M28W640 STMicroelectronics, M28W640 Datasheet - Page 41

• Manufacturer Part Number: M28W640
• Description: 64 Mbit 4Mb x16/ Boot Block 3V Supply Flash Memory
• Manufacturer: STMicroelectronics

Table 29. Device Geometry Definition
Offset Word
Mode
2Ch
2Ah
2Bh
27h
28h
29h
2Dh
2Dh
2Eh
2Fh
30h
31h
32h
33h
34h
2Eh
2Fh
30h
31h
32h
33h
34h
007Eh
007Eh
0032h
0001h
0000h
0002h
0000h
0002h
0000h
0000h
0001h
0007h
0000h
0020h
0000h
0007h
0000h
0020h
0000h
0000h
0000h
0001h
Data
Device Size = 2
Flash Device Interface Code description
Maximum number of bytes in multi-byte program or page = 2
Number of Erase Block Regions within the device.
It specifies the number of regions within the device containing contiguous
Erase Blocks of the same size.
Region 1 Information
Number of identical-size erase block = 007Eh+1
Region 1 Information
Block size in Region 1 = 0100h * 256 byte
Region 2 Information
Number of identical-size erase block = 0007h+1
Region 2 Information
Block size in Region 2 = 0020h * 256 byte
Region 1 Information
Number of identical-size erase block = 0007h+1
Region 1 Information
Block size in Region 1 = 0020h * 256 byte
Region 2 Information
Number of identical-size erase block = 007Eh=1
Region 2 Information
Block size in Region 2 = 0100h * 256 byte
n
in number of bytes
Description
M28W640CT, M28W640CB
n
64 KByte
64 KByte
8 MByte
8 KByte
8 KByte
Async.
Value
127
127
x16
4
2
8
8
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