at91sam9g20-cu ATMEL Corporation, at91sam9g20-cu Datasheet - Page 564

• Manufacturer Part Number: at91sam9g20-cu
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

34.5.11.2
564
AT91SAM9G20 Preliminary
WAVSEL = 10
Figure 34-8. WAVSEL= 00 with trigger
When WAVSEL = 10, the value of TC_CV is incremented from 0 to the value of RC, then auto-
matically reset on a RC Compare. Once the value of TC_CV has been reset, it is then
incremented and so on. See
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
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 34-9. WAVSEL = 10 Without Trigger
Waveform Examples
0xFFFF
Counter Value
R
R
R
TIOB
TIOA
C
B
A
Waveform Examples
0xFFFF
Counter Value
R
R
R
TIOB
TIOA
C
B
A
Figure
34-9.
Counter cleared by compare match with RC
Figure
Counter cleared by compare match with 0xFFFF
34-10.
Counter cleared by trigger
Time
6384B–ATARM–15-Dec-08
Time