Mity CPU Platforms » MitySOM-5CSX Altera Cyclone V

07/28/2020

AB 11:28 PM PCB Development: RE: I2C pull-up resistor on mitySOM 5CSE-H4-3YA-RI

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... Alexander Block

PC 11:09 PM PCB Development: RE: I2C pull-up resistor on mitySOM 5CSE-H4-3YA-RI

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? Pablo Camacho

AB 10:17 PM PCB Development: RE: I2C pull-up resistor on mitySOM 5CSE-H4-3YA-RI

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 a... Alexander Block

PC 09:38 PM PCB Development: I2C pull-up resistor on mitySOM 5CSE-H4-3YA-RI

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. Pablo Camacho