Microcontroller circuit and power saving method thereof
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United States of America Patent
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Issued Date -
Dec 11, 2008
app pub date -
Jun 8, 2007
filing date -
Jun 8, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A microcontroller circuit provides proper clocks to a central processing unit of a microcontroller and peripherals according to a power saving mode and operating conditions of the peripherals. The microcontroller circuit comprises a prescaler, a second multiplexer, a central processing unit, a first switch, a second switch, a first peripheral, and an execution unit. The execution unit is installed in the central processing unit and used for controlling the first switch and the second switch. The switches control the transmission of clocks according to the power saving mode operated by the microcontroller circuit, so that the central processing unit and each peripheral can work with a proper clock to reduce power use.
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