STM8L101F2P3ATR datasheet(12/81 Pages) STMICROELECTRONICS

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Product overview

STM8L101xx

12/81

Doc ID 15275 Rev 11

3.10

Auto-wakeup counter

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

3.11

General purpose and basic timers

STM8L101xx 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:

●

Time base 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.

3.12

Beeper

The STM8L101xx devices include a beeper function used to generate a beep signal in the

range of 1, 2 or 4 kHz when the LSI clock is operating at a frequency of 38 kHz.

3.13

Infrared (IR) interface

The STM8L101xx devices contain an infrared interface which can be used with an IR LED

for remote control functions. Two timer output compare channels are used to generate the

infrared remote control signals.

3.14

Comparators

The STM8L101xx features two zero-crossing comparators (COMP1 and COMP2) sharing

the same current bias and voltage reference. The voltage reference can be internal

(comparison with ground) or external (comparison to a reference pin voltage).

Each comparator is connected to 4 channels, which can be used to generate interrupt, timer

input capture or timer break. Their polarity can be inverted.

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