DEMO908AP64 - Freescale Semiconductor

!Axiom Manufacturing • 2813 Industrial Lane • Garland, TX 75041

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DEMO908AP64

Demonstration Module for Freescale 68HC908AP64

DEMO908AP64 JUNE 28, 2004

CONTENTS

CAUTIONARY NOTES.............................................................................................................................3

TERMINOLOGY ...................................................................................................................................3

FEATURES...............................................................................................................................................4

REFERENCE DOCUMENTATION.......................................................................................................5

GETTING STARTED................................................................................................................................5

RUN MODE ..........................................................................................................................................5

MON08 DEBUG MODE........................................................................................................................6

SOFTWARE DEVELOPMENT .............................................................................................................7

MEMORY MAP.........................................................................................................................................7

OPERATION.............................................................................................................................................7

POWER SUPPLY.................................................................................................................................8

TB1 – Terminal Block.......................................................................................................................8

Figure 1: TB1 Terminal Block Connector.........................................................................................8

Connector J1....................................................................................................................................8

PWR_SEL Jumper...........................................................................................................................9

Figure 2: PWR_SEL Jumper Settings..............................................................................................9

RESET SWITCH ..................................................................................................................................9

TIMING...............................................................................................................................................10

Figure 3: OSC_SEL Jumper Settings............................................................................................10

RS-232 COMMUNICATIONS.............................................................................................................10

Table 2: COM Connections............................................................................................................10

COM Connector.............................................................................................................................11

Figure 4: COM Connector..............................................................................................................11

Figure 5: COM_SEL Jumper Settings............................................................................................11

SINGLE-WIRE MON08 COMMUNICATIONS....................................................................................11

Figure 6: MON_EN Jumper Setting...............................................................................................11

VTST_EN.......................................................................................................................................12

Figure 7: VTST_EN Jumper Setting ..............................................................................................12

Figure 8: Single-Wire MON08 Setup .............................................................................................12

USER COMPONENTS.......................................................................................................................12

Table 3: User EN Option Settings..................................................................................................12

SW1 and SW2 Pushbutton Switches.............................................................................................13

LED1 and LED2 Indicators ............................................................................................................13

RV1 Potentiometer.........................................................................................................................13

RZ1 Photocell ................................................................................................................................13

INFRARED TRANSCEIVER...............................................................................................................13

APPENDIX A..........................................................................................................................................14

I/O PORT CONNECTORS .................................................................................................................14

MON08 PORT................................................................................................................................14

MCU I/O Port Connector................................................................................................................14

APPENDIX B..........................................................................................................................................15

MECHANICAL DETAILS ....................................................................................................................15

APPENDIX C..........................................................................................................................................16

BILL OF MATERIALS.........................................................................................................................16

DEMO908AP64 JUNE 28, 2004

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 DEMO908AP64 module:

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

been verified to meet with requirements the FCC as a CLASS A 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 other

apparatus in the immediate vicinity. If such interference is detected, suitable mitigating

measures should be taken.

TERMINOLOGY

This development module uses option selection jumpers. A jumper is a plastic shunt that con-

nects 2 terminals electrically. Terminology for application of the option jumpers is as follows:

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 knife to break the default connection. To reconnect the circuit, simply in-

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

DEMO908AP64 JUNE 28, 2004

FEATURES

The DEMO908AP64 is an evaluation or demonstration module for the 68HC908AP64

microcontroller. Development of applications is quick and easy with the included wall plug,

DB9 serial cable, sample software tools, and examples. The MON08 port is provided for

development tool application and is compatible with HC08 monitor interface cables and

software. The module provides options to allow MON08 access through the COM port also. A

40-pin MCU I/O connector (J1) allows interfacing the DEMO908AP64 module to external

connections.

