STM8S datasheet(186/467 Pages) STMICROELECTRONICS

No. de pieza	STM8S

Descripción Electrónicos	STM8S Series and STM8AF Series 8-bit microcontrollers

PDF	467 Pages

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Fabricante Electrónico	STMICROELECTRONICS [STMicroelectronics]

Página de inicio	http://www.st.com

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186 / 467 page

16-bit advanced control timer (TIM1)

RM0016

186/467

DocID14587 Rev 14

Figure 80 gives an example of counter operation, showing count signal generation and

direction control. It also shows how input jitter is compensated where both edges are

selected. This might occur if the sensor is positioned near one of the switching points. In the

example below, configuration is as follows:

•

CC1S = 01 (TIM1_CCMR1 register, IC1 mapped on TI1)

•

CC2S = 01 (TIM1_CCMR2 register, IC2 mapped on TI2)

•

CC1P = 0 (TIM1_CCER1 register, IC1 non-inverted, IC1=TI1)

•

CC2P = 0 (TIM1_CCER2 register, IC2 non-inverted, IC2=TI2)

•

SMS = 011 (TIM1_SMCR register, both inputs are active on both rising and falling

edges).

•

CEN = 1 (TIM1_CR1 register, counter is enabled)

Figure 80. Example of counter operation in encoder interface mode

Figure 81 gives an example of counter behavior when IC1 polarity is inverted (same

configuration as Figure 80 except that CC1P =1).

Figure 81. Example of encoder interface mode with IC1 polarity inverted

STM8S Datasheet(PDF) 186 Page - STMicroelectronics