Axiom DEMO9S12XDT512 User manual

DOC-0350-010, REV E
Email: www.axman.com
Support: [email protected]
DEMO9S12XDT512
DEVELOPMENT BOARD FOR FREESCALE
MC9S12XDT512
USER GUIDE

DEMO9S12XDT512 JULY 18, 2008
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CONTENTS
CAUTIONARY NOTES ..............................................................................................................4
TERMINOLOGY.........................................................................................................................4
FEATURES................................................................................................................................5
REFERENCES...........................................................................................................................6
GETTING STARTED..................................................................................................................6
OPERATING MODES................................................................................................................6
RUN MODE........................................................................................................................... 7
DEBUG MODE......................................................................................................................7
MEMORY MAP ..........................................................................................................................8
SOFTWARE DEVELOPMENT...................................................................................................8
DEVELOPMENT SUPPORT......................................................................................................9
INTEGRATED BDM .............................................................................................................. 9
BDM_PORT HEADER........................................................................................................... 9
POWER....................................................................................................................................10
POWER SELECT................................................................................................................ 10
PWR_SEL........................................................................................................................10
VX_EN..............................................................................................................................11
RESET SWITCH ......................................................................................................................11
LOW VOLTAGE RESET..........................................................................................................11
TIMING.....................................................................................................................................11
COMMUNICATIONS................................................................................................................12
RS-232 ................................................................................................................................ 12
COM CONNECTOR.........................................................................................................13
LIN COMMUNICATIONS..................................................................................................... 13
LIN_EN.............................................................................................................................13
CAN COMMUNICATIONS................................................................................................... 14
MODE.......................................................................................................................................14
VRH/VRL..................................................................................................................................14
USER I/O..................................................................................................................................15
SWITCHES ......................................................................................................................15
LED’S...............................................................................................................................15
POT..................................................................................................................................16
LIGHT SENSOR...............................................................................................................16
USER SIGNALS.................................................................................................................. 16
USER ENABLE ................................................................................................................... 16
MCU I/O PORT.........................................................................................................................17
APPENDIX A............................................................................................................................19

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TOP SILKSCREEN ............................................................................................................. 19
TABLE OF FIGURES
Figure 1: USB_SPEED Option Header ..................................................................................................................... 9
Figure 2: BDM_PORT ............................................................................................................................................... 9
Figure 3: PWR_SEL Option Header........................................................................................................................ 10
Figure 4. VX_EN Option Header............................................................................................................................ 11
Figure 5. CLK_SEL Option Header........................................................................................................................ 12
Figure 6: COM Connector ....................................................................................................................................... 13
Figure 7: LIN Connector.......................................................................................................................................... 13
Figure 8. LIN_EN Option Header ........................................................................................................................... 13
Figure 9. CAN_PORT Connector........................................................................................................................... 14
Figure 10. MODE Option Header........................................................................................................................... 14
Figure 11: MCU I/O PORT – J1............................................................................................................................... 17
Figure 12. MCU I/O PORT – J2.............................................................................................................................. 18
TABLE OF TABLES
Table 1: Run Mode Setup.......................................................................................................................................... 7
Table 2: BDM Mode Setup........................................................................................................................................ 8
Table 3: Memory Map................................................................................................................................................ 8
Table 4: COM Connections..................................................................................................................................... 12
Table 5: ATD Reference Voltage............................................................................................................................. 15
Table 6: User I/O ..................................................................................................................................................... 16
Table 7: USER Option Header................................................................................................................................ 17
Revision History
Date Rev Comments
March 24, 2005 A Initial Release
March 31, 2005 B Added corrections noted in “Out-of-Box” review. Removed reference
to serial cable, Demo program and Troubleshooting section.
May 9, 2005 C Removed Motorola reference in document
August 15, 2005 D Corrected SCI0 and SCI1 assignments in COM section.
July 18, 2008 E Updated cover page, removed Appendix B, minor text and formatting
corrections

DEMO9S12XDT512 JULY 18, 2008
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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 DEMO9S12XDT512 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 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
nearby electronic equipment. If such interference is detected, suitable mitigating meas-
ures should be taken.
TERMINOLOGY
This development module utilizes option select jumpers to configure default board operation.
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 jumpers
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 install a
suitably sized 0-ohm resistor or attach a wire across the pads.
Signal names followed by an asterisk (*) denote active-low signals.

