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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32F302X6 датащи(PDF) 92 Page - STMicroelectronics |
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STM32F302X6 датащи(HTML) 92 Page - STMicroelectronics |
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92 / 139 page  Electrical characteristics STM32F302x6 STM32F302x8 92/139 DS9896 Rev 8 Figure 24. Recommended NRST pin protection 1. The reset network protects the device against parasitic resets. 0.1 uF capacitor must be placed as close as possible to the chip. 2. The user must ensure that the level on the NRST pin can go below the VIL(NRST) max level specified in Table 56. Otherwise the reset is not taken into account by the device. 3. The user must place the external capacitor on NRST as close as possible to the chip. 6.3.16 Timer characteristics The parameters given in Table 57 are guaranteed by design. Refer to Section 6.3.14: I/O port characteristics for details on the input/output alternate function characteristics (output compare, input capture, external clock, PWM output). MS19878V4 RPU VDD Internal reset External reset circuit (1) NRST (2) Filter 0.1 μF (3) Table 57. TIMx(1)(2) characteristics 1. TIMx is used as a general term to refer to the TIM1, TIM2, TIM15, TIM16 and TIM17 timers. 2. Guaranteed by design. Symbol Parameter Conditions Min Max Unit tres(TIM) Timer resolution time -1 - tTIMxCLK fTIMxCLK = 72 MHz 13.9 - ns fTIMxCLK = 144 MHz, x = 1, 15,16, 17 6.95 - ns fEXT Timer external clock frequency on CH1 to CH4 -0 fTIMxCLK/2 MHz fTIMxCLK = 72 MHz 0 36 MHz ResTIM Timer resolution TIMx (except TIM2) - 16 bit TIM2 - 32 tCOUNTER 16-bit counter clock period - 1 65536 tTIMxCLK fTIMxCLK = 72 MHz 0.0139 910 µs fTIMxCLK = 144 MHz, x= 1/15/16/17 0.0069 455 µs tMAX_COUNT Maximum possible count with 32-bit counter - - 65536 × 65536 tTIMxCLK fTIMxCLK = 72 MHz - 59.65 s fTIMxCLK = 144 MHz, x= 1/15/16/17 - 29.825 s |
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