CME-8GB60 AXIOM, CME-8GB60 Datasheet - Page 17

• Manufacturer Part Number: CME-8GB60
• Description: Microprocessor Development Tool
• Manufacturer: AXIOM

Specifications of CME-8GB60

• Silicon Manufacturer: Freescale
• Core Architecture: HC08
• Features: SPI And IIC Serial Ports, Regulated +3.3V Power Supply, Analog Or PTB I/O Port
• Silicon Core Number: MC9S08GB60
• Silicon Family Name: 68HC08
• Rohs Compliant: No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

M 6 8 E V B 9 0 8 G B 6 0
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.
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.
1
2
3
4
5
6
7
8
PTA0/KBD0
PTA1/KBD1
PTA2/KBD2
PTA3/KBD3
PTA4/KBD4
PTA5/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.
17
0 2 / 1 7 / 0 6