Features:

♦ 68HC908AP64 CPU

♦ 60K Byte Flash

♦ 2K Bytes Ram

♦ 40 I/O lines (44-pin package)

♦ 2 Channel Timer/PWM, 16 bit

♦ SCI and SPI Communications Ports

♦ 12 Key Board Wake-up Ports

♦ IrDA Serial Port

♦ Analog Comparator, R/R

♦ 8Mhz Internal Bus Operation

♦ 8 High Current Pins

♦ Power Input Selection Jumper

- Optional power input from Connector J1

- Optional power output through Connector J1

♦ 32.768KHz Crystal or 9.8304MHz Clock

♦ Regulated +5V power supply

♦ RS-232 COM Serial Port w/ DB9 Connector

♦ Optional MON08 Interface through COM Port

♦ Full-duplex IrDA Interface, low speed

♦ User Components Provided

- 3 Push Switches; 2 User, 1 Reset

- 3 LED Indicators; 2 User, 1 +3.3V

♦ Option Jumpers

♦ 6 - User Component Enables

♦ 2 - Power Select

♦ 1 - OSC_SEL

♦ 1 - COM_SEL

♦ 1 - MON_EN

♦ 1 - VTST_EN

♦ Connectors

♦ 40-pin MCU I/O Connector, stack through type

♦ 2-Position, Screw-type, Power Input Terminal Block

♦ MON08 Debug Cable Header

♦ DB9 Serial COM Connector

♦ Supplied with DB9 Serial Cable, Documentation (CD), and Manual.

Specifications:

Module Size 2.2” x 3.1”

Power Input: +6 to +16VDC, 9VDC typical

DEMO908AP64 JUNE 28, 2004

Reference Documentation

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

DEMO908AP64_SCH_C.pdf DEMO908AP64 Module Schematic Rev. C

DEMO908AP64_UG.pdf DEMO908AP64 User Guide (this document)

MC68HC908AP64/D.pdf 68HC908AP64 Device User Guide

See the HC08 Support CD provided with this board for all the documentation and support files

provided.

GETTING STARTED

The DEMO908AP64 Module operates in two basic Modes, Run Mode or MON08 Debug Mode.

Run Mode supports user application operation from Power On or Reset condition. MON08

Debug Mode supports the development and debug of applications via the MON08 embedded

debug monitor. See the related sections below for quickly starting the module in the desired

operation mode.

The Module may be operating a Demonstration (DEMO) program when shipped from the

factory. If so the Module kit contents will include a Quick Start document explaining the

operation of the Demonstration program. The demo program operates in RUN Mode.

No matter the operating mode, the module must be powered to operate. The +5V power

indicator will only light with the module regulator powered by the input Term Block (TB1) and

the PWR_SEL option being properly configured to power the module circuits from the on-board

regulator or from the VX supply and ground connections on the J1 MCU I/O connector. Refer

to the PWR_SEL option and J1 connector chapter for more detail on these selections.

RUN MODE

RUN Mode operates the HC08 application contained in the internal flash memory from Reset

or Power On condition. Use the following settings to configure the DEMO908AP64 module for

RUN Mode to get started quickly.

1. Configure PWR_SEL option for input supply to power the module. If supply is via J1 con-

nection, install module on J1 external connection in powered down condition.

2. Connect COM port serial communication cable between module and host if needed for the

application. Launch supporting host software to for the module communication.

DEMO908AP64 JUNE 28, 2004

3. Set module options for RUN Mode:

VTST_EN Off / open / idle

MON_EN Off/ open / idle

COM_EN 2-3 (COM position)

OSC_SEL As needed for application operation, 32Khz Crystal

or 9.8304Mhz Clock

USER_EN Enabled as needed for application operation

4. Power On the Module. Application will begin to execute.

MON08 DEBUG MODE

MON08 Debug Mode operates the HC08 internal MON08 debug monitor from Power On. This

mode is possible by setting Module options or by applying a supporting development cable on

the Debug Port. For Debug cable application the MON_EN option must be Off / open / idle

and the OSC_EN option should be set according to the debug cable requirements (open or

clock selected). Use the following settings to configure the DEMO908AP64 module for MON08

Debug Mode via the COM port:

1. Configure PWR_SEL option for input supply to power the module. If supply is via J1 con-

nection, install module on J1 external connection in powered down condition. Note that the

VTST_EN option requires 9VDC minimum applied at TB1 to function correctly.

2. Connect one end of the supplied 9-pin serial cable to a free COM port on the PC. Connect

the other end of the cable to the COM port connector on the DEMO908AP64 module.

3. Install and launch the PC Hosting software for the MON08 communication interface. This

may be a C compiler with IDE and MON08 communication or another MON08 debug host-

ing type software.

