Axiom DEMO9S08LG32 User manual

D O C - 0469- 0 1 0 , R E V D
Web Site: www.axman.com
Support: [email protected]
DEMO9S08LG32
Demonstration Board for Freescale MC9S08LG32
Microcontroller
USER GUIDE

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CONTENTS
CAUTIONARY NOTES ..............................................................................................................4
TERMINOLOGY.........................................................................................................................4
FEATURES................................................................................................................................5
REFERENCES...........................................................................................................................6
MEMORY MAP ..........................................................................................................................6
SOFTWARE DEVELOPMENT...................................................................................................6
DEVELOPMENT SUPPORT......................................................................................................7
INTEGRATED BDM .............................................................................................................. 7
USB-BDM OPTION HEADERS......................................................................................... 7
BDM_PORT HEADER........................................................................................................... 7
POWER......................................................................................................................................8
POWER SELECT.................................................................................................................. 8
PWR_SEL......................................................................................................................... 8
VX_EN............................................................................................................................... 9
RESET SWITCH ......................................................................................................................10
LOW VOLTAGE RESET..........................................................................................................10
TIMING.....................................................................................................................................10
COMMUNICATIONS................................................................................................................10
USB SERIAL LINK .............................................................................................................. 10
RS-232................................................................................................................................ 11
COM CONNECTOR........................................................................................................ 11
COM_SEL....................................................................................................................... 11
LCD..........................................................................................................................................12
CONTRAST......................................................................................................................... 12
USER I/O..................................................................................................................................13
BUZZER.............................................................................................................................. 13
POTENTIOMETER.............................................................................................................. 14
USER LED’S ....................................................................................................................... 14
PUSHBUTTON SWITCHES................................................................................................ 15
MCU I/O PORT.........................................................................................................................16
LCD ENABLE OPTION HEADER............................................................................................17

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FIGURES
Figure 1: Memory Map................................................................................................................6
Figure 2: JP1 Option Header......................................................................................................7
Figure 3: BDM_PORT Header....................................................................................................8
Figure 4: V_SEL Option Header.................................................................................................8
Figure 5: VX_EN Option Header ................................................................................................9
Figure 6: COM Connections.....................................................................................................11
Figure 7: COM1 Connector.......................................................................................................11
Figure 8: COM_SEL Option......................................................................................................12
Figure 9: VLL3_SEL Option Header.........................................................................................13
Figure 10: BUZ Option Header.................................................................................................13
Figure 11: ADC Option Header.................................................................................................14
Figure 12: User1 Option Header...............................................................................................14
Figure 13: User2 Option Header...............................................................................................15
Figure 14: MCU I/O PORT –J1................................................................................................16
Figure 15: LCD Enable Option Header –JP1...........................................................................18
REVISION
Date
Rev
Comments
November 21, 2008
A
Initial Release
December 02, 2008
B
Updated DEMO9S08LG32 connector pins, features, MCU I/O port,
and demonstration board diagram.
February 24, 2009
C
Minor updates to format and corrections to content . Added Notes and
Caution boxes
April 7, 2009
D
Updated COM_SEL header silk text. Corrected description of JP3
Option header

