Atmel Xplained Evaluation Board AT32UC3A3-XPLD AT32UC3A3-XPLD Fiche De Données
Codes de produits
AT32UC3A3-XPLD
381
32072H–AVR32–10/2012
AT32UC3A3
20. General-Purpose Input/Output Controller (GPIO)
Rev: 1.1.0.4
20.1
Features
Each I/O line of the GPIO features:
•
Configurable pin-change, rising-edge or falling-edge interrupt on any I/O line
•
A glitch filter providing rejection of pulses shorter than one clock cycle
•
Input visibility and output control
•
Multiplexing of up to four peripheral functions per I/O line
•
Programmable internal pull-up resistor
20.2
Overview
The General Purpose Input/Output Controller manages the I/O pins of the microcontroller. Each
I/O line may be dedicated as a general-purpose I/O or be assigned to a function of an embedded
peripheral. This assures effective optimization of the pins of a product.
I/O line may be dedicated as a general-purpose I/O or be assigned to a function of an embedded
peripheral. This assures effective optimization of the pins of a product.
20.3
Block Diagram
Figure 20-1. GPIO Block Diagram
20.4
Product Dependencies
In order to use this module, other parts of the system must be configured correctly, as described
below.
below.
Interrupt Controller
Power Manager
Embedded
Peripheral
General Purpose
Input/Output - GPIO
GPIO Interrupt Request
CLK_GPIO
Pin Control
Signals
PIN
PIN
PIN
PIN
PIN
MCU
I/O Pins
PB Configuration
Interface