W27E257-15 WINBOND [Winbond], W27E257-15 Datasheet - Page 11

• Manufacturer Part Number: W27E257-15
• Description: 32K X 8 ELECTRICALLY ERASABLE EPROM
• Manufacturer: WINBOND [Winbond]

SMART ERASE ALGORITHM
Increment
Address
No
Chip Erase 100 mS Pulse
Address = First Location
A9 = 14V; A0 = V
FFs (HEX)
Increment X
Compare
All Bytes to
Vpp = 14V
Vcc = 5V
Last
Address?
Vcc = 5V
Vpp = 5V
Pass
Device
Start
X = 0
Erase
Verify
Yes
Pass
Pass
IL
- 11 -
Fail
Fail
Publication Release Date: January 1997
Yes
No
Fail
Device
X = 20?
W27E257
Revision A3