4. Set the Module options for MON08 Debug Mode:

VTST_EN ON / Installed on both pins (required if the Reset

vector is not erased in the flash memory)

MON_EN ON / Installed on both pins

COM_EN 1-2 (DEBUG position)

OSC_SEL 1-2 (9.8304Mhz Clock position)

USER_EN Enabled as needed for application operation

5. Apply power to the module. This may be applied by TB1, J1, or Debug cable operation.

6. Hosting development software will establish MON08 communication now.

DEMO908AP64 JUNE 28, 2004

Software Development

Software development will require the use of an HC08 assembler or compiler and a host PC

operating a MON08 debug interface. Supplied with this board is the Motorola MCUez HC08

assembler tools along with the Axiom MON08 IDE for Windows for Debugging and Flash pro-

gramming. A demonstration or evaluation copy of a C compiler may also be provided.

A powerful source code generation tool called DriveWay™ is also provided on the support CD.

This can generate C source code for the HC08 microcontroller peripherals, based on setup.

See the DriveWayTM readme.txt file for more information.

MEMORY MAP

0x0000 -

0x005F

Direct Page Register Space.

See the 908AP64 User Manual for details

bytes

0x0060 -

0x085F

SRAM Memory space

Stack and Data Memory

bytes

0x 0860 -

0xFBFF

Flash Memory

User application memory

61K

bytes

0xFC00 –

0xFFCF

Utility Memory

Status, Control, MON08 ROM

975

bytes

0xFFD0 -

0xFFFF

Vectors and Security Memory 47

bytes

NOTE: The memory map above generally describes the MCU Memory Map. Refer to the

MC68HC908AP64 documentation for a detailed memory map.

OPERATION

The DEMO908AP64 module provides input and output features to assist in microcontroller ap-

plication development. The user has access to MCU ports through connector J1. Connector

J1 is a 40-position pass-through socket type connector mounted on the bottom of the module.

Insertion of pin headers is possible from the top or bottom of the module. This allows stacking

or connecting the module as needed. Connector J1 may be used to apply power to the mod-

ule as well as RS-232 communications signals. Care must be exercised when using the

MCU_PORT to power the module, as only regulated +5V DC should be applied to this connec-

tion. The PWR_SEL option also configures the module to provide regulated +5V to an external

device attached to connector J1.

DEMO908AP64 JUNE 28, 2004

Three option jumper blocks and 3 cut-traces setup module operation. Enabling an associated

option requires installing a jumper, or shunt, across the appropriate header pins so that both

pins are connected via the jumper. Removing the shunt disables the associated option. A cut-

trace option can be disabled by cutting the circuit trace between the cut-trace component pads

with a razor knife. Install a 0805 SMT 0-ohm resistor or modification wire with a soldering iron

to re-enable the option if needed.

POWER SUPPLY

Input power may be applied by external connection to a 2 position terminal block and 3.3V

regulator or directly from connector J1. The input supply is selected by the PWR_SEL option.

TB1 – Terminal Block

The TB1 terminal block allows external voltage to be supplied to the module. Input voltage

should be limited to +5VDC and +16VDC; +9VDC is typical. The terminal block is a 3.55mm,

screw-type, connector that accepts a maximum 18 AWG wire. An on-board voltage regulator

(VR1) converts the input voltage to the +3.3VDC used by the module.

Figure 1: TB1 Terminal Block Connector

Connector J1

Connector J1 is a 40-pin, surface-mount, socket header mounted on the bottom of the module.

The connector is mounted over plated-through holes in the PCB. The socket is a pass-through

type socket designed to allow header insertion from either the top or bottom. This provides

maximum flexibility in connecting the module to an expansion environment or test equipment.

Connector J1 provides access to all MCU signals.

Power may be supplied to the module through pins J1-1 (+V) and J1-3 (GND). Use of this op-

tion requires voltage input regulated at +3.3VDC. This input is connected directly to the mod-

ule power and ground planes. Care should be exercised not to over-drive this input. J1 can

also be used to source power from the on-board regulator to external modules. The

PWR_SEL option header determines how power is routed to and from the module.

+5VDC -

+16VDC

GND 2 Position, Screw-

Type Terminal Block

MCU_PORT

DEMO908AP64 JUNE 28, 2004

NOTE: Power output from the module is limited by the 250 mA maximum output

of the on-board voltage regulator.

PWR_SEL Jumper

The PWR_SEL jumper selects the source of power input to the module, or allows regulated

+3.3VDC to be provided to J1 for use by external circuits. The module takes voltage input

from the 2-position on-board voltage regulator or from the 40-pin MCU connector (J1). Power

input at the terminal block must be DC voltage between +5VDC and +16VDC. Power input on

the MCU connector must be regulated voltage between +3.0VDC and +3.3VDC. The

MCU_PORT connector power input allows use of batteries, or other alternate sources, to

power the module.

