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Remote Control Encoder
PT2262
DESCRIPTION
PT2262 is a remote control encoder paired with PT2272 utilizing CMOS Technology. It encodes data and address pins into a serial coded waveform suitable for RF or IR modulation. PT2262 has a maximum of 12 bits of tri-state address pins providing up to 531,441 (or 312) address codes; thereby, drastically reducing any code collision and unauthorized code scanning possibilities.
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
PT2262 V3.8
-1-
September, 2008
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
Remote Control Encoder
PT2262
BLOCK DIAGRAM
A0 A1 A2 A3
A4
System Timing
OSC1 OSC OSC2
A5 A6/D5 A7/D4 A8/D3 A9/D2 A10/D1 A11/D0
Address
C ontrol Logic
/TE
Code Generation
DOUT
PIN CONFIGURATION
A0 A1 A2 A3 A4 A5 A6/D5 A7/D4 VS S 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 PT 2262 P T2262-IR P T2262-S18 VC C DOUT OSC2 OSC1 /TE A11/D0 A10/D1 A9/D2 A8/D3 A0 A1 A2 A3 A4 A5 A6/D5 A7/D4 VS S NC 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 VC C DOUT OSC2 OSC1 /TE A11/D0 A10/D1 A9/D2 A8/D3 NC
PT 2262S PT 2262-IRS
PT2262 V3.8
-2-
September, 2008
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Remote Control Encoder
PT2262
PIN DESCRIPTION
Pin Name A0 ~ A5 I/O I Description Code Address Pin Nos.0 ~ 5 These six tri-state pins are detected by PT2262 to 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 tri-state pins are detected by PT2262 to determine the encoded waveform bit 6 ~ bit 11. When these pins are used as address pins, they can be set to "0", "1", or "f" (floating). When these pins are used as data pins, they can be set only to "0" or "1". Transmission Enable. Active Low Signal. PT2262 outputs the encoded waveform to DOUT when this pin is pulled to low. A resistor connected Oscillator Pin No.1 between these two pins determine the fundamental Oscillator Pin No.2 frequency of the PT2262. Data Output Pin. The encoded waveform is serially outputted to this pin. When PT2262 is not transmitting, DOUT outputs low (Vss) voltage. Positive Power Supply Negative Power Supply Pin No. 18 Pins 20 Pins 1~6 1~6
A6/D5, A7/D4 A8/D3 ~ A11/D0
I
7, 8 10 ~ 13
7, 8 12 ~ 15
/TE OSC1 OSC2 DOUT Vcc Vss
I O I O -
14 15 16 17 18 9
16 17 18 19 20 9
PT2262 V3.8
-3-
September, 2008
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
Remote Control Encoder
PT2262
FUNCTIONAL DESCRIPTION
PT2262 encodes the code address and data set at A0 ~ A5 and A6/D5 ~ A11/D0 into a special waveform and outputs it to the DOUT when TE is pulled to "0" (Low State). This waveform is fed to either the RF modulator or the IR transmitter for transmission. The transmitted radio frequency or infrared ray is received by the RF demodulator or IR receiver and reshaped to the special waveform. PT2272 is then used to decode the waveform and set the corresponding output pin(s). Thus completing a remote control encoding and decoding function.
RF OPERATION
CODE BITS
A Code Bit is the basic component of the encoded waveform, and can be classified as either an AD (Address/Data) Bit or a SYNC (Synchronous) Bit. Address/Data (AD) Bit Waveform An AD Bit can be designated as Bit "0", "1" or "f" if it is in low, high or floating state respectively. One bit waveform consists of 2 pulse cycles. Each pulse cycle has 16 oscillating time periods. For further details, please refer to the diagram below:
O SC 1 b it = 3 2 B it " 0 " B it " 1 " 12 B it " f" Flo a t ing w h e re : = O s c illa t in g C loc k P e rio d 4 4
PT2262 V3.8
-4-
September, 2008
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Remote Control Encoder
PT2262
Synchronous (Sync.) Bit Waveform The Synchronous Bit Waveform is 4 bits long with 1/8 bit width pulse. Please refer to the diagram below:
1/8 bit width = 4 4 bits width = 128 Note: 1 bit = 32
CODE WORD
A group of Code Bits is called a Code Word. A Code Word consists of 12 AD bits followed by one Sync Bit. The 12 AD bits are determined by the corresponding states of A0 ~ A5 and A6/D5 ~ A11/D0 pins at the time of transmission. When Data Type of PT2262 is used, the address bits will decrease accordingly. For example: In the 3 Data Type where the address has nine (9) bits, the transmitting format is: 9 Address Bits 3 Data Bits Sync. bit
PT2262 / PT2272 has a maximum of twelve (12) Address Bits including the six (6) Address/Data bits. The following diagram shows the code bits with their corresponding pins.
