuit to the MC56F827 DSC
none Disconnect RT2 circuit from the MC56F8257 DSC
J4 IRQ1 Select 1-2 Connect SW1 to MC56F8257 DSC pin GPIOC2/TXD0/TB0/XB_IN2/CLKO
3-4 Connect SW1 to MC56F8257 DSC pin GPIOF6/TB2/PWM3X
none Disconnect SW1 from the MC56F8257 DSC
J5 IRQ0 Select 1-2 Connect SW2 to MC56F8257 DSC pin GPIOF8/RXD0/TB1
3-4 Connect SW2 to MC56F8257 DSC pin GPIOF7/TB3
none Disconnect SW2 from the MC56F8257 DSC
J6 and J7 3.3V Source Select J6-1 to J7-2 Connect the on-board voltage regulator to the P3_3V power rail
J7-1 to J7-2 Connect P3_3V_MOTOR to the P3_3V power rail (Power the 3.3V rail from the motor control connector)
J7-2 to J7-3 Connect P3_3V_ELEV to the P3_3V power rail (Power the 3.3V rail from the tower connector)
J7-2 open Disconnect the P3_3V power rail: no power
J8 RXD Source Select (Only
one connection can be
made to pin 3 at a time)
1-2 Connect ELEV_RXD0 from the Tower connector to MC56F8257 DSC pin GPIOF8/RXD0/TB1
2-3 Connect RXD_SEL from the USB serial bridge to MC56F8257 DSC pin GPIOF8/RXD0/TB1
Pin 2 open Disconnect MC56F8257 DSC pin GPIOF8/RXD0/TB1
3-4 Connect RXD_SEL from the USB serial bridge to MC56F8257 DSC pin GPIOF5/RXD1/XB_OUT5
4-5 Connect ELEV_RXD1 from the Tower connector to MC56F8257 DSC pin GPIOF5/RXD1/XB_OUT5
Pin 4 open Disconnect MC56F8257 DSC pin GPIOF5/RXD1/XB_OUT5
J9 TXD Source Select (Only
one connection can be
made to pin 3 at a time)
1-2 Connect ELEV_TXD0 from the Tower connector to MC56F8257 DSC pin GPIOC2/TXD0/TB0/XB_IN2/CLKO
2-3 Connect TXD_SEL from the USB serial bridge to MC56F8257 DSC pin GPIOC2/TXD0/TB0/XB_IN2/CLKO
Pin 2 open Disconnect MC56F8257 DSC pin GPIOC2/TXD0/TB0/XB_IN2/CLKO
3-4 Connect TXD_SEL from the USB serial bridge to MC56F8257 DSC pin GPIOF4/TXD1/XB_OUT4
4-5 Connect ELEV_TXD1 from the Tower connector to MC56F8257 DSC pin GPIOF4/TXD1/XB_OUT4
Pin 4 open Disconnect MC56F8257 DSC pin GPIOF4/TXD1/XB_OUT4
J10 and
J11
5V Source Select J10-1 to J11-2 Connect the power in barrel connector (Through fuse F1) to the input of the 3.3V voltage regulator
J11-1 to J11-2 Connect P5V_TRG_USB (The switched USB 5V) to the input of the 3.3V voltage regulator
J11-2 to J11-3 Connect P5V_ELEV to the input of the 3.3V voltage regulator
J11-2 open Disconnect the input of the 3.3V voltage regulator
J12 Unused open Unused
J15 CAN Termination Enable 1-2 Connect the 120 ohm CAN termination resistor
open No CAN termination
J16 CAN Enable 1-2, 3-4 Connect the CAN transceiver TXD and RXD to MC56F8257 DSC pins GPIOC11/CANTX/SCL1/TXD1 and
GPIOC12/CANRX/SDA1/RXD1
open Disconnect the CAN transceiver
J17 MC9S08JM60 Bootload
Enable
1-2 Enable USB bootloading of the MCU flash memory
open Disable bootloading
J19 Thermistor RT3 Connect 1-2, 3-4 Connect RT3 circuit to the MC56F827 DSC
none Disconnect RT3 circuit from the MC56F8257 DSC
J20 OSBDM Enable 1-2 Enable OSBDM function
none Enable USB serial bridge function
J21 OSBDM Connect to
JTAG
1-2, 3-4, 5-6, 7-8 Connect the OSBDM debug signals (JTAG) to the MC56F8257 DSC JTAG pins
none Disconnect OSBDM from the MC56F8257 DSC
J23 Thermistor RT4 Connect 1-2, 3-4 Connect RT4 circuit to the MC56F827 DSC
none Disconnect RT4 circuit from the MC56F8257 DSC
14 TWR-56F8257 User Manual Freescale Semiconductor, Inc.
Appendix A: Tower Elevator Connector Pin Functions
Table 7 provides the pin out for the primary elevator connector. An “X” in the “Used” column indicated that there is a connection from the
TWR-56F8257 board to that pin on the elevator connector. An “X” in the “Jmp” column indicates that a jumper is available that can isolate
the on-board circuitry from the elevator connector. An “X” in the “Jmp” column indicates that a jumper is available that can isolate part of the
on-board circuitry from the elevator connector.
