W39L040 Datasheet, PDF (14/27 Pages) Winbond – 512 K X 8 CMOS FLASH MEMORY

W39L040
Software Product Identification and Boot Block Lockout Detection Flow Chart
Product
Identification
Entry (1)
Load data AA
to
address 5555
Product
Identification
and Boot Block
Lockout
MD otdet(i3)
Product
Identification Exit(6)
Load data AA
to
address 5555
Load data 55
to
address 2AAA
(2)
Read address = 0000
data = DA
Load data
55 to
address 2AAA
Load data 90
to
address 5555
(2)
Read address = 0001
data = B6
Load data F0
to
address 5555
Pause 10µ S
Read address=02/7FFF2(4)
for Bottom/Top
data:in DQ0="1" or "0"
for 64K Boot Block
or DQ1="1" or "0"
for 16K Boot Block
Pause 10µ S
(5)
Normal Mode
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