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STM32H753II датащи(PDF) 188 Page - STMicroelectronics |
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STM32H753II датащи(HTML) 188 Page - STMicroelectronics |
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188 / 361 page ![]() Electrical characteristics (rev Y) STM32H753xI 188/360 DS12117 Rev 8 6.3.31 Timer characteristics The parameters given in Table 102 are guaranteed by design. Refer to Section 6.3.15: I/O port characteristics for details on the input/output alternate function characteristics (output compare, input capture, external clock, PWM output). Table 102. TIMx characteristics(1)(2) 1. TIMx is used as a general term to refer to the TIM1 to TIM17 timers. 2. Guaranteed by design. Symbol Parameter Conditions(3) 3. The maximum timer frequency on APB1 or APB2 is up to 240 MHz, by setting the TIMPRE bit in the RCC_CFGR register, if APBx prescaler is 1 or 2 or 4, then TIMxCLK = rcc_hclk1, otherwise TIMxCLK = 4x Frcc_pclkx_d2. Min Max Unit tres(TIM) Timer resolution time AHB/APBx prescaler=1 or 2 or 4, fTIMxCLK = 240 MHz 1- tTIMxCLK AHB/APBx prescaler>4, fTIMxCLK = 140 MHz 1- tTIMxCLK fEXT Timer external clock frequency on CH1 to CH4 f TIMxCLK = 240 MHz 0 fTIMxCLK/2 MHz ResTIM Timer resolution - 16/32 bit tMAX_COUNT Maximum possible count with 32-bit counter -- 65536 × 65536 tTIMxCLK |
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