at91rm3400 ATMEL Corporation, at91rm3400 Datasheet - Page 355
at91rm3400
Manufacturer Part Number
at91rm3400
Description
Atmel Advanced At91 Arm Microcontroller
Manufacturer
ATMEL Corporation
Datasheet
1.AT91RM3400.pdf
(461 pages)
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WAVSEL = 11
Figure 149. WAVSEL = 11 Without Trigger
Figure 150. WAVSEL = 11 With Trigger
1790A–ATARM–11/03
Waveform Examples
0xFFFF
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
149.
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 150.
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
AT91RM3400
by trigger
Time
Time
355
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