DCS WDU models User's Guide download pdf (Page 54)

UC864-E/G/WD/WDU Hardware User Guide

1vv0300766a Rev.4

- 03/02/09

11. General Purpose I/O

The general-purpose I/O pads can be configured to act in three different ways:

• input

• output

• alternate function (internally controlled)

Input pads can only be read and report the digital value (high or low) present on the

pad at the read time; output pads can only be written or queried and set the value of

the pad output; an alternate function pad is internally controlled by the UC864-E/G

/WD/WDU firmware and acts depending on the function implemented.

The following GPIOs are available on the UC864-E/G/WD/WDU.

PIN Signal I/O Function Type

Drive

strength

Default

State

ON_OFF

State

Reset

State

Note

TGPIO_

I/O

GPIO01

Configurable

GPIO

CMOS

2.6V

2mA INPUT LOW HIGH

TGPIO_

I/O

GPIO02

Configurable

GPIO

CMOS

2.6V

2mA INPUT LOW HIGH

TGPIO_

I/O

GPIO03

Configurable

GPIO

CMOS

2.6V

2mA INPUT LOW LOW

TGPIO_

I/O

GPIO04

Configurable

GPIO

CMOS

2.6V

2mA INPUT LOW LOW

Alternate

Function (RF

Transmissio

n Control)

TGPIO_

I/O

GPIO05

Configurable

GPIO

CMOS

2.6V

2mA INPUT LOW LOW

Alternate

Function

(RFTXMON)

TGPIO_

I/O

GPIO06

Configurable

GPIO

CMOS

2.6V

2mA INPUT LOW HIGH

Alternate

function

(ALARM)

TGPIO_

I/O

GPIO07

Configurable

GPIO

CMOS

2.6V

2mA INPUT LOW LOW

Alternate

function

(BUZZER)

TGPIO_

I/O

GPIO08

Configurable

GPIO

CMOS

2.6V

2mA INPUT LOW LOW

TGPIO_

I/O

GPIO09

Configurable

GPIO

CMOS

2.6V

2mA INPUT LOW HIGH

TGPIO_

I/O

GPIO10

Configurable

GPIO

CMOS

2.6V

2mA INPUT LOW LOW

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DCS WDU models User's Guide Page 54

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