32Mb, 64Mb, 128Mb: 3V Embedded Parallel NOR Flash
Common Flash Interface
Table 26: Device Geometry Definition (Continued)
Address
x16
x8
Data
Description
Value
2Ch
58h
(See table Number of erase block regions. It specifies the number of regions
–
below)
containing contiguous erase blocks of the same size.
01h = Uniform device
02h = Boot device
2Dh
2Eh
2Fh
30h
5Ah
5Ch
5Eh
60h
(See table Erase block region 1 information
below) Bits[15:0] = y, y + 1 = Number of identical-size erase blocks
Bits[31:16] = z, block size in region 1 is z x 256 bytes
–
–
0
0
31h
32h
33h
34h
62h
64h
66h
68h
(See table Erase block region 2 information
below)
Bits[15:0] = y, y + 1 = Number of identical-size erase blocks
Bits[31:16] = z, block size in region 1 is z x 256 bytes
35h
36h
37h
38h
6Ah
6Ch
6Eh
70h
0000h
0000h
0000h
0000h
Erase block region 3 information
39h
3Ah
3Bh
3Ch
72h
74h
76h
78h
0000h
0000h
0000h
0000h
Erase block region 4 information
1. The value at 2Ah in the CFI region is set to 08h (256 bytes) due to compatibility issues.
The maximum 256-word program buffer can be used to optimize system program per-
formance.
Note:
Table 27: Erase Block Region Information
32Mb
64Mb
Bottom
02h
128Mb
Uniform
01h
Address
2Ch
Top
02h
07h
00h
20h
00h
3Eh
00h
00h
01h
Bottom
02h
Uniform
01h
Top
02h
07h
00h
20h
00h
7Eh
00h
00h
01h
Uniform
01h
2Dh
2Eh
07h
3Fh
07h
7Fh
7Fh
00h
00h
00h
00h
00h
2Fh
20h
00h
20h
00h
00h
30h
00h
01h
00h
01h
02h
31h
3Eh
00h
7Eh
00h
00h
32h
00h
00h
00h
00h
00h
33h
00h
00h
00h
00h
00h
34h
01h
00h
01h
00h
00h
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