Integrated structure microcomputer provided with non-volatile RAM memory
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United States of America Patent
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Jan 20, 1987
Grant Date -
N/A
app pub date -
Jan 31, 1984
filing date -
Aug 4, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An integrated structure composed of a processing unit (CPU), ROM memory, RAM memory and other optional functions, such as input/output etc., is arranged as a microcomputer, in which all or part of the RAM is a non-volatile memory which carries out during normal operation all the functions of a RAM while also being able, through suitable circuit structures, to store in a permanent (non-volatile) way the data contained therein, retaining the data when the power feed to the circuit is cut off, and recalling the same data at power turn-on. The structure provides for the handling of the non-volatile memory in its different functions, and its arrangement and compatibility with the processing unit, through suitable circuitry and control signals.
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