The function listed in the “Usage” column is the function(s) that the pin is expected to be programmed to provide when used with the Tower
system. All of the MC56F8257 pins (except power) have multiple functions. Not all of the possible functions are shown.
Note that all analog pins (ANAn or ANBn) have a low pass filter to ground consisting of a 100 ohm resistor and a 2200 pf capacitor. This is to
protect the analog inputs of the DSC from a static discharge at one of the connectors. See schematic sheets 6 and 7 in Appendix B: TWR-
56F8257 Board Schematic.
Table 7. TWR-56F8257 Primary Elevator Connector Pin Out
TWR-56F8257 Primary Connector
Pin Name Usage Used Jmp Pin Name Usage Used Jmp
B1 5V 5V Power X X A1 5V 5V Power X X
B2 GND Ground X A2 GND Ground X
B3 3.3V 3.3V Power X X A3 3.3V 3.3V Power X X
B4 ELE_PS_SENSE 3.3V Power X X A4 3.3V 3.3V Power X X
B5 GND Ground X A5 GND Ground X
B6 GND Ground X A6 GND Ground X
B7 SDHC_CLK / SPI1_CLK SCK (See also pin B48) X A7 SCL0 SCL0 X
B8 SDHC_D3 / SPI1_CS1_b A8 SDA0 SDA0 X
B9 SDHC_D3 / SPI1_CS0_b SS_B (See also pin B46) X A9 GPIO9 / CTS1 GPIOA4/ANA4 X X
B10 SDHC_CMD / SPI1_
MOSI
MOSI (See also pin B45) X A10 GPIO8 /
SDHC_D2
GPIOA5/ANA5 X X
B11 SDHC_D0 / SPI1_MISO MISO (See also pin B44) X A11 GPIO7 / SD_
WP_DET
GPIOA6/ANA6 X X
B12 ETH_COL A12 ETH_CRS
B13 ETH_RXER A13 ETH_MDC
B14 ETH_TXCLK A14 ETH_MDIO
B15 ETH_TXEN A15 ETH_RXCLK
B16 ETH_TXER A16 ETH_RXDV
B17 ETH_TXD3 A17 ETH_RXD3
B18 ETH_TXD2 A18 ETH_RXD2
B19 ETH_TXD1 A19 ETH_RXD1
B20 ETH_TXD0 A20 ETH_RXD0
B21 GPIO1 / RTS1 GPIOB4/ANB4&CMPC_M1 X X A21 SSI_MCLK
B22 GPIO2 / SDHC_D1 GPIOB5/ANB5&CMPC_M2 X X A22 SSI_BCLK
B23 GPIO3 GPIOB6/ANB6&CMPB_M1 X X A23 SSI_FS
B24 CLKIN0 XTAL&CLKIN X X A24 SSI_RXD
B25 CLKOUT1 A25 SSI_TXD
B26 GND Ground X A26 GND Ground X
B27 AN7 ANB3&CMPC_M0 X A27 AN3 ANA3&CMPA_M2 X X
B28 AN6 ANB2&CMPC_P2 X A28 AN2 ANA2&CMPA_M1 X
B29 AN5 ANB1&VERFLB&CMPB_M0 X A29 AN1 ANA1&VREFLA&CMPA_M0 X
B30 AN4 ANB0&VERFHB&CMPB_P2 X A30 AN0 ANA0&VREFHA&CMPA_P2/CMPC_O X
B31 GND Ground X A31 GND Ground X
B32 DAC1 A32 DAC0 DAC0 X
B33 TMR3 TA3 X A33 TMR1 TA1 X
15TWR-56F8257 User ManualFreescale Semiconductor, Inc.
