Tool/software:
Hi,
I have a further question regarding your previous answer.
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Previous Question
2) The default values of the above 0x26 and 0x27 registers are 0x83=131 and 0x84=132, respectively.
When calculated from this, the SCL frequency is about 76kHz, but the actual measured value was 66kHz. Why is there a difference?
Ans.
SCL/I2C rate is based on the internal always on clock within the device, which can have up to 10-20% deviation. This is why there is a delta between the 76kHz and 66kHz.
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If there are almost no changes in the environment during operation, can we assume that the 10-20% error is constant (like a initial offset error)?
Customer is concerned that a slight change in the environment (e.g. a 5 degree rise in temperature) could cause this SCL variation to change even more significantly during operation.
Any advice, even a guess, would be appreciated.
Best regards,
Hiroshi
Best regards,
Hiroshi
