Integrated circuit with self-proofreading function and measuring device using the same
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United States of America Patent
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Sep 23, 2008
Grant Date -
Feb 21, 2008
app pub date -
Aug 18, 2006
filing date -
Jul 25, 2006
priority date (Note) -
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Abstract
An integrated circuit (IC) includes a micro control unit (MCU), a one-time programmable (OTP) memory directly connected with the MCU, an electrical charge pump having an output port and an enable port connected to the MCU, and a switching circuit having a control port connected to the MCU, a first input port connected to the output port of the electrical charge pump, a second input port connected to a power source of the MCU, and an output port connected to the OTP memory to provide an operating voltage and a recording voltage for the OTP memory. Because the OTP memory can choose the operating voltage or the recording voltage, a measuring apparatus using this IC doesn't need an external power source to provide a VDD voltage being 5.8 volts. Therefore, a power consuming of the IC can be reduced.
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