发明名称 Memory write protection using timers
摘要 A memory write-enable circuit is disclosed which protects data stored in a random access memory (RAM) from erroneous write commands. The circuit is enabled, permitting write commands to RAM for a fixed time interval, only when two predetermined control signals occur within a prescribed time period. The circuit is disabled either by the elapse of the fixed time interval or by a clear signal.
申请公布号 US4493031(A) 申请公布日期 1985.01.08
申请号 US19820411270 申请日期 1982.08.25
申请人 AT&T BELL LABORATORIES 发明人 SILVERIO, VINCENT J.
分类号 G06F12/14;(IPC1-7):G06F7/00 主分类号 G06F12/14
代理机构 代理人
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