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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32F070RB датащи(PDF) 61 Page - STMicroelectronics |
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STM32F070RB датащи(HTML) 61 Page - STMicroelectronics |
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61 / 83 page  DocID027114 Rev 3 61/83 STM32F070CB/RB/C6/F6 Electrical characteristics 69 Figure 18. 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 48: 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 49 are preliminary values derived from tests performed under ambient temperature, fPCLK frequency and VDDA supply voltage conditions summarized in Table 20: General operating conditions. Note: It is recommended to perform a calibration after each power-up. Table 49. 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) VDD = VDDA = 3.3 V - 0.9 - mA fADC ADC clock frequency - 0.6 - 14 MHz fS(2) Sampling rate - 0.05 - 1 MHz fTRIG(2) External trigger frequency fADC = 14 MHz - - 823 kHz -- - 17 1/fADC VAIN Conversion voltage range - 0 - VDDA V RAIN(2) External input impedance See Equation 1 and Table 50 for details -- 50 k Ω RADC(2) Sampling switch resistance -- - 1 k Ω CADC(2) Internal sample and hold capacitor -- - 8 pF |
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