DS89C420 Datasheet, PDF (14/59 Pages) Dallas Semiconductor – Ultra-High-Speed Microcontroller

Figure 2. Memory Map
FFFF
DS89C420
FFFF
INTERNAL
REGISTERS
128 Bytes SFR
FF
128 Bytes
Indirect
Addressing
80
7F
2F
20 ^{Bit Addressable}
1F _{Bank 3}
Bank 2
Bank 1
Bank 0
00
03FF
INTERNAL
MEMORY
1K x 8
SRAM
Data OR
prog mem
addr from
0000 ^{400 - 7FF}
3FFF
8K x 8
Flash
Memory
(Program)
2000
1FFF
8K x 8
Flash
Memory
(Program)
0000
External
Program
Memory
4000
0000
External
Data
Memory
03FF
0000
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