
W29EE512
- 8 -
Command Codes for Product Identification
BYTE
SEQUENCE
ALTERNATE SOFTWARE (5)
PRODUCT IDENTIFICATION
ENTRY
ADDRESS
SOFTWARE PRODUCT
IDENTIFICATION ENTRY
SOFTWARE PRODUCT
IDENTIFICATION EXIT
DATA
ADDRESS
DATA
ADDRESS
DATA
0 Write
1 Write
2 Write
3 Write
4 Write
5 Write
5555H
2AAAH
5555H
-
-
-
AAH
55H
90H
-
-
-
5555H
2AAAH
5555H
5555H
2AAAH
5555H
AAH
55H
80H
AAH
55H
60H
5555H
2AAAH
5555H
-
-
-
AAH
55H
F0H
-
-
-
Pause 10
μ
S
Pause 10
μ
S
Pause 10
μ
S
Software Product Identification Acquisition Flow
Product Identification Entry (1)
Load data AA
to
address 5555
Load data 55
to
address 2AAA
Load data 80
to
address 5555
Load data AA
to
address 5555
Load data 55
to
address 2AAA
Load data 60
to
address 5555
Product Identification Mode (2,3)
Read address = 0
data = DA
Read address = 1
data = C8
Product Identification Exit (1)
Load data AA
to
address 5555
Load data 55
to
address 2AAA
Load data FO
to
address 5555
Normal Mode
(4)
Pause 10 S
Pause 10 S
Notes for software product identification:
(1) Data format: DQ7
DQ0 (Hex); address format: A14
A0 (Hex).
(2) A1
A16 = V
IL
; manufacture code is read for A0 = V
IL
; device code is read for A0 = V
IH
.
(3) The device does not remain in identification mode if power down.
(4) The device returns to standard operation mode.
(5) This product supports both the JEDEC standard 3 byte command code sequence and original 6 byte command code
sequence. For new designs, Winbond recommends that the 3 byte command code sequence be used.