Datasheet

MC9S08QG8 and MC9S08QG4 Data Sheet, Rev. 5
Freescale Semiconductor 39
Chapter 4
Memory Map and Register Definition
4.1 MC9S08QG8/4 Memory Map
As shown in Figure 4-1, on-chip memory in the MC9S08QG8/4 series of MCUs consists of RAM, FLASH
program memory for nonvolatile data storage, and I/O and control/status registers. The registers are
divided into these groups:
• Direct-page registers (0x0000 through 0x005F)
• High-page registers (0x1800 through 0x184F)
• Nonvolatile registers (0xFFB0 through 0xFFBF)
Figure 4-1. MC9S08QG8/4 Memory Map
DIRECT PAGE REGISTERS
RAM
HIGH PAGE REGISTERS
512 BYTES
0x0000
0x005F
0x0060
0x025F
0x1800
0x17FF
0x184F
0xFFFF
0x0260
MC9S08QG8
FLASH
8192 BYTES
0x1850
MC9S08QG4
UNIMPLEMENTED
51,120 BYTES
0xE000
0xDFFF
DIRECT PAGE REGISTERS
RAM
HIGH PAGE REGISTERS
256 BYTES
0x0000
0x005F
0x0060
0x1800
0x17FF
0x184F
0xFFFF
FLASH
4096 BYTES
0x1850
0x015F
0x0160
0xF000
0xEFFF
UNIMPLEMENTED
5536 BYTES
0x025F
0x0260
UNIMPLEMENTED
5536 BYTES
RESERVED
256 BYTES
UNIMPLEMENTED
51,120 BYTES
0xE000
0xDFFF
RESERVED
4096 BYTES