PT2271A PT2271A remote control decoder paired with PT2261A utiliz

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PT2271A PT2271A remote control decoder paired with PT2261A utiliz

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Remote Control Decoder
PT2271A
PT2271A remote control decoder paired with PT2261A utilizing CMOS Technology. bits two-state address pins providing maximum 4096 212) address codes; thereby, drastically reducing code collision unauthorized code scanning possibilities. PT2271A available several options suit every application need variable number data output pins, latch momentary output type.
CMOS Technology Power Consumption Very High Noise Immunity Two-State Code Address Pins Data Pins Wide Range Operating Voltage: Volts Single Resistor Oscillator Latch Momentary Output Type Available Package
Security System Garage Door Controller Remote Control Home Security/Automation System Remote Control Toys Remote Control Industrial
PT2271A
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Revised July 1999
Remote Control Decoder
PT2271A
A6/D5 A7/D4 A8/D3 A9/D2 A10/D1 A11/D0
Two-State Address Data Detect
System Timing
OSC2
Control Logic Compare Logic
Output Logic
Data Detect
Sync Detect
PT2271A
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Revised July 1999
Remote Control Decoder
OSC1 OSC2
PT2271A
OSC1 OSC2
PT2271A
OSC1 OSC2
PT2271A M2/L2
OSC1 OSC2
PT2271A M3/L3
PT2271A M4/L4
OSC1 OSC2
OSC1 OSC2
PT2271A M5/L5
PT2271A M6/L6
PT2271A
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Revised July 1999
Remote Control Decoder
OSC1 OSC2
PT2271A
OSC1 OSC2
PT2271A Pins)
OSC1 OSC2
PT2271A M2/L2 Pins)
OSC1 OSC2
PT2271A M3/L3 Pins)
PT2271A M4/L4 Pins)
OSC1 OSC2
OSC1 OSC2
PT2271A M5/L5 Pins)
PT2271A M6/L6 Pins)
PT2271A
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Revised July 1999
Remote Control Decoder
Name
PT2271A
Pins Pins
Description
Code Address Nos. These two-state pins detected PT2271A determine encoded waveform Each "0", "1". Code Address Nos. 11/Data Nos. These pins used higher address input bits data output pins depending version (type) PT2271A used. When used address inputs, these pins two-state input pins each "0", "1". 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 PT2271A this pin. Oscillator No.1 resistor connected between these pins determine Oscillator fundamental frequency PT2271A. Valid Transmission. Active High Signal. high state signifies that PT2271A receives valid transmission waveform. Positive Power Supply Negative Power Supply Connection
A6/D5 A11/D0
PT2271A
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Revised July 1999
Remote Control Decoder
PT2271A
PT2271A 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, PT2271A drives -(1) data output pin(s) whose corresponding data bit(s) then decoded bit, output high voltage (high state).
Code basic component encoded waveform, classified either (Address/Data) SYNC (Synchronous) Bit.
designated state high state floating. waveform consists pulse cycles. Each pulse cycle oscillating time periods. further details, please refer diagram below:
where Oscillating Clock Period (f=frequency)
PT2271A
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Revised July 1999
Remote Control Decoder
PT2271A
Synchronous Waveform bits long with width pulse. Please refer diagram below:
width bits width Note
group Code Bits called Code Word. Code Word consists bits followed Sync Bit. bits interpreted either address data bits depending PT2271A version used. Please refer diagrams below: PT2271A:
SYNC SYNC SYNC SYNC SYNC SYNC
PT2271A-M2/L2: PT2271A-M3/L3 PT2271A-M4/L4: PT2271A-M5/L5: PT2271A-M6/L6:
Complete Code Word
built-in oscillator circuitry PT2271A allows precision oscillator constructed with only external resistor. PT2271A decode
