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tel: 886-2-66296288 fax: 886-2-29174598 url: http://www.princeton.com.tw pt2249a_pt2250a v2.6 - 1 - may, 2007 remote control receiver ic pt2249a_pt2250a description the pt2249a_pt2250a series are infra-red remote control receivers utilizing cmos technology. remote control system can be constructed toget her with the pt2248 remote control encoder. the pt2249a series are packaged in 16 pins dip (pt2249a version is also available in sop package) and are capable of controlling 10 functions while the pt2250a series are packaged in 24 pins dip and are capable of controlling 18 functions. several opti ons, inverting/non-inverting ir signal input and/or dependent/independent cyclic (toggle) outputs, are prov ided to fit different application needs. features ? cmos technology ? low power consumption ? very high noise immunity ? able to output parallel multiple keying signals s ent from the transmitter (p t2249a is able to output up to 5 functions simultaneously while pt2250a is able to output up to 6 functions simultaneously) ? outputs for single pulse, hold pulse and cyclic pulse are provided ? a single terminal type oscillator by means of rc is provided ? code detection circuit prevents interference fr om various types of machines and apparatus ? digital filtering and code checking prevent interference from light s ources such as pl lamp without sacrificing the receiving sensitivity applications ? audio equipment remote control ? television (tv) remote control ? video cassette recorder (vcr) remote control
tel: 886-2-66296288 fax: 886-2-29174598 url: http://www.princeton.com.tw pt2249a_pt2250a v2.6 - 2 - may, 2007 remote control receiver ic pt2249a_pt2250a block diagram
tel: 886-2-66296288 fax: 886-2-29174598 url: http://www.princeton.com.tw pt2249a_pt2250a v2.6 - 3 - may, 2007 remote control receiver ic pt2249a_pt2250a pin configurations
tel: 886-2-66296288 fax: 886-2-29174598 url: http://www.princeton.com.tw pt2249a_pt2250a v2.6 - 4 - may, 2007 remote control receiver ic pt2249a_pt2250a pin description pin no. pin name pt2249a PT2249A-SN pt2249al pt2249ahn pt2250a i/o description vss 1 1 1 - negative power supply rxin 2 2 2 i receiver input. instruction signal with carrier wave eliminated should be inputted to this pin. input signal may be optionally inverted before fed into internal decoding circuit. hp1 ~ hp5 3 ~ 7 3 ~ 7 3 ~ 7 o hp6 - - 8 o hold pulse. as long as proper signal is received, this output is held at ?h? level. (approximately 160ms will be ?0? after key is released.) cp1 - 9 10 o cp2 - 8 9 o cyclic pulse. when receiving signal is inputted, cp1/cp2 is inversed. cp1 output may be optionally governed by (dependent to) the output state of cp2. see functional description for details. sp1 ~ sp3 12 ~ 10 12 ~ 10 20 ~ 18 o sp4 9 - 17 o sp5 8 - 16 o sp6 ~ sp10 - - 15 ~ 11 o single pulse. when the receiving signal is inputted, the active output will be at ?h? level only for a fixed duration of time (approximately 107 msec), then it will return to ?l? level. code1 - - 22 i code2 14 14 21 i code3 13 13 - i tx/rx matching code. transmitter code is compared with a code set at this terminals and if matched, input is accepted. osc 15 15 23 i/o osc input/output. a resistor and a capacitor are in parallel connection between this terminal and vss. vcc 16 16 24 - positive power supply
tel: 886-2-66296288 fax: 886-2-29174598 url: http://www.princeton.com.tw pt2249a_pt2250a v2.6 - 5 - may, 2007 remote control receiver ic pt2249a_pt2250a functional description oscillation circuit timing with transmitter signal and internal operati ng clock are all decided by this oscillator. using cmos technology, the oscillator of pt2248 tr ansmitter is constructed through a combination of a linear amplifier by connecting c and r bet ween the oscillator terminal and vss. notes: 1. r=39k5% 2. c=100pf5% receiving signal input circuit the signal is received by ir receiver module and the wave is infused into the ic. the rxin has a built-in schmitt trigger circuit for shaping received signal waveform to eliminate rounding. ptc has made available various options to suit ir receiving module with positive or negative output. pt2249a series / pt2250a series with ?n? option was specially designed for ir modules with negative output. pt2249a series / pt2250a series without the ?n? option were specially designed for ir receiving modules with positive output. in these two options, ir signals without external inversion can be fed into the rxin directly.
