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STM32F217VG 数据表(PDF) 107 Page - STMicroelectronics |
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STM32F217VG 数据表(HTML) 107 Page - STMicroelectronics |
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107 / 175 page  DocID17050 Rev 9 107/175 STM32F21xxx Electrical characteristics 174 6.3.18 TIM timer characteristics The parameters given in Table 49 and Table 50 are guaranteed by design. Refer to Section 6.3.16: I/O port characteristics for details on the input/output alternate function characteristics (output compare, input capture, external clock, PWM output). Table 49. Characteristics of TIMx connected to the APB1 domain(1) 1. TIMx is used as a general term to refer to the TIM2, TIM3, TIM4, TIM5, TIM6, TIM7, and TIM12 timers. Symbol Parameter Conditions Min Max Unit tres(TIM) Timer resolution time AHB/APB1 prescaler distinct from 1, fTIMxCLK = 60 MHz 1- tTIMxCLK 16.7 - ns AHB/APB1 prescaler = 1, fTIMxCLK = 30 MHz 1- tTIMxCLK 33.3 - ns fEXT Timer external clock frequency on CH1 to CH4 fTIMxCLK = 60 MHz APB1= 30 MHz 0 fTIMxCLK/2 MHz 030 MHz ResTIM Timer resolution - 16/32 bit tCOUNTER 16-bit counter clock period when internal clock is selected 1 65536 tTIMxCLK 0.0167 1092 µs 32-bit counter clock period when internal clock is selected 1- tTIMxCLK 0.0167 71582788 µs tMAX_COUNT Maximum possible count - 65536 × 65536 tTIMxCLK - 71.6 s |
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