PT2283A/B Programmable Rolling Code Encoder IC DESCRIPTION PT2283A/B is a programmable rolling code encoder IC utilizing CMOS Technology specially designed for remote control applications. It supports up to 24-bit of programmable address codes, 4 data bits and 16-bit programmable rolling code. A total of 65,536 rolling code combinations as well as power saving feature is also provided. PT2283A/B encodes the programmed codes into a coded waveform suitable for RF modulation. Pin assignments and application circuit are optimized for easy PCB Layout and cost saving advantage. FEATURES • • • • • • • • • • • • CMOS technology Low standby current <1μA Least external components High noise immunity Wide range of operating voltage: 2.2V ~ 15V Wide range of operating temperature: -40 ~ 85℃ Up to 24 address codes Up to 4 data bits Up to 240 output code combinations Power saving feature Available programming by customer Available in 8-pin, SOP APPLICATIONS • • • • • Burglar alarm system Car security system Car/Garage door controller Home/Office security system Personal alarm system BLOCK DIAGRAM Tel: 886-66296288‧Fax: 886-29174598‧ http://www.princeton.com.tw‧2F, No. 233-1, Baociao Rd., Sindian Dist., New Taipei City 23145, Taiwan PT2283A/B APPLICATION CIRCUIT 1 APPLICATION CIRCUIT 2 V1.1 2 March 2013 PT2283A/B ORDER INFORMATION Part Number PT2283AP-S PT2283BP-S Package Type 8-Pin, SOP, 150mil 8-Pin, SOP, 150mil Top Code PT2283AP-S PT2283BP-S Address Code Programmed Programmed PIN CONFIGURATION PIN DESCRIPTION PT2283A Pin Name I/O OSCI VCC GND TXD K0~K3 I I I Pin Name I/O VCC VSS DOUT D3~D0 OSC I I I Description Oscillation input pin Power supply Negative Power supply Data output pin Data input pins Pin No. 1 2 3 4 5~8 PT2283B V1.1 Description Power supply Negative Power supply Data output pin Data input pins Oscillation input pin 3 Pin No. 1 2 3 4~7 8 March 2013 PT2283A/B FUNCTION DESCRIPTION CODE WORD The DOUT Code Word consist of a Start Bit, Phase Bit, Rolling Code Bits, Address Bits and Address/Data Bits. Please refer to the diagrams below. S0 P0 Start Bit Phase Bit R0 ……. R15 A0 16 Rolling Code Bits ……. A23 24 Address Bits AD0 ……. AD3 4 Address Data Bits START BIT The Start Bit is designated as S0 and is always set to “1”. PHASE CODE BITS The Phase Code Bit is designated as P0. P0 is always set to “0”. ROLLING CODE BITS The Rolling Code Bits, namely: R0 to R15 are programmable. ADDRESS BITS The Address Bits, namely: A0 to A 23 may be programmed to either “0” or “1”. DATA BITS The Data Bits, namely AD0 to AD3 may be set by the date input pins D0~D3(K3~K0). Date Bits can reflect which date input pins are pressed. DOUT TRANSFER SIGNAL The PT2283A/B DOUT Waveform is given below. It must be noted however that a Preamble and Header are transmitted before the Code Word in the following manner depending on the bonding option. V1.1 4 March 2013 PT2283A/B ADDRESS/DATA BIT WAVEFORM An Address/Data Bit can be designated as either Bit “0” or “1” if it is in High or Low State respectively. One bit waveform consists of one pulse cycle and each pulse cycle has 128 oscillating time periods. For further details, please refer to the diagram below: where the oscillating time period, α=1/f and (f is the oscillation frequency) As you can see in the diagram above, Bit “0” consist of a “LOW” Pulse for 96α(where α=oscillating time period) then changes to a “High“ Pulse for 32α. Likewise, for Bit “1”, the “Low” Pulse for 32α is followed by “High” Pulse for 96α. PT2283A/B DOUT WAVEFORM Note: D0~D3 means that at least pressing one or more pins of D0~D3(K3~K0) every time would make IC working. POWER SAVING FEATURE PT2283A/B continuously transmits the code for 64 cycle of 46-bit. After 64 cycle, the code transmission stops. The power consumption is therefore reduced. V1.1 5 March 2013 PT2283A/B SINGLE RESISTOR OSCILLATOR The built-in oscillator circuit of PT2283A/B allows precision oscillator to be constructed by connecting an external resistor (Rosc) to the OSC Pin. The typical oscillator frequency with the various resistor values for PT2283A/B is given below. V1.1 6 March 2013 PT2283A/B ABSOLUTE MAXIMUM RATINGS Parameter Operating voltage Input voltage Operating temperature Storage temperature Symbol VCC VIN Topr Tstg Ratings -0.3~ 16 VSS-0.3 ~ VCC+0.3 -40 ~ +85 -40 ~ +150 Unit V V ℃ ℃ DC ELECTRICAL CHARACTERISTICS (Unless otherwise specified, Ta=25℃, VCC=12V) Parameter Symbol Operating voltage VCC Standby current ISB Operating current IOP DOUT output drive current DOUT output sink current IOH IOL “High” level input voltage VIH “Low” level input voltage VIL Pull low resistor RPL V1.1 Conditions VCC=15V, OSC=0V, Other pin to floating VCC=15V VCC=10V VOH=8V VCC=6V VOH=4V VCC=3V VOH=2.2V VCC=10V VOH=8V VCC=6V VOH=4V VCC=3V VOH=2.2V VCC=10V VCC=6V VCC=10V VCC=6V VCC=10V, VI=5V VCC=6V, VI=3V 7 Min. 2.2 Typ. - Max. 15 Unit V - - 1 μA - - 0.8 mA - - -7 - - -4 - - -0.9 20 - - 10 - - 2.5 - - 0.7VCC 0.7VCC 0 0 - 540 540 VCC VCC 0.3VCC 0.3VCC - mA mA V V KΩ March 2013 PT2283A/B PACKAGE INFORMATION 8-PIN, SOP, 150MIL Symbol A A1 A2 b c e D E E1 L θ Min. 1.35 0.08 1.20 0.33 0.17 Nom. 1.60 0.15 1.40 1.27 BSC 4.90 6.00 3.90 0.60 - 4.70 5.80 3.70 0.38 0° Max. 1.77 0.28 1.65 0.51 0.26 5.10 6.20 4.10 1.27 8° Notes: 1. Refer to JEDEC MS-012 AA 2. All dimensions are in millimeter. V1.1 8 March 2013 PT2283A/B IMPORTANT NOTICE Princeton Technology Corporation (PTC) reserves the right to make corrections, modifications, enhancements, improvements, and other changes to its products and to discontinue any product without notice at any time. PTC cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a PTC product. No circuit patent licenses are implied. Princeton Technology Corp. 2F, 233-1, Baociao Road, Sindian Dist., New Taipei City 23145, Taiwan Tel: 886-2-66296288 Fax: 886-2-29174598 http://www.princeton.com.tw V1.1 9 March 2013