A0 A1 A2 A3 A4 A5 A6/D5 A7/D4 A8/D3 A9/D2 A10/D1 A11/A0 SYNC. BIT
One Complete Code Word
0 Data: 1 Data: 2 Data 3 Data 4 Data 5 Data 6 Data
A0 A0 A0 A0 A0 A0 A0
A1 A1 A1 A1 A1 A1 A1
A2 A2 A2 A2 A2 A2 A2
A3 A3 A3 A3 A3 A3 A3
A4 A4 A4 A4 A4 A4 A4
A5 A5 A5 A5 A5 A5 A5
A6 A6 A6 A6 A6 A6 D5
A7 A7 A7 A7 A7 D4 D4
A8 A8 A8 A8 D3 D3 D3
A9 A9 A9 D2 D2 D2 D2
A10 A10 D1 D1 D1 D1 D1
A11 D0 D0 D0 D0 D0 D0
Sync Bit Sync Bit Sync.Bit Sync.Bit Sync.Bit Sync.Bit Sync.Bit
The Code Bits A0 ~ A5 and A6/D5 ~ A11/D0 are determined by the states of A0 ~ A5 and A6/D5 ~ A11/D0 pins. For example, when the A0 (Pin No. 1) is set to "1" (Vcc), the Code Bit A0 is synthesized as "1" bit. In the same manner, when it (A0 Pin) is set to "0" (Vss) or left floating, the Code Bit A0 is synthesized as a "0" or "f" bit respectively.
PT2262 V3.8
-5-
September, 2008
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Remote Control Encoder CODE FRAME
PT2262
A Code Frame consists of four (4) continuous Code Words. When PT2262 detects "0" on the /TE (meaning, the /TE is active "low"), it outputs a Code Frame at DOUT. If /TE is still active at the time the Code Frame transmission ends, T2262 outputs another Code Frame. It should be noted that the Code Frame is synthesized at the time of transmission.
/ TE o n e f r a me ( = 4 w o r d) DOUT o n e f r a me o n e f r a me
SIGNAL RESISTOR OSCILLATOR
The built-in oscillator circuitry of PT2262 allows a precision oscillator to be constructed by connecting an external resistor between OSC1 and OSC2 pins. For PT2272 to decode correctly the received waveform, the oscillator frequency of PT2272 must be 2.5 ~ 8 times that of transmitting PT2262. The typical oscillator frequency with various resistor values for both PT2262 and PT2272 are shown below: Encoder OSC Frequency
100 R = 510 K R=1M R=2M 10 (KHz) R = 3.3 M R = 4.7 M
(KHz) 100 R = 100 K R = 240 K R = 510 K R=1M 10 R=2M 3 6 9 Voltage(V) 12 15 1000
Decoder OSC Frequency
1 3 6 9 12 15 Voltage(V)
Suggested oscillator resistor values are shown below. PT2262 4.7 M 3.3 M 1.2 M Note: * -- Operates when PT2272's Vcc=5V to 15V ** -- Operates when PT2272's Vcc=3V to 15V This means that if PT2272 supply voltage is lower than 5V, you need to use a lower oscillator resistor value for both PT2262 and PT2272. PT2272 820 K* 680 K* 200 K**
PT2262 V3.8
-6-
September, 2008
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Remote Control Encoder
PT2262
IR OPERATION
In the IR Type of Operation, the functions are similar to the above descriptions except for the output waveform that has a carrier frequency of 38KHz. Details are as follows:
CODE BITS
The Code Bits are further modulated with a 38KHz carrier frequency and can be "0", "1" or "f" bit. Their waveforms are shown in the diagram below.
