Atmel SAM4L-EK Atmel ATSAM4L-EK ATSAM4L-EK Data Sheet
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Product codes
ATSAM4L-EK
541
42023E–SAM–07/2013
ATSAM4L8/L4/L2
23.6
Functional Description
The GPIO controls the I/O pins of the microcontroller. The control logic associated with each pin
is shown in the figure below.
is shown in the figure below.
Figure 23-2. Overview of the GPIO
0
1
GPIO_ODMER
0
1
0
1
GPER
1
0
OVR
ODER
PMRn
Periph. Func. A
Periph.Func. B
Periph. Func. C
PIN
PUER*
PVR
0
1
Glitch Filter
GFER
Edge Detector
1
0
Interrupt Request
IMR1
IMR0
IER
ODCRn*
OSRRn*
Drive strength and slew rate control
STER*
Schmitt trigger
PDER*
Pullup,
Pulldown and
buskeeper
...
.
Output
Output
Enable
Input
*) Register value is overrided if a peripheral function that
support this function is enabled
support this function is enabled
IFR