w27c520 Winbond Electronics Corp America, w27c520 Datasheet - Page 12
w27c520
Manufacturer Part Number
w27c520
Description
64k X 8 Electrically Erasable Eprom
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W27C520.pdf
(16 pages)
- Current page: 12 of 16
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SMART ERASE ALGORITHM 1
Address
Increment
No
Chip Erase 100 mS Pulse
Address = First Location
A9 = 13V; A8&A11 = V
V
OE/Vpp = 13V
OE/Vpp = V
OE/Vpp = V
DD
Increment X
V
All Bytes to
FFs (HEX)
V
Compare
Address?
Pass
Device
DD
DD
A10 = V
= 3.3 or 5.0V
Erase
Verify
Power
Down
X = 0
Start
Last
= 6.5V
= 6.5V
Yes
Pass
Pass
IH
IL
IL
- 12 -
Fail
IL
Fail
Preliminary W27C520
Yes
No
Fail
Device
X = 20?
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