G473 - PA10 I2C. Docs issue?

Forum|Forum|3 years ago
February 8, 2023
4 replies
2163 views

I have been troubleshooting a I2C device for longer than I'd like to admit. Today I attempted to configure with CUBE, and I think I've found the pin I'm using may not be compatible.

PA10. Can it be used for SDA2? I thought it could based on the AF table in the UM. Cube shows it cannot. The UM table where it lists the AFs all together (Above the one that breaks down by AF) also does not show PA10 is capable of SDA2.

I think this is probably a User Manual error. Can anyone confirm? Thank you. Of note, I've used this periph on a diff board that uses H7, and I've gotten it to work on I2C1 on G473.

This topic has been closed for replies.

Best answer by waclawek.jan

Indeed, this is a know issue for two years, and ST still did not update the DS... what a shame.

https://community.st.com/s/question/0D53W00000Yv4k1SAB/stm32g473-i2c2-pinout-mistake-in-datasheet

https://community.st.com/s/question/0D53W00001ddOcYSAU/hithers-stm32g473ce-datasheet-errorin-ds12712-rev-4-and-some-other-g4-datasheets-pa10s-af4-is-showen-as-i2c2sda-in-the-af-table-but-in-the-port-af-lisst-its-i2c2smba-cube-also-just-shows-i2c2smbaand-it-is-smba-not-sda

JW

@KDJEM.1

@Amel NASRI

DOCon.1Author

Senior

Related piece of the puzzle: I think PA8 may be the intended (and implemented in hardware) SDA2 pin. It shows as SMBA on the second DS table. I'm not lion!