MC9S12A256B ETC, MC9S12A256B Datasheet - Page 51

• Manufacturer Part Number: MC9S12A256B
• Description: device made up of standard HCS12 blocks and the HCS12 processor core
• Manufacturer: ETC

1.7 Part ID Assignments
The part ID is located in two 8-bit registers PARTIDH and PARTIDL (addresses $001A and $001B after
reset). The read-only value is a unique part ID for each revision of the chip. Table 1-3 shows the assigned
part ID number.
The device memory sizes are located in two 8-bit registers MEMSIZ0 and MEMSIZ1 (addresses $001C
and $001D after reset). Table 1-4 shows the read-only values of these registers. Refer to section Module
Mapping and Control (MMC) of HCS12 Core User Guide for further details.
NOTES:
1. The coding is as follows:
Bit 15-12: Major family identifier
Bit 11-8: Minor family identifier
Bit 7-4: Major mask set revision number including FAB transfers
Bit 3-0: Minor - non full - mask set revision
MC9S12DP256
MC9S12DP256
MC9S12DP256
Device
Freescale Semiconductor, Inc.
Table 1-3 Assigned Part ID Numbers
For More Information On This Product,
Table 1-4 Memory size registers
Register name
MEMSIZ0
MEMSIZ1
Go to: www.freescale.com
Mask Set Number
0K79X
1K79X
2K79X
MC9S12DP256B Device User Guide — V02.14
Value
$25
$81
Part ID
$0010
$0011
$0012
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