Pin Name Usage Used Jmp Pin Name Usage Used Jmp
B34 TMR2 TA2 X A34 TMR0 TA0 X
B35 GPIO4 GPIOB7/ANB7&CMPB_M2 X X A35 GPIO6 GPIOA7/ANA7 X X
B36 3.3V 3.3V Power X X A36 3.3V 3.3V Power X X
B37 PWM7 PWM3B X A37 PWM3 PWM1B X
B38 PWM6 PWM3A X A38 PWM2 PWM1A X
B39 PWM5 PWM2B X A39 PWM1 PWM0B X
B40 PWM4 PWM2A X A40 PWM0 PWM0A X
B41 CANRX0 CANRX X X A41 RXD0 ELEV_RXD0 (See also pin B61) X X
B42 CANTX0 CANTX X X A42 TXD0 ELEV_TXD0 (See also pin B62) X X
B43 1WIRE A43 RXD1 ELEV_RXD1 X X
B44 SPI0_MISO/IO1 MISO (See also pin B11) X A44 TXD1 ELEV_TXD1 X X
B45 SPI0_MOSI/IO0 MOSI (See also pin B10) X A45 VSSA VSSA
B46 SPI0_CS0_b SS_B (See also pin B9) X A46 VDDA VDDA
B47 SPI0_CS1_b A47 VREFA1 Test Point 7 (TP7)
B48 SPI0_CLK SCK (See also pin B7) X A48 VREFA2 Test Point 8 (TP8)
B49 GND Ground X A49 GND Ground X
B50 SCL1 SCL1 X A50 GPIO14
B51 SDA1 SDA1 X A51 GPIO15
B52 GPIO5/SPIO_HOLD/IO3 GPIOF0 X A52 GPIO16
B53 USB0_DP_PDOWN A53 GPIO17
B54 USB0_DM_PDOWN A54 USB0_DM
B55 IRQ_H A55 USB0_DP
B56 IRQ_G A56 USB0_ID
B57 IRQ_F A57 USB0_VBUS
B58 IRQ_E A58 TMR7 TB3 X X
B59 IRQ_D A59 TMR6 TB2 X X
B60 IRQ_C A60 TMR5
B61 IRQ_B TB1 (See also pin A41) X X A61 TMR4
B62 IRQ_A TB0 (See also pin A42) X X A62 RSTIN_b RESET_B X
B63 EBI_ALE / EBI_CS1_b A63 RSTOUT_b RESET_B X
B64 EBI_CS0_b A64 CLKOUT0 CLKO X
B65 GND Ground X A65 GND Ground X
B66 EBI_AD15 A66 EBI_AD14
B67 EBI_AD16 A67 EBI_AD13
B68 EBI_AD17 A68 EBI_AD12
B69 EBI_AD18 A69 EBI_AD11
B70 EBI_AD19 A70 EBI_AD10
B71 EBI_R/W_b A71 EBI_AD9
B72 EBI_OE_b A72 EBI_AD8
B73 EBI_D7 A73 EBI_AD7
B74 EBI_D6 A74 EBI_AD6
B75 EBI_D5 A75 EBI_AD5
B76 EBI_D4 A76 EBI_AD4
B77 EBI_D3 A77 EBI_AD3
B78 EBI_D2 A78 EBI_AD2
B79 EBI_D1 A79 EBI_AD1
B80 EBI_D0 A80 EBI_AD0
B81 GND Ground X A81 GND Ground X
B82 3.3V 3.3V Power X X A82 3.3V 3.3V Power X X
16 TWR-56F8257 User Manual Freescale Semiconductor, Inc.
Appendix B: TWR-56F8257 Board Schematic
17TWR-56F8257 User ManualFreescale Semiconductor, Inc.
18 TWR-56F8257 User Manual Freescale Semiconductor, Inc.
19TWR-56F8257 User ManualFreescale Semiconductor, Inc.
