W27C512 Datasheet, PDF (12/15 Pages) Winbond – 64K X 8 ELECTRICALLY ERASABLE EPROM

SMART ERASE ALGORITHM
Start
X=0
Vcc = 5V
OE/Vpp = 14V
A9 = 14V; A0 = VIL
Chip Erase 100 mS Pulse
Address = First Location
Increment X
Vcc = 3.75V
OE/Vpp = VIL
Increment
Address
Erase
Fail
Verify
Pass
No
Last
Address?
Yes
Vcc = 5V
OE/Vpp = VIL
Compare
Fail
All Bytes to
FFs (HEX)
Pass
Pass
Device
W27C512
No
X = 20 ?
Yes
Fail
Device
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