M68EVB908GB60
Development Board for Motorola M9S08GB60
! Axiom Manufacturing • 2813 Industrial Lane • Garland, TX 75041
Email: Sales@axman.com Web: http://www.axman.com !
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CONTENTS
CAUTIONARY NOTES ...........................................................................................................................................................3
TERMINOLOGY ......................................................................................................................................................................3
FEATURES................................................................................................................................................................................4
GETTING STARTED...............................................................................................................................................................5
REFERENCE DOCUMENTATION .................................................................................................................................................5
M68EVB908GB60 STARTUP...................................................................................................................................................5
MONITOR OPERATION ........................................................................................................................................................6
MONITOR MEMORY MAP: .................................................................................................................................................7
M68EVB908GB60 OPERATION ............................................................................................................................................7
POWER SUPPLY ...................................................................................................................................................................7
ON_OFF Switch ..................................................................................................................................................................8
J1 Power Jack......................................................................................................................................................................8
TB1 Power Connector .........................................................................................................................................................8
RESET_SW .............................................................................................................................................................................9
IRQ_SW ..................................................................................................................................................................................9
OSC_SEL ................................................................................................................................................................................9
X1 CLOCK OSCILLATOR ....................................................................................................................................................9
COM PORTS AND COM SWITCH ..............................................................................................................................................9
COM1 ................................................................................................................................................................................10
COM2 ................................................................................................................................................................................10
422_485 Port .....................................................................................................................................................................11
485_EN ..............................................................................................................................................................................11
USER_ENABLE SWITCH ......................................................................................................................................................11
LCD DISPLAY AND PORT...................................................................................................................................................12
Display Read / Write Transactions....................................................................................................................................12
RV1 USER POTENTIOMETER ..................................................................................................................................................14
DIP SWITCH ...........................................................................................................................................................................14
SW1 – SW4 PUSH SWITCHES.................................................................................................................................................15
BUZZER................................................................................................................................................................................15
BREADBOARD....................................................................................................................................................................15
9S08GB60 PORT CONNECTORS ........................................................................................................................................16
MCU_PORT..........................................................................................................................................................................16
ANALOG PORT (PTB) ........................................................................................................................................................16
VRH_EN AND VRL_EN .......................................................................................................................................................17
KEYPAD (PTA)....................................................................................................................................................................17
GP PORT AND JP1 ................................................................................................................................................................17
P1 - P4 HCS08 HEADER RING ...............................................................................................................................................17
BDM PORT...........................................................................................................................................................................18
TROUBLESHOOTING ............................................................................................................................................................19
TABLE 1: LCD COMMAND AND CHARACTER CODES..............................................................................................20
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Cautionary Notes
1) Electrostatic Discharge (ESD) prevention measures should be applied whenever handling
this product. ESD damage is not a warranty repair item.
2) Axiom Manufacturing reserves the right to make changes without further notice to any
products to improve reliability, function or design. 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 M68EVB908GB60 board:
a) This product as shipped from the factory with associated power supplies and cables, has
been tested and meets 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 also cause interference with
other apparatus in the immediate vicinity. If such interference is detected, suitable
mitigating measures should be taken.
Terminology
This development board applies option selection jumpers. Terminology for application of the
option jumpers is as follows:
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
idled by installing on 1 pin so they will not be lost.
This development board applies hard wired option selections (VRH_EN and VRL_EN). These
option selections apply a circuit trace between the option pads to complete a default
connection. This type connection places an equivalent Jumper Installed type option. The circuit
trace between the option pads maybe cut with a razor blade or similar type knife to isolate the
default connection provided. Applying the default connection again can be performed by
installing the option post pins and shunt jumper, or by applying a wire between the option
pads.
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FEATURES
The M68EVB08GB60 is an evaluation or development board for the M9S08GB60
microcontroller. Development of applications is quick and easy with the included DB9 serial
cable, sample software tools, examples, and debug monitor. The prototyping area provides
space to apply the CPU I/O to your needs. The BDM port is provided for development tool
application and is compatible with HCS08 BDM interface cables and software.
Features:
♦ M9S08GB60 CPU
* 60K Byte Flash
* 4K Bytes Ram
* 56 I/O lines (64 pins)
* 5 channel TPM 2 Timer
* 3 channel TPM 1 Timer
* 8 Channel 10 BIT A/D
* SPI and IIC Serial Ports
* 2 x SCI Serial Ports
* Key Wake-up Ports
* BDM Port
* Clock generator w/ PLL
* up to 40Mhz operation
♦ 32Khz or 4MHz reference Crystal oscillator
♦ Clock oscillator optional
♦ Regulated +3.3V and 5V power supplies
♦ COM1 Serial Port w/ RS232 DB9-S Connector
* SCI0 Serial Port
♦ COM2 CAN Serial Port w/ RS232 DB9-S Connector
or RS422/485 connector.