20 TWR-56F8257 User Manual Freescale Semiconductor, Inc.
Appendix C: TWR-56F8257 Board BOM
Manufacturer BOM Report
Item Number 750-26034 Rev B Manufacturers BOM
Description SUB ASSEMBLY, SCHEMATIC PARTS,700-26034,TWR-56F8257
Item Revision A ECO28529
Sites 5150~Freescale Dev-Tech~DEVTOOL
Date and Time 13-Oct-2010 04:23:41 PM CDT
Subclass Number Description Qty Ref Des
Manufacturer Name Manufacturer Part Number Preferred Status
CADPart 150-30253 CAP CER 2.2UF 10V 10% X5R 0603 2 C508, C511
TDK C1608X5R1A225K Preferred
VENKEL COMPANY C0603X5R100-225KNE Alternate
MURATA GRM188R61A225KE34D Alternate
CADPart 150-75016 CAP CER 0.10UF 25V 10% X7R 0603 23 C3, C4, C8, C500, C501, C503, C505,
C509, C510, C513, C514, C515, C530,
C532, C533, C535, C536, C537, C538,
C539, C542, C543, C544
Yageo CC0603KRX7R8BB104 Alternate
WALSIN TECHNOLOGY CORP. 0603B104K250CT Alternate
VENKEL COMPANY C0603X7R250-104KNE Alternate
MURATA GRM188R71E104KA01 Alternate
AVX 06033C104KAT2A Alternate
KEMET C0603C104K3RAC Preferred
CADPart 150-75116 CAP CER 18PF 50V 5% C0G 0603 2 C7, C9
YAGEO AMERICA CC0603JRNPO9BN180 Preferred
SKYMOS 0603CG180J500NT Alternate
VENKEL COMPANY C0603C0G500-180JNE Alternate
WALSIN TECHNOLOGY CORP. 0603N180J500LT Alternate
KEMET C0603C180J5GAC Alternate
AVX 06035A180JAT2A Alternate
MURATA GRM1885C1H180JA01J Alternate
CADPart 150-75283 CAP CER 10UF 16V 10% X5R 0805 7 C1, C2, C506, C516, C520, C540, C541
WALSIN TECHNOLOGY CORP. 0805X106K160CT Alternate
AVX 0805YD106KAT2A Preferred
KEMET C0805C106K4PAC Alternate
MURATA GRM21BR61C106KE15L Alternate
YAGEO AMERICA CC0805KKX5R7BB106 Alternate
CADPart 150-75600 CAP CER 2200PF 50V 10% X7R 0402 15 C502, C504, C507, C512, C517, C518,
C519, C521, C522, C523, C524, C525,
C526, C527, C528
SMEC MCCE222K0NRTF Preferred
WALSIN TECHNOLOGY CORP. 0402B222K500CT Alternate
CADPart 150-78519 CAP CER 1000PF 50V 5% C0G 0603 1 C534
WALSIN TECHNOLOGY CORP. 0603N102J500LT Preferred
CADPart 180-30021 IND FER BEAD 330 ohm @ 100 MHz
2.5A -- SMT
2 L1, L2
TDK MPZ2012S331A Preferred
CADPart 180-75046 IND 600 ohm @ 100 MHz 0.2A 25%
0603 SMT
2 L500, L501
MURATA BLM18BD601SN1D Preferred
21TWR-56F8257 User ManualFreescale Semiconductor, Inc.
Subclass Number Description Qty Ref Des
Manufacturer Name Manufacturer Part Number Preferred Status
CADPart 210-75683 TEST POINT BLACK 40 MIL DRILL 180
MIL TH
1 TP4
COMPONENTS CORPORATION TP-105-01-00 Preferred
KEYSTONE ELECTRONICS 5001 Alternate
KOBICONN 151-203-RC Alternate
CADPart 210-75818 CON 1 PWR PLUG RA TH 1A -- 430H NI 1 J3
WIN WIN PRECISION INDUSTRIAL
CO. LTD
DC0005E-2.0 Alternate
SWITCHCRAFT RAPC722X Preferred
ANYTRONIC CORPORATION LIMITED 4004201N0-16LF Alternate
CADPart 211-75177 CON 2X20 SMT SKT 100MIL CTR 307H
AU
1 J501
FCI 89898-320ALF Alternate
ANYTRONIC CORPORATION LIMITED 08026M32015#6T-10LF Alternate
SAMTEC SSM-120-L-DV-BE Preferred
CADPart 211-75905 CON 2X13 SKT SMT 100MIL CTR 300H
AU
1 J502
SAMTEC SSM-113-L-DV-TR Preferred
CADPart 211-78723 CON 1X5 USB MINI-B RA SHLD SKT
SMT 0.8 mm SP 159H AU
1 J18
WIN WIN PRECISION INDUSTRIAL
CO. LTD
MUBF-5S-TSROBTC Preferred
CADPart 230-76633 XTAL 4 MHz -- SMT 1 Y2
ECS INC. INTERNATIONAL ECS-40-20-5PX-TR Preferred
CADPart 312-75336 IC GATE HEX INV -- TSSOP14 2 U500, U502
TEXAS INSTRUMENTS SN74LVC04APWE4_ Preferred
CADPart 312-75936 IC LIN SW PWR ACTIVE HIGH DUAL
2.7V–5.5V 0.5A SOIC8
1 U501
MICREL MIC2026-1YM Preferred
