METHOD AND DEVICE FOR CORRECTING AND OBTAINING REFERENCE VOLTAGE

摘要

The present invention discloses a method for adjusting a reference voltage, including: decoding a default code configured in a reference voltage register in a chip to obtain an actual reference voltage; comparing the actual reference voltage with a benchmark value to obtain a deviation value between the two; configuring an adjustment code according to the deviation value; and, burning the adjustment code into a nonvolatile storage medium. The present invention also discloses an apparatus for adjusting a reference voltage. According to the method and apparatus for adjusting a reference voltage provided by embodiments of the present invention, the reference voltage need not be adjusted according to an external power supply's different application schemes. Thus, adjustment on the reference voltage of the chip is standardized and costs of the chip's application schemes are saved. Embodiments of the present invention further provide a method and apparatus for obtaining a reference voltage, which makes it not necessary to configure a dedicated reference voltage pin in the chip for introducing an external reference voltage, and thus stability of the circuit's working is improved and costs of the chip's applications are decreased.