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STM32F038X6 Datasheet(PDF) 69 Page - STMicroelectronics |
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STM32F038X6 Datasheet(HTML) 69 Page - STMicroelectronics |
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69 / 102 page  DocID026079 Rev 5 69/102 STM32F038x6 Electrical characteristics 79 6.3.15 12-bit ADC characteristics Unless otherwise specified, the parameters given in Table 49 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 48. NPOR pin characteristics Symbol Parameter Conditions Min Typ Max Unit VIL(NPOR) NPOR Input low level voltage - - - 0.475 VDDA - 0.2(1) V VIH(NPOR) NPOR Input high level voltage -0.5 VDDA + 0.2(1) -- Vhys(NPOR) NPOR Schmitt trigger voltage hysteresis -- 100(1) -mV RPU Weak pull-up equivalent resistor(2) VIN = VSS 25 40 55 k Ω 1. Guaranteed by design, 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). 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) 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 50 for details -- 50 kΩ RADC(2) Sampling switch resistance -- - 1 kΩ 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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