DS90UB953-Q1: I2C frequency error

Jimmy Gong

Hi team,

If we set DS90UB953's I2C frequency to 400kHz. Does its SCL have frequency error? If yes, how much difference will it be(% or ppm)?

BR,

Jimmy

over 2 years ago

+1 Casey McCrea over 2 years ago

TI__Guru** 103215 points

Jimmy,

The I2C clock inside 953 when working in controller mode is based on an internal 25MHz oscillator with a +/-5% tolerance. So with 400kHz nominal register settings, the I2C speed can range from 380-420kHz

Best Regards,

Casey

0 Jimmy Gong over 2 years ago in reply to Casey McCrea

TI__Expert 3600 points

Grateful for your support Casey.

BR,

Jimmy

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DS90UB953-Q1: I2C frequency error