About ABeus.1

ABeus.1 · 2022-07-13

How can the variation between chips be explained, HW/SW being identical?

ABeus.1 · 2022-07-13

10 test systems here with STM32L451RCT6 and identical HW/SW.One of the 10 produces the problem quite often. Not observed on the 9 others.Once it appears, it reappears at every following startup.I noticed that after power down there is a residual VDD ...

User statistics

User Activity

Re: We get a constant square wave on USART2_TX (PA2) on some of our STM32L451CEU6TR products. This seems to happen sometimes after a power cycle (brown-out). The square wave is a around 32kHz.

Re: We get a constant square wave on USART2_TX (PA2) on some of our STM32L451CEU6TR products. This seems to happen sometimes after a power cycle (brown-out). The square wave is a around 32kHz.