Preliminary W29C011A
Command Codes for Product Identification
BYTE SEQUENCE
SOFTWARE PRODUCT
IDENTIFICATION ENTRY
ADDRESS
DATA
5555H
AAH
2AAAH
55H
5555H
80H
5555H
AAH
2AAAH
55H
5555H
60H
Pause 10
µS
SOFTWARE PRODUCT
IDENTIFICATION EXIT
ADDRESS
DATA
5555H
AAH
2AAAH
55H
5555H
F0H
-
-
-
-
-
-
Pause 10
µS
0 Write
1 Write
2 Write
3 Write
4 Write
5 Write
Software Product Identification Acquisition Flow
Product Identification Entry(1)
Load data AA
to
address 5555
Product Identification Mode(2,3)
Product Identification Exit(1)
Load data 55
to
address 2AAA
Load data AA
to
address 5555
Load data 80
to
address 5555
Read address = 0
data = DA
Load data 55
to
address 2AAA
Load data AA
to
address 5555
Load data FO
to
address 5555
Load data 55
to
address 2AAA
Read address = 1
data = C1
S
Pause 10
µ
m
Load data 60
to
address 5555
(4)
Normal Mode
Pause 10
µ
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.
-8-
WINBOND [ WINBOND ]
