W29C102 Datasheet, PDF (8/21 Pages) Winbond – 64K 16 CMOS FLASH MEMORY

W29C102
Command Codes for Product Identification
BYTE
SEQUENCE
ALTERNATE SOFTWARE (5)
PRODUCT IDENTIFICATION
ENTRY
ADDRESS
DATA
SOFTWARE PRODUCT
IDENTIFICATION ENTRY
ADDRESS
DATA
0 Write
1 Write
2 Write
3 Write
4 Write
5 Write
5555H
AAH
2AAAH
55H
5555H
90H
-
-
-
-
-
-
Pause 10 µS
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
Software Product Identification Acquisition Flow
Product Identification Entry (1) Product Identification Mode (2, 3) Product Identification Exit (1)
Load data AAAA
to
address 5555
Load data 5555
to
address 2AAA
Load data AAAA
to
address 5555
Load data 8080
to
address 5555
Read address = 0
data = 00DA
Load data 5555
to
address 2AAA
Load data AAAA
to
address 5555
Load data F0F0
to
address 5555
Load data 5555
to
address 2AAA
Load data 6060
to
address 5555
Read address = 1
data = 004F
Pause 10 µS
(4)
Normal Mode
Pause 10 µS
Notes for software product identification:
(1) Data format: DQ15−DQ0 (Hex); address format: A14−A0 (Hex).
(2) A1−A15 = VIL; manufacture code is read for A0 = VIL; device code is read for A0 = VIH.
(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.
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