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STM32F100C 数据表(PDF) 75 Page - STMicroelectronics |
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STM32F100C 数据表(HTML) 75 Page - STMicroelectronics |
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75 / 98 page  STM32F100xC, STM32F100xD, STM32F100xE Electrical characteristics Doc ID 15081 Rev 7 75/98 5.3.16 TIMx characteristics The parameters given in Table 47 are guaranteed by design. Refer to Section 5.3.13: I/O current injection characteristics for details on the input/output alternate function characteristics (output compare, input capture, external clock, PWM output). 5.3.17 Communications interfaces I2C interface characteristics Unless otherwise specified, the parameters given in Table 48 are preliminary values derived from tests performed under the ambient temperature, fPCLK1 frequency and VDD supply voltage conditions summarized in Table 9. The STM32F100xx value line I2C interface meets the requirements of the standard I2C communication protocol with the following restrictions: the I/O pins SDA and SCL are mapped to are not “true” open-drain. When configured as open-drain, the PMOS connected between the I/O pin and VDD is disabled, but is still present. The I2C characteristics are described in Table 48. Refer also to Section 5.3.13: I/O current injection characteristics for more details on the input/output alternate function characteristics (SDA and SCL). Table 47. TIMx characteristics Symbol Parameter Conditions(1) 1. TIMx is used as a general term to refer to the TIM1, TIM2, TIM3, TIM4, TIM5, TIM15, TIM16 and TIM17 timers. Min Max Unit tres(TIM) Timer resolution time 1tTIMxCLK fTIMxCLK = 24 MHz 41.7 ns fEXT Timer external clock frequency on CHx(2) 2. CHx is used as a general term to refer to CH1 to CH4 for TIM1, TIM2, TIM3, TIM4 and TIM5, to the CH1 to CH2 for TIM15, and to CH1 for TIM16 and TIM17. 0fTIMxCLK/2 MHz fTIMxCLK = 24 MHz 0 12 MHz ResTIM Timer resolution 16 bit tCOUNTER 16-bit counter clock period when the internal clock is selected 1 65536 tTIMxCLK fTIMxCLK = 24 MHz 2730 µs tMAX_COUNT Maximum possible count 65536 × 65536 tTIMxCLK fTIMxCLK = 24 MHz 178 s |
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