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Remote Control Encoder
PT2260
DESCRIPTION
PT2260 is a remote control encoder paired with either PT2270 or PT2272 utilizing CMOS Technology. It encodes data and address pins into a serial coded waveform suitable for RF modulation. PT2260 has a maximum of 10 bits tri-state address pins providing up to 59,049 (or 310) address codes; thereby, drastically reducing any code collision and unauthorized code scanning possibilities. PT2260 is one of the first generation of Encoder/Decoder ICs that utilizes the unique PTC Technology. When paired with PT2270, this encoder/decoder (PT2260/PT2270) pair can operate at very wide temperature range (see Features). Thus, this very important feature enables your Encoder/Decoder to operate under the worst environmental condition.
FEATURES
* * * * * * * * * High performance CMOS technology Low power consumption Very high noise immunity Wide operating temperature range: -40 ~ 85 8 or 10 Tri-State code address pins 2 or 4 data pins Wider range of operating voltage: 1.8 ~ 10.0V Single resistor oscillator Least external components
APPLICATIONS
* * * * Home/Car security system Garage door controller Remote fan controller Remote control toys
PT2260 V1.4
-1-
April, 2006
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Remote Control Encoder
PT2260
BLOCK DIAGRAM
A0 A1 A2 A3
A4
System Timing
OSC
OSC
A5 A6 A7 A8/D3 A9/D2 D1 D0
Address/ Data
Control Logic
Code Generation
DOUT
PT2260 V1.4
-2-
April, 2006
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Remote Control Encoder
PT2260
PIN CONFIGURATION
A0 A1 A2 A3 A4 A5 A6 A7 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 P T2260-R4 VC C DOUT OSC D0 D1 D2 D3 VS S A0 A1 A2 A3 A4 A5 A6 A7 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 P T2260-R2 VC C DOUT OSC D0 D1 A9 A8 VS S
PT2260 V1.4
-3-
April, 2006
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Remote Control Encoder
PT2260
PIN CONFIGURATION
Pin Name A0 ~ A7 I/O I Description Code Address Pin Nos. 0 ~ 7 These eight tri-state pins are detected by PT2260 to determine the encoded waveform bit 0 ~ bit 7. Each bit can be set to "0", "1", or "f" (floating). Code Address Pin No. 8 ~ 9/Data Pin No. 3 ~ 2. These two tri-state pins are detected by PT2260 to determine the encoded waveform bit 8 ~ bit 9. When these pins are used as address pins (as in PT2260-R2), they can be set to "0", "1", or "f" (floating). When these pins are used as data pins (as in PT2260-R4), they can only be set to "0" or "1". Data Pin No. 1/0. These pins can only be set to "0" or "1" Oscillator Pin A resistor connected between the Osc Pin and the Vcc determines the fundamental frequency of the PT2260 Data Output Pin. The encoded waveform is serially outputted to this pin. When PT2260 is not transmitting, DOUT outputs low (Vss) voltage Positive Power Supply Negative Power Supply Pin No. 1~8
A8/D3 ~ A9/D2
I/PL*
10 ~ 11
D1, D0 OSC
I/PL I
12, 13 14
DOUT Vcc Vss
O
15 16 9
Note: PL -- Pull-low Resistor is connected internally PL* -- If those two pins are used as Data Pins (PT2260-R2), pull-low resistor is connected internally; otherwise, no pull-low resistor is connected.
PT2260 V1.4
-4-
April, 2006
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Remote Control Encoder
PT2260
FUNCTION DESCRIPTION
PT2260 encodes the code address and data set at A0 ~ A7, A8/D3, A9/D2, D1 and D0 into a special waveform and outputs it to the DOUT when any of the data pins is tied to high. This waveform is fed to the RF modulator for transmission. The transmitted radio frequency is received by the RF demodulator and reshaped into the special waveform. PT2270 (or 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 512 oscillating clock periods. For further details, please refer to the diagram below:
O SC 1 b it = 1 0 24 B it " 0 " B it " 1 " 3 8 4 B it " f" Flo a t ing 1 2 8
1 2 8
where: =Oscillating Clock Period 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 b it w id t h = 1 28 4 b its w idt h = 4 0 96
Note: 1 bit=1024
PT2260 V1.4 -5April, 2006
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Remote Control Encoder CODE WORD
PT2260
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 ~ A7, A8/D3, A9/D2, D1 and D0 pins at the time of transmission. When the Data Type of PT2260 is used, the address bits will decrease accordingly. For example: In the 4-Data Type where the address has eight (8) bits, the transmitting format is: 8 Address Bits 4 Data Bits Sync. bit
PT2260 has a maximum of ten (10) Address Bits. The following diagram shows the code bits with their corresponding pins.
