W39L040Q-90 WINBOND [Winbond], W39L040Q-90 Datasheet - Page 13

• Manufacturer Part Number: W39L040Q-90
• Description: 512 K X 8 CMOS FLASH MEMORY
• Manufacturer: WINBOND [Winbond]

Boot Block Lockout Enable Flow Chart
Boot Block Lockout
Feature Set Flow
Load data 40/70
address 7FFFF/0
Load data XX
address 2AAA
address 5555
address 2AAA
address 5555
Load data AA
address 5555
address 5555
Load data AA
Load data 55
Load data 80
Load data 55
to
to
to
to
to
to
to
7FFFF(XX) to lock Top Boot Block
000000(XX) to lock Bottom Boot Block
40 to lock 64K Boot Block
70 to lcok 16K Boot Block
- 13 -
Publication Release Date: February 10, 2003
Pause 2 mS
Exit
W39L040
Revision A3