Open Drain and Push Pull configuration for GPIO

nanayakkaraan · ‎2013-07-09

Posted on July 09, 2013 at 09:28

All,

In STM32 the GPIO output can be configured either PushPull or OpenDrain. Can somebody explain when to use each type? Any references to understand the usage will be appreciated.

Thank you.

-Anuradha

waclawek.jan · ‎2013-07-09

Posted on July 09, 2013 at 11:28

This is a pretty rudimentary question, to be asnwered by reading basic textbook, and not specifically related to STM32.

http://en.wikipedia.org/wiki/Open_collector#Applications_of_open-collector_devices

JW