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silan semiconductors SC50560 hangzhou silan microelectronics joint-stock co.,ltd rev: 2.3 2002-03-21 1 infrared remote control transmitter description the SC50560 is a remote control transmitter utilizing cmos technology housed in a 20-pin dip or so package. a 4x8 key matrix and extension bit inputs allow the transmission of up to 256 instructions. the transmission code consists of 16 bits code (8 bits custom code and 8 bits data code) and a leader code. pin assignments and application circuit of SC50560 are optimized for easy pcb layout and cost saving advantage for remote control applications. features * cmos technology * low power consumption * least external components * led power dissipation is less during the transmission of instructions dip-20 sop-20 ordering information SC50560 SC50560s dip-20 package sop-20 package applications pin configuration * audio equipment * television * video cassette recorder * air condition 15 16 14 11 13 2 1 3 5 4 6 7 8 9 10 12 19 20 18 17 vss test sel osci osco cs kio0 ko7 ko6 ko5 ko4 ko3 ko2 ko1 ko0 d out v dd kio1 kio2 kio3 SC50560
silan semiconductors SC50560 hangzhou silan microelectronics joint-stock co.,ltd rev: 2.3 2002-03-21 2 block diagram scan key input scan signal generating circuit output controller timing generator oscillation circuit 9 7 8 10 16 18 17 15 14 13 12 11 19 2 5 4 1 20 kio0 kio1 kio2 kio3 s1 s2 s3 s4 s5 s6 s7 s8 vss vdd 6 code transfer cs data encoder test circuit 3 osco osci test dout sel absolute maximum ratings (tamb=25 c) characteristic symbol value unit supply voltage v cc -0.3 ~ 5.5 v input voltage v in vss-0.3v ~ v dd +0.3v v output voltage v out vss vo v dd v operating temperature topr -20 ~ 70 c storage temperature tstg -40 ~ +125 c electrical characteristics (tamb=25 c, v dd =3.0v,vss=0,unless otherwise specified) parameter symbol test conditions min typ max unit supply voltage v dd fosc =455khz 2.0 3.0 4.0 v operating current i op fosc =455khz 0.12 0.3 ma stand-by current i sb osco =v dd kio0~kio3= v dd test = vss sel = vss 0.1 1 a high level output current (dout) i oh v oh =2v -1.0 -13 ma i ol 0.5 1.2 low level output current (dout, ko0~ko7) i ko0~ko7 v ol =0.9v 4.5 5.3 ma high level input voltage (cs) (kio0~kio3) v ih v dd =3.0v 0.7 v dd v dd v low level input voltage (cs) (kio0~kio3) v il v dd =3.0v 0 0.3v dd v input pull-high resistance (kio0~kio3) r in v dd =3.0v 55 70 85 k ?
silan semiconductors SC50560 hangzhou silan microelectronics joint-stock co.,ltd rev: 2.3 2002-03-21 3 pin description pin no. pin name input/output description 1v ss -- negative power supply 2 test i test pin. this pin is normally connected to vss. 3 sel i select pin for SC50560-001/003. 4 osci i oscillation input pin 5 osco o oscillation output pin 6 cs i code select pin 7~10 kio0~kio3 i/o input/output pins 18~11 ko0~ko7 o scan output pins 19 dout o output pin 20 v dd -- positive power supply functional description SC50560 is capable of transmitting up to 256 different instructions and 8 bits custom codes using a 16-bit pcm code with a leader code. furthermore, oscillation is normally stopped when there is no operating, thereby, lower power dissipation. 1. transmission code SC50560 transmission code consists of a leader code, 8 bits custom code (c0 to c7) followed by a sync. bit and 8 bits data code (d0 to d7) followed another sync. bit. the custom and the data codes are separated by a separator. please refer to the diagram below: c1 c2 c3 c5 c4 c6 leader pulse 8 bits custom code c7 sync d0 d1 d2 d3 d4 d5 d6 d7 sync sync. bit 8 bits data code sync. bit seperator figure 1. SC50560 transmission code format one transmission code word consists of a 19-bit pulse (that is the leader pulse plus the 16 bits code) and the separator. it is transferred in a 63.4ms for as long as the key is depressed. please refer to the diagram below: c0 separator 8.4ms 4.2ms one code word 63.4ms 4.2ms 8bits custom code leader code 8bitsdatacode c1 c2 c3 c4 c5 c6 c7 sync d0 d1 d2 d3 d4 d5 d6 d7 sync figure 2. SC50560 detailed code word format
silan semiconductors SC50560 hangzhou silan microelectronics joint-stock co.,ltd rev: 2.3 2002-03-21 4 leader code the leader code is located at the beginning of the transmission code and is made up of 8.4ms high & 4.2ms low pulse and is modulated in 38khz providing easy identification of the reception code head bit at the receiver. custom code custom code may be selected by connection cs input with scan output (ko0 to ko4). an example of a custom code selection is shown in the diagram below. 6 18 17 16 15 14 cs ko0 ko1 ko2 ko4 ko3 custom code c0 1 c1 0 c2 1 c3 0 c4 1 c5 0 c6 0 c7 0 figure 3. custom code selection example data code d0 to d7 of the transmission code are the data code bits. when cs input and the scan output (ko5 to ko7) are connected, data bits?d5 to d7 becomes the system extended code bits. an example of the extended code bits selection is given in the diagram below: data code d5 d6 d7 sw = off 1 0 0 sw = on 1 0 1 6 cs 18 ko5 17 ko6 16 ko7 figure 4. extended code selection 2. separator the separator demarcates the custom code and the data code. it consists of a 4.2ms low pulse interval and can be determined at the receiver so theat any interference with other remote control system may be avoided. please refer to figure 2.
