IAS VOLTAGE GENERATOR FOR REFERENCE CELL AND BIAS VOLTAGE PROVIDING METHOD THEREFOR

摘要

A bias voltage generator and generating method for a reference cell are provided. The bias voltage generator includes a data read detector, a cut-off signal generator and an output stage circuit. The data read detector generates a detection signal according to transition points of a sense amplifier enable signal and a sense amplifier latch signal. The cut-off signal generator delays the detection signal a delay time to generate a cut-off signal, wherein a start-up time of the cut-off signal is decided by the detection signal and the delay time. The output stage circuit starts or stops to provide a bias-voltage providing signal according to the cut-off signal.

主权项

1. A bias voltage generator for a reference cell, adapted to a serial interface flash memory, comprising:
a data read detector, receiving a sense amplifier enable signal and a sense amplifier latch signal and generating a detection signal according to transition points of the sense amplifier enable signal and the sense amplifier latch signal; a cut-off signal generator, coupled with the data read detector, receiving and delaying the detection signal for a time delay to generate a cut-off signal, wherein a start-up time of the cut-off signal is decided according to the time delay; and an output stage circuit, coupled with the cut-off signal generator and stopping generating a bias-voltage providing signal according to a trigger of the cut-off signal.