Atmel ARM-Based Evaluation Kit AT91SAM9N12-EK AT91SAM9N12-EK Data Sheet
Product codes
AT91SAM9N12-EK
657
SAM9N12/SAM9CN11/SAM9CN12 [DATASHEET]
11063K–ATARM–05-Nov-13
37.6.12.1 WAVSEL = 00
When WAVSEL = 00, the value of TC_CV is incremented from 0 to 0xFFFF. Once 0xFFFF has been reached, the value
of TC_CV is reset. Incrementation of TC_CV starts again and the cycle continues. See
of TC_CV is reset. Incrementation of TC_CV starts again and the cycle continues. See
.
An external event trigger or a software trigger can reset the value of TC_CV. It is important to note that the trigger may
occur at any time. See
occur at any time. See
.
RC Compare cannot be programmed to generate a trigger in this configuration. At the same time, RC Compare can stop
the counter clock (CPCSTOP = 1 in TC_CMR) and/or disable the counter clock (CPCDIS = 1 in TC_CMR).
the counter clock (CPCSTOP = 1 in TC_CMR) and/or disable the counter clock (CPCDIS = 1 in TC_CMR).
Figure 37-8. WAVSEL= 00 without trigger
Figure 37-9. WAVSEL= 00 with Trigger
Time
Counter Value
R
C
R
B
R
A
TIOB
TIOA
Counter cleared by compare match with 0xFFFF
0xFFFF
Waveform Examples
Time
Counter Value
R
C
R
B
R
A
TIOB
TIOA
Counter cleared by compare match with 0xFFFF
0xFFFF
Waveform Examples
Counter cleared by trigger