OSC 0 1 f Sync 20 620 20 60
160
Note : = 2 clock lengths
CODE WORD
A Code Word is made up of code bits and the format is the same as that of the RF Code Word.
CODE FRAME
Likewise, a Code Frame is made up of Code Words and the format is the same as that of RF Type of Operation.
OSCILLATOR
The Oscillator Frequency for the IR Type of Operation is twice the carrier frequency. Thus, the oscillator frequency should be kept at 76 KHz. A 430K ~ 560K oscillator resistor between OSC 1 and OSC 2 pins is recommended. It should be noted that the carrier is a 50% duty cycle frequency.
PT2262 V3.8
-7-
September, 2008
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Remote Control Encoder OPERATION FLOW CHART
Power On
PT2262
Stand-by Mode
No
/TE Enable
Yes
Yes
4 Words of Address/Data Transmitted Yes No
/TE Still Enable
Yes
PT2262 V3.8
-8-
September, 2008
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Remote Control Encoder
PT2262
ABSOLUTE MAXIMUM RATING
Parameter Supply Voltage Input Voltage Output Voltage Maximum Power Dissipation Operating Temperature Storage Temperature Symbol Vcc VI VO Pa Topr Tstg Condition Rating -0.3 ~ 16.0 -0.3 ~ Vcc+0.3 -0.3 ~ Vcc+0.3 300 -40 ~ +85 -65 ~ 150 Unit V V V mW
Vcc = 12V
DC ELECTRICAL CHARACTERISTICS
Parameter Supply Voltage Stand-by Current Symbol Vcc ISB Test Condition Vcc = 12V OSC2 = 12V A0 ~ A11 Open Vcc = 5V VOH = 3V Vcc = 8V VOH = 4V Vcc = 12V VOH = 6V Vcc = 5V, VOL=3V Vcc = 8V VOL = 4V Vcc = 12V VOL = 6V Min. 4 Typ. 0.1 -3 -6 -10 2 5 9 Max. 15 1 Unit V A mA mA mA mA mA mA
DOUT Output Driving Current
IOH
DOUT Output Sinking Current
IOL
PT2262 V3.8
-9-
September, 2008
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Remote Control Encoder
PT2262
APPLICATION CIRCUIT
UHF BAND 4 DATA TRANSMITTER CIRCUIT IS RECOMMENDED
PT2262 V3.8
- 10 -
September, 2008
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Remote Control Encoder
PT2262
UHF BAND ADDRESS-ONLY (ZERO DATA) TRANSMITTER CIRCUIT IS RECOMMENDED
PT2262 V3.8
- 11 -
September, 2008
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Remote Control Encoder
PT2262
UHF BAND ADDRESS-ONLY (ZERO DATA) ZERO-STAND-BY TRANSMITTER CIRCUIT IS RECOMMENDED.
PT2262 V3.8
- 12 -
September, 2008
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Remote Control Encoder
PT2262
INFRARED RAY 6-DATA CIRCUIT. ADJUST ROSC TO GET 38KHZ CARRIER PULSE AT DOUT PIN IS RECOMMENDED.
PT2262 V3.8
- 13 -
September, 2008
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Remote Control Encoder
PT2262
ORDERING INFORMATION
Valid Part Number PT2262-D PT2262-IR PT2262-S18 PT2262S PT2262-IRS Package Type 18 Pins, DIP, 300mil 18 Pins, DIP, 300mil 18 Pins, SOP, 300mil 20 Pins, SOP, 300mil 20 Pins, SOP, 300mil Top ode PT2262-D PT2262-IR PT2262-S18 PT2262-S PT2262-IRS
PT2262 V3.8
- 14 -
September, 2008
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Remote Control Encoder
PT2262
PACKAGE INFORMATION
18 PINS, DIP, 300MIL
PT2262 V3.8
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September, 2008
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Remote Control Encoder
Symbol A A1 A2 b b2 b3 c c1 D D1 E E1 e eA eB eC L Min. 0.150 0.115 0.014 0.045 0.03 0.008 0.008 0.880 0.005 0.300 0.240 Nom. 0.130 0.018 0.060 0.039 0.010 0.010 0.900 0.310 0.250 0.100 BAS. 0.300 BAS. 0.130 Max. 0.210 0.195 0.022 0.070 0.045 0.014 0.011 0.920 0.325 0.280
PT2262
0.000 0.115
0.430 0.600 0.150
Notes: 1. All dimensioning are in INCHES. 2. Dimensioning and tolerancing per ANSI Y14.5M-1982. 3. Dimension"A","A1"and "L" are measured with package seated in JEDEC Seating Plane Gauge GS-3. 4. "D", "D1" and "E1" dimensions do not include mold flash or protrusions. Mold flash or protrusions shall not exceed 0.010 inch. 5. "E" and "eA" measured with the leads constrained to be perpendicular to datum-c- . 6. "eB" and "eC" are measured at the lead tips with the leads unconstrained. 7. "N" is the number of terminal position (N=18). 8. Pointed or rounded lead tips are preferred to ease insertion. 9. "b2" and "b3" maximum dimensions are not include dambar protrusions. Damber protrusions shall not exceed 0.010 inch (0.25mm) 10. Distance between leads including Damber protrusions to be 0.005 inch minimum. 11. Datum plane -H- coincident with the bottom of lead, where lead exits body. 12. Refer to JEDEC MS-001, Variation AC JEDEC is the trademark of JEDEC SOLID STATE TECHNOLOGY ASSOCIATION.
