16-bit general purpose timers•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 andenable)3.12.28-bit basic timerThe 8-bit timer consists of an 8-bit up auto-reload counter driven by a programmableprescaler. It can be used for timebase generation with interrupt generation on timeroverflow.3.13Watchdog timersThe watchdog system is based on two independent timers providing maximum security tothe applications.3.13.1Window watchdog timerThe window watchdog (WWDG) is used to detect the occurrence of a software fault, usuallygenerated by external interferences or by unexpected logical conditions, which cause theapplication program to abandon its normal sequence.3.13.2Independent watchdog timerThe independent watchdog peripheral (IWDG) can be used to resolve processormalfunctions due to hardware or software failures.It is clocked by the internal LSI RC clock source, and thus stays active even in case of aCPU clock failure.3.14BeeperThe beeper function outputs a signal on the BEEP pin for sound generation. The signal is inthe range of 1, 2 or 4 kHz.
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