AT91SAM7S64C-AU View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT91SAM7S64C-AU

AT91SAM ARM-based Flash MCU

Atmel Corporation 

27. Parallel Input/Output Controller (PIO)

27.1 Overview

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:

• An input change interrupt enabling level change detection 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 pull-up of the I/O line.

• Input visibility and output control.

The PIO Controller also features a synchronous output providing up to 32 bits of data output in a

single write operation.

SAM7S Series [DATASHEET]

6175M–ATARM–26-Oct-12

239

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