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STM32F103XC Datasheet(PDF) 19 Page - STMicroelectronics |
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STM32F103XC Datasheet(HTML) 19 Page - STMicroelectronics |
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19 / 143 page  DS5792 Rev 13 19/143 STM32F103xC, STM32F103xD, STM32F103xE Description 135 periodic interrupt. It is clocked by a 32.768 kHz external crystal, resonator or oscillator, the internal low-power RC oscillator or the high-speed external clock divided by 128. The internal low-speed RC has a typical frequency of 40 kHz. The RTC can be calibrated using an external 512 Hz output to compensate for any natural quartz deviation. The RTC features a 32-bit programmable counter for long term measurement using the Compare register to generate an alarm. A 20-bit prescaler is used for the time base clock and is by default configured to generate a time base of 1 second from a clock at 32.768 kHz. 2.3.17 Timers and watchdogs The high-density STM32F103xC/D/E performance line devices include up to two advanced- control timers, up to four general-purpose timers, two basic timers, two watchdog timers and a SysTick timer. Table 4 compares the features of the advanced-control, general-purpose and basic timers. Table 4. High-density timer feature comparison Timer Counter resolution Counter type Prescaler factor DMA request generation Capture/compare channels Complementary outputs TIM1, TIM8 16-bit Up, down, up/down Any integer between 1 and 65536 Yes 4 Yes TIM2, TIM3, TIM4, TIM5 16-bit Up, down, up/down Any integer between 1 and 65536 Yes 4 No TIM6, TIM7 16-bit Up Any integer between 1 and 65536 Yes 0 No |
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