1. STM32F10x ADC features
12-bit successive approximation analog-to-digital converter.
Up to 3 ADC controllers
Supports up to 18 channels and can measure up to 16 external and 2 internal signal sources.
Support single and continuous conversion modes
Interrupts are generated at the end of conversion, end of injected conversion, and on simulated watchdog events.
Automatic scanning mode from channel 0 to channel n
Automatic calibration
Sampling interval can be programmed per channel
External trigger options for both regular and injected channels
The conversion result can be stored in 16-bit data register in left-aligned or right-aligned mode
ADC conversion time: Maximum conversion rate 1us. (The maximum conversion speed is 1MHz, obtained when ADCCLK=14M and the sampling period is 1.5 ADC clocks.)
ADC power supply requirement: 2.4V-3.6V
ADC input range: VREF- ≤ VIN ≤ VREF+
2. Do not let the ADC clock exceed 14MHz, otherwise it may be inaccurate.
3. Minimum sampling time 1us (ADC clock = 14MHz, sampling period is 1.5 cycles).
For example: When ADCLK = 14MHz, the sampling time is 1.5 cycles
Tconv = 1.5 + 12.5 = 14 cycles = 1us
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