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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32F413XG датащи(PDF) 151 Page - STMicroelectronics |
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STM32F413XG датащи(HTML) 151 Page - STMicroelectronics |
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151 / 207 page  DocID029162 Rev 2 151/207 STM32F413xG/H Electrical characteristics 174 6.3.22 VBAT monitoring characteristics 6.3.23 Embedded reference voltage The parameters given in Table 83 are derived from tests performed under ambient temperature and VDD supply voltage conditions summarized in Table 16. Table 82. VBAT monitoring characteristics Symbol Parameter Min Typ Max Unit R Resistor bridge for VBAT -50- K Ω Q Ratio on VBAT measurement - 4 - Er(1) Error on Q –1 - +1 % TS_vbat(2)(2) ADC sampling time when reading the VBAT 1 mV accuracy 5- - µs 1. Guaranteed by design. 2. Shortest sampling time can be determined in the application by multiple iterations. Table 83. Embedded internal reference voltage Symbol Parameter Conditions Min Typ Max Unit VREFINT Internal reference voltage –40 °C < TA < +125 °C 1.18 1.21 1.24 V TS_vrefint(1) ADC sampling time when reading the internal reference voltage -10 - - µs VRERINT_s(2) Internal reference voltage spread over the temperature range VDD = 3V ± 10mV - 3 5 mV TCoeff(2) Temperature coefficient - - 30 50 ppm/°C tSTART(2) Startup time - - 6 10 µs 1. Shortest sampling time can be determined in the application by multiple iterations. 2. Guaranteed by design Table 84. Internal reference voltage calibration values Symbol Parameter Memory address VREFIN_CAL Raw data acquired at temperature of 30 °C VDDA = 3.3 V 0x1FFF 7A2A - 0x1FFF 7A2B |
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