* SCI1 Serial Port
♦ ON/OFF switch w/ Power Indicator
♦ User Components Provided
* 4 LED Indicators (PTF0-3)
* 4 position DIP switch (PTB4-7)
* 4 Push Switches (PTA4-7)
* 2x16 character LCD Module (PTG3-7, PTE6-7)
* Buzzer (PTD0)
♦ MCU Port connector provides all digital I/O
♦ Analog Port connector provides analog inputs or PTB outputs
♦ Large 2” x 5” Prototype Area
♦ Supplied with DB9 Serial Cable, Utility Support disk (CD),
Manuals, and Wall plug type power supply.
Specifications:
Board Size 6” x 6.2”
Power Input: +6 - +20VDC, 9VDC typical
Current Consumption: 50ma @ 9VDC input
The M68EVB908GB60 is provided operating the Motorola binary monitor. The monitor allows
serial interface to host based development environments for source level debugging
operations.
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GETTING STARTED
The M68EVB908GB60 single board computer is a fully assembled, fully functional
development board for the Motorola M9S08GB60 microcontroller. Provided with wall plug
power supply and serial cable. Support software for this development board is provided for
Windows 95/98/NT/2000/XP operating systems.
Development board users should also be familiar with the hardware and software operation of
the target HCS08 device, refer to the provided Motorola User Guide for the device and the
HCS08 Reference Manual for details. The development board purpose is to assist the user in
quickly developing an application with a known working environment or to provide an
evaluation platform for the target HCS08. Users should be familiar with memory mapping,
memory types, and embedded software design for the quickest successful application
development.
Application development maybe performed by applying the embedded serial interface monitor,
or by applying a compatible HCS08 BDM cable with supporting host software. The monitor
provides an effective and low cost debug method.
The serial monitor is provided in the development board HCS08 device internal flash memory
and applies some HCS08 resources for operation. See the AN2140 application note from
Motorola for complete details. After the user application is tested under monitor control, the
code can be configured for dedicated operation and programmed into the device.
Reference Documentation
Reference documents are provided on the support CD in Acrobat Reader format.
AN2140 – HCS08 Serial Monitor application note.
9S08GB_GT60UM.pdf – 9S08GB60 user manual
CPU08RM.pdf – CPU08 core user manual with instruction set
M68EVB908GB60_SCH_C.pdf – M68EVB908GB60 board schematics
M68EVB908GB60 Startup
Follow these steps to connect and power on the board for the default Monitor operation.
1) A version of integrated development software that applies the monitor for development
purposes should be applied first. Follow the installation and set-up instructions provided
with this software. To verify the monitor is installed and operating, proceed to the following
steps.
2) Install AxIDE terminal software and launch or configure HyperTerminal for a direct
connection to the PC COM port to be applied for serial communication with the
M68EVB908GB60 board. Set the baud rate to 115.2K baud, 8 data bits, 1 stop bit, and no
parity. Software and hardware flow controls should be disabled.
3) Connect the M68EVB908GB60 board COM1 serial connector to the host PC COM port
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with the provided serial cable.
4) Apply power to the EVB board by installing the wall plug power supply between a wall
outlet and the J1 Power Jack on the board.
5) Left Click the mouse in the terminal window on the PC display or make the terminal window
active for keyboard entry. Type the “Enter” key and observe the display for the monitor
prompt.
6) Close AxIDE or HyperTerminal software and apply the development software now.
MONITOR OPERATION
See the AN2140 application note on the monitor for complete details of operation. Basic
operation is provided in this manual. The monitor occupies 1K bytes of flash memory and up
to 64 bytes of stack space. It provides a binary command set via the SCI1 or COM1 port.
COMMUNICATION:
The monitor provides default 115.2K baud serial communication on the COM1 (SCI1) interface
port. Optional lower baud rate operation can be detected by the monitor for an automatic
change of baud rate during sign-on. User can type the Enter key repeatedly to allow the
monitor to sign on at a lower baud rate.
POWER ON or RESET PROMPT:
The monitor will provide a text prompt to the serial COM1 interface to provide an indication
that it is operating after the baud rate is detected. User or controlling software must send
“Enter” key for prompt to appear.
