HCS08 datasheet(39/316 Pages) NXP

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MC9S08SG8 MCU Series Data Sheet, Rev. 8

Freescale Semiconductor

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)

Figure 4-1. MC9S08SG8 Memory Map

DIRECT PAGE REGISTERS

RAM

HIGH PAGE REGISTERS

512 BYTES

0x0000

0x007F

0x0080

0x027F

0x1800

0x17FF

0x185F

0xFFFF

0x0280

MC9S08SG8

FLASH

8192 BYTES

0x1860

MC9S08SG4

UNIMPLEMENTED

51,104 BYTES

0xE000

0xDFFF

DIRECT PAGE REGISTERS

RAM

HIGH PAGE REGISTERS

256 BYTES

0x0000

0x007F

0x0080

0x1800

0x17FF

0x185F

0xFFFF

FLASH

4096 BYTES

0x1860

0x017F

0x0180

0xF000

0xEFFF

UNIMPLEMENTED

5504 BYTES

0x027F

0x0280

UNIMPLEMENTED

5504 BYTES

RESERVED

256 BYTES

UNIMPLEMENTED

51,104 BYTES

0xE000

0xDFFF

RESERVED

4096 BYTES

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