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sc9244 hangzhou?silan?microelectronics?co.,ltd ?rev:1.0???????2006.04.24 http:?www.silan.com.cn????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????page?1?of?11 remote?control?transmitter?of?9012?code?format sop-20-300-1.27 sop-24-375-1.27 description sc9244 ? is? an? infrared? remote? control? transmitter? utilizing? cmos technology? specially? designed? for infrared? remote? control? system.? it provides? 16? selectable? system? code,? and? 14? selectable? data? code. the circuit?has?sop20?and?sop24?two? kind?of? package. the? pin? assignments and?application?circuit?are?optimized?for?easy?pcb?layout?and?cost?saving advantage. features *?cmos?technology *?low?power?consumption?(<1 m a) *?system?code?and?data?code?selectable *?internal?38khz?carrier,?used?for?infrared?transmitting applications *?infrared?transmitting?remote?controller *?tv?remote?controller *?video?recorder?remote?controller *?vcd?audio?remote?controller ordering?information device package sc9244? sop-20-300-1.27 SC9244A sop-24-375-1.27 block?diagram
sc9244 hangzhou?silan?microelectronics?co.,ltd ?rev:1.0???????2006.04.24 http:?www.silan.com.cn????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????page?2?of?11 absolute?maximum?rating characteristics symbol ratings unit operating?voltage v dd -0.3 7.0 v input?voltage v in v ss -0.3 v dd +0.3 v operating?temperature t amb -40 85 c storage?temperature t stg -65 150 c dc?electrical?characteristics ? v dd =3.0v10% v ss =0 ? test?conditions characteristics symbol pin conditions min. typ. max. unit high?level?output voltage v oh pa7 pa0 pb7 pb0 irout i load =-0.8ma v dd -0.5 - - v low?level?output voltage v ol pa7 pa0 pb7 pb0 irout i load =0.8ma - 0.1 0.5 v high?level?output driving?current i oh pa7 pa0 pb7 pb0 irout v oh =2v 2 3 - ma low?level?output driving?current i ol pa7 pa0 pb7 pb0 irout v ol =1v 3 5 ma high?level?input voltage v ih pa7 pa0 pb7 pb0 0.7v dd v dd v low?level?input?voltage v il pa7 pa0 pb7 pb0 0 0.2v dd v dynamic?power dissipation i ddd v dd main?oscillator 455khz 0.5 1 ma quiescent?power dissipation i dds v dd oscillator?stops 0.2 1 m a pull-up?resistor r up pa7 pa0 150 200 k w
sc9244 hangzhou?silan?microelectronics?co.,ltd ?rev:1.0???????2006.04.24 http:?www.silan.com.cn????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????page?3?of?11 pin?configuration pin?descriptions pin?no. sop24 sop20 pin?name i/o functions 1 1 osci i oscillator?input?pin 2 2 osco o oscillator?output?pin 3 3 gnd -- ground 4~11 4~11 pb0~pb7 o key?scan?signal?output?pin 12 12 irout o infrared?transmitting?output?pin 15~16 -- pa0~pa1 i key?scan?signal?input?pin,?when?in?sop20?package,?do?not have?these?two?pins 17~20 14~17 pa2~pa5 i key?scan?signal?input?pin 22 18 v dd -- positive?power?supply 23~24 19~20 pa6~pa7 i key?scan?signal?input?pin function?descriptions 1. oscillator?circuit there?is?a?ceramic?oscillator?between?osci?and?osco,?and?a?100pf?capacitor?whose?capacitance?is?455khz between?two?oscillator?pins?and?gnd.?to?reduce?the?power?dissipation,?the?oscillator?circuit?will?work?when?press the?key,?or?else?it?stops.?it?can?generate?38khz?carrier?by?internal?frequency?division. fir=455khz/12=37.92khz duty=1/3
sc9244 hangzhou?silan?microelectronics?co.,ltd ?rev:1.0???????2006.04.24 http:?www.silan.com.cn????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????page?4?of?11 2. code?transmission the?transmitting?code?includes?a?lead?code,?16-bit?system?code,?8-bit?data?code?and?8-bit?b1s?complement?of data?code. the?lead?code?is?composed?of?4.5ms?high?level?and?4.5ms?low?level,?thus?9ms?in?total,? and?it?is?used?as?the leader? for? the? following? codes.? thus,? when? reception? is? configured? by? a?microcomputer,? it? will? time? the? various operations? such? as? decoding.? the? code? uses? the? ppm? (pulse? phase? modulation)? method,? with? ?0?and? ?1? differentiated?by?the?time?between?pulses. 3. remote?output?waveform dout?output?waveform successive?transmission?waveform about?108ms data?transmission?waveform?about 108ms ?about?38ms press the?key data?transmission?waveform 9 ms 17 . 92ms ~ 36ms 27ms b1 s?complement?of key?data?code system?code system?code lead?code key?data?code 0 1 1 1 0 4.5 ms 4.5 ms 9 ms 1. 125ms 2. 25ms 0. 56ms successive?transmission?waveform 4.5 ms 4.5 ms 9 ms 2. 25ms when?s 0 (?system?code?bit 0 )= 0 ,?this?bit?transmits 1 1/3 2/3 38khz carrier?waveform 0. 56ms 0. 56ms when?oscillation?frequency?is?455?khz,?the?output?signal?is?modulated?by?38?khz?of?duty?1/3?(which?is?1/12?of the?carrier?generation?circuit). note :? in? designing? the? firmware? of? the? receiving? and? decoding? circuit,? please? strictly? follow? the? following instructions: 1)? system?codes:?the?same?code?is?transmitted?twice?and?therefore,?and?then?decodes?system?codes?for two?times?and?check?if?they?are?in?agreement?with?each?other. 2)? key?data?codes:?the?key?data?code?and?its?inversed?code?are?always?transmitted?together,?therefore, check?if?they?are?in?agreement?with?each?other.