COMMANDS:
No user commands can be applied with a keyboard with software such as HyperTerminal or
AxIDE. The monitor commands are binary and not compatible with keyboard (ASCII) entry or
display. Host based software should interface with the monitor on the serial communication
port to provide development support.
INTERRUPT SERVICE SUPPORT:
The monitor applies the 9S08GB60 lower interrupt vector table from 0xFBCC to 0xFBFF for
user interrupts. User will not have access to the SCI1, SWI, and RESET vectors while the
monitor is operating. Programming the user Reset vector will cause the monitor to execute the
user program on Reset. See the AN2140 application note for user interrupt application.
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MONITOR MEMORY MAP:
0x0000
9S08GB60 Direct Page Register Space.
0x007F
See the 9S08GB60 User Manual for details
0x0080
9S08GB60 ram memory space
0x107F
Monitor Stack Pointer = 0x107F
0x1080
9S08GB60 Lower flash block
0x17FF
0x1800
9S08GB60 High Page Register block
0x182B
0x182C
User Application Flash Memory
0xFBCB
0xFBCC
User Interrupt Vectors
0xFBFF
See AN2140 for details on application
0xFC00
Monitor Flash Memory Space
0xFFFF
M68EVB908GB60 OPERATION
The M68EVB908GB60 board provides many input and output features to assist in application
development. These features may be isolated from the applied HCS08 I/O ports by the option
switches or jumpers. This allows alternate use of the HCS08 I/O ports for other application
and connection on the MCU_PORT connector. Caution should be observed so that the
HCS08 I/O port pin applied to an on board feature is not also applied to external components
by the user.
POWER SUPPLY
Input power is applied by external connection to the J1 power jack or TB1 power terminal
block. The input supply is enabled to the voltage regulators by the ON_OFF switch. The
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regulators are protected from reverse voltage by diode D3 and current limited by fuse FZ1.
Input voltage is regulated to +5V supply by VR1 and the +5V supply is regulated to the +3.3V
supply by VR2. With +6 to +20VDC applied and the ON_OFF switch in the ON position, the
+5V and +3.3V Indicators should be ON.
Fuse FZ1 will open during an over current condition. To reset FZ1, power should be removed
from the board and a cooling period of 20 minutes provided before reapplying power. During
the cooling period the cause of the over current condition should be corrected.
ON_OFF Switch
The ON_OFF slide switch provides board power on and off control. With the switch in the ON
position, the +5V and +3.3V power indicators should light. If no power indications occur,
review power and I/O connections and refer to the Troubleshooting guide in this manual.
J1 Power Jack
J1 provides the default power input to the board. The J1 power jack accepts a standard 2.0 ~
2.1mm center barrel plug connector (positive voltage center) to provide the +VIN supply of +6
to +20 VDC (+9VDC typical).
+Volts, 2mm center
TB1 Power Connector
TB1 provides access to the +VIN, GND (power ground), +5V and +3.3V power supplies. The
+VIN connection is not switched by the ON-OFF switch or fused. The +5V and +3.3V positions
can source 50ma each to external circuits. Applying +5V or +3.3V externally to power the
board from TB1 should not be performed. If the user needs more power, an additional voltage
regulator or source should be applied with a common ground connected at the TB1 GND
connection.
TB1
1
+VIN
2
GND
3
+5V
4
+3.3V
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RESET_SW
The RESET switch provides for manual application of the HCS08 RESET* signal.
IRQ_SW
The IRQ switch provides for manual application of the HCS08 IRQ signal. The switch applies
and active low level or falling edge signal. Note that the HCS08 internal pull-up device must be
enabled on this signal to operate correctly.
OSC_SEL
The OSC_SEL option jumper provides selection between the Y1 crystal oscillator circuit and
an external X1 clock source or GP Port. The Y1 crystal oscillator is selected by default.
X1 CLOCK OSCILLATOR
The X1 socket is provided to install a standard 5V compatible CAN type clock oscillators. The
clock oscillator application will generate particular frequencies of operation of the HCS08
device. The user should refer to the HCS08 device user manual for information on frequency
selection. The OSC_SEL option jumper will select between the crystal oscillator or the X1
clock source for the HCS08 device. User should also note that the GP Port may provide a
signal to drive the X1 clock signal. In this case, the X1 clock oscillator should not be installed.
COM Ports and COM Switch
The COM_SW provides HCS08 I/O port to communication peripheral connections on the
evaluation board. This allows the user to apply the provided communication transceivers and
ports, or to apply the associated I/O to other purposes. The switch positions should be
reviewed first if any operational problems are encountered with the COM1, COM2, or 422_485
ports. Position 8 serves as the BUZZER enable option.
