PT2272 PT2272 remote control decoder paired with PT2262 utilizing
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Remote Control Decoder
PT2272
PT2272 remote control decoder paired with PT2262 utilizing CMOS Technology. bits tri-state address pins providing maximum 531,441 312) address codes; thereby, drastically reducing code collision unauthorized code scanning possibilities. PT2272 available several options suit every application need: variable number data output pins, latch momentary output type.
FEATURES
CMOS Technology Power Consumption Very High Noise Immunity Tri-State Code Address Pins Data Pins Wide Range Operating Voltage: Single Resistor Oscillator Latch Momentary Output Type Available Package
APPLICATIONS
Security System Garage Door Controller Remote Control Home Security/Automation System Remote Control Toys Remote Control Industrial
PT2272 v3.5
June, 2004
Remote Control Decoder
PT2272
BLOCK DIAGRAM
A6/D5 A7/D4 A8/D3 A9/D2 A10/D1 A11/D0 System Timing OSC1 OSC2
Tri-State Address Data Detect
Control Logic Output Logic Computer Logic
Data Detect
Sync Detect
PT2272 v3.5
June, 2004
Remote Control Decoder
PT2272
CONFIGURATION
PINS
OSC1 OSC2 OSC1 OSC2
PT2272
PT2272A-M2/L2
OSC1 OSC2
OSC1 OSC2
PT2272-M3/L3
PT2272-M4/L4
OSC1 OSC2
OSC1 OSC2
PT2272-M5/L5
PT2272 v3.5
PT2272-M6/L6
June, 2004
Remote Control Decoder
PT2272
PINS
OSC1 OSC2 OSC1 OSC2
PT2272
PT2272A-M2/L2
OSC1 OSC2
OSC1 OSC2
PT2272-M3/L3
PT2272A-M4/L4
OSC1 OSC2
OSC1 OSC2
PT2272-M5/L5
PT2272 v3.5
PT2272A-M6/L6
June, 2004
Remote Control Decoder
PT2272
Name Description 18pins 20pins
A6/D5 A11/D0
Code Address Nos. These tri-state pins detected PT2272 determine encoded waveform Each "0", "1", (floating). Code Address Nos. 11/Data Nos. These pins used higher address input bits data output pins depending version (type) PT2272 used. When used address inputs, these pins tri-state input pins each "0", "1", (floating). When used output pins, these pins driven address decoded from waveform that received matches address setting address input pins, corresponding data bits received bit. Otherwise, they driven VSS. Data Input Pin. encoded waveform received serially PT2272 this pin. resistor connected Oscillator No.1 between these pins determine fundamental frequency Oscillator PT2272. Valid Transmission. Active High Signal. high state signifies that PT2272 receives valid transmission waveform. Positive Power Supply Negative Power Supply Connection
PT2272 v3.5
June, 2004
Remote Control Decoder
PT2272
FUNCTION PT2272 decodes waveform received into pin. Waveform decoded into code word that contains address, data sync bits. decoded address bits compared with address address input pins. both addresses match consecutive code words, PT2272 drives data output pin(s) whose corresponding data bit(s) then decoded bit, output high voltage (high state).
OPERATION
CODE BITS
Code basic component encoded waveform, classified either (Address/Data) SYNC (Synchronous) Bit. Address/Data (AD) Waveform designated "0", "f", low, high floating state respectively. waveform consists pulse cycles. Each pulse cycle oscillating time periods. further details, please refer diagram below:
Floating where: Oscillating Clock Period only available Address
PT2272 v3.5
June, 2004
Remote Control Decoder
Synchronous (Sync.) Waveform
PT2272
Synchronous Waveform bits long with width pulse. Please refer diagram below:
width width Note:
CODE WORD
group Code Bits called Code Word. Code Word consists bits followed Sync Bit. bits interpreted either address data bits depending PT2272 version used. Please refer diagrams below: PT2272:
SYNC
PT2272A-M2/L2: PT2272-M3/L3: PT2272-M4/L4: PT2272-M5/L5: PT2272-M6/L6:
SYNC
SYNC
SYNC
SYNC
SYNC
Complete Code Word
PT2272 v3.5
June, 2004
Remote Control Decoder SINGLE RESISTOR OSCILLATOR
PT2272
built-in oscillator circuitry PT2272 allows precision oscillator constructed with only external resistor. PT2272 decode correctly waveform that received, oscillator frequency PT2272 must times that transmitting PT2262. good practice center PT2272 oscillator frequency this window gain best window margin both sides. typical oscillator with various resistor values shown below both PT2262 PT2272.
Encoder Frequency
R=1M R=2M 1000
Decoder Frequency
R=1M R=2M
LTAG
LTAG
Suggested oscillator resistor values shown below. 2262 Note: Operates when PT2272's VCC=5V Operates when PT2272's VCC= This means that PT2272 supply voltage lower than have lower oscillator resistor value both PT2262 PT2272. 2272
PT2272 v3.5
June, 2004
Remote Control Decoder
PT2272
OPERATION
Type Operation, functions similar above descriptions, except that output waveform carried PT2262-IR frequency KHz. Details follows:
CODE BITS
Code Bits further modulated with carrier frequency "0", bit. Their waveforms shown diagram below.
