Atmel SAM4L-EK Atmel ATSAM4L-EK ATSAM4L-EK Data Sheet
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Product codes
ATSAM4L-EK
825
42023E–SAM–07/2013
ATSAM4L8/L4/L2
• ACPA: RA Compare Effect on TIOA
• WAVE
1: Waveform mode is enabled.
0: Waveform mode is disabled (Capture mode is enabled).
• WAVSEL: Waveform Selection
• ENETRG: External Event Trigger Enable
1: The external event resets the counter and starts the counter clock.
0: The external event has no effect on the counter and its clock. In this case, the selected external event only controls the TIOA
output.
• EEVT: External Event Selection
Note:
1. If TIOB is chosen as the external event signal, it is configured as an input and no longer generates waveforms and subse-
quently no IRQs.
• EEVTEDG: External Event Edge Selection
• CPCDIS: Counter Clock Disable with RC Compare
1: Counter clock is disabled when counter reaches RC.
0: Counter clock is not disabled when counter reaches RC.
ACPA
Effect
0
none
1
set
2
clear
3
toggle
WAVSEL
Effect
0
UP mode without automatic trigger on RC Compare
1
UPDOWN mode without automatic trigger on RC Compare
2
UP mode with automatic trigger on RC Compare
3
UPDOWN mode with automatic trigger on RC Compare
EEVT
Signal selected as external event
TIOB Direction
0
TIOB
input
(1)
1
XC0
output
2
XC1
output
3
XC2
output
EEVTEDG
Edge
0
none
1
rising edge
2
falling edge
3
each edge