A0 A1 A2 A3 A4 A5 A6 A7 A8/D3 A9/D2 D1 A0 SYNC. BIT
One Complete Code Word
2 Data: 4 Data:
A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 D1 D0 Sync Bit A0 A1 A2 A3 A4 A5 A6 A7 D3 D2 D1 D0 Sync Bit
The Code Bits A0 ~ A7, A8/D3, A9/D2, D1 and D0 are determined by the states set at these 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. When PT2260 detects "1" on any of the Data pins, it outputs a Code Word at DOUT. If the Data Pin is still in high state ("1") the time the Code Word transmission ends, PT2260 outputs the same Code Word. Please refer to the diagram below:
DATA PIN
DOUT
1 Co d e Wo r d
1 Co d e Wo r d
1 Co d e Wo r d 1 Co d e Wo r d
PT2260 V1.4
-6-
April, 2006
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Remote Control Encoder SINGLE OSCILLATOR
PT2260
The built-in oscillator circuitry of PT2260 allows a precision oscillator to be constructed by connecting an external resistor between OSC and Vcc pins. For PT2270 (or PT2272) to decode correctly the received waveform, the oscillator frequency of PT2270 (or PT2272) must be 1/16 ~ 4 (or 1/16 ~ 1/4) times that of the transmitting PT2260. The typical oscillator frequency with various resistor values for PT2260, PT2270, and PT2272 are shown below: Encoder (PT2260) OSC Frequency Decoder (PT2270) OSC Frequency
180
500
160 140 Frequency(KHz) 120 100 80 60 40
OSC Resistor = 510 K Ohms OSC Resistor = 1.0 M Ohms OSC Resistor = 1.2 M Ohms OSC Resistor = 2.2 M Ohms
Frequency(KHz)
400 300 250 200 100 1 2 3 4 5 6 7 8 9 10 11 R=820 K R=1 M R=2 M
20 0 0 5 10 Voltage(Vcc) 15
Voltage(V)
Decoder (PT2272) OSC Frequency
1000
R = 100 K (KHz) 100 R = 240 K R = 510 K R=1M 10 3 6 9 Voltage(V) 12 15 R=2M
Suggested Oscillator resistor values are shown below. PT2260 820K 1M 2M PT2272 510K 620K 1.2M PT2270 1M 1.2M 2.2M
PT2260 V1.4
-7-
April, 2006
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Remote Control Encoder
PT2260
OPERATION FLOWCHART
Power On
Stand-by Mode
No
Data Pin(s) in HIGH State
Yes 1 Word of Address/Data Transmitted
No
Data Pin(s) still in HIGH State
Yes
PT2260 V1.4
-8-
April, 2006
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Remote Control Encoder
PT2260
ABSOLUTE MAXIMUM RATINGS
Parameter Supply voltage Input voltage Output voltage Maximum power dissipation Operating temperature Storage temperature Symbol Vcc VI VO Pa Topr Tstg Conditions Ratings -0.3 ~ 10.0 -0.3 ~ Vcc+0.3 -0.3 ~ Vcc+0.3 500 -40 ~ +85 -65 ~ +150 Unit V V V mW
Vcc=10V
DC ELECTRICAL CHARACTERISTICS
Parameter Supply voltage Stand-by current DOUT output driving current DOUT output sinking current Operation current Symbol Vcc Isb IOH IOL Iop Test Conditions Vcc=5V, OSC stops All input pins open Vcc=3V, VOH=1.5V Vcc=10V, VOH=5 V Vcc=3V, VOL=1.5V Vcc=10V, VOL=5V Vcc=1.8V Vcc=6.0V Vcc=10V Min. 1.8 0.2 2.5 20 4.6 24 0.01 0.50 1.60 Typ. 0.5 Max. 10 0.8 Unit V A mA mA mA
PT2260 V1.4
-9-
April, 2006
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Remote Control Encoder
PT2260
APPLICATION CIRCUIT
V cc
10 H
5p
5p
82 0K 47 K
16 15 14 13 12 11 10
9
PT22 60- R4
1 2 3 4 5 6 7 8
UHF Band 4-Data Transmitter Circuit is recommended.
