ATAR092 datasheet(47/100 Pages) ATMEL

47 / 100 page

ATAR092/ATAR892

4535C–4BMCU–02/04

Figure 47. Counter Reset with Compare Register 2 and Toggle with Start

Figure 48. Single Action of Compare Register 1

Timer 3 – Mode 2:

Timer/Counter, External Trigger Restart and External

Capture (with T3I Input)

The counter is driven by an internal clock source. After starting with T3R, the first edge

from the external input T3I starts the counter. The following edges at T3I load the cur-

rent counter value into the capture register, reset the counter and restart it. The edge

can be selected by the programmable edge decoder of the timer input stage. If sin-

gle-action mode is activated for one or both compare registers the trigger signal restarts

the single action.

Figure 49. Externally Triggered Counter Reset and Start Combined with Single-action

Mode

123

567

T3R

Counter 3

CM31

INT5

T3O

Toggle

by start

T3O

CL3

CM32

0 012 345 678 9 10 0 12

Counter 3

CM31

CM32

T3O

0 1 2 01201 2 012 0 120 12 0 1 2 0 120 1

Toggle by start

T3R

000000 00123456

Counter 3

T3EX

CM31

CM32

7 8 9 10 0 12 X X X 0 1 23 4 5 67 89 10 01 2 X X

T3R

T3O

ATAR092 Datasheet(PDF) 47 Page - ATMEL Corporation

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