Common flash interface (CFI)
M29W800DT, M29W800DB
(1)
Table 23. CFI query identification string
Address
Data
Description
Value
x 16
x 8
10h
11h
12h
13h
14h
15h
16h
17h
18h
19h
1Ah
20h
22h
24h
26h
28h
2Ah
2Ch
2Eh
30h
32h
34h
0051h
‘Q’
‘R’
‘Y’
0052h Query unique ASCII string ‘QRY’
0059h
0002h
AMD
Primary algorithm command set and control interface ID
code 16-bit ID code defining a specific algorithm
compatible
0000h
0040h
Address for primary algorithm extended query table (see
Table 26)
P = 40h
NA
0000h
0000h
Alternate vendor command set and control interface ID
code second vendor - specified algorithm supported
0000h
0000h
0000h
Address for alternate algorithm extended query table
NA
1. Query data are always presented on the lowest order data outputs (DQ7-DQ0) only. DQ8-DQ15 are ‘0’.
Table 24. CFI query system interface information
Address
Data
0027h
0036h
Description
Value
2.7 V
3.6 V
x 16
x 8
V
CC logic supply minimum program/erase voltage
1Bh
36h
bit 7 to 4
bit 3 to 0
BCD value in volts
BCD value in 100 mV
VCC logic supply maximum program/erase voltage
1Ch
38h
bit 7 to 4
bit 3 to 0
BCD value in volts
BCD value in 100 mV
1Dh
1Eh
1Fh
20h
21h
22h
23h
24h
25h
26h
3Ah
3Ch
3Eh
40h
42h
44h
46h
48h
4Ah
4Ch
0000h VPP [programming] supply minimum program/erase voltage
0000h PP [programming] supply maximum program/erase voltage
0004h Typical timeout per single byte/word program = 2n µs
0000h Typical timeout for minimum size write buffer program = 2n µs
000Ah Typical timeout per individual block erase = 2n ms
0000h Typical timeout for full chip erase = 2n ms (1)
NA
NA
V
16 µs
NA
1 s
0004h Maximum timeout for byte/word program = 2n times typical
0000h Maximum timeout for write buffer program = 2n times typical
0003h Maximum timeout per individual block erase = 2n times typical
0000h Maximum timeout for chip erase = 2n times typical (1)
256 µs
NA
8 s
1. Not supported in the CFI.
42/52
NUMONYX [ NUMONYX B.V ]
