28F640L30, 28F128L30, 28F256L30
C.3
CFI Query Identification String
The Identification String provides verification that the component supports the Common Flash
Interface specification. It also indicates the specification version and supported vendor-specified
command set(s).
Table 21. CFI Identification
Hex
Code
--51
--52
--59
--03
--00
--0A
--01
--00
--00
--00
Offset Length
Description
Query-unique ASCII string “QRY“
Add.
10:
11:
12:
13:
14:
15:
16:
17:
18:
19:
Value
"Q"
"R"
3
10h
"Y"
2
2
2
2
Primary vendor command set and control interface ID code.
16-bit ID code for vendor-specified algorithms
Extended Query Table primary algorithm address
13h
15h
17h
19h
Alternate vendor command set and control interface ID code.
0000h means no second vendor-specified algorithm exists
Secondary algorithm Extended Query Table address.
0000h means none exists
1A: --00
Table 22. System Interface Information
Hex
Offset
Length
Description
Add. Code Value
1Bh
1
V
V
V
V
CC logic supply minimum program/erase voltage
1B:
1C:
1D:
1E:
--17
--20
--85
--95
1.7V
2.0V
8.5V
9.5V
bits 0–3 BCD 100 mV
bits 4–7 BCD volts
CC logic supply maximum program/erase voltage
1Ch
1Dh
1Eh
1
1
1
bits 0–3 BCD 100 mV
bits 4–7 BCD volts
PP [programming] supply minimum program/erase voltage
bits 0–3 BCD 100 mV
bits 4–7 HEX volts
PP [programming] supply maximum program/erase voltage
bits 0–3 BCD 100 mV
bits 4–7 HEX volts
“n” such that typical single word program time-out = 2n µ-sec
“n” such that typical max. buffer write time-out = 2n µ-sec
“n” such that typical block erase time-out = 2n m-sec
1Fh
20h
21h
22h
23h
24h
25h
26h
1
1
1
1
1
1
1
1
1F:
20:
21:
22:
23:
24:
25:
26:
--08 256µs
--09 512µs
--0A
--00
1s
NA
“n” such that typical full chip erase time-out = 2n m-sec
“n” such that maximum word program time-out = 2n times typical
“n” such that maximum buffer write time-out = 2n times typical
“n” such that maximum block erase time-out = 2n times typical
“n” such that maximum chip erase time-out = 2n times typical
--01 512µs
--01 1024µs
--02
--00
4s
NA
Datasheet
85
INTEL [ INTEL ]
