Atmel Evaluation Kit AT91SAM9M10-G45-EK AT91SAM9M10-G45-EK Hoja De Datos

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SAM9M10 [DATASHEET]

6355F–ATARM–12-Mar-13

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 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.