1.低功耗模式类型
功耗由高到低:
sleep mode:
进入:CPU时钟停止,外设工作,IO保持
唤醒:唤醒耗时最少
可由中断和外部事件唤醒
stop mode:
进入:所有时钟停止,寄存器及SRAM内容保持,IO保持。
唤醒:HSI作为系统始终
可由中断和外部事件唤醒
standby mode:
进入:1.8V电源关断
唤醒:除Power control/status register (PWR_CSR),其它寄存器均复位。
WKUP pin rising edge, RTC alarm event’s rising edge, external Reset in
NRST pin, IWDG Reset.
I/O states in Standby mode
In Standby mode, all I/O pins are high impedance except:
? Reset pad (still available)
? PC13, PC14 and PC15 if configured by RTC or LSE
? WKUPx pins
时间: 2024-11-10 14:57:25