MC9S12E256 Datasheet, PDF (56/602 Pages) Freescale Semiconductor, Inc – HCS12 Microcontrollers

Chapter 1 MC9S12E256 Device Overview (MC9S12E256DGV1)
1.2.2 Part ID Assignments
The part ID is located in two 8-bit registers PARTIDH and PARTIDL (addresses 0x001A and 0x001B after
reset. The read-only value is a unique part ID for each revision of the chip. Table 1-2 shows the assigned
part ID numbers.
Table 1-2. Assigned Part ID Numbers
Device
Mask Set Number
Part ID¹
MC9S12E256
0L43X
0x5000
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
The device memory sizes are located in two 8-bit registers MEMSIZ0 and MEMSIZ1 (addresses 0x001C
and 0x001D after reset). Table 1-3 shows the read-only values of these registers. Refer to Chapter 19,
“Module Mapping Control (MMCV4)” for further details.
Table 1-3. Memory Size Registers
Device
MC9S12E256
MC9S12E256
Register name
MEMSIZ0
MEMSIZ1
Value
0x07
0x81
MC9S12E256 Data Sheet, Rev. 1.08
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Freescale Semiconductor