w39l040p-90k Winbond Electronics Corp America, w39l040p-90k Datasheet - Page 14

• Manufacturer Part Number: w39l040p-90k
• Manufacturer: Winbond Electronics Corp America

Software Product Identification and Boot Block Lockout Detection Flow Chart
Entry (1)
Identification
Product
address 5555
address 5555
address 2AAA
Pause 10 S
Load data AA
Load data 55
Load data 90
to
to
to
µ
Identification
and Boot Block
Lockout
Mode (3)
D t ti
Product
Read address=02/7FFF2
data:in DQ0="1" or "0"
Read address = 0001
for Bottom/Top
Read address = 0000
for 64K Boot Block
for 16K Boot Block
or DQ1="1" or "0"
data = B6
data = DA
- 14 -
(4)
(2)
(2)
Product
Identification Exit(6)
Normal Mode
address 5555
Load data
55
Load data AA
address 2AAA
address 5555
Load data F0
Pause 10 S
to
to
to
µ
W39L040
(5)