Atmel SAM4S-EK2 Atmel ATSAM4S-EK2 ATSAM4S-EK2 Data Sheet

 773

SAM4S [DATASHEET]

11100E–ATARM–24-Jul-13

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 

. 

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 

. 

RC Compare can stop the counter clock (CPCSTOP = 1) and/or disable the counter clock (CPCDIS = 1).

Time

Counter Value

R

C

R

B

R

A

TIOB

TIOA

Counter decremented by compare match with RC

0xFFFF

Waveform Examples

Time

Counter Value

TIOB

TIOA

Counter decremented by compare match with RC

0xFFFF

Waveform Examples

Counter decremented

by trigger

Counter incremented

by trigger

R

C

R

B

R

A