AT32UC3L064_1 ATMEL [ATMEL Corporation], AT32UC3L064_1 Datasheet - Page 331

• Manufacturer Part Number: AT32UC3L064_1
• Description: AVR32 32-bit Microcontroller
• Manufacturer: ATMEL [ATMEL Corporation]

19. General-Purpose Input/Output Controller (GPIO)
19.1
19.2
32099A–AVR32–06/09
Features
Overview
Version: 2.1.1.4
•
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
Each GPIO line features:
– Configurable pin-change, rising-edge, or falling-edge interrupt
– Configurable peripheral event generator
– Glitch filter providing rejection of pulses shorter than one clock cycle
– Open Drain mode allowing an I/O pin to be shared between the MCU and external
– Input visibility and output control
– Multiplexing of peripheral functions on I/O pins
– Programmable internal pull-up resistor
– Programmable internal pull-down resistor
– Programmable internal buskeeper
– Programmable output driver strength
– Programmable internal input Schmitt trigger
– Programmable output slew rate
– Optional locking of configuration to avoid accidental reconfiguration
components
Section 19.6.2.10
for details.
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