PT2262 V3.8
- 16 -
September, 2008
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Remote Control Encoder
PT2262
18 PINS, SOP, 300MIL
Symbol A A1 B C D E e H h L
Min. 2.35 0.10 0.33 0.23 11.35 7.40 10.00 0.25 0.40 0
Nom. 1.27 BAS. -
Max. 2.65 0.30 0.51 0.32 11.75 7.60 10.65 0.75 1.27 8
PT2262 V3.8
- 17 -
September, 2008
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Remote Control Encoder
PT2262
Notes: 1. Dimensioning and tolerancing per ANSI Y14.5-1982. 2. Dimension "D" does not include mold flash, protrusions or gate burrs. Mold Flash. protrusion or gate burrs shall not exceed 0.15mm (0.006 in) per side. 3. Dimension "E" does not include interlead flash or protrusions. Interlead flash or protrusions shall not exceed 0.25mm (0.010 in) per side. 4. The chamfer on the body is optional. It is not present, a visual index feature must be located within the crosshatched area. 5. "L" is the length of the terminal for soldering to substrate. 6. "N" is the number of terminal positions. (N=18) 7. The lead width "B" as measured 0.36mm (0.014 in) or greater above the seating plane, shall not exceed a maximum value of 0.61mm (0.24 in) 8. Controlling dimension: MILLIMETER. 9. Refer to JEDEC MS-013 Variation AB. JEDEC is the trademark of JEDEC SOLID STATE TECHNOLOGY ASSOCIATION.
PT2262 V3.8
- 18 -
September, 2008
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Remote Control Encoder
PT2262
20 PINS, SOP, 300 MIL
Symbol A A1 B C D E e H h L
Min. 2.35 0.10 0.33 0.23 12.60 7.40 10.00 0.25 0.40 0
Nom. 1.27 BSC. -
Max. 2.65 0.30 0.51 0.32 13.00 7.60 10.65 0.75 1.27 8
PT2262 V3.8
- 19 -
September, 2008
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
Remote Control Encoder
PT2262
Notes: 1. Dimensioning and tolerancing per ANSI Y14.5M-1982. 2. Dimension "D" does not include mold flash, protrusions or gate burrs. Mold Flash, protrusion or gate burrs shall not exceed 0.15 mm (0.006 in) per side. 3. Dimension "E" does not include interlead flash or protrusions. Interlead flash or protrusions shall not exceed 0.25 mm (0.010 in) per side. 4. The chamfer on the body is optional. It is not present, a visual index feature must be located within the crosshatched area. 5. "L" is the length of the terminal for soldering to a substrate. 6. N is the number of the terminal positions (N=20) 7. The lead width "B" as measured 0.36 mm (0.014 in) or greater above the seating plane, shall not exceed a maximum value of 0.61 mm (0.24 in). 8. Controlling dimension: MILLIMETER. 9. Refer to JEDEC MS-013, Variation AC. JEDEC is the trademark of JEDEC SOLID STATE TECHNOLOGY ASSOCIATION.
PT2262 V3.8
- 20 -
September, 2008

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