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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32F071C8 датащи(PDF) 82 Page - STMicroelectronics |
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STM32F071C8 датащи(HTML) 82 Page - STMicroelectronics |
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82 / 122 page  Electrical characteristics STM32F071x8 STM32F071xB 82/122 DS10009 Rev 7 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 56: 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 57 are derived from tests performed under the conditions summarized in Table 24: 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 kΩ 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 56. NRST pin characteristics (continued) Symbol Parameter Conditions Min Typ Max Unit MS19878V3 RPU VDD Internal reset External reset circuit (1) NRST (2) Filter 0.1 μF Table 57. 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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