Systems and methods for memory control
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United States of America Patent
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Jun 22, 1999
Issued Date -
N/A
app pub date -
Jun 7, 1995
filing date -
Jun 11, 1991
priority date (Note) -
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status (Latency Note)
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Abstract
A memory controller for supplying backup battery power when a main power supply voltage drops together with programmable plus power fail write protection. The controller includes supravoltage induced sleep mode operation, MOS switching between backup batteries during backup operation based on battery voltage levels and discharge circuitry for battery disposal.
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