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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32F301C6 датащи(PDF) 21 Page - STMicroelectronics |
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STM32F301C6 датащи(HTML) 21 Page - STMicroelectronics |
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21 / 141 page  DS9895 Rev 8 21/141 STM32F301x6 STM32F301x8 Functional overview 52 3.11.3 VBAT battery voltage monitoring This embedded hardware feature allows the application to measure the VBAT battery voltage using the internal ADC channel ADC1_IN17. As the VBAT voltage may be higher than VDDA, and thus outside the ADC input range, the VBAT pin is internally connected to a bridge divider by 2. As a consequence, the converted digital value is half the VBAT voltage. 3.12 Digital-to-analog converter (DAC) One 12-bit buffered DAC channel (DAC1_OUT1) can be used to convert digital signals into analog voltage signal outputs. The chosen design structure is composed of integrated resistor strings and an amplifier in inverting configuration. This digital interface supports the following features: • One DAC output channel • 8-bit or 12-bit monotonic output • Left or right data alignment in 12-bit mode • Synchronized update capability • Noise-wave generation • Triangular-wave generation • DMA capability • External triggers for conversion 3.13 Operational amplifier (OPAMP) The STM32F301x6/8 devices embed one operational amplifier with external or internal follower routing and PGA capability (or even amplifier and filter capability with external components). When the operational amplifier is selected, an external ADC channel is used to enable output measurement. The operational amplifier features: • 8.2 MHz bandwidth • 0.5 mA output capability • Rail-to-rail input/output • In PGA mode, the gain can be programmed to be 2, 4, 8 or 16. |
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