COM_SW
1
2
3
4
5
6
7
8
HCS08 Port
PTE1/RXD1
PTF6
PTD6/TPM2CH3
PTC1/RXD2
PTF7
PTD7/TPM2CH4
PTC1/RXD2
PTD0/TPM1CH0
COM Signal
COM1 RXD IN
COM2 CD OUT
COM2 DTR IN
COM2 RXD IN
COM2 RTS OUT
COM2 CTS IN
422_485 RXD IN
BUZZER OUT
MCU_PORT
38
41
21
18
42
22
18
27
Notes:
1) COM_SW position 4 and 7 should not be ON at the same time.
2) HCS08 device port pins PTE0/TXD1 and PTC0/TXD2 are applied to the COM1 and COM2
/ 422_485 serial ports respectfully as outputs for the serial communication operation.
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COM1
The COM1 port provides standard 9 pin connection with RS232 type interface to the HCS08
SCI1 peripheral. Refer to the COM SW for enabling the HCS08 RXD1 signal applied to this
port. The COM1 port is applied by default with the Monitor. The HCS08 TXD1 and RXD1
signals are converted to RS232 levels by U7 and provided to the COM1 connector. Following
is the DB9S connection reference.
COM1
1
TXD1
RXD1
4
GND
1
2
3
4
5
6
7
8
9
X
6
7
8
9
The COM-1 port has a Female DB9 connector that interfaces to
the HCS08 internal SCI1 serial port via the U7 RS232
transceiver. It applies simple 2 wire asynchronous serial without
flow controls.
1,4,6 connected and 7,8 connected
COM SW position 1 will isolate the SCI1 RXD1 pin (PTE1) from the transceiver.
The 1,4,6,7,8, and 9 pins provide RS232 flow control and status. These are connected on the
on the bottom of the development board to provide a NULL status returned to the host. the
DB9 connector locations are provided access pads behind the connector. User may isolate
the connection pads by cutting the associated circuit trace on the bottom of the board. The
user may then apply flow control or status connections to the host by applying HCS08 I/O
signals and additional RS232 level conversion. COM2 provides these signals.
COM2
The COM2 port provides standard 9 pin connection with RS232 type interface to the HCS08
SCI2 peripheral. Note that COM2 is shared with the 422_485 serial port also. Following is the
DB9S connection reference.
COM2
(CD) 1
TXD2
RXD2
(DTR) 4
GND
1
2
3
4
5
6
7
8
9
X
6 (idle)
7 (CTS)
8 (RTS)
9
The COM-2 port has a Female DB9 connector that
interfaces to the HCS08 internal SCI2 serial port via the
U8 RS232 transceiver. It applies simple 2 wire
asynchronous serial with optional hardware flow controls.
COM Switch operation with COM2 notes:
1) COM SW position 4 will connect or isolate the SCI2 RXD pin (PTC1) from the transceiver.
2) COM_SW position 2 will connect or isolate HCS08 PTF6 as the RS232 CD output signal
control.
3) COM_SW position 3 will connect or isolate HCS08 PTD6/TPM2CH3 as the RS232 DTR
input control signal.
4) COM_SW position 5 will connect or isolate HCS08 PTF7 as the RS232 RTS output signal
control.
5) COM_SW position 6 will connect or isolate HCS08 PTD7/TPM2CH4 as the RS232 CTS
input control signal.
The COM2 connector connections provide the same access test pads for pins 1, 4, 6, 7, 8, and
9 as the COM1 port.
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422_485 Port
The 422_485 port provides the HCS08 SCI2 operation of a high-speed 2 or 4 wire RS485 or
RS422 compatible network. This type of interface provides higher baud rates over longer
distances due to the application of differential drivers and receivers. The network type also
allows multiple receivers on the same wire pair so that a master / slave communication type
can be achieved. The 422_485 port cannot be operated at the same time as COM2 due to the
sharing of the HCS08 SCI2 channel.
422_485 Connector
1
4W TX+
2
4W TX-
3
4W RX-
2W TX- / RX-
4
4W RX+
2W TX+ / RX+
5
GND
GND
Notes:
1) 4W TX is enabled at all times with 485_EN
option open or in the 2WEN setting.
2) 4W TX output is controlled by HCS08 PTF7
with 485_EN in the 4WEN position.
3) 2W TX output must be enabled by the
485_EN 2WEN option installed.
4) 2W or 4W TX output is enabled by HCS08
PTF7 with a logic high. 485_EN option
installed.
