Rainbow Electronics W27E520 - Manual (Page 13)

Advance Information W27E520
Publication Release Date: 4/26/2000
- 13 - Revision A1
SMART ERASE ALGORITHM 2
Start
OE/Vpp = 13V
Last
Address?
OE/Vpp = V
Compare
All Bytes to
FFs (HEX)
Pass
Device
Increment
Address
No
Fail
Fail
Fail
Device
X = 0
Program One 50 S Pulse
with Address = 5555(Hex) Data = AA(Hex)
Erase
Verify
X = 20?
No
Yes
Pass
Pass
Yes
OE/Vpp = V IL
IL
Increment X
Power
Down
Program One 100 mS Pulse
with Address = 2AAA(Hex) Data = 10(Hex)
µ
V = 6.5V DD
V = 6.5V DD
V = 5.0V DD