AT91RM3400-DK Atmel, AT91RM3400-DK Datasheet - Page 203

• Manufacturer Part Number: AT91RM3400-DK
• Description: KIT DEV FOR AT91RM3400
• Manufacturer: Atmel
• Series: AT91SAM Smart ARMr
• Type: MCUr

Specifications of AT91RM3400-DK

• Contents: Evaluation Board, Software and Documentation
• Processor To Be Evaluated: AT91RM3400
• Data Bus Width: 32 bit
• Interface Type: RS-232, USB
• For Use With/related Products: AT91RM3400
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Parallel Input/Output Controller (PIO)
Overview
1790A–ATARM–11/03
The Parallel Input/Output Controller (PIO) manages up to 32 fully programmable input/output
lines. 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.
Each I/O line is associated with a bit number in all of the 32-bit registers of the 32-bit wide
User Interface.
Each I/O line of the PIO Controller features:
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The PIO Controller also features a synchronous output providing up to 32 bits of data output in
a single write operation.
Important features of the PIO also include:
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An input change interrupt enabling level change on any I/O line.
A glitch filter providing rejection of pulses lower than one-half of clock cycle.
Multi-drive capability similar to an open drain I/O line.
Control of the the pull-up of the I/O line.
Input visibility and output control.
Up to 32 Programmable I/O Lines
Fully Programmable through Set/Clear Registers
Multiplexing of Two Peripheral Functions per I/O Line
For each I/O Line (Whether Assigned to a Peripheral or Used as General Purpose I/O)
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Synchronous Output, Provides Set and Clear of Several I/O lines in a Single Write
Input Change Interrupt
Glitch Filter
Multi-drive Option Enables Driving in Open Drain
Programmable Pull Up on Each I/O Line
Pin Data Status Register, Supplies Visibility of the Level on the Pin at Any Time
AT91RM3400
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