Rainbow-electronics ATAR862-8 User Manual download pdf (Page 56)

ATAR862-8

4589B–4BMCU–02/03

Figure 52. 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 0 £ 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.

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

T3TM2T3IM2T3RM2T3SM2

CL3

T3EIM

TOG3

INT5

CM31

CM32

: T3M1

: T3M2

1 2 ... 51 52 53 54 55 56 57 58 59 60 61 ... 105 106

No comments

Rainbow-electronics ATAR862-8 User Manual Page 56