AT91SAM7S32-AI ATMEL [ATMEL Corporation], AT91SAM7S32-AI Datasheet - Page 350

• Manufacturer Part Number: AT91SAM7S32-AI
• Description: AT91 ARM Thumb-based Microcontrollers
• Manufacturer: ATMEL [ATMEL Corporation]

WAVSEL = 10
350
AT91SAM7S32 Preliminary
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 Figure 155.
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 156.
In addition, RC Compare can stop the counter clock (CPCSTOP = 1 in TC_CMR) and/or dis-
able the counter clock (CPCDIS = 1 in TC_CMR).
Figure 155. WAVSEL = 10 Without Trigger
Figure 156. WAVSEL = 10 With 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
Counter cleared by compare match with RC
Counter cleared by compare match with RC
Counter cleared by trigger
Time
6071A–ATARM–28-Oct-04
Time