Section 28 general purpose i/o ports (gpio), 1 features – Renesas SH7781 User Manual

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28. General Purpose I/O Ports (GPIO)

Rev.1.00 Jan. 10, 2008 Page 1377 of 1658

REJ09B0261-0100

Section 28 General Purpose I/O Ports (GPIO)

28.1

Features

This LSI has sixteen general-purpose ports (A to H, J to N, and P to R), which provide 111
input/output pins.

The general-purpose I/O (GPIO) port pins are multiplexed with the pins of peripheral modules to
select whether the pins are used by the GPIO or the peripheral modules.

The GPIO has the following features.

• Each port pin is a multiplexed pin, for which the port control register can specify the pin

function and control the pull-up MOS of the pin.

• Each port has a data register that stores data for the pins.
• GPIO interrupts are supported

Note:

For the ports which can be used as GPIO interrupt pins, refer to table 28.1. For GPIO

interrupt settings, refer to section 10, Interrupt Controller (INTC).