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设计了一种新型低功耗上电复位电路。该电路采用一种低功耗施密特触发器,整体电路静态工作电流极低,复位脉冲出现时间和脉冲宽度可调。电路基于40nm CMOS工艺,在1.1V电源电压下进行Cadence仿真。结果表明,新型上电复位电路静态电流为63nA,在电源缓慢上电、高电源纹波和快速掉电/上电等情况下,电路均具有很高的可靠性。
A new low power consumption reset circuit is designed. The circuit uses a low-power Schmitt trigger, the overall circuit operating current is very low static, reset pulse timing and pulse width can be adjusted. The circuit is based on a 40nm CMOS process and is Cadence emulated at a 1.1V supply voltage. The results show that the new quiescent current of the power-on reset circuit is 63nA, and the circuit has high reliability under the conditions of slow power-on, high power supply ripple and rapid power-down / power-on.