Atmel Evaluation Kit for AT32uC3A0512, 32-Bit AVR Microcontroller Atmel ATEVK1105 ATEVK1105 Data Sheet
Product codes
ATEVK1105
652
AT32UC3A
Figure 31-12.
WAVSEL = 11 Without Trigger
Figure 31-13.
WAVSEL = 11 With Trigger
31.6.3.6
External Event/Trigger Conditions
An external event can be programmed to be detected on one of the clock sources (XC0, XC1,
XC2) or TIOB. The external event selected can then be used as a trigger.
The EEVT parameter in CMR selects the external trigger. The EEVTEDG parameter defines the
The EEVT parameter in CMR selects the external trigger. The EEVTEDG parameter defines the
trigger edge for each of the possible external triggers (rising, falling or both). If EEVTEDG is
cleared (none), no external event is defined.
Time
Counter Value
R
C
R
B
R
A
TIOB
TIOA
Counter decremented by compare match with RC
0xFFFF
Waveform Examples
Time
Counter Value
TIOB
TIOA
Counter decremented by compare match with RC
0xFFFF
Waveform Examples
Counter decremented
by trigger
Counter incremented
by trigger
R
C
R
B
R
A
32058K
AVR32-01/12