MC9S12HZ256 Datasheet, PDF (29/692 Pages) Freescale Semiconductor, Inc – HCS12 Microcontrollers

Chapter 1 MC9S12HZ256 Device Overview
Figure 1-5 shows the device memory map for the MC3S12HZ32 and MC93S12HN32 out of reset.
0x0000
0x0400
0x0800
0x3800
0x4000
0x0000 1K Register Space
0x03FF Mappable to any 2K Boundary
0x3800 ^{2K Bytes RAM}
See table below for mapping options
0x3FFF
0x4000
0.5K, 1K, 2K or 4K Protected Sector
0x8000
0x7FFF ^{16K Fixed ROM}
0x8000 _{16K Page Window}
Two * 16K ROM Pages
0xC000
0xBFFF
0xC000 _{16K Fixed ROM}
0xFFFF ^{2K, 4K, 8K or 16K Protected Boot Sector}
0xFF00
0xFFFF
VECTORS
VECTORS
0xFF00
0xFFFF
BDM
(If Active)
NORMAL
SINGLE CHIP
SPECIAL
SINGLE CHIP
Figure 1-5. MC3S12HZ32 and MC3S12HN32 Memory Map
Table 1-5. MC3S12HZ32 and MC3S12HN32 RAM mapping options
INITRM¹
RAM location
Reserved location
(no ROM access)
0x00
0x0000 - 0x07FF
0x0800 - 0x2FFF
0x39
0x3800 - 0x3FFF
0x1000 - 0x37FF
0x40
0x4000 - 0x47FF
0x4800 - 0x6FFF
0x79
0x7800 - 0x7FFF
0x5000 - 0x77FF
0x80
0x8000 - 0x87FF
0x8800 - 0xAFFF
0xB9
0xB800 - 0xBFFF
0x9000 - 0xB7FF
0xC0
0xC000 - 0xC7FF
0xC800 - 0xEFFF
0xF9
0xF800 - 0xFFFF
0xD000 - 0xF7FF
1 _{User must initialize RAM13, RAM12 and RAM11 bits to the same value as RAMHAL bit}
MC9S12HZ256 Data Sheet, Rev. 2.04
Freescale Semiconductor
29