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    • 81. 发明授权
    • Power-supply voltage fluctuation inhibiting circuit
    • 电源电压波动抑制电路
    • US06252384B1
    • 2001-06-26
    • US09544919
    • 2000-04-07
    • Satoshi AraiHirokazu Tohya
    • Satoshi AraiHirokazu Tohya
    • G05F156
    • G06F1/305G06F1/28
    • Disclosed are a circuit and method for inhibiting a fluctuation in power-supply terminal voltage of a CPU caused by a change in working current of the CPU, which is connected to a DC power supply. The circuit includes a CPU controlled between a sleep state and an operating state by the value of a stop-clock signal applied thereto from a stop-clock terminal; a transistor inserted in parallel with the CPU across power-supply terminals thereof; and a control circuit for controlling the flow of current into the transistor in dependence upon a change in the power-supply current of the CPU caused by a change in the stop-clock signal, thereby inhibiting a fluctuation in voltage across the power-supply terminals of the CPU.
    • 公开了一种用于抑制由连接到直流电源的CPU的工作电流变化引起的CPU的电源端子电压波动的电路和方法。 电路包括通过从停止时钟端子施加到其的停止时钟信号的值在睡眠状态和操作状态之间控制的CPU; 晶体管在其电源端子上与CPU并联插入; 以及控制电路,用于根据由停止时钟信号的变化引起的CPU的电源电流的变化来控制进入晶体管的电流流动,由此抑制电源端子的电压波动 的CPU。