CADPart 312-77275 IC MCU 8-bit 60K FLASH 48 MHz
2.7–5.5V LQFP44
1 U6
FREESCALE SEMICONDUCTOR MC9S08JM60CLD Preferred
CADPart 312-77298 IC BUF QUAD TS 1.65–3.6V TSSOP14 1 U505
NXP SEMICONDUCTORS 74LVC125APW Alternate
TEXAS INSTRUMENTS SN74LVC125APWG4 Preferred
CADPart 312-79576 IC DSC 16-bit 60 MHz 3.0–3.6V LQFP64 1 U2
FREESCALE SEMICONDUCTOR PC56F8257VLH Preferred
CADPart 312-79586 IC BUF QUAD TS 4.5–5.5V SOIC14 1 U504
TEXAS INSTRUMENTS SN74HCT125D Preferred
CADPart 315-30028 IC XCVR CAN 1MBAUD 5V S08 1 U503
PHILIPS SEMICONDUCTOR PCA82C250T/N4 Preferred
PHILIPS SEMICONDUCTOR PCA82C250TD Preferred
PHILIPS SEMICONDUCTOR PCA82C250TD-G Preferred
CADPart 315-76506 IC VREG LDO 3.3V 0.7A 4.3–20V SOT-
223
1 U1
LINEAR TECHNOLOGY LT1129CST-3.3#PBF Preferred
CADPart 370-76470 LED AMB SGL 30MA 0603 1 D9
Bright Led Electronics Corp BL-HJF36D-AV-TRB Alternate
Bright Led Electronics Corp BL-HJF36D-TRB Preferred
CADPart 370-76471 LED YEL SGL 30MA 0603 5 D2, D4, D6, D8, D13
Bright Led Electronics Corp BL-HKC36D-TRB Preferred
22 TWR-56F8257 User Manual Freescale Semiconductor, Inc.
Subclass Number Description Qty Ref Des
Manufacturer Name Manufacturer Part Number Preferred Status
CADPart 370-76472 LED YEL GRN SGL 30MA 0603 6 D1, D3, D5, D7, D10, D12
Bright Led Electronics Corp BL-HGE36D-TRB Preferred
CADPart 470-30149 RES MF 120 ohm 1/16W 1% 0402 1 R560
WALSIN TECHNOLOGY CORP. WR04X1200FTL Alternate
VISHAY INTERTECHNOLOGY CRCW0402120RFKED Preferred
THYE MING TECH CO LTD CR02FL6-120R Alternate
CADPart 470-30454 RES MF 100 ohm 1/16W 1% 0402 40 R510, R511, R512, R513, R514, R515,
R516, R517, R518, R519, R520, R521,
R522, R523, R524, R525, R526, R529,
R530, R531, R532, R533, R534, R535,
R537, R538, R540, R541, R542, R543,
R544, R545, R546, R547, R548, R549,
R550, R551, R552, R553
VISHAY INTERTECHNOLOGY CRCW0402100RFKED Alternate
VENKEL COMPANY CR0402-16W-1000FT Alternate
THYE MING TECH CO LTD CR-02FL6--100R Preferred
WALSIN TECHNOLOGY CORP. WR04X1000FTL Alternate
CADPart 470-30782 RES MF 270 ohm 1/16W 1% 0402 1 R1
WALSIN TECHNOLOGY CORP. WR04X2700FTL Alternate
KOA SPEER RK73H1ETTP2700F Preferred
CADPart 470-30913 RES MF 4.99K 1/16W 1% 0402 6 R508, R509, R562, R569, R571, R576
KOA SPEER RK73H1ETTP4991F Preferred
WALSIN TECHNOLOGY CORP. WR04X4991FTL Alternate
CADPart 470-31081 RES MF 158K 1/16W 1% 0402 2 R505, R506
WALSIN TECHNOLOGY CORP. WR04X1583FTL Alternate
KOA SPEER RK73H1ETTP1583F Preferred
CADPart 470-75416 RES MF 10.0K 1/16W 1% 0402 15 R2, R3, R8, R9, R11, R12, R13, R14,
R15, R554, R555, R561, R570, R574,
R575
WALSIN TECHNOLOGY CORP. WR04X1002FTL Alternate
VISHAY INTERTECHNOLOGY CRCW040210K0FKED Alternate
SKYMOS SCR-0402-K-103-F-T Alternate
VIKING COMPONENTS CR-02FL6---10K Alternate
SMEC RC73A2Z1002FTF Alternate
YAGEO AMERICA 9C04021A1002FLPF3 Alternate
KOA SPEER RK73H1ETTP1002F Preferred
VENKEL COMPANY CR0402-16W-1002FT Alternate
BOURNS CR0402-FX-1002GLF Alternate
VENKEL COMPANY CR0402-16W-1002FSNT Alternate
CADPart 470-75442 RES MF ZERO ohm 1/8W -- 0805 3 R4, R10, R568
YAGEO AMERICA RC0805JR-070RL Alternate
SMEC RC73JP2DTF Alternate
BOURNS CR0805-J/-000ELF Preferred
VENKEL COMPANY CR0805-8W-000T Alternate
VISHAY INTERTECHNOLOGY CRCW0805000RJNEA Alternate
KOA SPEER RK73Z2ATTD Alternate
PANASONIC ERJ6GEY0R00V Alternate
ROHM MCR10EZPJ000 Alternate
TMTEC CR-05JL7----0R Alternate
23TWR-56F8257 User ManualFreescale Semiconductor, Inc.
