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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32L021D4 датащи(PDF) 80 Page - STMicroelectronics |
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STM32L021D4 датащи(HTML) 80 Page - STMicroelectronics |
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80 / 114 page  Electrical characteristics STM32L021x4 80/114 DocID027982 Rev 5 Figure 25. Recommended NRST pin protection 1. The reset network protects the device against parasitic resets. 2. The external capacitor must be placed as close as possible to the device. 3. The user must ensure that the level on the NRST pin can go below the VIL(NRST) max level specified in Table 52. Otherwise the reset will not be taken into account by the device. 6.3.15 12-bit ADC characteristics Unless otherwise specified, the parameters given in Table 53 are values derived from tests performed under ambient temperature, fPCLK frequency and VDDA supply voltage conditions summarized in Table 17: General operating conditions. Note: It is recommended to perform a calibration after each power-up. Table 53. ADC characteristics Symbol Parameter Conditions Min Typ Max Unit VDDA Analog supply voltage for ADC ON Fast channel 1.65 - 3.6 V Standard channels 1.75(1) -3.6 IDDA (ADC) Current consumption of the ADC on VDDA 1.14 Msps - 200 - µA 10 ksps - 40 - Current consumption of the ADC on VDD(2) 1.14 Msps - 70 - 10 ksps - 1 - fADC ADC clock frequency Voltage scaling Range 1 0.14 - 16 MHz Voltage scaling Range 2 0.14 - 8 Voltage scaling Range 3 0.14 - 4 fS(3) Sampling rate - 0.05 - 1.14 MHz fTRIG(3) External trigger frequency fADC = 16 MHz, 16-bit resolution - - 941 kHz -- - 17 1/fADC VAIN Conversion voltage range - 0 - VDDA V RAIN(3) External input impedance See Equation 1 and Table 54 for details -- 50 k Ω RADC(3)(4) Sampling switch resistance - - - 1 k Ω |
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