This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

一个按键控制设备开机、关机的芯片

请问有通过一个按键控制设备开机、关机的芯片吗。芯片的供电电压能工作的范围是2V-5V,用于手持设备,电池供电的,要是开关机时长可调更好。