About Danilotto Runi

Danilotto Runi · 2018-04-10

Posted on April 10, 2018 at 17:58Hi all,Checking a schematic of an RX485 transceiver connected to STM32F401 UART, I got into this detail that captured my attention:The RX line is directly connected to the RX pin of UART1 of the the MCU and it is pul...

Danilotto Runi · 2018-04-12

Posted on April 12, 2018 at 11:38Reasonably it will be shorter, but, despite very rare, there are few possibilities that it will exceed 100M. I have to take into account this case.Thank you TJ for your support.

Danilotto Runi · 2018-04-11

Posted on April 11, 2018 at 16:36Hello!Reading the datasheet High thresold is 2V for D, DE and REBut for R the thresold is 4.6VI think the solution could be switching the transceiver to a 3.3V rated part. But I would like to keep this for commonalit...

Danilotto Runi · 2018-04-10

Posted on April 10, 2018 at 23:21I back again because I think there is a kind of bug in the CubeMX configurator. The MCU is an STM32F401. If I go into the pin configuration tag, it addresses the RX pin like an output. I tried to configure an STM32F1...

Danilotto Runi · 2018-04-10

Posted on April 10, 2018 at 21:37Hello Clive!Thank you for your prompt support, as usual. Got the point. Thinking about it, it is obvious that on the rx line, being an input, PP vs OD has no point!!

Danilotto Runi · 2018-03-14

Posted on March 14, 2018 at 14:06I was reading today an ST document about hardware design and I got into this:What about using a MEMS oscillator like thishttp://www.abracon.com/Oscillators/ASTMKJ.pdf to get rid of the crystal circuit tuning mess? Di...

User statistics

User Activity

STM32F401 UART pull up to 5V on RX

Re: STM32F401 UART pull up to 5V on RX

Re: STM32F401 UART pull up to 5V on RX

Re: STM32F401 UART pull up to 5V on RX

Re: STM32F401 UART pull up to 5V on RX

Re: STM32L4 low RTC precision