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PDF PT2272A-M0S Data sheet ( Hoja de datos )
| Número de pieza | PT2272A-M0S | |
| Descripción | Remote Control Decoder | |
| Fabricantes | Princeton Technology Corp | |
| Logotipo |  |
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Remote Control Decoder
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
PT2272
DESCRIPTION
PT2272 is a remote control decoder paired with PT2262 utilizing CMOS Technology. It has 12 bits 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: varai ble 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
• Car Security System
• Garage Door Controller
• Remote Control Fan
• Home Security/Automation System
• Remote Control Toys
• Remote Control for Industrial Use
PT2272 V3.6
-1-
July, 2005
http://www.Datasheet4U.com
1 page  
Remote Control Decoder
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
PT2272
PIN DESCRIPTION
Pin Name
A0 ~ A5
A6/D5 ~ A11/D0
DIN I
OSC 1
OSC 2
VT O
VCC
VSS
NC
I/O
Description
Pin No.
18pins 20pins
Code Address Pin Nos. 0 ~ 5.
I
These six tri-state pins are detected by PT2272 to
determine the encoded waveform bit 0 ~ bit 5.
1~6
1~6
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
I/O
tri-state input pins and each pin can be set to “0”,
“1”, or “f” (floating).
When used as output pins, these pins are driven to
7~8
10 ~ 13
7~8
12 ~ 15
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
I Oscillator Pin No.1 between these two pins
15 17
determine the
O
Oscillator Pin No. 2
fundamental frequency of
PT2272.
16 18
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
99
- No Connection
- 10 ~ 11
PT2272 V3.6
-5-
July, 2005
5 Page 
Remote Control Decoder
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
PT2272
OPERATION FLOWCHART
DECODER WITHOUT DATA OUTPUT PIN
1. When Power is turned on, PT2272 activates the Stand-By Mode.
2. It then searches for signals. If there is no signal received, it remains in the Stand-By Mode;
otherwise, the address bits received are compared with the address configuration of the pins.
3. The VT goes high signifying the validation of transmission only when there are two (2) continuous
frames that contain matched address bits; otherwise, VT will not be activated and the Stand-By
Mode remains active.
4. Then, the Address Bits are again checked. Two continuous mismatches of the address bits would
disable the VT and make the Stand-By Mode active; otherwise, the address bits are continuously
checked.
Power ON
Stand-By Mode
No
Signal In?
Yes
Address Bits
Match?
Yes
No
Disable VT
Address Bits
Match?
Yes
No
Activate VT
Yes Address Bits
Still Match?
No
Yes Address Bits No
Still Match?
PT2272 V3.6
- 11 -
July, 2005
11 Page | ||
| Páginas | Total 22 Páginas | |
| PDF Descargar | [ Datasheet PT2272A-M0S.PDF ] | |
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