IO on the CYPD5225

[td83]

Hello,

I have connected a device on the I2C bus of the CYPD5225.

But this device has not the same power rail (it is 3V3 but not set at the same time) than the CYPD5225. I was wondering at witch supply do i need to connect the pull-up ?

Question: Do the SCB pins are 3V3 tolerant if the CYPD5225 is not powered ?

Thank you for help

Best regards,

TD83

[ShifangZ_26 · Accepted solution]

CCG5 SCB pins is following VDDIO.  To be safe, Kindly make sure the IO is powered later than VDDIO. 

Best Regards,

Lisa