Subclass Number Description Qty Ref Des
Manufacturer Name Manufacturer Part Number Preferred Status
CADPart 470-75790 RES MF 33.0 ohm 1/16W 1% 0402 2 R572, R573
BOURNS CR0402FX33R0GLF Alternate
THYE MING TECH CO LTD CR-02FL6---33R Preferred
YAGEO AMERICA RC0402FR-0733RL Alternate
WALSIN TECHNOLOGY CORP. WR04X33R0FTL Alternate
CADPart 470-76037 RES MF 1.0K 1/16W 1% 0402 3 R557, R563, R564
BOURNS CR0402-FX-1001GLF Alternate
VISHAY INTERTECHNOLOGY CRCW-0402-1K00-FK-E3 Alternate
KOA SPEER RK73H1ETTP1001F Preferred
THYE MING TECH CO LTD CR-02FL6----1K Alternate
PANASONIC ERJ-2RKF1001X Alternate
YAGEO AMERICA RC0402FR-071KL Alternate
CADPart 470-76235 RES MF 53.6K 1/16W 1% 0402 2 R566, R567
SMEC RC73A2Z5362FTF Alternate
KOA SPEER RK73H1ETTP5362F Preferred
WALSIN TECHNOLOGY CORP. WR04X5362FTL Alternate
CADPart 470-76465 RES MF 330 ohm 1/16W 1% 0402 9 R500, R501, R502, R503, R504, R507,