tel: 886-2-66296288 fax: 886-2-29174598 url: http://www.princeton.com.tw pt2249a_pt2250a v2.6 - 6 - may, 2007 remote control receiver ic pt2249a_pt2250a receiving signal check the receiving signal check is used to check 2 cycl e transmitting signals sent from the transmitter to determine if it is a normal signal. first, the data is stored in the 12-bit shift register . then, when the second data is pushed into the shift register, the data is forced out of the shift regist er by one bit where the first data has been stored. the ?pushed out? data and the incoming data are checked to s ee if they match. if there is an error in the receiving signal of the 12-bit data check, the system is reset at that point. conversely, when all receiving data are checked ok, (hp1 ~ hp6 signals) outputs are raised from ?l? level to ?h? level. code comparison to prevent interference with other models: c1, c2, and c3 code bits are provided to check whether the transmitter and receiver codes match. it is only when both codes match that the internal la tch strobe pulse is generated to latch the receiving data. the output is then raised from ?l? level to ?h ? level. if both codes do not match, no latch strobe pulse is generated and the output remains at ?l? level (hps and sps) or unchanged (cps). the code bits used differ depending on the receiver. please refer below. rx pt2248 code pin pt2249a pt2250a t1 (c1 code) diode c1 t2 (c2 code) c2 c2 t3 (c3 code) c3 diode note: where c1, c2, c3 will be ?1? if one diode is connected between code and tn pins; n=1 to 3 in pt2248; otherwise will be set to ?0?.
tel: 886-2-66296288 fax: 886-2-29174598 url: http://www.princeton.com.tw pt2249a_pt2250a v2.6 - 7 - may, 2007 remote control receiver ic pt2249a_pt2250a coding code1, code2 and code3 are internally pulled up to vcc by pull-up resistors. to encode each code bit to ?1?: open the corresponding code pin, or insert a capacitor between code pin and vss. to encode each code bit to ?0?: connect the corresponding code pin to vss. explanation of output types: sp, hp and cp single pulse (sp1~sp10) if there is no error in the receivi ng signal of the 12-bit data check, it will generate a single pulse output.
tel: 886-2-66296288 fax: 886-2-29174598 url: http://www.princeton.com.tw pt2249a_pt2250a v2.6 - 8 - may, 2007 remote control receiver ic pt2249a_pt2250a hold pulse (hp1~hp6) normally, after two matched code words (12-bit per word) transmitted from pt2248 is detected, the latch strobe is generated, thereby producing a latch strobe pulse. this causes an ?h? state output and this output is sustained at ?h? level as long as the continuous signal rece ived. approximately 160ms after the key is released and the continuous signal is stopped, the output is reversed to ?l? level by above the last latch strobe pulse. please refer to the diagram
tel: 886-2-66296288 fax: 886-2-29174598 url: http://www.princeton.com.tw pt2249a_pt2250a v2.6 - 9 - may, 2007 remote control receiver ic pt2249a_pt2250a under abnormal conditions where intolerable interfer ence of any kind would cause the receiver to receive only one matched code word during the last transmission (please refer to the diagram above), then approximately 160ms after the key is released and the hold shot output (continuous signal) is stopped, the output is reversed to ?l? level. under any condition, the hp1 ~ hp6 are able to dr ive simultaneously a maximum of six outputs at ?h? level by the continuous signals s ent from the transmitter. these functions are most applicable for rec-play, rec-pause and cue/review of the tape deck.
tel: 886-2-66296288 fax: 886-2-29174598 url: http://www.princeton.com.tw pt2249a_pt2250a v2.6 - 10 - may, 2007 remote control receiver ic pt2249a_pt2250a cyclic pulse (cp1~cp2) when signal is received, the cyclic pulse output is reversed. this cyclic pulse is used for power on/off, mute, etc. the relationship between cp1 and cp2 (in the pt2249a series) is shown in the diagram below: pt2249al: ? cp1 may not be set to ?h? level when cp2 is in ?h? level. ? cp1 is reset to ?l? level whenever cp2 is set to ?h? level. pt2249ahn: ? cp1 may not be set to "h" level when cp2 or hp1 or hp2 is in "h" level. ? cp1 is reset to "l" level whenever cp2 or hp1 or hp2 is set to "h" level.