PT2271A Page Revised July 1999
Remote Control Decoder
PT2271A
correctly waveform that received, oscillator frequency PT2271A must times that transmitting PT2261A. good practice center PT2271A oscillator frequency this window gain best window margin both sides. typical oscillator with various resistor values shown below both PT2261A PT2271A.
Suggested oscillator resistor values shown below. PT2261A PT2271A
Note: Operates when PT2271A's Vcc=5V Operates when PT2271A's Vcc= This means that PT2271A supply voltage lower than Volts, have lower oscillator resistor value both PT2261A PT2271A.
When PT2271A receives transmission code word, initially checks whether this valid transmission. transmission valid, must Complete
PT2271A Page Revised July 1999
Remote Control Decoder
PT2271A
Code Word, Address Bits must match Address Setting Address Pins. After consecutive valid transmissions, PT2271A drives data pins according data bits received, raises high voltage (high state). timings shown following diagram.
ta=8 clock width tb=1 clock width tc=2 code word width
PT2271A uses either latch momentary data output type depending PT2271A version used. latch type (PT2271A-Lx) activates data during
PT2271A Page Revised July 1999
Remote Control Decoder
PT2271A
transmission this data sustained memory until another data inputted entered. momentary type (PT2271A-Mx), other hand, activates data only during transmission. momentary type, data does remain memory after transmission completed. Please refer diagram below:
When Power turned PT2271A activates Stand-By Mode.
PT2271A Page Revised July 1999
Remote Control Decoder
PT2271A
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.
PT2271A
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Revised July 1999
Remote Control Decoder
PT2271A
PT2271A
Page
Revised July 1999
Remote Control Decoder
PT2271A
When Power turned PT2271A 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.
Decoder with Data Output Pins
Application Circuit
PT2271A Page Revised July 1999
Remote Control Decoder
PT2271A
PT2271A Data) Application Circuit
Note: Address "floating", respective Code will "1".
LIMIT
PT2271A Page Revised July 1999
Remote Control Decoder
PARAMETER Supply Voltage Stand-by Current SYMBOL Vcc=12 Volt DIN=0 Volt OSC1=0 Volt DOUT Output (Driving Current) Volt VOH= Volt Volt Volt Volt Volt DOUT Output (Sinking Current) Volt VOH= Volt Volt Volt Volt Volt Voltage Input Voltage Input Vcc=12V Vcc=12V 0.7Vcc CONDITION MIN. TYP.
PT2271A
MAX. UNIT Volt
0.3Vcc
Volt Volt
Package:
PT2271A Page Revised July 1999
Remote Control Decoder
Part PT2271A (-S18) PT2271A-L2 (-S18) PT2271A-M2 (-S18) PT2271A-L3 (-S18) PT2271A-M3 (-S18) PT2271A-L4 (-S18) PT2271A-M4 (-S18) PT2271A-L5 (-S18) PT2271A-M5 (-S18) PT2271A-L6 (-S18) PT2271A-M6 (-S18) Data Bit(s) None Output Type Latch Momentary Latch Momentary Latch Momentary Latch Momentary Latch Momentary
PT2271A
Package (SO) (SO) (SO) (SO) (SO) (SO) (SO) (SO) (SO) (SO) (SO)
20-Pin Package
Part PT2271A-S PT2271A-L2S PT2271A-M2S PT2271A-L3S PT2271A-M3S PT2271A-L4S PT2271A-M4S PT2271A-L5S PT2271A-M5S PT2271A-L6S PT2271A-M6S Data Bit(s) None Output Type Latch Momentary Latch Momentary Latch Momentary Latch Momentary Latch Momentary Package
Note: (Valid Transmission)
PT2271A
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Revised July 1999
Remote Control Decoder
PT2271A
2271A
Package: PDIP, Pins (can omitted) Small Outline, Pins Small Outline, Pins Data Bits: Data (can omitted) Data Bits Data Bits Data Bits Data Bits Data Bits Data Bits Data Output Type: Latch Type Momentary Type Number Prefix
PT2271A
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Revised July 1999

PT2271A PT2271A remote control decoder paired with PT2261A utiliz

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