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參數資料
| 型號： | W27C257 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 英文描述： | 32K×8bit Electrically Eresable EPROM(32K×8位電可擦除EPROM) |
| 中文描述： | 32K的電Eresable × 8位存儲器（32K的× 8位電可擦除存儲器） |
| 文件頁數： | 11/14頁 |
| 文件大小： | 152K |
| 代理商： | W27C257 |
W27C257
Publication Release Date: September 1998
- 11 -
Revision A2
SMART ERASE ALGORITHM
Start
Vcc = 5V
Vpp = 14V
Increment X
Last
Address
Vcc = 5V
Vpp = 5V
Compare
All Bytes to
FFs (HEX)
Pass
Device
Increment
Address
No
Fail
Fail
Fail
Device
X = 0
A9 = 14V; A0 = V
Chip Erase 100 mS Pulse
Address = First Location
Erase
Verify
X = 20
No
Yes
Pass
Pass
Yes
IL
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