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FEATURES
The DEMO9S12XDT512 is an evaluation or demonstration board for the Freescale
MC9S12XDT512 MCU. Development of applications is quick and easy with the integrated
USB-Multilink BDM, sample software tools, and examples. A standard BDM debug port is also
provided, but not populated, to allow use of an external BDM pod. Two 40-pin connectors al-
low the demonstration board to be connected to an expanded evaluation environment or to
external test equipment.
Features:
♦MC9S12XDT512 MCU, 80 LQFP
♦X-GATE Co-Processor
♦512 KB Flash EEPROM
♦4KB EEPROM
♦32 KB SRAM
♦59 GPIO lines
♦Enhanced Capture Timer/PWM
♦SCI and SPI Communications Ports
♦Key Wake-up Port
♦Single Wire BDM Interface
♦CAN 2.0 A/B Module
♦Analog to Digital Converter
♦80 MHz Bus Operation using internal PLL
♦Integrated USB-Multilink BDM for DEBUG access
♦Optional power from USB bus through USB-Multilink BDM
♦Optional on-board, regulated +5V power supply for stand-
alone operation
♦Optional power through MCU I/O connector
♦Power Input Selection
♦USB Connector
♦2.0mm barrel connector
♦MCU I/O Connector
♦On-Chip Voltage Regulator with low-voltage detect (LVD)
and low-voltage interrupt (LVI)
♦4 MHz crystal oscillator in low-power Pierce configuration
default
♦Optional full-power Pierce configuration (requires installation of
R9)
♦Socket for optional full- or half-can clock oscillator
♦RS-232 serial port w/ DB9 connector
♦8-Ch, 10-bit, ATD with external trigger capability
♦16-Ch, 10-bit, ATD with external trigger capability
♦Enhanced Capture Timer with IC, OC, PWM and Pulse Accumulate capabilities
♦User Components Provided
♦4 Position DIP Switch
♦3 Push Button Switches: 2 User, RESET
♦7 LED Indicators: 4 User, 2 USB, +5V
♦Jumpers
♦Enable/Disable User functions
♦PWR_SEL
♦VX_EN
♦LIN_EN
♦CLK_SEL

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♦USB_SPEED
♦Connectors
♦Two 40-pin, pass-thru type, MCU I/O Connectors, providing access to most MCU IO signals
♦2.0mm barrel connector power input
♦USB Type-B connector
♦6-pin BDM interface connector (not installed)
♦DB9 COM connector
♦2 4-pos LIN connectors
♦3-pos CAN connector
♦Supplied with LIN Cable, USB Cable, Documentation (CD), and Manual
Specifications:
Module Size 4.0” x 3.1”
Power Input: +6VDC to +18VDC
NOTE: LIN functionality supported when powered from PWR connector only
REFERENCES
Reference documents are provided on the support CD in Acrobat Reader format.
DEMO9S12XDT512_UG_A.pdf DEMO9S12XDT512 User Guide (this document)
DEMO9S12XDT512QSG.pdf DEMO9S12XDT512 Quick Start Guide
DEMO9S12XDT512 _SCH_D.pdf DEMO9S12XDT512 Schematic Rev. D
9S12XDP512V2_ZIP.zip DEMO9S12XDT512 Device User Guide
AN2546.pdf S12X Load RAM and Execute (LRAE) Program Appli-
cation Note
AN2615.pdf HCS12 and S12X Family Compatibility
AN2685.pdf How to Configure and Use the XGATE on S12X De-
vices
AN2708.pdf An Introduction to the External Bus Interface on the
HCS12X
GETTING STARTED
To get started quickly, please refer to the DEMO9S12XDT512 Quick Start Guide. This quick
start will show the user how to connect the board to the PC, run a LED test program, install the
correct version of CodeWarrior Development Studio, and load an Analog to Digital (ATD) test
program using CodeWarrior.
OPERATING MODES
The DEMO9S12XDT512 board operates in two operating modes: Run Mode, or Debug Mode.
Run Mode allows user application operation from Power-On or Reset. Debug Mode supports
the development and debug of applications. See the related sections below for quickly starting
the board in the desired operation mode.
The board has been preloaded with a demonstration program. The demo program operates in

