Tool/software:
Hey,
I am encountering an problem with open drain output. In particular I would like to have 2x NMOS open drain setting with 10kR pull up on the IO4.
What ever I do the open drain output doesn't work, however push pull 1x or 2x works normally on the same pin.
Open drain settings (not working):
Push pull setting (working):
I must be doing something wrong, any ideas as to how to make open drain output to work? It seems open drain doesn't work on any of the pins I tested. I tested with 1x2x or 4x none of the settings work, I tried inverting the signal and also with different pull up values (not that any of those settings should have impact on the operation)
Thanks in advance.
Hi,
Jan let me work with one of my coworkers to see if this is a bug or not. I will get back to you with a response.
Hi Jan,
It doesn't seem like you are doing anything wrong.
We tested this and observed the same results in the 2X Open-drain.
1X open-drain always pulls down, and then 4X open-drain actually works correctly.
Not entirely sure what is happening, we will try to dig deeper into this
I have also tested IO1 and IO2 with 4X open drain, but I need those pins for I2C. If you find a solution with IO4 open drain please let me know.