Datasheet

MC9S08GT16A/GT8A Data Sheet, Rev. 1
Freescale Semiconductor 41
Chapter 4
Memory
4.1 MC9S08GT16A/GT8A Memory Map
As shown in Figure 4-1, on-chip memory in the MC9S08GT16A/GT8A series of MCUs consists of RAM,
FLASH program memory for nonvolatile data storage, plus I/O and control/status registers. The registers
are divided into three groups:
• Direct-page registers (0x0000 through 0x007F)
• High-page registers (0x1800 through 0x182B)
• Nonvolatile registers (0xFFB0 through 0xFFBF)
Figure 4-1. MC9S08GT16A/GT8A Memory Map
DIRECT PAGE REGISTERS
HIGH PAGE REGISTERS
FLASH
8192 BYTES
0x0000
0x007F
0x0080
0x047F
0x1800
0x17FF
0x182B
0x182C
0xFFFF
0x0880
RAM 1024 BYTES
UNIMPLEMENTED
4992 BYTES
0xE000
0xDFFF
MC9S08GT8A
DIRECT PAGE REGISTERS
HIGH PAGE REGISTERS
FLASH
16384 BYTES
0x0000
0x007F
0x0080
0x1800
0x17FF
0x182B
0x182C
0xFFFF
0x0480
RAM 2048 BYTES
UNIMPLEMENTED
42964 BYTES
UNIMPLEMENTED
3968 BYTES
0xC000
0xBFFF
MC9S08GT16A
0x087F
0x0880
UNIMPLEMENTED
3968 BYTES
0x087F
Reserved 1024 BYTES
UNIMPLEMENTED
42964 BYTES
0xC000
0xBFFF
Reserved
8192 BYTES