Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
Remote Control Decoder
PT2272
DESCRIPTION
PT2272 is a remote control decoder paired with PT2262 utilizing CMOS Technology. It has 12-bit of
tri-state address pins providing a maximum of 531,441 (or 312) address codes; thereby, drastically
reducing any code collision and unauthorized code scanning possibilities. PT2272 is available in
several options to suit every application need: variable number of data output pins, latch or momentary
output type.
FEATURES
•
•
•
•
•
•
•
•
•
CMOS Technology
Low Power Consumption
Very High Noise Immunity
Up to 12 Tri-State Code Address Pins
Up to 6 Data Pins
Wide Range of Operating Voltage: VCC=4~15V
Single Resistor Oscillator
Latch or Momentary Output Type
Available in DIP and SOP
APPLICATIONS
•
•
•
•
•
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Car Security System
Garage Door Controller
Remote Control Fan
Home Security/Automation System
Remote Control Toys
Remote Control for Industrial Use
PT2272 V3.7
-1-
June, 2008
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
Remote Control Decoder
PT2272
BLOCK DIAGRAM
A0
A1
A2
A3
A4
A5
A6/D5
A7/D4
A8/D3
A9/D2
A10/D1
A11/D0
System
Timing
OSC1
OSC2
OSC
Tri-State
Address
Data Detect
Control
Logic
Output
Logic
Computer
Logic
DIN
Data
Detect
Sync
Detect
VT
PT2272 V3.7
-2-
June, 2008
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
Remote Control Decoder
PT2272
PIN CONFIGURATION
18 PINS
A0
A1
A2
A3
A4
A5
A6
A7
VSS
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
VCC
VT
OSC1
OSC2
DIN
A11
A10
A9
A8
A0
A1
A2
A3
A4
A5
A6
A7
VSS
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
VCC
VT
OSC1
OSC2
DIN
D0
D1
A9
A8
PT2272
PT2272A-M2/L2
A0
A1
A2
A3
A4
A5
A6
A7
VSS
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
VCC
VT
OSC1
OSC2
DIN
D0
D1
D2
A8
A0
A1
A2
A3
A4
A5
A6
A7
VSS
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
VCC
VT
OSC1
OSC2
DIN
D0
D1
D2
D3
PT2272-M3/L3
PT2272-M4/L4
A0
A1
A2
A3
A4
A5
A6
D4
VSS
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
VCC
VT
OSC1
OSC2
DIN
D0
D1
D2
D3
A0
A1
A2
A3
A4
A5
D5
D4
VSS
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
VCC
VT
OSC1
OSC2
DIN
D0
D1
D2
D3
PT2272-M5/L5
PT2272 V3.7
-3-
PT2272-M6/L6
June, 2008
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
Remote Control Decoder
PT2272
20 PINS
PT2272 V3.7
-4-
June, 2008
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
Remote Control Decoder
PT2272
PIN DESCRIPTION
Pin Name
A0 ~ A5
I/O
I
Description
Pin No.
18pins 20pins
A6/D5 ~ A11/D0
I/O
DIN
OSC 1
OSC 2
VT
VCC
VSS
NC
I
I
O
O
-
-
-
Code Address Pin Nos. 0 ~ 5.
These six tri-state pins are detected by PT2272 to
1~6
1~6
determine the encoded waveform bit 0 ~ bit 5.
Each pin can be set to “0”, “1”, or “f” (floating).
Code Address Pin Nos. 6 ~ 11/Data Pin Nos. 5 ~ 0.
These six pins are used as higher address input
bits or data output pins depending on the version
(type) of PT2272 used.
When used as address inputs, these pins are
tri-state input pins and each pin can be set to “0”,
7~8
7~8
“1”, or “f” (floating).
10 ~ 13 12 ~ 15
When used as output pins, these pins are driven to
VCC if (1) the address decoded from the waveform
that was received matches the address setting at
the address input pins, and (2) the corresponding
data bits received is a “1” bit. Otherwise, they are
driven to VSS.
Data Input Pin.
The encoded waveform received is serially fed to
14
16
PT2272 at this pin.
A resistor connected
Oscillator Pin No.1 between these two pins
15
17
determine the
fundamental frequency of
Oscillator Pin No. 2
16
18
PT2272.
Valid Transmission.
Active High Signal. VT in high state signifies that
17
19
PT2272 receives valid transmission waveform.
Positive Power Supply
18
20
Negative Power Supply
9
9
No Connection
-
10 ~ 11
PT2272 V3.7
-5-
June, 2008
ADI参考电路
