Tel: 886-2-29162151
Fax: 886-2-29174598
Princeton Technology Corp.
URL: http://www.princeton.com.tw
Infrared Remote Control Transmitter
PT2221/2
PT2222 APPLICATION CIRCUIT
3V
1
+
IR
LED
470
10
16 V
F
200 pf
200 pf
LED
455 KHz
OSCI
OSCO
VDD LMP
REM
KI0
KI1
KI2
KI3
KI4
KI5
KI6
KI7
SEL
Vss
PT2222
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 PT2222 Power On Reset Function will operate properly.
PT2221/2 v 3.4
Page 4
Revised Oct. 2000
PTC [ PRINCETON TECHNOLOGY CORP ]
