ATAR092 datasheet(46/100 Pages) ATMEL

46 / 100 page

ATAR092/ATAR892

4535C–4BMCU–02/04

Figure 45. Counter 3 Stage

The status of the timer as well as the occurrence of a compare match or an edge detect

of the input signal is indicated by the status register T2ST. This allows identification of

the interrupt source because all these events share only one timer interrupt.

Timer 3 compares data values

The Timer 3 has two 8-bit compare registers (T3CO1, T3CO2). The compare data value

can be ‘m’ for each of the Timer 3 compare registers.

The compare data value for the compare registers is:

m = x +1

≤x ≤255

Timer 3 – Mode 1:

Timer/Counter

The selected clock from an internal or external source increments the 8-bit counter. In

this mode, the timer can be used as event counter for external clocks at T3I or as timer

for generating interrupts and pulses at T3O. The counter value can be read by the soft-

ware via the capture register.

Figure 46. Counter Reset with Each Compare Match

8-bit comparator

Compare register 1

RES

Capture register

8-bit counter

Compare register 2

Control

C31

C32

Control

T3SM1

T3RM1

T3IM1

T3TM1

TOG2

T3I

T3TM2

T3IM2

T3RM2

T3SM2

CL3

T3EIM

TOG3

INT5

CM31

CM32

: T3M1

: T3M2

00012

T3R

Counter 3

CM31

INT5

T3O

CM32

ATAR092 Datasheet(PDF) 46 Page - ATMEL Corporation

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