HCS08 datasheet(31/198 Pages) NXP

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MC9S08QD4 Series MCU Data Sheet, Rev. 6

Freescale Semiconductor

Chapter 4

Memory Map and Register Definition

4.1

MC9S08QD4 Series Memory Maps

As shown in Figure 4-1, on-chip memory in the MC9S08QD4 series MCU consists of RAM, flash

program memory for non-volatile 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)

•

Non-volatile registers (0xFFB0 through 0xFFBF)

Figure 4-1. MC9S08QD4 Series Memory Maps

DIRECT PAGE REGISTERS

RAM

HIGH PAGE REGISTERS

256 BYTES

0x0000

0x005F

0x0060

0x1800

0x17FF

0x184F

0xFFFF

FLASH

4096 BYTES

0x1850

0x015F

0x0160

UNIMPLEMENTED

5,792 BYTES

UNIMPLEMENTED

55,216 BYTES

0xF000

0xEFFF

DIRECT PAGE REGISTERS

RESERVED — 32 BYTES

HIGH PAGE REGISTERS

0x0000

0x005F

0x0060–0x07F

0x1800

0x17FF

0x184F

0xFFFF

FLASH

2048 BYTES

0x1850

0x0100–0x015F

UNIMPLEMENTED

5,792 BYTES

UNIMPLEMENTED

55,216 BYTES

0xF000

0xEFFF

RESERVED — 96 BYTES

RESERVED — 2048 BYTES

0xF800

0xF7FF

MC9S08QD4

MC9S08QD2

RAM — 128 BYTES

0x0080–0x0FF

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