tel: 886-2-66296288 fax: 886-2-29174598 url: http://www.princeton.com.tw pt2249a_pt2250a v2.6 - 11 - may, 2007 remote control receiver ic pt2249a_pt2250a code allocation* * note: key no. is of pt2248 pt2248 data bit h s1 s2 d1 d2 d3 d4 d5 d6 key no. t1 t2 t3 k1 k2 k3 k4 k5 k6 function of instruction (pt2249a or pt2250a o/p) 1 1 0 0 1 0 0 0 0 0 continuous signal hp1 2 1 0 0 0 1 0 0 0 0 continuous signal hp2 3 1 0 0 0 0 1 0 0 0 continuous signal hp3 4 1 0 0 0 0 0 1 0 0 continuous signal hp4 5 1 0 0 0 0 0 0 1 0 continuous signal hp5 6 1 0 0 0 0 0 0 0 1 continuous signal hp6 7 0 1 0 1 0 0 0 0 0 single-shot signal sp1 8 0 1 0 0 1 0 0 0 0 single-shot signal sp2 9 0 1 0 0 0 1 0 0 0 single-shot signal sp3 10 0 1 0 0 0 0 1 0 0 single-shot signal sp4 11 0 1 0 0 0 0 0 1 0 single-shot signal sp5 12 0 1 0 0 0 0 0 0 1 single-shot signal sp6 13 0 0 1 1 0 0 0 0 0 single-shot signal sp7 14 0 0 1 0 1 0 0 0 0 single-shot signal sp8 15 0 0 1 0 0 1 0 0 0 single-shot signal sp9 16 0 0 1 0 0 0 1 0 0 single-shot signal sp10 17 0 0 1 0 0 0 0 1 0 cyclic signal cp1 18 0 0 1 0 0 0 0 0 1 cyclic signal cp2 c1 ~ c3 code bits are available in addition to the above data bits for optional code selection. pt2250a can use all keys. pt2249a are able to use key no. 1 ~ 5 and key no. 7 ~ 11. pt2249a/al/ahn can use key no. 1 ~ 5, key no. 7 ~ 9, and key no. 17 ~ 18.
tel: 886-2-66296288 fax: 886-2-29174598 url: http://www.princeton.com.tw pt2249a_pt2250a v2.6 - 12 - may, 2007 remote control receiver ic pt2249a_pt2250a absolute maximum rating (ta=25 ) parameter symbol rating unit supply voltage v cc 5.5 v input/output voltage v in vss-0.5 to vcc+0.5 v power dissipation pd 200 mw operating temperature topr -40 ~ +85 storage temperature tstg -65 ~ +150 note: exceeding the maximum rating may cause permanent damage to devices. electrical characteristics (unless otherwise specified, v cc =5v and ta=25 ) parameter symbol conditions min. typ. max. unit operating supply voltage vcc all function operations 2.3 - 5.0 v operating supply current icc key on without load - - 1.0 ma oscillation frequency fosc vcc=5 v 25 34 41 khz ?h? level i oh vo=4v -1.0 - - ma output current ?l? level i ol vo=1 v 1.0 - - ma pull-up resistor rup 150 300 450 k ? input current i ih v i =5v -1.0 - 1.0 a input circuit threshold voltage v i 2.0 2.5 3.0 v rxin input hysterestic voltage v his - 0.6 - v pt2249/50a - - 200 pt2249al - - 300 stand-by current pt2249ahn i sb rxin=0v osc=5v (all outputs floating) - - 300 a
tel: 886-2-66296288 fax: 886-2-29174598 url: http://www.princeton.com.tw pt2249a_pt2250a v2.6 - 13 - may, 2007 remote control receiver ic pt2249a_pt2250a application circuit
