PT2248 datasheet(3/19 Pages) PTC

Part #	PT2248

Description	Infrared Remote Control Transmitter

PDF	19 Pages

Scroll/Zoom	100%

Manufacturer	PTC [Princeton Technology Corp]

Direct Link	http://www.princeton.com.tw

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3 / 19 page

Tel: 886-2-66296288

Fax: 886-2-29174598

URL: http://www.princeton.com.tw

PT2248 V2.7

- 3 -

June, 2005

Infrared Remote Control Transmitter

PT2248

PIN DESCRIPTION

Pin Name

Pin No.

I/O

Description

VSS

Negative Supply Voltage Terminal

VCC

Positive Supply Voltage Terminal

XT, /XT

2, 3

I, O

OSC Input/Output

Terminal for OSC, and used for connecting a 455KHz ceramic

resonator, etc.

K1 ~ K6

4 ~ 9

Key Code Input.

Key Input Terminals for Key Matrix

18 Keys can be connected

at T1 ~ T3 x K1 ~ K6

T1 ~ T3

10 ~ 12

Scan Key Code Output.

Digital Timing Output Terminals for

Key Matrix

(with a built-in pull-down

resistor)

/CODE

Tx/Rx matching Code Common.

Terminal for matching code between transmitting and receiving.

TEST

Transmitter Key Code Testing Function.

Keep this terminal open.

TXOUT

Transmitting Signal Output.

Transmitting signal consists of 12-bit per word and is modulated by

a 38KHz carrier wave.

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