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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32F071C8U6 датащи(PDF) 82 Page - STMicroelectronics |
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STM32F071C8U6 датащи(HTML) 82 Page - STMicroelectronics |
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82 / 121 page  Electrical characteristics STM32F071CB STM32F071RB STM32F071VB STM32F071V8 82/121 DocID025451 Rev 3 Figure 24. 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 55: 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 56 are derived from tests performed under the conditions summarized in Table 23: General operating conditions. Note: It is recommended to perform a calibration after each power-up. Vhys(NRST) NRST Schmitt trigger voltage hysteresis -- 200 - mV RPU Weak pull-up equivalent resistor(2) VIN = VSS 25 40 55 k Ω VF(NRST) NRST input filtered pulse - - - 100(1) ns VNF(NRST) NRST input not filtered pulse 2.7 < VDD < 3.6 300(3) -- ns 2.0 < VDD < 3.6 500(3) -- 1. Data based on design simulation only. Not tested in production. 2. The pull-up is designed with a true resistance in series with a switchable PMOS. This PMOS contribution to the series resistance is minimal (~10% order). 3. Data based on design simulation only. Not tested in production. Table 55. NRST pin characteristics (continued) Symbol Parameter Conditions Min Typ Max Unit Table 56. 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 |
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