R556, R558, R559
WALSIN TECHNOLOGY CORP. WR04X3300FTL Alternate
THYE MING TECH CO LTD CR-02FL6--330R Alternate
VISHAY INTERTECHNOLOGY CRCW0402330RFK Preferred
CADPart 470-76481 RES MF 10M 1/16W 1% 0402 1 R16
WALSIN TECHNOLOGY CORP. WR04X1005FTL Alternate
THYE MING TECH CO LTD CR02FL6--10M Preferred
CADPart 470-78359 RES MF 2.2K 1/16W 1% 0402 1 R565
VISHAY INTERTECHNOLOGY CRCW04022K20FKED Alternate
KOA SPEER RK73H1ETTP2201F Preferred
CADPart 470-80022 THERMISTOR 10K 1/10W 1% 0603 4 RT1, RT2, RT3, RT4
MURATA NCP18XH103F03RB Preferred
CADPart 480-30005 DIODE SCH PWR RECT 1A 30V SOD-
123
1 D500
ON SEMICONDUCTOR MBR130LSFT1G Preferred
CADPart 480-75173 TRAN NPN GEN 200MA 40V SOT-23 1 Q1
PHILIPS SEMICONDUCTOR MMBT3904 Alternate
MICRO COMMERCIAL
COMPONENTS CORP
MMBT3904-TP Alternate
ON SEMICONDUCTOR MMBT3904LT1G Preferred
CADPart 480-76886 DIODE TVS ARRAY 3-ch. -- 5V 0.225W
SOT143
1 U5
LITTELFUSE SP0503BAHTG Preferred
CADPart 480-77944 DIODE SCH DUAL CC 200MA 30V
SOT23
1 D501
FAIRCHILD BAT54C Preferred
CADPart 510-75078 SW SMT 4 MM FMS 0.1A MAX 16V
MAX ROHS COMPLIANT
3 SW1, SW2, SW3
BOURNS 7914J-1-000E Preferred
CADPart 510-75080 FUSE PLYSW 1.1A 0.48 ohm SMT 1 F1
TYCO ELECTRONICS SMD100F-2 Preferred
24 TWR-56F8257 User Manual Freescale Semiconductor, Inc.
Subclass Number Description Qty Ref Des
Manufacturer Name Manufacturer Part Number Preferred Status
CADPart 150-75202 CAP CER 22PF 50V 5% C0G 0805 0 C5, C6
KEMET C0805C220J5GAC Preferred
AVX 08055A220JAT2A Alternate
KOA SPEER NPO0805HTTD220J Alternate
VENKEL COMPANY C0805C0G500-220JNE Alternate
CADPart 210-75439 HDR 1X2 TH 100MIL SP 339H AU 98L 3 J15, J17, J20
SAMTEC HTSW-102-07-G-S Alternate
ANYTRONIC CORPORATION LIMITED 090021S02015-2LF Alternate
SAMTEC TSW-102-07-S-S Alternate
FCI 77311-801-02LF Alternate
SAMTEC HTSW-102-07-SM-S Alternate
ANYTRONIC CORPORATION LIMITED 090021S02018-2LF Alternate
SAMTEC TSW-102-07-G-S Preferred
3M 929647-01-02-EU Alternate
CADPart 210-75726 HDR 1X3 TH 100MIL SP 339H AU 100L 4 J4, J5, J7, J11
FCI 77311-801-03LF Alternate
SAMTEC TSW-103-07-S-S Alternate
SAMTEC TSW-103-07-G-S Preferred
ANYTRONIC CORPORATION LIMITED 090021S03015-2LF Alternate
CADPart 210-79790 HDR 1X1 TH -- 350H AU 100L 2 J6, J10
SAMTEC TSW-101-07-L-S Preferred
ANYTRONIC CORPORATION LIMITED 090021S01015-2LF Alternate
FRAMATOME CONNECTORS
INTERNATIONAL
68000-201HLF Alternate
CADPart 211-78844 CON DUAL 2X82 Edge PCI Express
SMT 1MM SP 591H for Tower System
Not an Orderable Part
1 J500A/B
CADPart 211-78931 HDR 2X4 SMT 100MIL CTR 400H AU 1 J21
FCI 98401-801A08LF Alternate
ANYTRONIC CORPORATION LIMITED 090092H04015N6T-2LF Alternate
FCI 98401-101A08LF Alternate
SAMTEC TSM-104-01-L-DV-A-P-TR Preferred
CADPart 211-78932 HDR 2X5 SMT 100MIL CTR 400H AU 1 J13
ANYTRONIC CORPORATION LIMITED 090092H05015N6T-2LF Alternate
FCI 98401-801A10LF Alternate
FCI 98401-101A10LF Alternate
SAMTEC TSM-105-01-L-DV-A-P-TR Preferred
CADPart 211-78936 HDR 2X2 SMT 100MIL CTR 400H AU 5 J1, J2, J16, J19, J23
FCI 95278-101A04LF Alternate
SAMTEC TSM-102-01-L-DV-P-TR Preferred
ANYTRONIC CORPORATION LIMITED 090092M02015N6T-2LF Alternate
FCI 95278-801A04LF Alternate
CADPart 211-78942 HDR 2X3 SMT 100MIL CTR 414H AU 1 J22
FCI 95278-801A06LF Alternate
FCI 95278-101A06LF Alternate
ANYTRONIC CORPORATION LIMITED 090092M03015N6T-2LF Alternate
SAMTEC TSM-103-01-L-DV-P-TR Preferred
25TWR-56F8257 User ManualFreescale Semiconductor, Inc.
Subclass Number Description Qty Ref Des
Manufacturer Name Manufacturer Part Number Preferred Status
CADPart 211-78959 HDR 1X5 SMT 100MIL SP 380H AU 2 J8, J9
