发明名称 |
DATA WRITE CONTROL MEANS |
摘要 |
The means is of a data protecting means (310) for preventing erroneous writing in a data-holding circuit (307). A data protecting circuit (311) receives a data protect set/release select signal Sa outputted from a processor (330) and starts a second clocking means (316). When the second clocking means (316) measures a period T2, the data protecting circuit (311) detects the level of a chip select signal CS produced by a power source monitoring circuit (320) and sends a data protecting signal DP corresponding to the level of the signal Sa to a data-holding circuit (307) only when a main power source (305) is judged to be normal. |
申请公布号 |
KR970003318(B1) |
申请公布日期 |
1997.03.17 |
申请号 |
KR19900071834 |
申请日期 |
1990.08.21 |
申请人 |
OKI ELECTRIC IND.KK. |
发明人 |
ARAI, YASUO;SATO, HISATAKE |
分类号 |
G06F1/30;G06F11/00;G06F11/14;G11C7/22;(IPC1-7):G06F12/16 |
主分类号 |
G06F1/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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