CME12BC32 AXIOM, CME12BC32 Datasheet - Page 10

• Manufacturer Part Number: CME12BC32
• Description: Microprocessor Development Tool
• Manufacturer: AXIOM

Specifications of CME12BC32

• Silicon Manufacturer: Freescale
• Core Architecture: HC12
• Kit Contents: Development Board With 64K SRAM And 32K Flash
• Silicon Family Name: HC12
• Silicon Core Number: 68HC12BC32, 68HC12B32
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

The CME-12B/BC board is shipped from the manufacturer with the following default CONFIG
SWITCH settings:
The 8 position CONFIG SWITCH provides an easy method of configuring the CME-12B/BC32
board operation.
usage:
MEM-SEL JUMPERS
Memory sockets U4/5 are shipped with 32K byte RAM devices. U6/7 are shipped with 32K
byte EPROM devices programmed with the D-bug12 monitor.
1,3,4
1,3
2,4
(1)
on for proper operation.
(2)
SWITCH position 3 is also on. When in off position memory space is SRAM for BDM
use.
ON
SWITCH
CONFIG
1
Enables monitor EPROM’s in memory map at 0x8000 – FFFF hex if CONFIG
Enables memory bus operation for access to board memory. Expanded bus must be
1
2
3
4
5
6
7
8
MODE CHART
Single Chip Mode
Expanded Wide Mode
IN: enables RAM or EEPROM, 32K devices to U6/7
IN: enables RAM or EEPROM, 8K devices in U6/7
IN: enables EPROM, 8K or 32K devices in U6/7 (Default)
ON
2
MODE A selection (see Mode chart
below)
MODE B selection (see Mode chart
below)
EXT –External Memory enable
MON –Monitor Memory enable
VPP - Flash VPP voltage enable
RXD - Serial Port RXD input enable
PC0 –CAN Port RXCAN enable
PC1 –CAN Port TX enable
Following are the configuration switch descriptions and HC12 I/O port
ON
3
OPERATION when in ON position
ON
4
OFF
5
A and B = OFF
A and B = ON
ON
6
10
OFF
7
(1)
(2)
OFF
8
HC12 I/O PORT USED
MODA / PE5
MODB / PE6
PS0 / RXD
PC0
PC2
N/A
N/A
N/A