AT32UC3C2512C Automotive Atmel Corporation, AT32UC3C2512C Automotive Datasheet - Page 452

• Manufacturer Part Number: AT32UC3C2512C Automotive
• Manufacturer: Atmel Corporation

23. General-Purpose Input/Output Controller (GPIO)
23.1
23.2
23.3
9166C–AVR-08/11
Features
Overview
Block Diagram
Rev: 2.1.2.5
•
The General Purpose Input/Output Controller (GPIO) controls the I/O pins of the microcontroller.
Each GPIO pin may be used as a general-purpose I/O or be assigned to a function of an embed-
ded peripheral.
The GPIO is configured using the Peripheral Bus (PB). Some registers can also be configured
using the low latency CPU Local Bus. See
Figure 23-1. GPIO Block Diagram
Each GPIO line features:
– Configurable pin-change, rising-edge, or falling-edge interrupt
– Glitch filter providing rejection of pulses shorter than one clock cycle
– Input visibility and output control
– Multiplexing of peripheral functions on I/O pins
– Programmable internal pull-up resistor
– Programmable internal pull-down resistor
– Programmable output driver strength
– Optional locking of configuration to avoid accidental reconfiguration
Power Manager
Controller
Interrupt
Embedded
Peripheral
Configuration
GPIO Interrupt
CLK_GPIO
Interface
Request
Pin Control
Signals
Input/Output - GPIO
General Purpose
Section 23.6.2.8
for details.
AT32UC3C
PIN
PIN
PIN
PIN
PIN
MCU
Pins
I/O
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