DEMO9S12XDT512 JULY 18, 2008
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the Run Mode. The +5V LED will light when power is applied to the board.
RUN MODE
Run mode allows user application to function when power is applied to the board. Use the
following settings to configure the DEMO9S12XDT512 board for RUN Mode to get started
quickly.
1. Connect auxiliary equipment to board as required by application.
2. Configure the board option jumpers for run mode.
Table 1: Run Mode Setup
PWR_SEL Pin1 – Pin2 (VB)
CLK_SEL Pin1 – Pin2 (Y1)
VX_EN Off
USER As Required
LIN_EN As Required
USB_SPEED Pin1 – Pin2 (HIGH)
NOTE: See Power section below to configure power input from PWR connector or from J1 connector.
3. Apply power to the board.
4. The programmed application will begin to execute.
Debug Mode
Debug Mode supports application development and debug. Debug mode is available to the
user through the integrated USB-Multilink BDM or the by using an external HCS12 BDM cable.
Use of the integrated USB-Multilink BDM requires only a host PC with an available USB port
and an A/B type USB cable. A 6-pin BDM interface header (BDM_PORT) supports the use of
an external HCS12 BDM cable. The BDM_PORT header is not installed in default configura-
tion. The steps below describe using the integrated USB-Multilink BDM.
1. Connect auxiliary equipment to board as required by application.
2. Install and launch P&E PKG12Z tool set, CodeWarrior Development Studio, or other soft-
ware capable of communicating with the HCS12 MCU.
3. Configure the board option jumpers for DEBUG mode.

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Table 2: BDM Mode Setup
PWR_SEL Pin1 – Pin2 (VB)
CLK_SEL Pin1 – Pin2 (Y1)
VX_EN Off
USER As Required
LIN_EN As Required
USB_SPEED Pin1 – Pin2 (HIGH)
NOTE: Refer to the Development Support section below for details on using an external HCS12 BDM cable.
4. Connect the supplied USB cable between an available USB port on the host PC and the
USB connector on the board.
5. Hosting development software will establish DEBUG communication.
6. If the P&E Connection Assistant appears, ensure the following settings
Interface: USB HCS08/HCS12 MULTILINK – USB PORT
Port: USB1 : USB-ML-12 REF : DEMO9S12XDT512
CPU: HC12/HCS12 - Autodetect Device Type
MEMORY MAP
The table below shows the default memory map for the MC9S12XDP512 immediately out of
reset.
Table 3: Memory Map
$0000 -
$07FF REGISTERS 2 KB
$0800 -
$0FFF EEPROM 4 KB 4 – 1Kb pages between 0x800 –
0xBFF
$1000 -
$3FFF RAM 12 KB 5 – 4Kb pages between 0x1000 –
0x1FFF
$4000 -
$7FFF FIXED FLASH 16 KB 1K, 2K, 4K, 8K Protected Boot
Sector
$8000 -
$BFFF FLASH EEPROM
PAGE WINDOW 16 KB 32 – 16Kb pages
$C000 -
$EFFF FIXED FLASH 16 KB 2K, 4K, 8K, 16K Protected Boot
Sector
$FF00 -
$FFFF Vectors
BDM (if active) 255 bits
SOFTWARE DEVELOPMENT
Software development will require the use of an assembler or compiler supporting the HCS12
instruction set and a host PC operating a debug interface. The assembler or compiler must
also support the HC(S)12 X-Gate instruction set. CodeWarrior Development Studio and Axiom
IDE for Windows for Debugging and Flash programming are supplied with this board.

