Semiconductor memory device asynchronously communicable with external device and asynchronous access controller for data access
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United States of America Patent
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Feb 8, 2000
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N/A
app pub date -
Dec 16, 1998
filing date -
Dec 17, 1997
priority date (Note) -
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Abstract
Data is asynchronously transferred between a semiconductor static random access memory device and an external device equipped with an asynchronous access controller by using an access request signal representative of a request for accessing data bits stored in the semiconductor static random access memory device and an acknowledge signal representative of completion of the data access, and Muller's c-elements are incorporated in the asynchronous access controller for producing the access request signal at more than one timing in each access cycle under the control of two clock signals different in phase from each other.
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