Tel: 886-2-29162151
Fax: 886-2-29174598
Princeton Technology Corp.
URL: http://www.princeton.com.tw
Infrared Remote Control Transmitter
PT2221/2
PT2221 APPLICATION CIRCUIT
1
3V
470
IR
LED
10
16 V
F
+
200 pf
200 pf
LED
455 KHz
OSCI OSCO
KI0
VDD LMP REM
SEL
Vss
KI1
KI2
KI3
PT2221
CCS
KI/O0 KI/O1 KI/O2 KI/O3 KI/O4 KI/O5
KI/O6 KI/O7
For Custom Code
Selection
100K
IN4148
Note: The Vcc and Vss Terminals must be “SHORT” before the batteries are loaded to the
transmitter handset to insure that PT2221 Power On Reset Function will operate properly.
PT2221/2 v 3.4
Page 3
Revised Oct. 2000
PTC [ PRINCETON TECHNOLOGY CORP ]