FCI 54201-G0805ALF Alternate
SAMTEC TSM-105-01-L-SV-P-TR Preferred
FCI 54201-S0805ALF Alternate
CADPart 211-78966 HDR 2X7 SMT 2.54MM SP 397H AU 1 J14
FCI 95278-801A14LF Alternate
ANYTRONIC CORPORATION LIMITED 090092M07015N6T-2LF Alternate
FCI 95278-101A14LF Alternate
SAMTEC TSM-107-01-L-DV-P-TR Preferred
CADPart 480-78141 DIODE ZNR 200W 12V SOD-123 1 D11
ON SEMICONDUCTOR SMF12AT1G Preferred
CADPart 150-75214 CAP CER 0.47UF 25V 10% X7R 0805 0 C529, C531
VENKEL COMPANY C0805X7R250-474KNE Preferred
AVX 08053C474KAT2A Alternate
KEMET C0805C474K3RAC Alternate
WALSIN TECHNOLOGY CORP. 0805B474K250CT Alternate
CADPart 210-75439 HDR 1X2 TH 100MIL SP 339H AU 98L 0 J12
SAMTEC HTSW-102-07-G-S Alternate
ANYTRONIC CORPORATION LIMITED 090021S02015-2LF Alternate
SAMTEC TSW-102-07-S-S Alternate
FCI 77311-801-02LF Alternate
SAMTEC HTSW-102-07-SM-S Alternate
ANYTRONIC CORPORATION LIMITED 090021S02018-2LF Alternate
SAMTEC TSW-102-07-G-S Preferred
3M 929647-01-02-EU Alternate
CADPart 210-75683 TEST POINT BLACK 40 MIL DRILL 180
MIL TH
0 TP1, TP2, TP3, TP5, TP6, TP7, TP8
COMPONENTS CORPORATION TP-105-01-00 Preferred
KEYSTONE ELECTRONICS 5001 Alternate
KOBICONN 151-203-RC Alternate
CADPart 230-30033 XTAL 8 MHz SER SMT 0 Y1
CITIZEN HCM49-8.000MABJ-UT Preferred
CTS ATS08ASM-T Alternate
ECS INC. INTERNATIONAL ECS-80-18-5PX Alternate
CADPart 470-30454 RES MF 100 ohm 1/16W 1% 0402 0 R536
VISHAY INTERTECHNOLOGY CRCW0402100RFKED Alternate
VENKEL COMPANY CR0402-16W-1000FT Alternate
THYE MING TECH CO LTD CR-02FL6--100R Preferred
WALSIN TECHNOLOGY CORP. WR04X1000FTL Alternate
CADPart 470-75442 RES MF ZERO ohm 1/8W -- 0805 0 R5, R7
YAGEO AMERICA RC0805JR-070RL Alternate
SMEC RC73JP2DTF Alternate
BOURNS CR0805-J/-000ELF Preferred
VENKEL COMPANY CR0805-8W-000T Alternate
VISHAY INTERTECHNOLOGY CRCW0805000RJNEA Alternate
KOA SPEER RK73Z2ATTD Alternate
PANASONIC ERJ6GEY0R00V Alternate
ROHM MCR10EZPJ000 Alternate
TMTEC CR-05JL7----0R Alternate
26TWR-56F8257 User ManualFreescale Semiconductor, Inc.
Subclass Number Description Qty Ref Des
Manufacturer Name Manufacturer Part Number Preferred Status
CADPart 470-75458 RES MF 100 ohm 1/8W 1% 0805 0 R539
PANASONIC ERJ6ENF1000V Alternate
YAGEO AMERICA RC0805FR-07100RL Alternate
ROHM MCR10EZPF1000 Alternate
KOA SPEER RK73H2ATTD1000F Alternate
VENKEL COMPANY CR0805-8W-1000FT Preferred
VISHAY INTERTECHNOLOGY CRCW0805100RFKEA Alternate
BOURNS CR0805-FX-1000ELF Alternate
CADPart 470-75952 RES MF 1.0M 1/8W 1% 0805 0 R6
BOURNS CR0805-FX-1004ELF Alternate
KOA SPEER RK73H2ATTD1004F Alternate
VENKEL COMPANY CR0805-8W-1004FSNT Preferred
ROHM MCR10EZPF1004 Alternate
VISHAY INTERTECHNOLOGY CRCW08051M00FKEA Alternate
PANASONIC ERJ6ENF1004V Alternate
CADPart 470-76037 RES MF 1.0K 1/16W 1% 0402 0 R527, R528
BOURNS CR0402-FX-1001GLF Alternate
VISHAY INTERTECHNOLOGY CRCW-0402-1K00-FK-E3 Alternate
KOA SPEER RK73H1ETTP1001F Preferred
THYE MING TECH CO LTD CR-02FL6----1K Alternate
PANASONIC ERJ-2RKF1001X Alternate
YAGEO AMERICA RC0402FR-071KL Alternate
CADPart 510-77681 MICROPHONE MINI SISONIC 300 ohm
59DB 1.5–3.6V SMT
0 U4
KNOWLES ACOUSTICS SPM0408HE5H-SB Preferred
CADPart 750-77085 SKT 64 QFP TH 0.5 mm 630MIL AU
87L + IC DSC MC56F8257VLF 3.0–3.6V
LQFP64
0 U3
CADPart 210-78980 SKT 64 QFP TH 0.5 mm SP 630H AU
87L
1
YAMAICHI ELECTRONICS IC234-0644-122P-1 Preferred
CADPart 312-79576 IC DSC 16-bit 60MHZ 3.0–3.6V LQFP64 1
FREESCALE SEMICONDUCTOR PC56F8257VLH Preferred
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Document Number: TWR56F8257UM
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