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Do GPIO pins maintain their state when the STM32F4xx goes into STOP mode?

Dennis Jackson
Associate
Posted on January 30, 2017 at 19:38

The reference manual, RM 00090, does not explicitly stay what happens to the GPIO lines when STOP mode is entered.  If a pin is high, does it stay high?

#stop-mode #gpio
1 ACCEPTED SOLUTION

Accepted Solutions
Posted on January 30, 2017 at 21:50

RM0090, rev.13, p.122:

In Stop mode: the main regulator or low-power regulator supplies a low-power voltage to the 1.2V domain, thus preserving the content of registers and internal SRAM.

GPIO are no different from other peripherals.

JW

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1 REPLY 1
Posted on January 30, 2017 at 21:50

RM0090, rev.13, p.122:

In Stop mode: the main regulator or low-power regulator supplies a low-power voltage to the 1.2V domain, thus preserving the content of registers and internal SRAM.

GPIO are no different from other peripherals.

JW