w27e520 Winbond Electronics Corp America, w27e520 Datasheet - Page 12
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w27e520
Manufacturer Part Number
w27e520
Description
64k X 8 Electrically Erasable Eprom
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W27E520.pdf
(16 pages)
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Part Number
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Quantity
Price
SMART ERASE ALGORITHM 1
Address
Increment
No
Chip Erase 100 mS Pulse
Address = First Location
A9 = 13V; A8&A11 = V
OE/Vpp = 13V
OE/Vpp = V
OE/Vpp = V
All Bytes to
Increment X
V
FFs (HEX)
V
Compare
Address?
Pass
Device
DD
V
A10 = V
DD
Verify
Power
Down
Erase
DD
X = 0
Start
Last
= 6.5V
= 6.5V
= 5.0V
Yes
Pass
Pass
IH
IL
IL
- 12 -
Fail
IL
Fail
Yes
No
Fail
Device
X = 20?
W27E520