DEMO9S12XDT512 JULY 18, 2008
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DEVELOPMENT SUPPORT
Application development and debug for the target MC9S12XDT512 is supported through the
BDM interface. The BDM interface consists of an integrated USB-Multilink BDM and a 6-pin
interface header (BDM_PORT) to connect a HCS12 BDM cable.
Integrated BDM
The DEMO9S12XDT512 board features an integrated USB-Multilink BDM from P&E Micro-
computer Systems. The integrated USB-Multilink BDM supports application development and
debugging via background debug mode. All necessary signals are provided by the integrated
USB-Multilink BDM. A USB, type B, connector provides connection from the target board to
the host PC.
The integrated USB-Multilink BDM provides +5V power and ground to target board eliminating
the need to power the board externally. Power from the USB-Multilink BDM is derived from the
USB bus; therefore, total current consumption for the target board, and connected circuitry,
must not exceed 500mA. This current limit describes the current supplied by the USB cable to
the BDM, target board, and any connected circuitry. Excessive current drain will violate the
USB specification. Damage to the host PC USB hub or the target board may result.
The communications speed over the USB bus is controlled by the USB_SPEED header.
When shipped from the factory, the DEMO9S12XDT512 is configured for high-speed opera-
tion. If the user encounters a communication failure, USB communication speed may be re-
duced by setting this option jumper to Full.
Figure 1: USB_SPEED Option Header
USB_SPEED Configuration:
HIGH 123FULL 1 – 2: Selects USB High-speed communications
2 – 3: Selects USB Full-speed communications
CAUTION: Do not allow total current drain to exceed 500mA when powered from the
USB-Multilink BDM .
BDM_PORT Header
A compatible HCS12 BDM cable can also attach to the 6-pin BDM interface header
(BDM_PORT). This header is not installed in default configuration. The figure below shows
the pin-out for the DEBUG header
Figure 2: BDM_PORT
MODC/BKGD 1 2 GND
3 4 RESET*
5 6 VDD
See the HC12 Reference Manual for
complete DEBUG documentation
NOTE: This header is not installed in default configuration.

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POWER
The DEMO9S12XDT512 is designed to be powered through the USB-Multilink BDM during
application development. A 2.0mm barrel connector has been applied to support stand-alone
operation and to support LIN functionality. The board may also be powered through connector
J1. This connection may also be used to supply power from the board to external circuitry.
During application development, the board should be configured to draw power from the USB-
Multilink BDM. The barrel connector may be used to support LIN functionality during applica-
tion development. The barrel connector input is also used to provide power during stand-alone
operation.
POWER SELECT
Power may be applied to the board through the integrated USB-Multilink BDM circuitry, a
2.0mm barrel connector, or through connector J1. Power selection is achieved using 2 selec-
tion headers: PWR_SEL option header and the VX_EN option header.
PWR_SEL
The PWR_SEL option header selects power input either from the integrated USB-Multilink
BDM circuitry or from the on-board voltage regulator. The figure below details the PWR_SEL
header connections.
Figure 3: PWR_SEL Option Header
VB PW
123
PWR_SEL
CONFIGURATION
1 – 2: Selects power input from USB-ML12
2 – 3: Selects power input from on-board regulator or J1
NOTE: Set PWR_SEL jumper to VB during application development. Use barrel connector in-
put (PWR) to support LIN functionality as needed.
Power from the integrated BDM is drawn from the USB bus and is limited to 500 mA. This cur-
rent limit describes the total current supplied over the USB cable to the BDM, target board and
any connected circuitry. Current drain in excess of 500 mA will violate the USB specification
and may result in damage to the host PC or the target board. At minimum, excessive current
drain will cause the host PC to spontaneously reboot. Power is provided through the inte-
grated BDM to the target board.
The on-board voltage regulator (VR1) accepts power input through a 2.0mm barrel connector
(PWR). Input voltage may range from +6V to +18V. The voltage regulator (VR1) provides a
+5V fixed output limited to 250mA. Over-temperature and over-current limit built into the volt-
age regulator provides protection from excessive stress. Consider the maximum output cur-
rent limit of VR1 when attempting to power off-board circuitry through connector J1.