W29F102P-45 WINBOND [Winbond], W29F102P-45 Datasheet - Page 9

• Manufacturer Part Number: W29F102P-45
• Description: 64K 16 CMOS FLASH MEMORY
• Manufacturer: WINBOND [Winbond]

Command Codes for Product Identification and Boot Block Lockout Detection
Software Product Identification and Boot Block Lockout Detection Acquisition Flow
Notes for software product identification/boot block lockout detection:
(1) Data Format: DQ15-DQ8 (Don't Care), DQ7 DQ0 (Hex); Address Format: A14 A0 (Hex)
(2) A1 A15 = V
(3) The device does not remain in identification and boot block lockout detection mode if power down.
(4) If the output data is "FF Hex," the boot block programming lockout feature is activated; if the output data "FE Hex," the lockout feature is
(5) The device returns to standard operation mode.
(6) Optional 1-write cycle (write F0 hex at XXXX address) can be used to exit the product identification/boot block lockout detection.
SEQUENCE
inactivated and the block can be programmed.
2 Write
3 Write
1 Write
BYTE
IL
; manufacture code is read for A0 = V
Identification
Product
Entry (1)
address 5555
address 5555
address 2AAA
Pause 10 S
Load data AA
Load data 55
Load data 90
to
to
to
PRODUCTIDENTIFICATION/BOOT
BLOCK LOCKOUT DETECTION
ADDRESS
2AAA
5555
5555
Pause 10 S
ENTRY
Mode (3)
Identification
and Boot Block
Lockout Detection
Product
Read address = 0002
Read address = 0001
Read address = 0000
IL
; device code is read for A0 = V
data = FF/FE
data = DA
data = 2F
DATA
AA
55
90
- 9 -
(4)
(2)
(2)
IDENTIFICATION/BOOT BLOCK LOCKOUT
IH
.
ADDRESS
2AAAH
5555H
5555H
Identification Exit(6)
Product
SOFTWARE PRODUCT
Publication Release Date: June 1999
DETECTION EXIT (6)
Normal Mode
address 5555
Load data 55
address 2AAA
Load data AA
address 5555
Load data F0
Pause 10 S
Pause 10 S
to
to
to
W29F102
DATA
AAH
F0H
55H
(5)
Revision A4