CAUTION: Module damage may occur if the MCU_PORT power input pin (J1-1)

is over-driven.

The PWR_SEL option jumper provides 3 possible configurations; source power from the PWR

connector, source power from J1, or source power from PWR and supply power to J1. The

figures below show the settings for each configuration.

Figure 2: PWR_SEL Jumper Settings

1 • •

2 • •

Module powered from external +3.0VDC - +3.3VDC input con-

nected to J1-1 (+) and J1-3 (-)

1 • •

2 • •

Module powered from external +5VDC - +16VDC connected to

TB1 Terminal Block. J1-1 is open or not connected.

1 • •

2 • •

Module powered from external +5VDC - +16VDC connected to

TB1 Terminal Block. Module provides +3.3VDC output (up to 50

mA) at pin J1 for use by external circuits.

NOTE: Power output from the module is limited by the 250 mA maximum out-

put of the on-board voltage regulator.

Reset Switch

The RESET switch provides a method to apply an asynchronous reset to the module. Press-

ing the RESET switch applies a low voltage level to the RST* input. A resistor tied to the high

voltage rail prevents spurious RESET input to the MCU. A capacitor tied to ground holds the

signal line low for a sufficient amount of time.

DEMO908AP64 JUNE 28, 2004

Timing

The DEMO908AP64 provides two timing sources. A 9.8304 MHz clock oscillator, at X1, sup-

ports debug monitor operation. A 32.768 kHz crystal oscillator at Y1 provides the base oper-

ating frequency to the MCU for normal operation. The user should refer to the HC08 device

user manual for information on frequency selection. The OSC_SEL jumper selects the timing

input source.

Figure 3: OSC_SEL Jumper Settings

3Selects X1 Timing Input – 9.8304 MHz

1Selects Y1 Timing Input – 32.768 kHz

RS-232 Communications

The DEMO908AP64 module provides a single SCI communications port. This port is con-

nected to the MCU_PORT connector and to the COM connector. An RS-232 translator (U3)

provides RS-232 signal level to TTL/CMOS logic level translation on the COM port. Signals

TXD and RXD are routed between the transceiver and the MCU. These signals are also

routed to connector J1. RS-232 communication signals input on J1 must be TTL/CMOS logic

levels; no translation support is provided through this path. The transceiver output may also

be driven off-module if a suitably interface is used. As added development support, hardware

flow control signals RTS and CTS are available on the logic side of U3. These signals are

routed to vias located near the transceiver (U3). RTS has been biased properly to support 2-

wire RS-232 communications.

Use of the J1 connector to input RS-232 signals requires disabling the on-board RS-232 trans-

ceiver to prevent signal corruption. Disabling the on-board transceiver is accomplished by re-

moving the COM_SEL jumper. Details on the COM_SEL jumper are shown in the table below.

Table 2: COM Connections

HC08 Port COM Signal I/O PORT

Connector

PTB2/TXD TXD OUT J1-5

PTB3/RXD RXD IN J1-7

DEMO908AP64 JUNE 28, 2004

COM Connector

A standard 9-pin Dsub connector provides external connections for the SCI port. The SCI port

provide an alternate interface for use with the MON08 monitor. Component U3 provides RS-

232 translation services. The figure below details the DB9 connector.

Figure 4: COM Connector

TXD 27RTS

RXD 38CTS

49NC

GND 5

Female DB9 connector that interfaces to the HC08 internal SCI1 serial

port via the U2 RS232 transceiver. It provides simple 2 wire asynchro-

nous serial communications without flow control. Flow control is provided

at test points on the module.

Pins 1, 4, and 6 are connected together for status NULL to the host.

The communications mode of the COM port is determined by the COM_SEL jumper. This 3-

pin jumper allows the user to select between SCI serial communications and single-wire

MON08 communications.

Figure 5: COM_SEL Jumper Settings

3Selects MON08 Port PTA0 Communications on COM

1Selects SCI Port Communications on COM

Single-Wire MON08 Communications

The module provides MON08 access through the COM connector. MON08 on the COM port

is enabled by the COM_SEL, the MON_EN, OSC_SEL, and VTST_EN option jumpers. This

allows MON08 debugging without the expense of a 3rd-party MON08 pod. The table above

shows the selection settings for the COM_SEL jumper. See the MON08 Debug Mode section

for more details.

