About cWagh.1

cWagh.1 · 2022-02-22

As shown in above figure.The EXT/GPIO pin directly connected to MCU with pull up resistor (10K).So once the switch press the PMOSFET start switching supply to MCU.Please let me know the effect of voltage on EXT/GPIO pin without suppling power to MCU.

cWagh.1 · 2022-02-23

Thanks for reply.MCU-STM32L073CZT6 and Pin No 25-FT type. VDD-3.3V.As the EXT/GPIO pin having voltage 3.3V continuously without supplying power(MCU_VDD) to MCU.Just I wanted to know, this may be lead to damage the pin of MCU or this may be causes any...

User statistics

User Activity

Effect of pull up without supplying power to MCU

Re: Effect of pull up without supplying power to MCU