SAM7X256_14 Datasheet, PDF (385/662 Pages) ATMEL Corporation – ARM-based Flash MCU

32.5.11.2 WAVSEL = 10
When WAVSEL = 10, the value of TC_CV is incremented from 0 to the value of RC, then automatically reset on a RC
Compare. Once the value of TC_CV has been reset, it is then incremented and so on. See Figure 32-9.
It is important to note that TC_CV can be reset at any time by an external event or a software trigger if both are
programmed correctly. See Figure 32-10.
In addition, RC Compare can stop the counter clock (CPCSTOP = 1 in TC_CMR) and/or disable the counter clock
(CPCDIS = 1 in TC_CMR).
Figure 32-9. WAVSEL = 10 Without Trigger
Counter Value
0xFFFF
Counter cleared by compare match with RC
R_C
R_B
R_A
Waveform Examples
TIOB
Time
TIOA
Figure 32-10. WAVSEL = 10 With Trigger
Counter Value
0xFFFF
Counter cleared by compare match with RC
R_C
Counter cleared by trigger
R_B
R_A
Waveform Examples
TIOB
Time
TIOA
SAM7X Series [DATASHEET]
6120K–ATARM–11-Feb-14
385