Atmel Evaluation Kit AT91SAM9G25-EK AT91SAM9G25-EK Data Sheet
Product codes
AT91SAM9G25-EK
715
SAM9G25 [DATASHEET]
11032D–ATARM–10-Mar-2014
36.6.11.4 WAVSEL = 11
When WAVSEL = 11, the value of TC_CV is incremented from 0 to RC. Once RC is reached, the value of TC_CV is
decremented to 0, then re-incremented to RC and so on. See
decremented to 0, then re-incremented to RC and so on. See
.
A trigger such as an external event or a software trigger can modify TC_CV at any time. If a trigger occurs while TC_CV
is incrementing, TC_CV then decrements. If a trigger is received while TC_CV is decrementing, TC_CV then increments.
See
is incrementing, TC_CV then decrements. If a trigger is received while TC_CV is decrementing, TC_CV then increments.
See
RC Compare can stop the counter clock (CPCSTOP = 1) and/or disable the counter clock (CPCDIS = 1).
Figure 36-13.WAVSEL = 11 Without Trigger
Figure 36-14.WAVSEL = 11 With Trigger
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