參數(shù)資料
型號(hào): HN58V257A
廠商: Hitachi,Ltd.
英文描述: 256k EEPROM (32-kword ×8-bit)(256k EEPROM (32k字 ×8位))
中文描述: 256k的EEPROM(32 KWord的× 8位)(256k的EEPROM(32K的字× 8位))
文件頁數(shù): 19/26頁
文件大小: 170K
代理商: HN58V257A
HN58V256A Series, HN58V257A Series
19
(2)
Protection by
RES
(only the HN58V257A series)
The unprogrammable state can be realized by that the CPU’s reset signal inputs directly to the EEPROM’s
RES
pin.
RES
should be kept V
SS
level during V
CC
on/off.
The EEPROM breaks off programming operation when
RES
becomes low, programming operation doesn’t
finish correctly in case that
RES
falls low during programming operation.
RES
should be kept high for 10
ms after the last data input.
V
CC
RES
WE
or
CE
100
μ
s min
10 ms min
1
μ
s min
Program inhibit
Program inhibit
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