Tel886-2-29162151
Fax886-2-29174598
URL: http://www.princeton.com.tw
Infrared Remote Control Transmitter Preliminary
PT2221A/2222A
DESCRIPTION
The PT2221A and PT2222A are remote control transmitters utilizing CMOS Technology
specially designed for use on infrared remote control applications. PT2221A is packaged in 20
pins SO and capable of controlling 32 functions and 3 double keys. PT2222A, on the other hand,
is housed in 24 pins SO and capable of controlling 64 function keys and 3 double keys.
PT2221A/2222A may be paired with PT2225 to construct a powerful remote control system.
FEATURES
CMOS Technology
Low Power Consumption (V
DD
=2.0
5.5V)
Using SEL pin, PT2221A can support 64+6 function codes
Using SEL pin, PT2222A can support 128 + 6 function codes
Customer Code can be selected (please contact PTC for details)
PT2221A/2222A can generated output data without carrier frequency by /DREM pin.
APPLICATIONS
Audio Equipment
Television (TV)
Cable TV Tuner
Video Cassette Recorder (VCR)
Cassette Deck
Air Conditioner
Video Compact Disk (VCD)
DVD ROM/Player
Moniputer / Multi-Media Personal Computer System
PT2221A/2222A pre1.0
- 1-
Nov. 2002
Tel886-2-29162151
Fax886-2-29174598
URL: http://www.princeton.com.tw
Infrared Remote Control Transmitter Preliminary
PT2221A/2222A
PT2221A APPLICATION CIRCUIT
KI
KI
KI
KI
0
1
2
3
KI/O KI/O KI/O KI/O KI/O KI/O KI/O KI/O
0
1
2
3
4
5
6
7
PT2221A
OSCI OSCO V
DD
/DREM REM
SEL
Vss
CCS
455 KHz
200 pf
200 pf
3V
1
IR
LED
For Custom Code
Selection
100K
IN4148
+
10 F
16 V
Note: The Vcc and Vss Terminals must be "SHORT" before the batteries are loaded to the
transmitter handset to insure that PT2221A Power On Reset Function will operate properly.
PT2221A/2222A pre1.0
- 3-
Nov. 2002
Tel886-2-29162151
Fax886-2-29174598
URL: http://www.princeton.com.tw
Infrared Remote Control Transmitter Preliminary
PT2221A/2222A
PT2222A APPLICATION CIRCUIT
KI
KI
KI
KI
KI
KI
KI
KI
0
1
2
3
4
5
6
7
KI/O
KI/O KI/O KI/O
KI/O KI/O KI/O
KI/O
0
1
2
3
4
5
6
7
PT2222A
OSCI OSCO V
DD
/DREM
REM
SEL
Vss
CCS
455 KHz
200 pf
200 pf
3V
IR
LED
1
+
10 F
16 V
For Custom Code
Selection
IN4148
100K
Note: The Vcc and Vss Terminals must be "SHORT" before the batteries are loaded to the
transmitter handset to insure that PT2222A Power On Reset Function will operate properly.
PT2221A/2222A pre1.0
- 4-
Nov. 2002
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