Schematic Question
Posted: Mon Feb 21, 2022 5:54 pm
Hi All
After looking at a lot of open source projects using the STM32F405 i have found that most of them seem to be an exact copy (in schematic) of each other, but all with slightly different board designs / layouts.
One thing that im confused on is why most of these, including the sparkfun Things Plus- https://cdn.sparkfun.com/assets/7/7/2/1 ... g_Plus.pdf
and the Adafruit Feather - https://cdn-shop.adafruit.com/product-f ... ematic.pdf
Have the PA9 / UART1_TX and PA10 / UART1_RX tied to VCC or the 3.3v supply voltage? What is the meaning of them doing this?
After looking at a lot of open source projects using the STM32F405 i have found that most of them seem to be an exact copy (in schematic) of each other, but all with slightly different board designs / layouts.
One thing that im confused on is why most of these, including the sparkfun Things Plus- https://cdn.sparkfun.com/assets/7/7/2/1 ... g_Plus.pdf
and the Adafruit Feather - https://cdn-shop.adafruit.com/product-f ... ematic.pdf
Have the PA9 / UART1_TX and PA10 / UART1_RX tied to VCC or the 3.3v supply voltage? What is the meaning of them doing this?