參數(shù)資料
型號: HN58C257A
廠商: Hitachi,Ltd.
英文描述: 256 k EEPROM (32-kword ×8-bit)(256k EEPROM (32k字 ×8位))
中文描述: 256畝的EEPROM(32 KWord的× 8位)(256k的EEPROM(32K的字× 8位))
文件頁數(shù): 14/26頁
文件大?。?/td> 193K
代理商: HN58C257A
HN58C256A Series, HN58C257A Series
14
Toggle bit
This device provide another function to determine the internal programming cycle. If the EEPROM is set
to read mode during the internal programming cycle, I/O6 will charge from “1” to “0” (toggling) for each
read. When the internal programming cycle is finished, toggling of I/O6 will stop and the device can be
accessible for next read or program.
Toggle bit Waveform
Notes: 1. I/O6 beginning state is "1".
2. I/O6 ending state will vary.
3. See AC read characteristics.
4. Any address location can be used, but the address must be fixed.
WE
t
OES
OE
CE
Dout
I/O6
Dout
Dout
Dout
Next mode
t
OE
t
CE
t
DW
t
WC
t
OEH
*1
*2
*2
Address
*3
*3
*4
Din
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