Document Number: 002-00833 Rev. *L
Page 62 of 74
S29VS256R
S29VS128R
S29XS256R
S29XS128R
Common F
lash Inter
face
Device Geometry Definition
(SA) + 27h
(SA) + 4Eh
0019h
0018h
Device Size = 2
N
byte
(SA) + 28h
(SA) + 50h
0001h
Flash Device Interface
0h = x8
1h = x16
2h = x8/x16
3h = x32 [lower byte]
(SA) + 29h
(SA) + 52h
0000h
[upper byte] (00h = not supported)
(SA) + 2Ah
(SA) + 54h
0006h
Max. number of bytes in multi-byte buffer write = 2
N
[lower byte]
(SA) + 2Bh
(SA) + 56h
0000h
[upper byte] (00h = not supported)
(SA) + 2Ch
(SA) + 58h
0002h
Number of Erase Block Regions within device
(Number of regions within the device containing one
or more contiguous Erase Blocks of the same size)
(SA) + 2Dh
(SA) + 5Ah
00FEh
(Top Boot)
007Eh
(Top Boot)
Erase Block Region 1 information
[lower byte] - Number of Erase sectors of identical
size within the Erase Block Region.
00h = 1 sector;
01h = 2 sectors
02h = 3 sectors
03h = 4 sectors
0003h
(Bottom Boot)
0003h
(Bottom Boot)
(SA) + 2Eh
(SA) + 5Ch
0000h
[upper byte]
(SA) + 2Fh
(SA) + 5Eh
0000h (Top Boot)
[lower byte] - Sector Size in bytes divided by 256
(n [bytes]h = sector size / 256)
0080h (Bottom Boot)
(SA) + 30h
(SA) + 60h
0002h (Top Boot)
[upper byte]
0000h (Bottom Boot)
(SA) + 31h
(SA) + 62h
0003h
(Top Boot)
0003h
(Top Boot)
Erase block Region 2 Information
00FEh
(Bottom Boot)
007Eh
(Bottom Boot)
(SA) + 32h
(SA) + 64h
0000h
[upper byte]
(SA) + 33h
(SA) + 66h
0080h (Top Boot)
[lower byte] - Sector Size in bytes divided by 256
(n [bytes]h = sector size / 256)
0000h (Bottom Boot)
(SA) + 34h
(SA) + 68h
0000h (Top Boot)
[upper byte]
0002h (Bottom Boot)
Table 44. ID/CFI Data (Continued)
Word Offset Address
Byte Offset Address
DATA
Description
VS256R/XS256R VS128R/XS128R