About Axcvn.1

Axcvn.1 · 2020-07-16

It is strange because I did not program the chip, the flash should be pure. Also I can't connect to the MCU with ST-LINK. What's wrong with NRST?

Axcvn.1 · 2020-07-16

Documentation really says that pullup resistance on NRST is not required but I decided to leave possibility to solder it. I checked board with external pullup and without, it does not make any changes, MCU is still not working correctly.AN2586 only r...

Axcvn.1 · 2020-07-16

VDD is stable, it has 3.3 V with small pulsations about 5 mV, so it seems that the problem isn't related with power supply. 1V on NRST is not static, but it is not oscillating too. The voltage is floating randomly from 0.4 V to 2 V, but mostly is sta...

Axcvn.1 · 2020-07-16

About 1.5 mA.

Axcvn.1 · 2020-07-16

I checked them repeatedly, there is nothing wrong related with pinout.

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Hello everyone. I have a custom board with STM32F103C8T6. It was made for debugging so it doesn't have any unusal peripherals (only oscillator, filtering capacitors etc.). But there is problem: voltage on NRST pin equals about 1 V.

Re: Hello everyone. I have a custom board with STM32F103C8T6. It was made for debugging so it doesn't have any unusal peripherals (only oscillator, filtering capacitors etc.). But there is problem: voltage on NRST pin equals about 1 V.

Re: Hello everyone. I have a custom board with STM32F103C8T6. It was made for debugging so it doesn't have any unusal peripherals (only oscillator, filtering capacitors etc.). But there is problem: voltage on NRST pin equals about 1 V.

Re: Hello everyone. I have a custom board with STM32F103C8T6. It was made for debugging so it doesn't have any unusal peripherals (only oscillator, filtering capacitors etc.). But there is problem: voltage on NRST pin equals about 1 V.

Re: Hello everyone. I have a custom board with STM32F103C8T6. It was made for debugging so it doesn't have any unusal peripherals (only oscillator, filtering capacitors etc.). But there is problem: voltage on NRST pin equals about 1 V.