IC89C54/58/64

Integrated Circuit Solution Inc.

7

MC009-0B

OPERATION DESCRIPTPION

The detail desription of the IC89C54/58/64 included

in this desription are:

• Memory Map and Registers

• Flash Memory

Other informations refer to IC80C52/32 data sheet except

flash memory.

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]

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.

Table 2. Program memory and Data memory sizes

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.

Figure 5. The Flash Architecture of IC89C54/58/64

IC89C54

3 Lock Bits Falsh Cell

Dummy Address

3FFFH

0000H

0032H

0030H

7FFFH

0000H

0032H

0030H

EFFFH

0000H

0032H

0030H

FFFFH

F000H

16K Flash

(Block 1)

3x8 bits

Signature Bytes

Dummy Address

32K Flash

(Block 1)

3x8 bits

Signature Bytes

60K Flash

(Block 1)

4K Flash

(Block 2)

3x8 bits

Signature Bytes

3 Lock Bits Falsh Cell

3 Lock Bits Falsh Cell

IC89C58

IC89C64