princeton technology corp . tel: 886-2-29162151 fax: 886-2-29174598 url: http://www.princeton.com.tw programmable encoder ic pt2240 pt2240 v 1.4 page 1 revised nov.1999 description pt2240 is programmable encoder utilizing cmos technology specially designed for remote control applications. it has a maximum of 22 address which may be designed by a one-time programmable process. it can support up to 8 data bits and is housed in 8 or 16-pin dip or so package. it encodes address and data codes into a coded waveform suitable for rf modulation. the pin assignments and application circuit are optimized for easy pcb layout and cost saving advantage. furthermore, pt2240?s intrinsic feature of being able to support 2/3/4/6/8 data bits considerably reduces inventory pressures. features ? cmos technology ? low power consumption ? least external components ? high noise immunity ? single resistor oscillator ? operating voltage: 1.8~15 v ? up to 8 data pins ? up to 2 22 address codes ? one-time programmable process ? available in so or dip package ? reduction of inventory pressures applications ? burglar alarm system ? car security system ? car/garage door controller ? home/office security system ? personal alarm system
princeton technology corp . tel: 886-2-29162151 fax: 886-2-29174598 url: http://www.princeton.com.tw programmable encoder ic pt2240 pt2240 v 1.4 page 2 revised nov.1999 pin configurations 1 2 3 4 1 2 3 4 8 7 6 5 8 7 6 5 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 v ss s 1 v pg d 7 d 6 d 5 d 4 pgm s 0 v dd d out osc d 0 /clk d 1 /code d 2 d 3 pt2240 (16 pins) v ss v pg pgm d 1 /code v ss pgm d 1 /code d 2 v dd d out osc d 0 /clk v dd d out osc d 0 /clk pt2240 (8 pins) pt2240-d3 (8 pins) application circuits rf rosc 12v vss s 1 v pg d 7 d 6 d 5 d 4 pgm s 0 v dd d out osc d 0 /clk d 1 /code d 2 d 3 + _ figure 1: pt2240 (8 data) application circuit note: in order that ic protection is assured, please make sure that a diode is connected between the battery and the vdd. if the diode is not connected and the battery polarity was inverted, then the ic will fail.
princeton technology corp . tel: 886-2-29162151 fax: 886-2-29174598 url: http://www.princeton.com.tw programmable encoder ic pt2240 pt2240 v 1.4 page 3 revised nov.1999 vss v pg pgm d 1 /code v dd d out osc d 0 /clk pt2240 (8 pins) rf 12v rosc + _ figure 2: pt2240 (8-pin) application circuit note: in order that ic protection is assured, please make sure that a diode is connected between the battery and the vdd. if the diode is not connected and the battery polarity was inverted, then the ic will fail. vss pgm d 1 /code d 2 v dd d out osc d 0 /clk pt2240-d3 (8 pins) rf 12v rosc + _ note: in order that ic protection is assured, please make sure that a diode is connected between the battery and the vdd. if the diode is not connected and the battery polarity was inverted, then the ic will fail.
princeton technology corp . tel: 886-2-29162151 fax: 886-2-29174598 url: http://www.princeton.com.tw programmable encoder ic pt2240 pt2240 v 1.4 page 4 revised nov.1999 order information valid part number package address codes pt2240-d3 8 pins, dip programmable pt2240p-d3 8 pins, dip programmed pt2240-d3s 8 pins, sop (150 mil) programmable pt2240p-d3s 8 pins, sip (150 mil) programmed pt2240 8 pins, dip programmable pt2240-s 8 pins, sop (150 mil) programmable pt2240p 8 pins, dip programmed pt2240p-s 8 pins, sop (150 mil) programmed PT2240-16 16 pins, dip programmable PT2240-16s 16 pins, sop (150 mil) programmable pt2240p-16 16 pins, dip programmed pt2240p-16s 16 pins, sop (150 mil) programmed
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