Data transmission apparatus for memory and data transmission method thereof

    公开(公告)号:US10170166B1

    公开(公告)日:2019-01-01

    申请号:US15698657

    申请日:2017-09-08

    Abstract: The data transmission apparatus includes a prior stage shift register circuit and a plurality of rear stage shift register circuits. The prior stage shift register circuit is coupled to a sense amplifying device of the memory, receives sensed data from the sense amplifying device and outputs a plurality of the readout data in series by bitwise shifting out the sensed data according to a shift clock signal. The plurality of rear stage shift register circuits are coupled to the prior stage shift register circuit and respectively coupled to a plurality of pads. The plurality of rear stage shift register circuits respectively receive the readout data and respectively bitwise transport the readout data to the pads according to a clock signal. Wherein, a frequency of the shift clock signal is less than a frequency of the clock signal.

    Sense amplifier circuit with reference voltage holding circuit for maintaining sense amplifier reference voltage when the sense amplifier operates under standby mode

    公开(公告)号:US10978111B1

    公开(公告)日:2021-04-13

    申请号:US16705147

    申请日:2019-12-05

    Abstract: In an aspect of the disclosure, a reference voltage holding circuit is provided. The reference voltage holding circuit is for maintaining a sense amplifier reference voltage provided by a sense amplifier reference circuit, and the reference voltage holding circuit includes: a reference voltage generating circuit configured to provide a bias reference voltage; a current generating circuit electrically coupled to the reference voltage generating circuit and configured to receive the bias reference voltage to output a standby bias voltage and a standby bias current; and a voltage pull-up circuit electrically coupled to the current mirror circuit and configured to provide for the standby bias current and to maintain the standby bias voltage which drives the sense amplifier reference voltage when reference voltage holding circuit operates under a standby operation and approximates the sense amplifier reference voltage as long as the sense amplifier reference voltage remains enabled.

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