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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 DEMO9S08LG32 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
measures 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 a plastic shunt that fits across 2 pins and the shunt is
installed so that the 2 pins are connected with the shunt.
Jumper off, out, or idle = jumper or shunt is installed so that only 1 pin holds the shunt, no 2
pins are connected, or jumper is removed. It is recommended that the jumpers be placed
idle 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 DEMO9S08LG32 is a demonstration board for the MC9S08LG32 microcontroller.
Application development is quick and easy with the integrated USB-BDM, sample software
tools, and examples. An optional BDM_PORT port is also provided to allow use of a
BDM_PORT cable. One, 80-pin connector provides access to all IO signals on the target
MCU.
MC9S08LG32, 80 LQFP
32K Bytes Flash
2K Bytes RAM
Internal Oscillator
On-Board 4x40 Custom LCD Glass
Integrated P&E USB-BDM
BDM_PORT header for BDM cable support
MCU_PORT pin header for access to MCU IO
signals
On-board +5V regulator
Optional Power from USB-BDM or MCU_PORT
connector
Power Input Selection Jumpers
Power input from USB-BDM
Power input from on-board regulator
Power input from Connector J1
Optional Power output through Connector J1
User Components Provided
10 Push Switches; 8 User, 1 Reset, 1 IRQ
12 LED Indicators; 8 User, VDD, IRQ, USB, and reset
5K ohm POT w /LP Filter for ADC input
LCD Glass Contrast POT
2.3kHz Piezo Buzzer
User Option Jumpers to disconnect Peripherals
User Option Jumpers to disconnect LCD Signals
Connectors
80-pin MCU I/O Pin Header
2.0mm Barrel Connector
BDM_PORT Connector for External BDM Cable
USB Connector
DB9 Connector (not installed)
Specifications:
Board Size 5.5” x 4.5”
NOTE:
Manual LCD contrast control requires +12V power input at VIN barrel
connector.

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REFERENCES
Reference documents are provided on the Axiom Support web site Acrobat Reader format.
These documents may be accessed at www.axman.com/support.
DEMO9S08LG32_UG.pdf DEMO9S08LG32 User Guide (this document)
DEMO9S08LG32 _SCH_A.pdf DEMO9S08LG32 Schematic Rev. A
DEMO9S08LG32_Silk_A.pdf DEMO9S08LG32 Top Silk, Rev A
AppsDemo.s19 CodeWarrior LCD Demo Program Object Code
MEMORY MAP
The table below shows the default memory map for the MC9S08LG32 immediately out of
reset. Refer to the MC9S08LG32 Data Sheet (DS) for further information.
Figure 1: Memory Map
$0000 -
$005F
Direct Page
Registers
$0060 -
$081F
RAM
1980 Bytes
$0820 -
$085C
LCD Registers
$0860 -
$17FF
Unimplemented
$1800 -
$187A
High Page Registers
$187B -
$7FFF
Unimplemented
$8000 -
$BFFF
FLASH A
$C000 -
$FFFF
FLASH B
SOFTWARE DEVELOPMENT
Software development requires the use of a compiler or an assembler supporting the HCS08
instruction set and a host PC operating a debug interface. CodeWarrior Development Studio
for Microcontrollers is supplied with this board for application development and debug. Refer
to the supporting CodeWarrior documentation for details on use and capabilities.

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DEVELOPMENT SUPPORT
Application development and debug for the target MC9S08LG32 is supported through the
background debug mode (BDM) interface. The BDM interface consists of an integrated USB-
Multilink BDM and a 6-pin interface header (BDM_PORT). The BDM_PORT header allows
connecting a HCS12/HCS08 BDM cable.
Integrated BDM
The DEMO9S08LG32 board features an integrated USB-Multilink BDM from P&E
Microcomputer 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 power and ground to the 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 circuit, the target board, and any connected circuitry. Excessive current drain will
violate the USB specification causing the bus to disconnect. Damage to the host PC USB hub
or the target board may result.
USB-BDM OPTION Headers
Option header JP3 connects two timer channels to the USB-BDM to facilitate the Signal
Analyzer functionality. Installing an option jumper shunt enables the selected timer channel to
the BDM circuitry.
Figure 2: JP3 Option Header
DATA1


TPM2CH4 input to Signal Analyzer


TPM2CH3 input to Signal Analyzer
DATA2
BDM_PORT Header
A compatible HCS12 BDM cable may also attach to the 6-pin BDM interface header
(BDM_PORT). Figure 3 below shows the pin-out for the BDM_PORT header.

