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STM8AL318X bảng dữ liệu(PDF) 23 Page - STMicroelectronics |
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STM8AL318X bảng dữ liệu(HTML) 23 Page - STMicroelectronics |
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23 / 131 page  DocID027179 Rev 6 23/131 STM8AL318x STM8AL3L8x Functional overview 60 3.13.2 16-bit general purpose timers (TIM2, TIM3, TIM5) • 16-bit autoreload (AR) up/down-counter • 7-bit prescaler adjustable to fixed power of 2 ratios (1…128) • 2 individually configurable capture/compare channels • PWM mode • Interrupt capability on various events (capture, compare, overflow, break, trigger) • Synchronization with other timers or external signals (external clock, reset, trigger and enable) 3.13.3 8-bit basic timer (TIM4) The 8-bit timer consists of an 8-bit up auto-reload counter driven by a programmable prescaler. This timer is used for timebase generation with interrupt generation on timer overflow or for DAC trigger generation. 3.14 Watchdog timers The watchdog system is based on two independent timers providing maximum security to the applications. 3.14.1 Window watchdog timer The window watchdog (WWDG) is used to detect the occurrence of a software fault, usually generated by external interferences or by unexpected logical conditions, which cause the application program to abandon its normal sequence. 3.14.2 Independent watchdog timer The independent watchdog peripheral (IWDG) is used to resolve processor malfunctions due to hardware or software failures. It is clocked by the internal LSI RC clock source, and thus stays active even in case of a CPU clock failure. 3.15 Beeper The beeper function outputs a signal on the BEEP pin for sound generation. The signal is in the range of 1, 2 or 4 kHz. |
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