SAM4L Datasheet, PDF (820/1185 Pages) ATMEL Corporation – ATSAM ARM-based Flash MCU

ATSAM4L4/L2
• ACPA: RA Compare Effect on TIOA
ACPA
0
1
2
3
Effect
none
set
clear
toggle
• WAVE
1: Waveform mode is enabled.
0: Waveform mode is disabled (Capture mode is enabled).
• WAVSEL: Waveform Selection
WAVSEL
0
1
2
3
Effect
UP mode without automatic trigger on RC Compare
UPDOWN mode without automatic trigger on RC Compare
UP mode with automatic trigger on RC Compare
UPDOWN mode with automatic trigger on RC Compare
• 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
EEVT
0
Signal selected as external event
TIOB
TIOB Direction
input⁽¹⁾
1
XC0
output
2
XC1
output
3
XC2
output
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
EEVTEDG
0
1
2
3
Edge
none
rising edge
falling edge
each edge
• 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.
42023C–SAM–02/2013
820