Electronic system device and method of starting the same

    公开(公告)号:US11604484B2

    公开(公告)日:2023-03-14

    申请号:US17068476

    申请日:2020-10-12

    Abstract: An electronic system device comprises a power generation device generating a power supply voltage, a substrate bias generation circuit connected to the power generation device, a memory circuit, a monitor circuit, and a capacitor connected to the substrate bias generation circuit via a switch. The substrate bias generation circuit generates a substrate bias voltage from the power supply voltage and supplies charges based on the substrate bias voltage to the capacitor while the switch is ON-state. While the switch is OFF-state, the capacitor stores the accumulated charges based on the substrate bias voltage. While the switch is ON-state, the substrate bias generation circuit adds based on the substrate bias voltage to charge that was held, and states the back bias voltage. The substrate bias generation circuit supplies the back bias voltage to memory circuit.

    Semiconductor device
    4.
    发明授权

    公开(公告)号:US10854609B2

    公开(公告)日:2020-12-01

    申请号:US16005825

    申请日:2018-06-12

    Inventor: Akira Tanabe

    Abstract: Wells formed in a semiconductor device can be discharged faster in a transition from a stand-by state to an active state. The semiconductor device includes an n-type well applied, in an active state, with a power supply voltage and, in a stand-by state, with a voltage higher than the power supply voltage, a p-type well applied, in the active state, with a ground voltage and, in the stand-by state, with a voltage lower than the ground voltage, and a path which, in a transition from the stand-by state to the active state, electrically couples the n-type well and the p-type well.

    Semiconductor device
    9.
    发明授权

    公开(公告)号:US10447257B2

    公开(公告)日:2019-10-15

    申请号:US16414846

    申请日:2019-05-17

    Inventor: Akira Tanabe

    Abstract: Related-art back bias generation circuits cause a problem where a long time is required for transition between an operating state and a standby state because driving power is lowered to reduce the power consumption in the standby state. A back bias generation circuit outputs a predetermined voltage. The predetermined voltage is the back bias voltage of a substrate in a standby mode. A bias control circuit stores an electrical charge while a circuit block is in an operating mode, supplies the stored electrical charge to the substrate of a MOSFET included in the circuit block when the circuit block transitions from the operating mode to the standby mode, and subsequently supplies the output of the back bias generation circuit to the substrate of the MOSFET.

    Semiconductor device
    10.
    发明授权

    公开(公告)号:US10340905B2

    公开(公告)日:2019-07-02

    申请号:US15663728

    申请日:2017-07-29

    Inventor: Akira Tanabe

    Abstract: Related-art back bias generation circuits cause a problem where a long time is required for transition between an operating state and a standby state because driving power is lowered to reduce the power consumption in the standby state. A back bias generation circuit outputs a predetermined voltage. The predetermined voltage is the back bias voltage of a substrate in a standby mode. A bias control circuit stores an electrical charge while a circuit block is in an operating mode, supplies the stored electrical charge to the substrate of a MOSFET included in the circuit block when the circuit block transitions from the operating mode to the standby mode, and subsequently supplies the output of the back bias generation circuit to the substrate of the MOSFET.

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