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How to make standby mode pin stay low

YBAYR.1
Associate III

I am using stm32f302r8t6 microcontroller. In standby mode, the pins on port A are high, which should not be the case for the card I designed. For the stm32f302r8t6 microcontroller, I should keep one pin on port A low in standby mode.

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Accepted Solutions
TDK
Guru

In standby mode, almost all pins are high impedance. You need an external resistor to give the pin a defined state when in standby mode.

TDK_0-1698167019937.png

If it's the WKUP pin, you can configure it to have a pulldown.

 

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4 REPLIES 4
TDK
Guru

In standby mode, almost all pins are high impedance. You need an external resistor to give the pin a defined state when in standby mode.

TDK_0-1698167019937.png

If it's the WKUP pin, you can configure it to have a pulldown.

 

If you feel a post has answered your question, please click "Accept as Solution".
YBAYR.1
Associate III

Is there any way I can keep the a11 and a12 pin low? without making any hardware changes

for microcontroller stm32f302r8t6 


Thank you for your answer..

They aren't WKUP pins, so no.

If you feel a post has answered your question, please click "Accept as Solution".
YBAYR.1
Associate III

Yes, it is not wake up, I control the m0 and m1 pins of my Lora module.