sc9244 hangzhou?silan?microelectronics?co.,ltd ?rev:1.0???????2006.04.24 http:?www.silan.com.cn????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????page?5?of?11 4. achievement?selection?circuit as? the? following? picture,? s1,? s2,? s3,? and? s4? are? the? selection? bits? of? system? code;? s5,? s6,? s7,? and? s8? are selecting?bits?of?data?code. 5. system?code?table priority s4 s3 s2 s1 system?code 1 0 0 0 0 0eh 2 0 0 0 1 1eh 3 0 0 1 0 2eh 4 0 1 0 0 3eh 5 1 0 0 0 17h 6 0 0 1 1 18h 7 0 1 0 1 19h 8 0 1 1 0 1ah 9 1 0 0 1 1bh 10 1 0 1 0 1ch 11 1 1 0 0 1dh 12 0 1 1 1 1fh 13 1 0 1 1 20h 14 1 1 0 1 21h 15 1 1 1 0 22h 16 1 1 1 1 23h note :?si=1?denotes?press?the?key,?si=0?denotes?open.
sc9244 hangzhou?silan?microelectronics?co.,ltd ?rev:1.0???????2006.04.24 http:?www.silan.com.cn????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????page?6?of?11 6. data?code?table data?code(next?row?shows?the?value?of?s8~s5) no. keyboard 00 01 02 04 08 03 05 06 09 0a 0c 07 0b 0d k1 pb0 00 k2 pb1 01 k3 pb2 02 k4 pb3 03 k5 pb4 04 k6 pb5 05 k7 pb6 06 k8 pa7 pb7 07 k9 pb0 08 k10 pb1 09 k11 pb2 0a k12 pb3 0b k13 pb4 0c k14 pb5 0d k15 pb6 0e k16 pa6 pb7 0f k17 pb0 10 k18 pb1 11 k19 pb2 12 k20 pb3 13 k21 pb4 14 k22 pb5 15 k23 pb6 16 k24 pa5 pb7 17 k25 pb0 18 k26 pb1 19 k27 pb2 1a k28 pb3 1b k29 pb4 1c k30 pb5 1d k31 pb6 1e k32 pa4 pb7 1f (to?be?continued ?
