AT91SAM7S32-AI ATMEL [ATMEL Corporation], AT91SAM7S32-AI Datasheet - Page 352
AT91SAM7S32-AI
Manufacturer Part Number
AT91SAM7S32-AI
Description
AT91 ARM Thumb-based Microcontrollers
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT91SAM7S32-AI.pdf
(446 pages)
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WAVSEL = 11
Figure 159. WAVSEL = 11 Without Trigger
Figure 160. WAVSEL = 11 With Trigger
352
Waveform Examples
0xFFFF
AT91SAM7S32 Preliminary
Waveform Examples
Counter Value
R
R
R
TIOB
TIOA
0xFFFF
C
B
A
Counter Value
TIOB
TIOA
R
R
R
C
B
A
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 Figure
159.
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 Figure 160.
RC Compare can stop the counter clock (CPCSTOP = 1) and/or disable the counter clock
(CPCDIS = 1).
Counter decremented by compare match with RC
Counter decremented by compare match with RC
Counter decremented
Counter incremented
by trigger
by trigger
6071A–ATARM–28-Oct-04
Time
Time
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