Figure 6: MON_EN Jumper Setting

ON MON08 Monitor Mode Enabled

1 2 OFF MON08 Monitor Mode Disabled

DEMO908AP64 JUNE 28, 2004

VTST_EN

The VTST _EN jumper enables the voltage level necessary to place the MCU in MON08

monitor mode. An 8.2V zener diode at D1 sets the appropriate voltage level on the MCU IRQ*

signal line. When using the MON08 monitor mode, the input voltage on TB1 must be 9VDC

minimum.

Figure 7: VTST_EN Jumper Setting

ON IRQ* signal line set to 8.2V. MON08 monitor mode force entry

enabled.

1 2 OFF IRQ* signal line pulled up to VDD. MON08 monitor mode available

if Reset vector is erased.

The following table details the settings necessary to configure the MCU for MON08 monitor

mode operation via the COM port.

Figure 8: Single-Wire MON08 Setup

MON_EN ON Single-Wire MON08 Enabled

VTST_EN ON MCU in Monitor Mode

COM_SEL 3MON08 Signaling Enabled

OSC_SEL 39.8304 MHz Oscillator selected

NOTE: To utilize the single-wire MON08 monitor mode, the input voltage must

exceed 9.0VDC.

USER Components

The DEMO908AP64 provides 2 user push switches, 2 LED indicators, a potentiometer, and

photocell circuit for user application. To isolate assigned I/O ports from these features, the

USER EN option is provided.

Table 3: User EN Option Settings

Jumper On Off MCU PORT

User 1 Enable SW1 Disable SW1 PTD0 (U1-3)

User 2 Enable SW2 Disable SW2 PTD1 (U1-2)

User 3 Enable LED1 Disable LED1 PTB4 (U1-13)

User 4 Enable LED2 Disable LED2 PTB5 (U1-8)

User 5 Enable RV1 Disable RV1 PTA4 (U1-29)

User 6 Enable RZ1 Disable RZ1 PTA5 (U1-28)

DEMO908AP64 JUNE 28, 2004

SW1 and SW2 Pushbutton Switches

Two push button switches provide momentary active low input for user applications. Switches

SW1 and SW2 are enabled to the HC08 I/O ports by the USER option bank. SW1 and SW2

provide input to HC08 I/O ports PTD0/KBI0 and PTD1/KBI1 respectively.

LED1 and LED2 Indicators

Indicators LED1 and LED2 are enabled from HC08 I/O ports by the USER EN option. The

LED indicators are active low and will illuminate when a logic low (0 value) signal is driven from

the respective MCU I/O port. MCU ports PTB4/T1CH0 and PTB5/T1CH1 drive LED1 and

LED2 respectively.

RV1 Potentiometer

A 5k Ω, thumb-wheel potentiometer at RV1 provides variable resistance output for user

applications. The device provides a 0 to VDD (+5V typically) output to the PTA4/ADC4 input

when enabled.

RZ1 Photocell

RZ1 is visible light sensitive photocell with an amplifying OPAMP circuit that provides a

variable voltage output for user applications. Circuit output voltage of .5V to VDD typically and

is inversely proportional to light intensity on the surface of the RZ1 device (VDD = Dark). When

enabled the circuit output voltage is provided to MCU port PTA5/ADC5 input for user

application.

Infrared Transceiver

A IRDA serial infrared transceiver at U4 supports infrared serial communications of 2.4K – 115.2 Kbps

to a typical distance of 1 meter. The transceiver (ZHX1010) combines an infrared emitting diode

(IRED), a PIN photodiode detector, a digital AC coupled IRLED driver, and a receiver/decoder with

noise discrimination circuitry in a single, miniature package.

The IRDA transceiver connects to the MCU I/O signals PTC7/SCRXD and PTC6/SCTXD. Both signals

are also available at connector J1. The IRDA transceiver may be removed from the MCU I/O connec-

tions by opening cut-traces CT2 and CT3. The cut-traces maybe restored by installing a 0805 SMT 0-

ohm resistor or wire modification with a solder iron.

DEMO908AP64 JUNE 28, 2004

APPENDIX A

I/O PORT CONNECTORS

MON08 PORT

The MON08 port is a 16-pin header compatible with a Motorola MON08 Monitor Mode Pod.

