I2C pull-up resistor on mitySOM 5CSE-H4-3YA-RI
Added by Pablo Camacho over 4 years ago
Does the mitySOM 5CSE-H4-3YA-RI have built-in pull-up resistors in the I2C pins?
The manual does not mention anything specific to pull-up resistors in the I2C pins.
Thank you for reading.
Replies (3)
RE: I2C pull-up resistor on mitySOM 5CSE-H4-3YA-RI - Added by Alexander Block over 4 years ago
Pablo,
If you are asking about the "I2C1" signals at pins 28 and 30 of the module there are no pull-ups on the module. You would need to place 2.2k pull-ups to 3.3V on your carrier board for those signals if used as I2C.
If those are not the pins in question please comment specifically which module pins you are inquiring about.
Thanks,
Alex
RE: I2C pull-up resistor on mitySOM 5CSE-H4-3YA-RI - Added by Pablo Camacho over 4 years ago
Yes, those are the pins I am talking about. Thanks!
For future reference, do I2C2, I2C3, and I2C0 signals have built-in pull-up resistors?
RE: I2C pull-up resistor on mitySOM 5CSE-H4-3YA-RI - Added by Alexander Block over 4 years ago
I2C0 is used on the module and cannot be used on a carrier board, it does have the necessary pull ups on it.
I2C2 or 3 do not have pull ups installed on the module. Note that I2C2 can only be accessed if routes through the FPGA fabric.
Alex
