IC89C54 Datasheet, PDF (7/24 Pages) Integrated Circuit Solution Inc – CMOS SINGLE CHIP 8-BIT MICROCONTROLLER with 16/32/64-Kbytes of FLASH

IC89C54/58/64
OPERATION DESCRIPTPION
The detail desription of the IC89C54/58/64 included
in this desription are:
• Memory Map and Registers
• Flash Memory
MEMORY MAP AND REGISTERS
Table 1 shows program memory and data memory
size versus three products. The IC89C54/58/64 series
includes a standard IC80C32 and a 16K/32K/64K Flash
Memory. The program memory and data memory access
ranges are listed table 2.
Other informations refer to IC80C52/32 data sheet except
flash memory.
Table 2. Program memory and Data memory sizes
Main Flash
RAM Size
IC89C54 16K Bytes : [0H~3FFFH] 256 Bytes : [ 0-FFH]
IC89C58 32K Bytes : [0H~7FFFH] 256 Bytes : [ 0-FFH]
IC89C64 64K Bytes : [0H~FFFFH] 256 Bytes : [ 0-FFH]
FLASH MEMORY PROGRAMMING
The Flash architecture of IC89C54/58/64 is shown in Figure 5. IC89C54/58 include block 1 and lock bits block.
The signature bytes are fixed value reside in MCU, they are read only. Block 2 resides in IC89C64 only.
0030H _{3x8 bits}
0032H ^{Signature Bytes}
0000H
3FFFH
16K Flash
(Block 1)
Dummy Address
3 Lock Bits Falsh Cell
IC89C54
0030H _{3x8 bits}
0032H ^{Signature Bytes}
0000H
32K Flash
(Block 1)
7FFFH
Dummy Address
3 Lock Bits Falsh Cell
IC89C58
0030H _{3x8 bits}
0032H ^{Signature Bytes}
0000H
60K Flash
(Block 1)
EFFFH
F000H
FFFFH
4K Flash
(Block 2)
3 Lock Bits Falsh Cell
IC89C64
Figure 5. The Flash Architecture of IC89C54/58/64
Integrated Circuit Solution Inc.
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MC009-0B