Sync Note: clock lengths
CODE WORD
Code Word made code bits format same that Code Frame.
CODE FRAME
Likewise, Code Frame made Code Words format same that Type Operation.
OSCILLATOR
PT2262 specially designed infrared remote control applications output waveform carries frequency. carrier frequency data output, oscillator frequency must KHz. resistor connected between OSC1 OSC2 pins PT2262 recommended. Moreover, matching decoder frequency, resistor connected between OSC1 OSC2 pins PT2272 also recommended.
PT2272 v3.5
June, 2004
Remote Control Decoder
PT2272
VALID TRANSMISSION
When PT2272 receives transmission code word, initially checks whether this valid transmission. transmission valid, must Complete Code Word, Address Bits must match Address Setting Address Pins. After consecutive valid transmissions, PT2272 drives data pins according data bits received, raises high voltage (high state). timings shown following diagram.
Sync word Data pins (momentary) clock width clock width code word width Sync
word
LATCH MOMENTARY DATA OUTPUT TYPE PT2272 uses either latch momentary data output type depending PT2272 version used. latch type (PT2272-Lx) activates data during transmission this data sustained memory until another data inputted entered. momentary type (PT2272-Mx), other hand, activates data only during transmission. momentary type, data does remain memory after transmission completed. Please refer diagram below:
DATA WORDS DATA PINS (Momentary) DATA OUTPUT DATA OUTPUT DATA WORDS
DATA PINS (Latch)
DATA OUTPUT
DATA OUTPUT
CODE WORDS WIDTH
PT2272 v3.5
June, 2004
Remote Control Decoder
PT2272
OPERATION FLOWCHART
DECODER WITHOUT DATA OUTPUT
When Power turned PT2272 activates Stand-By Mode. then searches signals. there signal received, remains Stand-By Mode;otherwise, address bits received compared with address configuration pins. goes high signifying validation transmission only when there continuous frames that contain matched address bits; otherwise, will activated Stand-By Mode remains active. Then, Address Bits again checked. continuous mismatches address bits would disable make Stand-By Mode active; otherwise, address bits continuously checked.
Power
Stand-By Mode Disable Signal Address Bits Match?
Address Bits Match? Activate
Address Bits Still Match?
Address Bits Still Match?
PT2272 v3.5
June, 2004
Remote Control Decoder
PT2272
DECODER WITH DATA OUTPUT PINS
When Power turned PT2272 activates Stand-By Mode. then searches signals. there signal received, remains Stand-By Mode;otherwise, address bits compared with address configuration pins. Whenever Address Bits Frame match with that Address Configuration Pin, data bits stored into memory. Also, when this finds continuous identical data having same address bits, data output(s) activated enabled. disabled when there continuous mismatched addresses. momentary type, data output reset; while latch type, data output sustained.
Power
Stand-By Mode
Disable Reset Output Data (For Momentary Type)
Disable Sustain Output Data (For Latch Type)
Signal Address Match? Store Data Bits
Match Previous Data? Address Bits Match? Data Bits Output Activate
Address Bits Still Match?
Address Bits Still Match?
PT2272 v3.5
June, 2004
Remote Control Decoder
PT2272
ABSLOUTE MAXIMUM RATINGS
Parameter Supply Voltage Input Voltage Output Voltage Operating Temperature Storage Temperature Symbol Topr Tstg Rating -0.3 16.0 -0.3 VCC+0.3 -0.3 VCC+0.3 Unit
ELECTRICAL CHARACTERISTICS
Parameter Supply Voltage Stand-by Current Symbol Conditions OSC1 Min. 0.7VCC Typ. Max. 0.3VCC Unit
DOUT Output Driving Current
DOUT Output Sinking Current
Input Voltage Input Voltage
PT2272 v3.5
June, 2004
Remote Control Decoder
PT2272
APPLICATION CIRCUIT
PT2272 DATA) APPLICATION
OSC1 OSC2 Rosc
PT2272
PT2272 DATA) APPLICATION CIRCUIT
OSC1 OSC2
Rosc
PT2272-L4
PT2272 v3.5 June, 2004
Remote Control Decoder
PT2272
PT2272 DATA) APPLICATION CIRCUIT
OSC1 OSC2
Rosc
PT2272-L4
Receiver
PT2272 v3.5
June, 2004
Remote Control Decoder
PT2272
ORDER INFORMATION
Valid Part PT2272A-M2-S18 Valid Part PT2272 PT2272-L2 PT2272-L3 PT2272-L4 PT2272-L5 PT2272-L6 PT2272-M2 PT2272-M3 PT2272-M4 PT2272-M5 PT2272-M6 PT2272A-L2 PT2272A-M2 Valid Part PT2272-S PT2272-L3S PT2272-L4S PT2272-L5S PT2272-L6S PT2272-M2S PT2272-M3S PT2272-M4S PT2272-M5S PT2272-M6S PT2272A-L2S PT2272A-M2S Package Type PINS, Package Type PINS, PINS, PINS, PINS, PINS, PINS, PINS, PINS, PINS, PINS, PINS, PINS, PINS, Package Type PINS, PINS, PINS, PINS, PINS, PINS, PINS, PINS, PINS, PINS, PINS, PINS, Data Bits Data Bits Data Bits Output Type Momentary Output Type Latch Latch Latch Latch Latch Momentary Momentary Momentary Momentary Momentary Latch Momentary Output Type Latch Latch Latch Latch Momentary Momentary Momentary Momentary Momentary Latch Momentary Code PT2272 Code PT2272 PT2272-L2 PT2272-L3 PT2272-L4 PT2272-L5 PT2272-L6 PT2272-M2 PT2272-M3 PT2272-M4 PT2272-M5 PT2272-M6 PT2272A-L2 PT2272A-M2 Code PT2272-S PT2272-L3S PT2272-L4S PT2272-L5S PT2272-L6S PT2272-M2S PT2272-M3S PT2272-M4S PT2272-M5S PT2272-M6S PT2272A-L2S PT2272A-M2S
Note1.: (Valid Transmission) Notes2.: Lead Free [ex. PT2272 (L)] Lead Free mark front date code.