COM Switch position 7 will connect or isolate HCS08 RXD2 as the 422_485 receive signal.
485_EN
This option jumper installed will connect the HCS08 I/O port PTF7 as transmit enable control
signal for the 422_485 serial port. The option allows for operation in the 2W 485 mode
(2WEN) or 4W 422 mode (4WEN). The active level of the enable signal is logic high.
Operation of the enable signal is to provide a transmitter on and off control so that multiple
nodes can be placed on the 485_422 network.
USER_ENABLE Switch
The USER ENABLE switch provides a method to enable or connect user components applied
to the HCS08 I/O ports. The development board user should be familiar with the input and
output application so that port conflicts do not occur. Following is the connection reference
table:
USER
ENABLE
1
2
3
4
5
6
7
8
USER COMPONENT
HCS08 PORT
4 Position DIP Switch
SW1 to SW4
RV1 Potentiometer
LCD PORT
PTB4/AD4 – PTB7/AD7
PTA4 /KBD4 – PTA7/KBD7
PTB0/AD0
PTG3 – PTG7 and PTE6 – PTE7
LED 1
LED 2
LED 3
LED 4
PTF0
PTF1
PTF2
PTF3
Note: LED indicators are active logic low.
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PORT
DIRECTION
Input
Input
Input
See LCD Port
operation
Output
Output
Output
Output
ALTERNATE PORT
ANALOG 5 - 8
MCU 1 – 4
ANALOG 1
MCU 31-32, 51-54, 56
MCU 47
MCU 48
MCU 45
MCU 46
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LCD DISPLAY and PORT
A 32 character (2 x 16) LCD display is provided on the development board for applications that
require this type of display output. Display I/O operation is enabled by the USER ENABLE
switch position 4 in the ON position. An optional LCD PORT is located under the display so
that the provided display can be replaced by a smaller or larger version by the user.
CONTRAST adjustment is provided to allow the use of extended temperature displays also.
Operation of the LCD display or port is in nibble or 4 bits wide data mode. The HCS08 I/O
ports PTG3 – PTG7 and PTE6 –PTE7 provide the data and control signals. Display
commands or data should be formatted to provide low nibble (LSB bits of byte value) on first
transaction then high nibble (MSB bits of byte value) on the second transaction. Example
software driver is provided on the support CD to assist the user in applying this device.
The following table reflects the I/O port pin application to the LCD Port:
HCS08 PORT PIN
PTG4
PTG5
PTG6
PTG7
PTG3
PTE6
PTE7
LCD PORT SIGNAL
DB4
DB5
DB6
DB7
Read/Write* (R/W)
Register Select (RS)
Enable (EN)
NOTES
Bi-directional data bit (LSB)
Bi-directional data bit
Bi-directional data bit
Bi-directional data bit (MSB)
Output only, 0 = Write, 1 = Read *See Note 1
Output only, 0 = Command, 1 = Data
Output only, 0 = idle, 1 = active
Note 1: Normally the display is always written to: PTG4-7 Data = outputs and PTG3 R/W = 0.
Caution must be observed if the display is to be Read so that the PTG4-7 data lines are set for
INPUT mode prior to the PTG3 R/W signal being set to 1. Port contention will occur if the
sequence is violated.
Display Read / Write Transactions
The user should apply these sequences to read and write the LCD display.
INITIALIZE DISPLAY (From Reset or Power On condition)
1) Pause 100ms to allow display to power on.
2) Configure Ports:
PORT
PTG3
PTG4-7
PTE6-7
DIRECTION
OUTPUT
OUTPUT
OUTPUT
DATA
0
0
0
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3) Enable Display:
Write command – 0x3
Delay – 5ms
Write command – 0x3
Delay – 2ms
Write command – 0x3
Delay – 2ms
Write command – 0x2
Delay – 2ms
Command Write – 0x28
Command Write – 0x06
Command Write – 0x0E
Command Write – 0x01
; Initialize 4 bit data mode
; Initialize 4 bit data mode
; Initialize 4 bit data mode
; Initialize 4 bit data mode
; Set display lines and font
; Set entry mode, shift right
; Set display on, cursor on, blink on
; Clear display and home cursor
COMMAND WRITE Sequence
Note: Most commands require a post processing delay, 2ms is applied typically.
PORT
PTG3 (R/W)
PTE6-7 (RS-EN)
PTG4-7 (DB4-7)
DIRECTION
OUTPUT
OUTPUT
OUTPUT
PTE7 (EN)
OUTPUT
PTE7 (EN)
PTG4-7 (DB4-7)
OUTPUT
OUTPUT
PTE7 (EN)
OUTPUT
PTE7 (EN)
Delay 2ms.
