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STM32L4 without Crystal for CAN, I2C and SPI

Question asked by bleymueller.willem on Nov 15, 2016
Latest reply on Dec 10, 2016 by shingadaddy
Hello everyone,

I am planing a few Sensors and remote switches which communicate using the CAN Bus. I'd like to use the STM32L433CC MCU because of its easy solderability by hand for prototyping. The boards should be low power, a CPU Frequency of 26 MHz is probably sufficient for the tasks.

My question is now, will the CPU work without external clock source when using CAN, I2C and SPI only? So is the internal RC oscillator enough for such tasks?

Thanks, Willem

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