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Figure 3: BDM_PORT Header
BKGD
1
2
GND
Refer to MC9S08LG32 Reference
Manual complete for details
3
4
RESET*
5
6
VDD
POWER
The DEMO9S08LG32 uses several methods to apply power to the board. An option header
allows selection between the various power inputs. For application development and debug,
the board may be powered from the USB BDM. The 2.0mm, center-positive, barrel connector
(VIN) supports stand-alone operation and higher power requirements. Power may also be
applied to connector J1 or the board may be configured to supply power from connector J1 to
external circuitry.
CAUTION:
Damage to the board may result if voltages greater than +5.5V are applied
at the connector J1 input.
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
selection headers: the PWE_SEL option header and the VX_EN option header.
PWR_SEL
The PWR_SEL option header allows the user to select power input either from either an
external power source connected to the VIN connector or from the integrated USB-BDM.
Figure 4 below details the PWR_SEL header connections.
Figure 4: V_SEL Option Header
VR1
VB
PWR_SEL



Enable power to board from external power supply
PWR_SEL



Enable power to board from Integrated USB-BDM

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CAUTION:
Total power from the USB-BDM is limited to 500 mA. Exceeding this limit
violates the USB specification and will cause the USB bus to disconnect.
Damage to the target board and the host PC may result.
Power from the integrated BDM is drawn from the USB bus and is limited to 500 mA. This
current limit accounts for the total current supplied over the USB cable to the BDM circuit, the
target board, and any connected circuitry. Current drain in excess of 500 mA will violate the
USB specification and will cause the USB bus to disconnect. This will cause the board to
exhibit power cycling where the board appears to turn-on then off continually. Damage to the
host PC or the target board may also result.
Power input to the VIN barrel connector should not exceed +12V. LCD contrast is connected
directly to the VIN power input.
CAUTION:
Voltage input exceeding +12V applied to VIN may damage the target board
VX_EN
The VX_EN option header is a 2-pin jumper that connects or disconnects input J1-1 directly to
the target board voltage rail. J1-3 connects directly to the target board ground plane. Use of
this feature requires a regulated input power source. This power input is decoupled to
minimize noise but is not regulated or protected. Care should be exercised when using this
feature; no protection is applied on this input and damage to the target board may result if
excessive voltage is applied. Also, do not attempt to power the target board through this
connector while also applying power through the USB-Multilink BDM or the PWR connector;
damage to the board may result.
Power may also be sourced to off-board circuitry through the J1 connector. The current
supplied from the USB bus or the on-board regulator limits current available to external
circuitry. Excessive current drain may damage the target board, the host PC USB hub, or the
on-board regulator. The figure below details the VX_EN header connections.
Figure 5: VX_EN Option Header
ON
OFF
Enabled
Disabled
VX_EN

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CAUTION:
Do not exceed available current from USB-BDM or on-board regulator when
sourcing power through connector J1 to external circuitry.
RESET SWITCH
The RESET switch applies an asynchronous RESET to the MCU. The RESET switch is
connected directly to the RESET* input on the MCU. Pressing the RESET switch applies a
low voltage level to the RESET* input. A pull-up bias resistor allows normal MCU operation.
Shunt capacitance ensures an adequate input pulse width.
LOW VOLTAGE RESET
The MC9S08LG32 utilizes an internal Low Voltage Detect (LVD) circuit. The LVD holds the
MCU in reset until applied voltage reaches an appropriate level. The LVD also protect against
under-voltage conditions. Consult the MC9S08LG32 reference manual for details LVD
operation.
TIMING
The DEMO9S08LG32 internal timing source is active from RESET by default. An external 32
kHz XTAL oscillator, configured for low-power operation, is also provided. Refer to the
MC9S08LG32 Reference Manual for details on configuring the selected timing source.
COMMUNICATIONS
The DEMO9S08LG32 supports serial communications through the integrated USB-BDM and
an on-board, low-voltage, RS-232 transceiver. The COM_SEL header selects the serial path
applied. The 9-pin, D-Sub, connector at COM1 is not installed in default configurations.
USB SERIAL LINK
The integrated USB-BDM provides a serial link from the target MCU to the host PC through the
host application. Refer to the P&E Multilink documentation for further details.