OUTPUT
DATA or NOTES
0
0
Command Byte Data bits D4 – D7
Delay for Set-up time of 500ns.
1
Delay for access time of 500ns.
0
Command Byte Data bits D0 – D3
Delay for Set-up time of 500ns.
1
Delay for access time of 500ns.
0
Delay before next data or command access.
COMMAND READ sequence
Note: Command Read provides display busy status or current cursor location.
PORT
PTE6-7 (RS-EN)
PTG4-7 (DB4-7)
PTG3 (R/W)
DIRECTION
OUTPUT
INPUT
OUTPUT
PTE7 (EN)
OUTPUT
PTG4-7 (DB4-7)
PTE7 (EN)
INPUT
OUTPUT
PTE7 (EN)
OUTPUT
PTG4-7 (DB4-7)
PTE7 (EN)
INPUT
OUTPUT
DATA or NOTE
0
NA
1
Delay for Set-up time of 500ns.
1
Delay for access time of 500ns.
Status Byte Data bits D4 – D7
0
Delay for Set-up time of 500ns.
1
Delay for access time of 500ns.
Status Byte Data bits D0 – D3
0
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DISPLAY DATA WRITE Sequence
Note: Data writes require a post processing delay, 100us applied typically.
PORT
PTG3 (R/W)
PTE7 (EN)
PTE6 (RS)
PTG4-7 (DB4-7)
DIRECTION
OUTPUT
OUTPUT
OUTPUT
OUTPUT
PTE7 (EN)
OUTPUT
PTE7 (EN)
PTG4-7 (DB4-7)
OUTPUT
OUTPUT
PTE7 (EN)
OUTPUT
PTE7 (EN)
Delay 100us.
OUTPUT
DATA or NOTE
0
0
1
Byte Data bits D4 – D7
Delay for Set-up time of 500ns.
1
Delay for access time of 500ns.
0
Command Byte Data bits D0 – D3
Delay for Set-up time of 500ns.
1
Delay for access time of 500ns.
0
Delay before next data or command access.
Display Data READ sequence
PORT
PTE7 (EN)
PTE6 (RS)
PTG4-7 (DB4-7)
PTG3 (R/W)
DIRECTION
OUTPUT
OUTPUT
INPUT
OUTPUT
PTE7 (EN)
OUTPUT
PTG4-7 (DB4-7)
PTE7 (EN)
INPUT
OUTPUT
PTE7 (EN)
OUTPUT
PTG4-7 (DB4-7)
PTE7 (EN)
INPUT
OUTPUT
DATA or NOTE
0
1
NA
1
Delay for Set-up time of 500ns.
1
Delay for access time of 500ns.
Byte Data bits D4 – D7
0
Delay for Set-up time of 500ns.
1
Delay for access time of 500ns.
Status Byte Data bits D0 – D3
0
RV1 User Potentiometer
The User Potentiometer provides an adjustable linear voltage from 0 to 3.3V. The voltage
signal is made available to HCS08 port PTB0 or analog input AD0 by the USER ENABLE
switch position 3. The HCS08 ADC module can measure the input voltage to allow user
application response to the input voltage level.
DIP Switch
The DIP switch is provides 4 positions for user application. The on position applies a logic low
level to the respective PTB4 - PTB7 input port. The switch is enabled to connect to the input
port by USER ENABLE position 1. Example application of the DIP switch would be to apply a
485 or 422 node address for a network.
14
M 6 8 E V B 9 0 8 G B 6 0
0 4 / 2 9 / 0 3
SW1 – SW4 Push Switches
The push switches provide momentary active low input for user applications. The switches
provide input to HCS08 ports PTA4 – PTA7 when USER ENABLE position 2 is ON. Input
ports PTA4 – PTA7 provide KBD4 – 7 input interrupt capability also. Typical application would
be to provide program control or menu selection input.
SW4 on HCS08 PTA7 also provides the Monitor Reset operation. Enabling the Push Switches
and holding SW4 down during RESET will return a user Reset application to monitor control.
BUZZER
The BUZZER provides audio indications under user application control. When enabled by
USER ENABLE position 3, the HCS08 PTD0/TPM2CH4 output will control audio indications
generated by the BUZZER. Active logic high signal on the PTD0 signal will enable audio
output from the BUZZER. The user application can modulate the Buzzer with high and low
signals to generate custom sound effects.