PT2260 V1.4
- 10 -
April, 2006
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Remote Control Encoder
PT2260
ORDER INFORMATION
Valid Part Number PT2260-D PT2260-R2 PT2260-R4 PT2260-R2S PT2260-R4S Notes: 1. R: RF Application. 2. 2: 2 Data Pins; 4: 4 Data Pins. Package Type 16 Pins, DIP, 300mil 16 Pins, DIP, 300mil 16 Pins, DIP, 300mil 16 Pins, SOP, 150mil 16 Pins, SOP, 150mil Top Code PT2260-D PT2260-R2 PT2260-R4 PT2260-R2S PT2260-R4S
PT2260 V1.4
- 11 -
April, 2006
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Remote Control Encoder
PT2260
PACKAGE INFORMATION
16 PINS, DIP, 300MIL
PT2260 V1.4
- 12 -
April, 2006
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Remote Control Encoder
Symbol A A1 A2 b b1 b2 b3 c c1 D D1 E E1 e eA eB eC L Min. 0.015 0.115 0.014 0.014 0.045 0.030 0.008 0.008 0.780 0.005 0.300 0.240 0.000 0.115 Nom. 0.130 0.018 0.018 0.060 0.039 0.010 0.010 0.790 0.310 0.250 0.100 BSC. 0.300 BSC. 0.130 Max. 0.210 0.195 0.022 0.020 0.070 0.045 0.014 0.011 0.800 0.325 0.280 0.430 0.060 0.150
PT2260
Notes: 1. All dimensions are in INCHES. 2. Dimensioning and tolerancing per ANSI Y14.5M-1982. 3. Dimensions "A", "A1" and "L" are measured with the 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-. "eB" and "eC" are measured at the lead tips with the loads unconstrained. 6. "N" is the number of terminal positions. (N=16) 7. Pointed or rounded lead tips are preferred to ease insertion. 8. "b2" and "b3" maximum dimensions are not include dambar protrusions. Dambar protrusions shall not exceed 0.010 inch (0.25 mm). 9. Distance between leads including Dambar protrusions to be 0.005 inch minimum. 10. Datum plane -H- coincident with the bottom of lead, where lead exits body. 11. Refer to JEDEC MS-001 Variation AB. JEDEC is the trademark of JEDEC SOLID STATE TECHNOLOGY ASSOCIATION.
PT2260 V1.4
- 13 -
April, 2006
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Remote Control Encoder
PT2260
16 PINS, SOP, 150MIL
PT2260 V1.4
- 14 -
April, 2006
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
Remote Control Encoder
PT2260
PT2260 V1.4
- 15 -
April, 2006
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
Remote Control Encoder
Symbol A A1 A2 b b1 c c1 D E E1 e L L1 L2 R R1 h 1 2 Min. 1.35 0.10 1.25 0.31 0.28 0.17 0.17 Typ. 9.90 BSC. 6.00 BSC. 3.90 BSC. 1.27 BSC. 1.04 REF. 0.25 BSC. Max. 1.75 0.25 1.65 0.51 0.48 0.25 0.23
PT2260
0.40 0.07 0.07 0.25 0 5 0
1.27 0.50 8 15 -
Notes: 1. Dimensioning and tolerancing per ANSI Y 14.5M-1994 2. Controlling Dimension: MILLIMETERS. 3. Dimension D does not include mold flash protrusions or gate burrs. Mold flash, protrusions or gate burrs shall not exceed 0.15 mm (0.006 in) per end. Dimension E1 does not include interlead flash or protrusion. Interlead flash or protrusion shall not exceed 0.25mm per side. D and E1 dimensions are determined at datum H. 4. The package top may be smaller than the package bottom. Dimensions D and E1 are determined at the outermost extremes of the plastic body exclusive of mold flash, tie bar burrs, gate burrs and interlead flash, but including any mismatch between the top and bottom of the plastic body. 5. Datums A & B to be determined at datum H. 6. N is the number of terminal positions. (N=16) 7. The dimensions apply to the flat section of the lead between 0.10 to 0.25mm from the lead tip. 8. Dimension "b" does not include dambar protrusion. Allowable dambar protrusion shall be 0.10mm total in excess of the "b" dimension at maximum material condition. The dambar cannot be located on the lower radius of the foot. 9. This chamfer feature is optional. If it is not present, then a pin 1 identifier must be located within the index area indicated. 10. Refer to JEDEC MS-012, Variation AC. JEDEC is the registered trademark of JEDEC SOLID STATE TECHNOLOGY ASSOCIATION.
PT2260 V1.4 - 16 April, 2006

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