STM8S datasheet(151/467 Pages) STMICROELECTRONICS

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RM0016

16-bit advanced control timer (TIM1)

261

17.4

TIM1 clock/trigger controller

The clock/trigger controller allows the timer clock sources, input triggers, and output triggers

to be configured. The block diagram is shown in Figure 43.

Figure 43. Clock/trigger controller block diagram

17.4.1

Prescaler clock (CK_PSC)

The time base unit prescaler clock (CK_PSC) can be provided by the following clock

sources:

•

Internal clock (fMASTER)

•

External clock mode 1: External timer input (TIx)

•

External clock mode 2: External trigger input (ETR)

•

Internal trigger inputs (ITRi): using one timer as prescaler for another timer. Refer to

Using one timer as prescaler for another timer on page 161 for more details.

MSv45285V1

fMASTER

Trigger

Controller

TIM1_ETR

ETR

Polarity Selection & Edge

Detector & Prescaler

Input filter

ETRF

TRGO

To other

timers

TRGO from TIM6 (ITR0)

TRGO from TIM5 (ITR2)

From input stage

ETRP

ITR

TI1F_ED

From input stage

TI1FP1

TI1FP2

Encoder

Interface

TRC

TRGI

TGI

Clock / Trigger

Mode

Controller

Reset, Enable,

Up/Down, Count

CK_PSC

To Time Base Unit

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