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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32F031X4 датащи(PDF) 70 Page - STMicroelectronics |
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STM32F031X4 датащи(HTML) 70 Page - STMicroelectronics |
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70 / 106 page  Electrical characteristics STM32F031x4 STM32F031x6 70/106 DocID025743 Rev 4 Figure 23. Recommended NRST pin protection 1. The external capacitor protects the device against parasitic resets. 2. The user must ensure that the level on the NRST pin can go below the VIL(NRST) max level specified in Table 49: NRST pin characteristics. Otherwise the reset will not be taken into account by the device. 6.3.16 12-bit ADC characteristics Unless otherwise specified, the parameters given in Table 50 are derived from tests performed under the conditions summarized in Table 18: General operating conditions. Note: It is recommended to perform a calibration after each power-up. Table 50. ADC characteristics Symbol Parameter Conditions Min Typ Max Unit VDDA Analog supply voltage for ADC ON - 2.4 - 3.6 V IDDA (ADC) Current consumption of the ADC(1) VDDA = 3.3 V - 0.9 - mA fADC ADC clock frequency - 0.6 - 14 MHz fS(2) Sampling rate 12-bit resolution 0.043 - 1 MHz fTRIG(2) External trigger frequency fADC = 14 MHz, 12-bit resolution -- 823 kHz 12-bit resolution - - 17 1/fADC VAIN Conversion voltage range - 0 - VDDA V RAIN(2) External input impedance See Equation 1 and Table 51 for details -- 50 k Ω RADC(2) Sampling switch resistance -- - 1 k Ω CADC(2) Internal sample and hold capacitor -- - 8 pF tCAL(2)(3) Calibration time fADC = 14 MHz 5.9 µs -83 1/fADC |
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