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RM0351 Reset and clock control (RCC)
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The input capture channel of the Timer 15 can be a GPIO line or an internal clock of the
MCU. This selection is performed through the TI1_RMP bit in the TIM15_OR register. The
possibilities are the following ones:
• TIM15 Channel1 is connected to the GPIO. Refer to the alternate function mapping in
the device datasheets.
• TIM15 Channel1 is connected to the LSE.
Figure 15. Frequency measurement with TIM16 in capture mode
The input capture channel of the Timer 16 can be a GPIO line or an internal clock of the
MCU. This selection is performed through the TI1_RMP[1:0] bits in the TIM16_OR register.
The possibilities are the following ones:
• TIM16 Channel1 is connected to the GPIO. Refer to the alternate function mapping in
the device datasheets.
• TIM16 Channel1 is connected to the LSI clock.
• TIM16 Channel1 is connected to the LSE clock.
• TIM16 Channel1 is connected to the RTC wakeup interrupt signal. In this case the RTC
interrupt should be enabled.
Figure 16. Frequency measurement with TIM17 in capture mode
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