STM32C0116-DK has I2C pinout discrepancy

Karl Yamashita · ‎2024-09-30

I am currently ordering the STM32C0116-DK to start developing some FW before getting the shipment. I've also sent the pinout to the EE team so they can start the schematic and laying out the PCB

I started the project using the Board Selector. I've set up the UART and I2C which the pinout is shown below. The I2C peripheral is using PA9 and PA10

However, when I set up a new project using the MCU selector, the I2C peripheral are on other pins. I am selecting the same MCU where it shows the STM32C0116-DK as the development board to use.

But when I set up the I2C peripheral, it uses PB7 and PC14

I thought I could maybe remap the pins but there is no option for I2C on PA12 pin as shown below.

So which pinout is correct? Or are they actually 2 different MCU's?

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TDK · ‎2024-09-30

Same chip. In the SYS tab, remap the pins to PA9/PA10. After that, you can select the I2C1 functions for the pins.

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TDK · ‎2024-09-30

Same chip. In the SYS tab, remap the pins to PA9/PA10. After that, you can select the I2C1 functions for the pins.

If you feel a post has answered your question, please click "Accept as Solution".

Karl Yamashita · ‎2024-09-30

Ahh! That's the first time seeing swapping pins using check box. Or maybe I've just never noticed.

Thanks TDK!

If smoke escapes your device, put the smoke back in. It'll still work as a conversation piece. If you find my answers useful, click the Accept as Solution button so that way others can see the solution.