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STM32F051K4 数据表(PDF) 83 Page - STMicroelectronics |
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STM32F051K4 数据表(HTML) 83 Page - STMicroelectronics |
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83 / 104 page  Electrical characteristics STM32F051x 84/105 Doc ID 022265 Rev 3 6.3.18 Temperature sensor characteristics 6.3.19 VBAT monitoring characteristics 6.3.20 Timer characteristics The parameters given in Table 61 are guaranteed by design. Refer to Section 6.3.13: I/O port characteristics for details on the input/output alternate function characteristics (output compare, input capture, external clock, PWM output). Table 59. TS characteristics Symbol Parameter Min Typ Max Unit TL (1) 1. Guaranteed by design, not tested in production. VSENSE linearity with temperature - ±1 ±2°C Avg_Slope(1) Average slope 4.0 4.3 4.6 mV/°C V25 Voltage at 25 °C 1.34 1.43 1.52 V tSTART (1) Startup time 4 - 10 µs TS_temp (1)(2) 2. Shortest sampling time can be determined in the application by multiple iterations. ADC sampling time when reading the temperature 17.1 - - µs Table 60. VBAT monitoring characteristics Symbol Parameter Min Typ Max Unit R Resistor bridge for VBAT -50- K Ω Q Ratio on VBAT measurement - 2 - Er(1) 1. Guaranteed by design, not tested in production. Error on Q –1 - +1 % TS_vbat (1)(2) 2. Shortest sampling time can be determined in the application by multiple iterations. ADC sampling time when reading the VBAT 1mV accuracy 5- - µs Table 61. TIMx(1) characteristics Symbol Parameter Conditions Min Max Unit tres(TIM) Timer resolution time 1- tTIMxCLK fTIMxCLK = 48 MHz 20.8 - ns fEXT Timer external clock frequency on CH1 to CH4 0 fTIMxCLK/2 MHz fTIMxCLK = 48 MHz 0 24 MHz ResTIM Timer resolution TIMx (except TIM2) - 16 bit TIM2 - 32 |
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