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stm32f303 adc not working with 18msps

armindavatgaran
Associate III

‎2017-01-30 05:49 AM

Posted on January 30, 2017 at 14:49

Hello

I tested stm32cubef3 (rev 1.6&1.7) ADC_DualMode_18Msps example with stm32f3 discovery board, i applied a 100KHz pwm wave to pc1, captured 32768 samples and calculated conversion rate by counting the number of pwm peaks.

The calculation shows ~12msps conversion rate, i repeated this experiment with different cpu frequencies, the results are similar. what is the problem?

Thanks.

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