W27E020 Datasheet, PDF (10/14 Pages) Winbond – 256K X 8 ELECTRICALLY ERASABLE EPROM

Preliminary W27E020
SMART PROGRAMMING ALGORITHM
Start
Address = First Location
Vcc = 5V
Vpp = 12V
X=0
Program One 100 µS Pulse
Increment X
Fail
Increment ^No
Address
Yes
X = 25?
No
Verify
One Byte
Pass
Last
Address?
Yes
Vcc = 5V
Vpp = 5V
Verify
Fail
One Byte
Pass
Compare
All Bytes to
Fail
Original Data
Pass
Pass
Device
Fail
Device
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