28F6408W30, 28F3204W30, 28F320W30, 28F640W30
70
Preliminary
C.4
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 C5. CFI Identification
Table C6. System Interface Information
Offset
Length
Description
Add.
10:
11:
12:
13:
14:
15:
16:
17:
18:
19:
1A:
Hex
Code Value
--51
--52
--59
--03
--00
--39
--00
--00
--00
--00
--00
10h
3
Query-unique ASCII string
“
QRY
“
"Q"
"R"
"Y"
13h
2
Primary vendor command set and control interface ID code.
16-bit ID code for vendor-specified algorithms
Extended Query Table primary algorithm address
15h
2
17h
2
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
19h
2
Offset
Length
Description
Add.
1B:
Hex
Code Value
--17
1Bh
1
1.7V
1Ch
1
1C:
--19
1.9V
1Dh
1
1D:
--B4
11.4V
1Eh
1
1E:
--C6
12.6V
1Fh
20h
21h
22h
23h
24h
25h
26h
1
1
1
1
1
1
1
1
“
n
”
such that typical single word program time-out = 2
n
μ-sec
“
n
”
such that typical max. buffer write time-out = 2
n
μ-sec
“
n
”
such that typical block erase time-out = 2
n
m-sec
“
n
”
such that typical full chip erase time-out = 2
n
m-sec
“
n
”
such that maximum word program time-out = 2
n
times typical
“
n
”
such that maximum buffer write time-out = 2
n
times typical
“
n
”
such that maximum block erase time-out = 2
n
times typical
“
n
”
such that maximum chip erase time-out = 2
n
times typical
1F:
20:
21:
22:
23:
24:
25:
26:
--04
--00
--0A
--00
--04
--00
--03
--00
16μs
NA
1s
NA
256μs
NA
8s
NA
V
PP
[programming] supply minimum program/erase voltage
bits 0
–
3 BCD 100 mV
bits 4
–
7 HEX volts
V
PP
[programming] supply maximum program/erase voltage
bits 0
–
3 BCD 100 mV
bits 4
–
7 HEX volts
V
CC
logic supply minimum program/erase voltage
bits 0
–
3 BCD 100 mV
bits 4
–
7 BCD volts
V
CC
logic supply maximum program/erase voltage
bits 0
–
3 BCD 100 mV
bits 4
–
7 BCD volts