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MSI with LSE auto calibration accuracy

Steffen Rose
Associate III

Has the MSI with LSE auto calibration a sufficient precision for the 1Mbit CAN bitrate?

What is the accuracy compared with a crystal PLL clock?

2 REPLIES 2

ST states that MSI with LSE autocalibration is good as a FS USB clock. USB standard requires FS signaling to have timing error less than 0.25%. Is this sufficient for 1Mbit CAN bitrate?

JW

Example calculations say 0.5% for 1Mbit/s, but it's depend of the specific environment.

Thank you.