GPIO pin toggle speed?

[michael2]

Posted on June 03, 2013 at 13:36

Anyone know the fastest possible frequency that any GPIO pin state can be toggled?

[waclawek.jan]

Posted on June 03, 2013 at 14:02

https://my.st.com/public/STe2ecommunities/mcu/Lists/cortex_mx_stm32/Flat.aspx?RootFolder=https%3a%2f%2fmy.st.com%2fpublic%2fSTe2ecommunities%2fmcu%2fLists%2fcortex_mx_stm32%2fMCU%20running%20too%20slow&FolderCTID=0x01200200770978C69A1141439FE559EB459D7580009C4E14902C3CDE46A77F0FFD06506F5B&currentvie...

[Tesla DeLorean]

Posted on June 03, 2013 at 14:05

You can generate a signal that approaches 84 MHz on an STM32F4 @ 168 MHz, so one cycle for high, one for low

https://my.st.com/public/STe2ecommunities/mcu/Lists/cortex_mx_stm32/Flat.aspx?RootFolder=https://my.st.com/public/STe2ecommunities/mcu/Lists/cortex_mx_stm32/MCU%20running%20too%20slow&FolderCTID=0x01200200770978C69A1141439FE559EB459D7580009C4E14902C3CDE46A77F0FFD06506F5B&currentviews=171