IC89E54 Datasheet, PDF (9/36 Pages) Integrated Circuit Solution Inc – 8-BITS SINGLE MICROCONTROLLER with 16/32/64-Kbytes of FLASH, 256 byte +512 byte RAM

IC89E54/58/64
FFFFH
Internal Range
(Block 2)
F000H
EFFFH
Internal Range
(Block 1)
FFFFH
External Range
0000H
EA = 0
0000H
EA = 1
Figure 7. IC89E64 Flash Architecture
FFH
Indirect RAM
80H
7FH
Direct/Indirect RAM
00H
EXTRAM = 0
FFFFH
FFH
SFR
80H
External Range
EXTRAM = 1
FFFFH
External RAM
0000H
0200H
01FFH
Auxiliary
Internal RAM
0000H
Figure 8. IC89E54/58/64 Data Memory Architecture
Integrated C ircuitSolution Inc.
9
MC012-0C 11/16/2001