BREADBOARD
The Breadboard area provides a convenient and fast interconnection for prototyping circuits on
the M68EVB908GB60 board. User may apply 22-24GA solid core wire (stripped) to make
connections between the I/O port connectors and the breadboard. Soldering not required.
15
M 6 8 E V B 9 0 8 G B 6 0
0 4 / 2 9 / 0 3
9S08GB60 PORT CONNECTORS
MCU_PORT
The MCU PORT provides access to the 9S08GB60 I/O ports.
PTA6/KBD6
PTA4/KBD4
PTA2/KBD2
PTA0/KBD0
3.3V
PTC6
PTC4/CLKOUT
PTC2/SDA
PTC0/TXD2
3.3V
PTD6/TPM2CH3
PTD4/TPM2CH1
PTD2/TPM1CH2
PTD0/TPM1CH0
3.3V
PTE6
PTE4/MOSI
PTE2/SS*
PTE0/TXD1
3.3V
PTF6
PTF4
PTF2
PTF0
3.3V
PTG6
PTG4
PTG2/EXTAL
PTG0/BGND/MS
RESET*
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49
51
53
55
57
59
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
PTA7/KBD7
PTA5/KBD5
PTA3/KBD3
PTA1/KBD1
GND
PTC7
PTC4
PTC3/SCL
PTC1/RXD2
GND
PTD7/TPM2CH4
PTD5/TPM2CH2
PTD3/TPM2CH0
PTD1/TPM1CH1
GND
PTE7
PTE5/SPSCK
PTE3/MISO
PTE1/RXD1
GND
PTF7
PTF5
PTF3
PTF1
GND
PTG7
PTG5
PTG3
PTG1/XTAL
IRQ
Notes:
1) PTA0-7 also assigned
to KEYPAD port.
2) PTA4-7 also provide
Push Switch Sw1-4
input if enabled.
3) PTE0 –1 provide SCI1
I/O to COM1 if
enabled.
4) PTC0-1 provide SCI2
I/O to COM2 or the
422_485 port if
enabled.
5) PTD0 provides
BUZZER output if
enabled.
6) PTG1-2 are the Y1
XTAL and EXTAL
signals by default. R46
and R47 isolate the
MCU PORT pins to
prevent crystal
operation interference.
7) PTG0 is the BGND
signal if a BDM is
connected.
8) PTG3-G7 and PTE6-7
provide LCD display
interface if enabled.
ANALOG PORT (PTB)
The ANALOG port provides access to the Port B I/O or Analog signals.
PTB0/AD0
PTB2/AD2
PTB4/AD4
PTB6/AD6
VREFH
1
3
5
7
9
2
4
6
8
10
PTB1/AD1
PTB3/AD3
PTB5/AD5
PTB7/AD7
VREFL
Notes:
1) PTB4-7 provide DIP Switch input if enabled.
2) PTB0 provides RV1 user pot input if enabled.
16
M 6 8 E V B 9 0 8 G B 6 0
0 4 / 2 9 / 0 3
VRH_EN and VRL_EN
VRH and VRL analog signals are connected to VDDA and Ground potentials respectfully by
the VRH_EN and VRL_EN option positions. The VRH and VRL signals may be isolated from
the default potentials by a cut with a razor blade or knife between the option pads on the
development board. Alternate VRH or VRL signals may then be applied at the ANALOG Port.
To restore the default connection, a 1x2 pin post header can be installed to allow option
jumper use or a wire jumper can be installed between the option pads.
KEYPAD (PTA)
The KEYPAD PTA connector provides interface for the HCS08 port A / KBD signals or
applying a keypad. When applied as a KEYPAD connector, the interface is for a passive 4 x 4
matrix (16 key) keypad device.
1
2
3
4
5
6
7
8
PTA0/KBD0
PTA1/KBD1
PTA2/KBD2
PTA3/KBD3
PTA4/KBD4
PTA4/KBD5
PTA6/KBD6
PTA7/KBD7
This interface is implemented as a software key scan. Pins PTA0-3
are used as column drivers which are active high outputs. Pins
PTA4-7 are used for row input and will read high when their row is
high.
See the file Key08.ASM for an example program using this
connector.
GP PORT and JP1
The GP Port is provided for backward compatibility with the CMS08GP32 development board
MCU PORT. The JP1 option jumper selects the GP Port voltage source of 3.3V or 5V. Refer
to the schematic diagram for connections to this port.