tel: 886-2-66296288 fax: 886-2-29174598 url: http://www.princeton.com.tw pt2249a_pt2250a v2.6 - 14 - may, 2007 remote control receiver ic pt2249a_pt2250a application note: 1. combination of pt2248/pt2249a series code bits a) pt2249a series code bit c1 is internally pulled hi gh and thereby set at a default value of ?1?. thus, pt2248 code bit c1 must be set at ?1?. b) pt2249a series code bits c2 and c3 may be programmed as follows: 1) ?0?, ?0? (this combinat ion is not available with tc9149.) 2) ?0?, ?1? 3) ?1?, ?0? 4) ?1?, ?1? c) to set code bit to ?1? on pt2248, diodes must be connected to code terminal from the t1 ~ t3 terminals. d) to set code bit to ?0? on pt2248, the terminals must be kept floating, except c1 - add one diode. e) the code bits combinations of pt2248 and pt2249a series are shown below: pt2248 pt2249a series c1 c2 c3 c2 c3 1 0 0 0 0 1 0 1 0 1 1 1 0 1 0 1 1 1 1 1 f) example: (refer to example 1 diagram) the following example shows the case when pt 2248 code bits c1=1, c2=1, and c3=0. the code2 pin of the pt2249a series is programmed in floati ng state and code3 pin is c onnected to vss (c2=1, c3=0.) in this way, the pt2249a series can ma tch the c2, c3 code bits of pt2248 and correctly decode the remote commands. example 1 circuit diagram when code bit c2 = 1 and c3 = 0
tel: 886-2-66296288 fax: 886-2-29174598 url: http://www.princeton.com.tw pt2249a_pt2250a v2.6 - 15 - may, 2007 remote control receiver ic pt2249a_pt2250a 2. combination of pt2248/pt2250a series code bits a) pt2250a series code bit c3 is internally pulled hi gh and thereby set at a default value of ?1?. thus, pt2248 code bit c3 must be set at ?1?. b) pt2250a series code bits c2 and c3 may be programmed as follows: 1) ?0?, ?0? (this combinat ion is not available with tc9150.) 2) ?0?, ?1? 3) ?1?, ?0? 4) ?1?, ?1? c) to set code bit to ?1? on pt2248, diodes must be connected to code terminal from the t1 ~ t3 terminals. d) to set code bit to ?0? on pt2248, t he terminals must be kept floating. e) the code bits combinations of pt2248 and pt2250a series are shown below: pt2248 pt2250a series c1 c2 c3 c1 c2 0 0 1 0 0 0 1 1 0 1 1 0 1 1 0 1 1 1 1 1 f) example: (refer to example 2 diagram) the following example shows the case when pt 2248 code bits c1=0, c2=0, and c3=1. the code1 and code2 pins of the pt2250a series are connected to the v ss (c1=0 and c2=0). in this way, the pt2250a or any of its series matches the c1 and c2 code bits of pt2248; thus, the remote commands are correctly decoded. example 2 circuit diagram when code bit c1=0 and c2=0
tel: 886-2-66296288 fax: 886-2-29174598 url: http://www.princeton.com.tw pt2249a_pt2250a v2.6 - 16 - may, 2007 remote control receiver ic pt2249a_pt2250a order information valid part number package type top code pt2249a 16 pins, dip, 300mil pt2249a pt2249ahn 16 pins, dip, 300mil pt2249ahn pt2249al 16 pins, dip, 300mil pt2249al PT2249A-SN 16 pins, sop, 150mil PT2249A-SN pt2250a 24 pins, dip, 600mil pt2250a functions: 1. a ? advanced version 2. n ? inversed rxin input 3. l ? advanced dependent cyclic (toggle) outputs 4. h ? output format same as ?l?, except that when hp1 or hp2 is active, it will clear cp1.