PT2272 v3.5
June, 2004
Remote Control Decoder
PT2272
PACKAGE INFORMATION
PINS (300MIL)
Symbol
Min. 2.35 0.10 0.33 0.23 11.35 7.40 10.00 0.25 0.40
Nom.
Max. 2.65 0.30 0.51 0.32 11.75 7.60 10.65 0.75 1.27
1.27 BASIC
PT2272 v3.5
June, 2004
Remote Control Decoder
PT2272
Notes Dimensioning tolerancing ANSI Y14.5-1982. Dimension does include mold flash, protrusions gate burrs. Mold Flash. protrusion gate burrs shall exceed 0.15mm (0.006 side. Dimension does include interlead flash protrusions. Interlead flash protrusions shall exceed 0.25mm (0.010 side. chamfer body optional. present, visual index feature must located within crosshatched area. length terminal soldering substrate. number terminal positions. (N=18) lead width measured 0.36mm (0.014 greater above seating plane, shall exceed maximum value 0.61mm (0.24 Controlling dimension: MILLIMETER. Refer JEDEC MS-013 Variation JEDEC trademark JEDEC SOLID STATE TECHNOLOGY ASSOCIATION.
PT2272 v3.5
June, 2004
Remote Control Decoder
PT2272
PINS (300MIL)
PT2272 v3.5
June, 2004
Remote Control Decoder
PT2272
Symbol
Min. 0.15 0.115 0.014 0.045 0.03 0.008 0.88 0.005 0.30 0.24
Nom.
Max. 0.21 0.195 0.022 0.07 0.045 0.014 0.92 0.325 0.28
0.13 0.018 0.06 0.039 0.01 0.90 0.31 0.25 BASIC BASIC
0.00 0.115
0.13
0.43 0.60 0.15
Notes: dimensioning INCHES. Dimensioning tolerancing ANSI Y14.5M-1982. Dimension"A","A1"and measured with package seated JEDEC Seating Plane Gauge GS-3. "D", "D1" "E1" dimensions include mold flash protrusions. Mold flash protrusions shall exceed 0.010 inch. "eA" measured with leads constrained perpendicular datum-c- "eB" "eC" measured lead tips with leads unconstrained. number terminal position (N=18). Pointed rounded lead tips preferred ease insertion. "b2" "b3" maximum dimensions include dambar protrusions. Damber protrusions shall exceed 0.010 inch (0.25mm) Distance between leads including Damber protrusions 0.005 inch minimum. Datum plane coincident with bottom lead, where lead exits body. Refer JEDEC MS-001, Variation JEDEC trademark JEDEC SOLID STATE TECHNOLOGY ASSOCIATION.
PT2272 v3.5
June, 2004
Remote Control Decoder
PT2272
20PINS (300 MIL)
Symbol
Min. 2.35 0.10 0.33 0.23 12.60 7.40 10.00 0.25 0.40
Dimensions Millimeter Nom.
Max. 2.65 0.30 0.51 0.32 13.00 7.60 10.65 0.75 1.27
1.27 bsc.
PT2272 v3.5
June, 2004
Remote Control Decoder
PT2272
Notes Dimensioning tolerancing ANSI Y14.5M-1982. Dimension does include mold flash, protrusions gate burrs. Mold Flash, protrusion gate burrs shall exceed 0.15 (0.006 side. Dimension does include interlead flash protrusions. Interlead flash protrusions shall exceed 0.25 (0.010 side. chamfer body optional. present, visual index feature must located within crosshatched area. length terminal soldering substrate. number terminal positions (N=20) lead width measured 0.36 (0.014 greater above seating plane, shall exceed maximum value 0.61 (0.24 in). Controlling dimension: MILLIMETER. Refer JEDEC MS-013, Variation JEDEC trademark JEDEC SOLID STATE TECHNOLOGY ASSOCIATION.
PT2272 v3.5
June, 2004
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