Datasheet

255
32133D–11/2011
UC3D
18.6 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.
Figure 18-2. Overview of the GPIO
0
1
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
Pullup
....
Output
Output
Enable
Input
*) Register value is overrided if a peripheral function that
support this function is enabled
IFR