Common Flash Interface (CFI)
M29W320ET, M29W320EB
(1)
Table 25.
Device Geometry Definition
Address
Data
Description
Value
x16
x8
27h
4Eh
0016h
Device Size = 2n in number of bytes
4 Mbyte
28h
29h
50h
52h
0002h
0000h
x8, x16
Async.
Flash Device Interface code description
2Ah
2Bh
54h
56h
0000h
0000h
Maximum number of bytes in multi-byte program or page = 2n
NA
2
Number of Erase Block regions. It specifies the number of
regions containing contiguous Erase Blocks of the same size.
2Ch
58h
0002h
2Dh
2Eh
5Ah
5Ch
0007h
0000h
Region 1 information
8
Number of Erase Blocks of identical size = 0007h+1
2Fh
30h
5Eh
60h
0020h
0000h
Region 1 information
8Kbyte
63
Block size in Region 1 = 0020h * 256 byte
31h
32h
62h
64h
003Eh
0000h
Region 2 information
Number of Erase Blocks of identical size = 003Eh+1
33h
34h
66h
68h
0000h
0001h
Region 2 information
64Kbyte
Block size in region 2 = 0100h * 256 byte
1. For the M29W320EB, Region 1 corresponds to addresses 000000h to 007FFFh and Region 2 to addresses 008000h to
1FFFFFh. For the M29W320ET, Region 1 corresponds to addresses 1F8000h to 1FFFFFh and Region 2 to addresses
000000h to 1F7FFFh.
Table 26. Primary Algorithm-specific extended Query table
Address
Data
Description
Value
x16
x8
40h
41h
42h
43h
44h
80h
82h
84h
86h
88h
0050h
"P"
"R"
"I"
0052h Primary Algorithm extended Query table unique ASCII string “PRI”
0049h
0031h Major version number, ASCII
0030h Minor version number, ASCII
"1"
"0"
Address Sensitive Unlock (bits 1 to 0)
0000h 00 = required, 01= not required
Silicon Revision Number (bits 7 to 2)
45h
8Ah
Yes
Erase Suspend
46h
47h
48h
49h
8Ch
8Eh
90h
92h
0002h
2
1
00 = not supported, 01 = Read only, 02 = Read and Write
Block Protection
0001h
00 = not supported, x = number of blocks in per group
Temporary Block Unprotect
0001h
Yes
04
00 = not supported, 01 = supported
Block Protect /Unprotect
0004h
04 = M29W320E
52/63
NUMONYX [ NUMONYX B.V ]
