MC81F4104S datasheet(75/118 Pages) FINECHIPS

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MC81F4104S Datasheet(PDF) 75 Page - Finechips

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MC81F4104

October 19, 2009 Ver.1.35

Function Description

Interval Timer Mode

A match signal is generated and T2O pins are toggled when the T2CR register value equals the

T2DR register value. The match signal generates a timer match interrupt and clears the T2CR

Capture Mode

In capture mode, you have to set EXT0 interrupt. When the EXT0 interrupt is occurred, the T2CR

And the timer 2 overflow interrupt is generated whenever the T2CR value is overflowed.

So, If you count how many overflow is occurred and read the T2DR value in EXT0 interrupt routine, it

is possible to measure the time between two EXT0 interrupts. Or it is possible to measure the time

from the T2 initial time to the EXT0 interrupt occurred time.

The time = ( 256 * tCLK ) * overflow_count + (tCLK * T2DR)

Note

„tCLK‟ is the period time of the timer-counter‟s clock source

You must set the T2DR value before set the T2SCR register. Because T2DR value is

fetched when the count is started(the T2CC bit is set) or match/overflow event is occurred.

Manufacturer	Part No.	Datasheet	Description
Finechips	MC81F4204	3Mb / 150P	ABOV SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS
	MC81F4204B	3Mb / 150P	ABOV SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS
	MC81F4204D	3Mb / 150P	ABOV SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS
	MC81F4204M	3Mb / 150P	ABOV SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS
	MC81F4204R	3Mb / 150P	ABOV SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS

Manufacturer	Part No.	Datasheet	Description
Finechips	MC81F4204	3Mb / 150P	ABOV SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS
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