tel: 886-2-66296288 fax: 886-2-29174598 url: http://www.princeton.com.tw pt2249a_pt2250a v2.6 - 17 - may, 2007 remote control receiver ic pt2249a_pt2250a package information 16 pins, sop, 150 mil
tel: 886-2-66296288 fax: 886-2-29174598 url: http://www.princeton.com.tw pt2249a_pt2250a v2.6 - 18 - may, 2007 remote control receiver ic pt2249a_pt2250a
tel: 886-2-66296288 fax: 886-2-29174598 url: http://www.princeton.com.tw pt2249a_pt2250a v2.6 - 19 - may, 2007 remote control receiver ic pt2249a_pt2250a symbol min. typ. max. a 1.35 - 1.75 a1 0.10 - 0.25 a2 1.25 - 1.65 b 0.31 - 0.51 b1 0.28 - 0.48 c 0.17 - 0.25 c1 0.17 - 0.23 d 9.90 bsc. e 6.00 bsc. e1 3.90 bsc. e 1.27 bsc. l 0.40 - 1.27 l1 1.04 ref. l2 0.25 bsc. r 0.07 - - r1 0.07 - h 0.25 - 0.50 0 - 8 1 5 - 15 2 0 - - notes: 1. dimensioning and toleranc ing 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 ex clusive of mold flash, tie bar burrs, gate burrs and interlead flash, but including any mismat ch 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 protrusi on. allowable dambar protrusion shall be 0.10mm total in excess of the ?b? dimension at maxi mum 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 ident ifier must be located within the index area indicated. 10. refer to jedec ms-012, variation ac. jedec is the registered trademark of je dec solid state te chnology association
tel: 886-2-66296288 fax: 886-2-29174598 url: http://www.princeton.com.tw pt2249a_pt2250a v2.6 - 20 - may, 2007 remote control receiver ic pt2249a_pt2250a 16 pins, dip, 300 mil
tel: 886-2-66296288 fax: 886-2-29174598 url: http://www.princeton.com.tw pt2249a_pt2250a v2.6 - 21 - may, 2007 remote control receiver ic pt2249a_pt2250a symbol min. nom. max. a - - 0.210 a1 0.015 - - a2 0.115 0.130 0.195 b 0.014 0.018 0.022 b1 0.014 0.018 0.020 b2 0.045 0.060 0.070 b3 0.030 0.039 0.045 c 0.008 0.010 0.014 c1 0.008 0.010 0.011 d 0.780 0.790 0.800 d1 0.005 - - e 0.300 0.310 0.325 e1 0.240 0.250 0.280 e 0.100 bsc ea 0.300 bsc eb - - 0.430 ec 0.000 - 0.060 l 0.115 0.130 0.150 notes: 1. controlling dimension: inches. 2. dimensioning and toleranc ing 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 cons trained to be perpendicular to datum -c-. 6. eb and ea are measured at the l ead tips with the leads unconstrained. 7. n is the maximum number of terminal positions (n=16). 8. pointed or rounded lead tips ar e preferred to ease insertion. 9. b2 and b3 maximum dimensions do not include dambar protrusions. dambar protrusions shall not exceed 0.010 (0.25mm). 10. variation ab is a full lead package. 11. distance between leads including dambar protrusions to be 0.005 in minimum. 12. datum plane -h- coincident with t he bottom of lead where lead exits body. 13. refer to jedec ms-001 variation ab. jedec is the registered trademark of je dec solid state techno logy association.
tel: 886-2-66296288 fax: 886-2-29174598 url: http://www.princeton.com.tw pt2249a_pt2250a v2.6 - 22 - may, 2007 remote control receiver ic pt2249a_pt2250a 24 pins, dip, 600 mil symbol min. max. a - 0.250 a1 0.015 - a2 0.125 0.195 b 0.014 0.022 b1 0.030 0.070 c 0.008 0.015 d 1.150 1.290 d1 0.005 - e 0.600 0.625 e1 0.485 0.580 e 0.100 bsc ea 0.600 bsc eb - 0.700 l 0.115 0.200
tel: 886-2-66296288 fax: 886-2-29174598 url: http://www.princeton.com.tw pt2249a_pt2250a v2.6 - 23 - may, 2007 remote control receiver ic pt2249a_pt2250a notes: 1. controlling dimensions: inch 2. dimensioning and toleranc ing per ansi y14.5m-1982. 3. dimension a, a1 and l are measured with the package seated in jedec seating plane gauge gs-3 4. d and e1 dimensions, for ceramic packages, in clude allowance for glass overrun and meniscus and lid to base mismatch. 5. d and e1 dimensions for plastic packages, do not in clude mold, flash to protrusions. mold flash or protrusions shall not exceed 0.010 inch (0.25mm) 6. e and ea measured with the leads constrained to be perpendicular to plane t. 7. eb and ec are measured at the lead tips with the leads unconstrai ned. ec must be zero or greater. 8. n is the maximum number of terminal positions. (n=24). 9. refer to jedec ms-011 variation aa. jedec is the registered trademark of je dec solid state techno logy association.

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