STM8TL53X4 datasheet(15/84 Pages) STMICROELECTRONICS

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STM8TL52x4 STM8TL53x4

Product overview

3.9

System configuration controller

The system configuration controller provides the capability to remap some alternate

functions on different I/O ports. TIM3 channels can be remapped.

3.10

Independent watchdog

The independent watchdog (IWDG) peripheral can be used to resolve processor

malfunctions due to hardware or software failures.

It is clocked by the 38 kHz LSI internal RC clock source, and thus stays active even in case

of a CPU clock failure.

3.11

Window watchdog

The window watchdog (WWDG) is based on a 7-bit downcounter that can be set as free-

running. It can be used as a watchdog to reset the device when a problem occurs. It is

clocked from the main clock. It has an early warning interrupt capability and the counter can

be frozen in debug mode.

3.12

Auto-wakeup counter

The auto-wakeup (AWU) counter is used to wakeup the device from Active-halt mode.

3.13

General purpose and basic timers

STM8TL5xx4 devices contain two 16-bit general purpose timers (TIM2 and TIM3) and one

8-bit basic timer (TIM4).

16-bit general purpose timers

The 16-bit timers consist of 16-bit up/down auto-reload counters driven by a programmable

prescaler. They perform a wide range of functions, including:



Timebase generation



Measuring the pulse lengths of input signals (input capture)



Generating output waveforms (output compare, PWM and One pulse mode)



Interrupt capability on various events (capture, compare, overflow, break, trigger)



Synchronization with other timers or external signals (external clock, reset, trigger and

enable)

8-bit basic timer

The 8-bit timer consists of an 8-bit up auto-reload counter driven by a programmable

prescaler. It can be used for timebase generation with interrupt generation on timer

overflow.

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