atam894 ATMEL Corporation, atam894 Datasheet - Page 50

• Manufacturer Part Number: atam894
• Description: Atam894 8k-flash Microcontroller
• Manufacturer: ATMEL Corporation

50
ATAM894
Figure 6-27. Counter Reset with Compare Register 2 and Toggle with Start
Figure 6-28. Single Action of Compare Register 1
Timer 3 – Mode 2:
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 current counter value
into the capture register, resets the counter and restarts it. The edge can be selected by the pro-
grammable edge decoder of the timer input stage. If single-action mode is activated for one or
both compare registers the trigger signal restarts the single action.
Figure 6-29. Externally Triggered Counter Reset and Start Combined with Single-action Mode
Counter 3
Counter 3
Counter 3
CM31
CM32
CM31
CM32
T3EX
T3O
T3R
T3R
T3O
CM31
CM32
INT5
T3O
T3O
CL3
T3R
0 0 1 2 3 4 5 6 7 8 9 10 0 1 2
Toggle by start
0 0 0 0 0 0 0 0 1 2 3 4 5 6
0
Toggle
by start
Timer/Counter, External Trigger Restart and External Capture
(with T3I Input)
0
0
1
2
3
4
7 8 9 10 0 1 2 X X X 0 1 2 3 4 5 6 7 8 9 10 0 1 2 X X
0 1 2 0 1 2 0 1 2 0 1 2 0 1 2 0 1 2 0 1 2 0 1 2 0 1
5
6
7
8
9
0
1
2
3
4
4679D–4BMCU–05/05
5
6
X X