PT2248 View Datasheet(PDF) - Princeton Technology

Part Name

Description

Manufacturer

PT2248

Infrared Remote Control Transmitter

Princeton Technology 

Infrared Remote Control Transmitter

Tel: 886-2-66296288

Fax: 886-2-29174598

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

PT2248

PIN DESCRIPTION

Pin Name

VSS

VCC

XT, /XT

K1 ~ K6

T1 ~ T3

/CODE

TEST

TXOUT

Pin No.

1

16

2, 3

4~9

10 ~ 12

13

14

15

I/O

Description

Negative Supply Voltage Terminal

Positive Supply Voltage Terminal

OSC Input/Output

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

resonator, etc.

I

Key Code Input.

18 Keys can be connected

Key Input Terminals for Key Matrix at T1 ~ T3 x K1 ~ K6

O

Scan Key Code Output.

Digital Timing Output Terminals for

Key Matrix

(with a built-in pull-down

resistor)

I

Tx/Rx matching Code Common.

Terminal for matching code between transmitting and receiving.

I

Transmitter Key Code Testing Function.

Keep this terminal open.

Transmitting Signal Output.

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

a 38KHz carrier wave.

PT2248 V2.7

-3-

June, 2005

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