W49L102Q-55B View Datasheet(PDF) - Winbond

Part Name

Description

View to exact match

W49L102Q-55B

64K x 16 CMOS 3.3V FLASH MEMORY

Winbond 

Preliminary W49L102

Command Codes for Boot Block Lockout Enable

BYTE SEQUENCE

1 Write

BOOT BLOCK LOCKOUT FEATURE SET

ADDRESS

DATA

5555H

AAH

2 Write

3 Write

4 Write

2AAAH

5555H

5555H

55H

80H

AAH

5 Write

6 Write

2AAAH

55H

5555H

40H

Pause 1 Sec.

Boot Block Lockout Enable Acquisition Flow

Boot Block Lockout

Feature Set Flow

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 40

to

address 5555

Pause 1 Sec.

Exit

Notes for boot block lockout enable:

Data Format: DQ15-DQ8 Don't Care), DQ7−DQ0 (Hex)

Address Format: A14−A0 (Hex)

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