P1 - P4 HCS08 Header Ring
P1 - P4 provide a header ring for all I/O of the HCS08 device. User should refer to the
M68EVB908GB60 board schematic diagram for connector pin connections. All HCS08 I/O is
available from the other I/O Ports on the board.
17
M 6 8 E V B 9 0 8 G B 6 0
0 4 / 2 9 / 0 3
BDM PORT
The BDM port is a 6 pin header compatible with a Motorola Background Debug Mode (BDM)
Pod. This allows the connection of a background debugger for software development,
programming and debugging in real-time without using HCS08 I/O resources.
BGND/PTG0 1 2 GND
3 4 /RESET
5 6 +3.3V
See the HCS08 Technical Reference Manual for
complete documentation of the BDM.
18
M 6 8 E V B 9 0 8 G B 6 0
0 4 / 2 9 / 0 3
TROUBLESHOOTING
The M68EVB908GB60 is fully tested and operational before shipping. If it fails to function
properly, inspect the board for obvious physical damage first. Verify the communications setup
as described under GETTING STARTED.
The most common problems are improperly configured communications parameters, and
attempting to use the wrong COM port.
1. Verify that your communications port is working by substituting a known good serial device
or by doing a loop back diagnostic.
2. Verify the power source, Indicators are ON?. You should measure a minimum of 9 volts
between the GND and +VIN connections on the TB1 power connector with the standard
power supply provided.
3. If no power indications or voltage is found, verify the wall plug connections to 115VAC
outlet and the power connector.
4. Verify the logic power source. You should measure +5 volts between the GND and +5V
connections on the TB1 power connector. If the +VIN supply is good and this supply is not
+5V, immediately disconnect power from the board. Contact support@axman.com by
email for instructions and provide board name and problem.
5. Disconnect all external connections to the board except for COM1 to the PC and the wall
plug.
6. Make sure that the RESET line is not being held low or the RESET indicator is not lit.
7.
Contact support@axman.com by email for further assistance. Provide board name and
describe problem.
19
M 6 8 E V B 9 0 8 G B 6 0
0 4 / 2 9 / 0 3
TABLE 1: LCD Command and Character Codes
Command codes are used for LCD setup and control of character and cursor position. The
BUSY flag (bit 7) may be tested before any command updates to verify that any previous
command is completed. A read of the command address will return the BUSY flag status and
the current display character location address.
Command
Clear Display, Cursor to Home
Cursor to Home
Entry Mode:
Cursor Decrement, Shift off
Cursor Decrement, Shift on
Cursor Increment, Shift off
Cursor Increment, Shift on
Display Control:
Display, Cursor, and Cursor Blink off
Display on, Cursor and Cursor Blink off
Display and Cursor on, Cursor Blink off
Display, Cursor, and Cursor Blink on
Cursor / Display Shift: (nondestructive move)
Cursor shift left
Cursor shift right
Display shift left
Display shift right
Display Function (default 2x40 size)
Character Generator Ram Address set
Display Ram Address and set cursor location
Code
$01
$02
Delay
1.65ms
1.65ms
$04
$05
$06
$07
40us
40us
40us
40us
$08
$0C
$0E
$0F
40us
40us
40us
40us
$10
$14
$18
$1C
$3C
$40-$7F
$80- $FF
40us
40us
40us
40us
40us
40us
40us
LCD Character Codes
$20
$21
$22
$23
$24
$25
$26
$27
$28
$29
$2A
$2B
$2C
Space
!
“
#
$
%
&
‘
(
)
*
+
,
$2D
$2E
$2F
$30
$31
$32
$33
$34
$35
$36
$37
$38
$39
.
/
0
1
2
3
4
5
6
7
8
9
$3A
$3B
$3C
$3D
$3E
$3F
$40
$41
$42
$43
$44
$45
$46
:
;
{
=
}
?
Time
A
B
C
D
E
F
$47
$48
$49
$4A
$4B
$4C
$4D
$4E
$4F
$50
$51
$52
$53
G
H
I
J
K
L
M
N
O
P
Q
R
S
20
$54
$55
$56
$57
$58
$59
$5A
$5B
$5C
$5D
$5E
$5F
$60
T
U
V
W
X
Y
Z
[
Yen
]
^
_
`
$61
$62
$63
$64
$65
$66
$67
$68
$69
$6A
$6B
$6C
$6D
A
B
C
D
E
F
G
H
I
J
K
L
M
$6E
$6F
$70
$71
$72
$73
$74
$75
$76
$77
$78
$79
$7A
n $7B
o $7C
p $7D
q $7E
r $7F
s
t
u
v
w
x
y
z
{
|
}
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