MC9S12P128 Datasheet, PDF (26/564 Pages) Freescale Semiconductor, Inc – S12 Microcontrollers

Device Overview MC9S12P-Family
NOTE
Reserved register space shown in Table 1-2 is not allocated to any module.
This register space is reserved for future use. Writing to these locations have
no effect. Read access to these locations returns zero.
Figure 1-2 shows S12P CPU and BDM local address translation to the global memory map. It indicates
also the location of the internal resources in the memory map. Table 1-3. shows the mapping of D-Flash
and unpaged P-Flash memory. The whole 256K global memory space is visible through the P-Flash
window located in the 64k local memory map located at 0x8000 - 0xBFFF using the PPAGE register.
Table 1-3. MC9S12P -Family mapping for D-Flash and unpaged P-Flash
Local 64K memory map
Global 256K memory map
D-Flash
0x0400 - 0x13FF
0x1400 - 0x27FF⁽¹⁾
0x0_4400 - 0x0_53FF
0x3_1400 -0x3_27FF⁽²⁾
P-Flash
0x4000 - 0x7FFF
0x3_4000 - 0x3_7FFF
0xC000 - 0xFFFF
0x3_C000 - 0x3_FFFF
1. 0x2FFF for MC9S12P64 because of 4K RAM size
2. 0x3_2FFF for MC9S12P64 because of 4K RAM size
Feature
P-Flash size
PF_LOW
PPAGES
RAMSIZE
RAM_LOW
MC9S12P32
32KB
0x3_8000
0x0E - 0x0F
2KB
0x0_3800
Table 1-4. Derivatives
MC9S12P64
MC9S12P96
MC9S12P128
64KB
0x3_0000
0x0C - 0x0F
4KB
0x0_3000
96KB
128KB
0x2_8000
0x0A - 0x0F
0x2_0000
0x08 - 0x0F
6KB
0x0_2800
S12P-Family Reference Manual, Rev. 1.12
26
Freescale Semiconductor