This allows the connection of a background debugger for software development, programming,

and debugging in real-time without using HC08 I/O resources.

1 2 GND

3 4 RST*

See the HC08 Reference Manual for complete

MON08 documentation

5 6 IRQ1*

7 8

910 PTA0

11 12 PTA2

OSC1 13 14 PTA1

VDD 15 16 PTB0

MCU I/O Port Connector

This port connector provides access to DEMO908AP64 I/O signals.

VX 1 2 IRQ1*

GND 3 4 RST*

PTB2/TXD 5 6

PTB3/RXD 7 8

PTD0/KBI0 910 PTA0/ADC0

Note:

All user component signals

are available at connector

PTD1/KBI1 11 12 PTA1/ADC1

PTB4/T1CH0 13 14 PTA2/ADC2

PTB5/T1CH1 15 16 PTA3/ADC3

PTC3/MOSI 17 18 PTA4/ADC4

PTC2/MISO 19 20 PTA5/ADC5

PTC5/SPSCK 21 22 PTA6/ADC6

PTC6/SS* 23 24 PTA7/ADC7

PTD1/KBI2 25 26 PTB0/SDA

PTD3/KBI3 27 28 PTB1/SCL

PTD4/KBI4 29 30 PTD6/KBI6

PTD5/KBI5 31 32 PTD7/KBI7

33 34 PTB6/T2CH0

35 36 PTB7/T2CH1

37 38 PTC7/SCRXD

39 40 PTC6/SCTXD

DEMO908AP64 JUNE 28, 2004

APPENDIX B

Mechanical Details

DEMO908AP64 JUNE 28, 2004

APPENDIX C

BILL OF MATERIALS

Item Qty Title Reference Mfr Name Mfr P/N

1 3 Cap, Elec, 10uF, 10V, Tant, SMA C2, C9, C12 Kemet T491A106K010

2 5 Cap, Mon, .1uF, 50V, 0805 C1, C5, C8, C10, C11 Meritek MA080525U104M500

3 4 Cap, Mon, 1uF, 16V, 0805 C3, C4, C6, C7

4 3 Res, Carbon, 330 ohm, 1/16W, 5%, 0805 R4, R5, R7

5 1 Res, Carbon, 4.7K ohm, 5%, 0805 R2

6 2 Res, Carbon, 10K ohm, 5%, 0805 R3, R6

7 1 Res, Carbon, 1M ohm, 5%, 1/16w, 0805 R1

8 1 Resonator, Cer, 16.00MHz, w/Caps, 3Pos, SMT Y1 Panasonic EFO-BM1605E5

9 1 Diode, Schottky, 30V, 200mA, BAT54C, Com.

Cathode, SOT23

D1 General Semi-

conductor

10 3 LED, Green, w/reflector, 1206, SMT LED1, LED2, +3.3V Rohm SML-010MTT86

11 1 IC, Dual RS232 XCVR, 3.3V, 16SOIC U2 Intersil ICL3232ECBN

12 1 IC, MCU, 68HC908AP64, 44LQFP U1 Motorola MC9S08G60

13 1 VReg, LDO, 3.3V, 250mA, 8 SOIC VR1 STM L4931CD33

14 3 Sw, PB, 5mm Sq, Thru SW1, SW2, RESET E-Switch EG1827

15 6 Hdw, Shunt, 2 Pos, .1" Generic

16 2 Hdw, Hex Standoff, 4-40 Thd, .375", Al Keystone 2202

17 2 Hdw, Screw, 4-40, 1/4", Pan Head, SS, Captive

Washer

19 1 Conn, 2x20 Socket Hdr, Pass Thru, .1", Bottom En-

try, SMT

J1 Samtec SSM-120-L-DV-K-BE-A

20 1 Conn, Term Blk, 2Pos, 3.55mm, thru TB1 On Shore Tech-

nology

ED555/2DS

21 1 Conn, Dsub, 9P, F, RA, PCB Mount SCI1

22 1 Conn, 1x3 Pin Header, .1" Ctr, Thru PWR_SEL

23 1 Conn, 2x3 Pin Header, .1" Ctr, Thru BDM_PORT

24 1 Conn, 2x4 Pin Header, .1" Ctr, Thru USER

25 1 PCB, 68HC908AP64DEMO Module