MC9S08SG8 Datasheet, PDF (37/310 Pages) Freescale Semiconductor, Inc – Microcontrollers

Chapter 4
Memory
4.1 MC9S08SG8 Memory Map
As shown in Figure 4-1, on-chip memory in the MC9S08SG8 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 three groups:
• Direct-page registers (0x0000 through 0x007F)
• High-page registers (0x1800 through 0x185F)
• Nonvolatile registers (0xFFB0 through 0xFFBF)
0x0000
0x007F
0x0080
0x027F
0x0280
0x17FF
0x1800
0x185F
0x1860
DIRECT PAGE REGISTERS
RAM
512 BYTES
UNIMPLEMENTED
5504 BYTES
HIGH PAGE REGISTERS
0x0000
0x007F
0x0080
0x017F
0x0180
0x027F
0x0280
0x17FF
0x1800
0x185F
0x1860
DIRECT PAGE REGISTERS
RAM
256 BYTES
RESERVED
256 BYTES
UNIMPLEMENTED
5504 BYTES
HIGH PAGE REGISTERS
UNIMPLEMENTED
51,104 BYTES
UNIMPLEMENTED
51,104 BYTES
0xDFFF
0xE000
0xFFFF
FLASH
8192 BYTES
MC9S08SG8
0xDFFF
0xE000
0xEFFF
0xF000
0xFFFF
RESERVED
4096 BYTES
FLASH
4096 BYTES
MC9S08SG4
Figure 4-1. MC9S08SG8 Memory Map
MC9S08SG8 MCU Series Data Sheet, Rev. 0
Freescale Semiconductor
PRELIMINARY
37