sc9244 hangzhou?silan?microelectronics?co.,ltd ?rev:1.0???????2006.04.24 http:?www.silan.com.cn????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????page?7?of?11 (continued) data?code(next?row?shows?the?value?of?s8~s5) no. keyboard 00 01 02 04 08 03 05 06 09 0a 0c 07 0b 0d k33 pb0? 40 20 30 50 60 70 80 90 a0 b0 c0 d0 e0 f0 k34 pb1? 41 21 31 51 61 71 81 91 a1 b1 c1 d1 e1 f1 k35 pb2? 42 22 32 52 62 72 82 92 a2 b2 c2 d2 e2 f2 k36 pb3? 43 23 33 53 63 73 83 93 a3 b3 c3 d3 e3 f3 k37 pb4? 44 24 34 54 64 74 84 94 a4 b4 c4 d4 e4 f4 k38 pb5? 45 25 35 55 65 75 85 95 a5 b5 c5 d5 e5 f5 k39 pb6? 46 26 36 56 66 76 86 96 a6 b6 c6 d6 e6 f6 k40 pa3 pb7? 47 27 37 57 67 77 87 97 a7 b7 c7 d7 e7 f7 k41 pb0? 48 28 38 58 68 78 88 98 a8 b8 c8 d8 e8 f8 k42 pb1? 49 29 39 59 69 79 89 99 a9 b9 c9 d9 e9 f9 k43 pb2? 4a 2a 3a 5a 6a 7a 8a 9a aa ba ca da ea fa k44 pb3? 4b 2b 3b 5b 6b 7b 8b 9b ab bb cb db eb fb k45 pb4? 4c 2c 3c 5c 6c 7c 8c 9c ac bc cc dc ec? fc k46 pb5? 4d 2d 3d 5d 6d 7d 8d 9d ad bd cd dd ed? fd k47 pb6? 4e 2e 3e 5e 6e 7e 8e 9e ae be ce de? ee fe k48 pa2 pb7? 4f 2f 3f 5f 6f 7f 8f 9f af bf cf df ef ff k49 pb0? 50 30 40 60 70 80 90 a0 b0 c0 d0 e0 f0 00 k50 pb1? 51 31 41 61 71 81 91 a1 b1 c1 d1 e1 f1 01 k51 pb2? 52 32 42 62 72 82 92 a2 b2 c2 d2 e2 f2 02 k52 pb3? 53 33 43 63 73 83 93 a3 b3 c3 d3 e3 f3 03 k53 pb4? 54 34 44 64 74 84 94 a4 b4 c4 d4 e4 f4 04 k54 pb5? 55 35 45 65 75 85 95 a5 b5 c5 d5 e5 f5 05 k55 pb6? 56 36 46 66 76 86 96 a6 b6 c6 d6 e6 f6 06 k56 pa1 pb7? 57 37 47 67 77 87 97 a7 b7 c7 d7 e7 f7 07 k57 pb0? 58 38 48 68 78 88 98 a8 b8 c8 d8 e8 f8 08 k58 pb1? 59 39 49 69 79 89 99 a9 b9 c9 d9 e9 f9 09 k59 pb2? 5a 3a 4a 6a 7a 8a 9a aa ba ca da ea fa 0a k60 pb3? 5b 3b 4b 6b 7b 8b 9b ab bb cb db eb fb 0b k61 pb4? 5c 3c 4c 6c 7c 8c 9c ac bc cc dc ec fc 0c k62 pb5? 5d 3d 4d 6d 7d 8d 9d ad bd cd dd ed fd 0d k63 pb6? 5e 3e 4e 6e 7e 8e 9e ae be ce de ee fe 0e k64 pa0 pb7? 5f 3f 4f 6f 7f 8f 9f af bf cf df ef ff 0f note :?si=1?denotes?press?the?key,?si=0?denotes?open.?the?data?in?the?table?is?all?in?hex.
sc9244 hangzhou?silan?microelectronics?co.,ltd ?rev:1.0???????2006.04.24 http:?www.silan.com.cn????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????page?8?of?11 typical?application?circuit
sc9244 hangzhou?silan?microelectronics?co.,ltd ?rev:1.0???????2006.04.24 http:?www.silan.com.cn????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????page?9?of?11 pcb?wire?layout?schematic note :?the?above?ic?only?use?to?hint,?not?to?specify. panel?layout?notice: *?in?wire?layout,?the?power?filter?capacitor?should?near?to?ic. *?in?wire?layout,?should?avoid?power?line?and?ground?line?too?long. *?recommended?infrared?transmit?unit?and?ic?ground?line?should?layout?separated,?or?overstriking?lines. *?the?emitter?of?triode?connect?1 w ?resistor?at?least.
sc9244 hangzhou?silan?microelectronics?co.,ltd ?rev:1.0???????2006.04.24 http:?www.silan.com.cn????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????page?10?of?11 package?outline sop-20-300-1.27 unit:?mm 12 . 70 0. 25 11 . 43 1. 27 0. 45 2. 25max 0. 15 0. 05 sop-24-375-1.27 unit:?mm 15 . 34 0. 25 13 . 97 1. 27 0. 40 3. 10max 0. 25 0. 05
sc9244 hangzhou?silan?microelectronics?co.,ltd ?rev:1.0???????2006.04.24 http:?www.silan.com.cn????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????page?11?of?11 handling?mos?devices: electrostatic?charges?can?exist?in?many?things.?all?of?our?mos?devices?are?internally?protected?against electrostatic?discharge?but?they?can?be?damaged?if?the?following?precautions?are?not?taken: persons?at?a?work?bench?should?be?earthed?via?a?wrist?strap. equipment?cases?should?be?earthed. ? all?tools?used?during?assembly,?including?soldering?tools?and?solder?baths,?must?be?earthed. mos?devices?should?be?packed?for?dispatch?in?antistatic/conductive?containers.

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