W27E040 Datasheet, PDF (10/15 Pages) Winbond – 512K X 8 ELECTRICALLY ERASABLE EPROM

W27E040
SMART PROGRAMMING ALGORITHM
Start
Address = First Location
Vcc = 5V
Vpp = 12V
X=0
Program One 100 µS Pulse
Increment X
Yes
X = 25?
No
Fail
Verify One Byte
Fail
Verify One Byte
Increment ^No
Address
Pass
Last
Address?
Yes
Pass
*Program whole chip
without data verification and read
Vcc = 5V
Vpp = 5V
Compare All Bytes ^Fail
to Original Data
Pass
Pass
Device
*: Program the whole chip again without data verification and read.
Fail
Device
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