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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32F745VG датащи(PDF) 145 Page - STMicroelectronics |
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STM32F745VG датащи(HTML) 145 Page - STMicroelectronics |
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145 / 227 page  DocID027590 Rev 4 145/227 STM32F745xx STM32F746xx Electrical characteristics 195 5.3.19 TIM timer characteristics The parameters given in Table 60 are guaranteed by design. Refer to Section 5.3.17: I/O port characteristics for details on the input/output alternate function characteristics (output compare, input capture, external clock, PWM output). 5.3.20 RTC characteristics 5.3.21 12-bit ADC characteristics Unless otherwise specified, the parameters given in Table 62 are derived from tests performed under the ambient temperature, fPCLK2 frequency and VDDA supply voltage conditions summarized in Table 17. Table 60. TIMx characteristics(1)(2) 1. TIMx is used as a general term to refer to the TIM1 to TIM12 timers. 2. Guaranteed by design. Symbol Parameter Conditions(3) 3. The maximum timer frequency on APB1 or APB2 is up to 216 MHz, by setting the TIMPRE bit in the RCC_DCKCFGR register, if APBx prescaler is 1 or 2 or 4, then TIMxCLK = HCLK, otherwise TIMxCLK = 4x PCLKx. Min Max Unit tres(TIM) Timer resolution time AHB/APBx prescaler=1 or 2 or 4, fTIMxCLK = 216 MHz 1- tTIMxCLK AHB/APBx prescaler>4, fTIMxCLK = 108 MHz 1- tTIMxCLK fEXT Timer external clock frequency on CH1 to CH4 f TIMxCLK = 216 MHz 0 fTIMxCLK/2 MHz ResTIM Timer resolution - 16/32 bit tMAX_COUNT Maximum possible count with 32-bit counter -- 65536 × 65536 tTIMxCLK Table 61. RTC characteristics Symbol Parameter Conditions Min Max -fPCLK1/RTCCLK frequency ratio Any read/write operation from/to an RTC register 4- Table 62. ADC characteristics Symbol Parameter Conditions Min Typ Max Unit VDDA Power supply VDDA −VREF+ < 1.2 V 1.7(1) -3.6 V VREF+ Positive reference voltage 1.7(1) -VDDA V VREF- Negative reference voltage - - 0 - V |
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