silan semiconductors SC50560 hangzhou silan microelectronics joint-stock co.,ltd rev: 2.3 2002-03-21 5 3. carrier the carrier of the transmission signal is 38khz and one pulse width is 0.52ms. therefor, with the exception of the leader code, there are twenty 38khz clock in one pulse width. please refer to the diagram below. 0.52ms 8.7 s 26.3 s figure 5. transmission signal carrier diagram 4. key input by connecting the input pins ? ki0 to ki3 and scan output pins ?ko0 to ko7 (also known as the standard keys), a 4x8 key matrix may be formed. likewise, a maximum of 256 instructions may be provided by connecting the input cs with the scan output ?ko0 to ko7 (also known as the extended keys). when two or more standard keys are pressed, the transmission output dout is kept at low and no transmission code is outputted. please refer to the tables below. data key input d0 d1 ki0 0 0 ki1 1 0 ki2 0 1 ki3 1 1 data data scan output d2 d3 d4 cs input d5 d6 d7 ko0 0 0 0 ko5 1 -- -- ko1 1 0 0 ko6 -- 1 -- ko2 0 1 0 ko7 -- -- 1 ko3 110 ko4 001 ko5 101 ko6 011 ko7 111
silan semiconductors SC50560 hangzhou silan microelectronics joint-stock co.,ltd rev: 2.3 2002-03-21 6 5. oscillation circuit the oscillation circuit may be constructed by connected a ceramic resonator between the osci and osco. please refer to the diagram right. when the references signal is set to 455khz the carrier can be set at 38khz. when no key input is pressed, the oscillation circuit is normally stopped, thereby, lower power dissipation. 4 5 osci osco SC50560 figure 6. oscillation circuit 6. code format modes SC50560 code format comes in three modes: 001, 002 and 003. please refer to the diagram below: SC50560 version description minimum number of words transmitted SC50560-001 mode a code format: custom code bit 5--c5=0, sel is connected to v dd 1word SC50560-002 mode a&bcodeformats 3words SC50560-003 mode a code format: custom code bit 5--c5=1, when sel is connected to vss ----- both SC50560-001 and SC50560-002 make use of the same operation when the input from terminal cs and the scan output (ko0 to ko4) are connected to make the custom code selection with the exception of the number of word transmitted. please refer to the table above: mode a the diagram below gives us the transmission code format for mode a. one code word consists of the leader code, 8 bits custom code followed by a sync. bit, separator and 8 bits data code followed by another sync. bit. please refer to the diagram below. c1 c2 c3 c5 c4 c6 leader pulse 8 bits custom code c7 sync d0 d1 d2 d3 d4 d5 d6 d7 sync sync. bit 8 bits data code sync. bit seperator c0 figure 7. mode a code format each code bit may either be ?0? or ?1?. please refer to the diagram below.
silan semiconductors SC50560 hangzhou silan microelectronics joint-stock co.,ltd rev: 2.3 2002-03-21 7 2.1ms 0.52ms 1.05ms bit "0" bit "1" figure 8. mode a bit ?0? & ?1? waveform mode b the diagram below gives us the transmission code format for mode b. under this mode, the custom codes are not selected, therefore the transmission code only consists of the 6 bits data code followed by a sync. bit. please refer to the diagram below: sync d0 d1 d2 d3 d4 d5 data code figure 9. mode b code format a transmission code bit may either be ?0? or ?1?. please refer to the diagram below: 4.2ms 0.52ms 2.1ms bit "0" bit "1" figure 10. mode b bit ?0? & ?1? waveform diagram under mode b, a maximum of 32 different instructions may be provided simply by connecting the inputs ki0 to ki3 with the scan outputs ko0 to ko7, thereby constructing a 4x8 key matrix. when two or more keys are pressed at the same time, the transmission output dout is set to and the no transmission occurs. please refer to the table below. ko0 ko1 ko2 ko3 ko4 ko5 ko6 ko7 ki0 00 04 08 0c 10* 14* 18* 1c* ki1 01 05 09* 0d* 11* 15* 19* 1d* ki2 02 06 0a* 0e* 12* 16* 1a* 1e* ki3 03 07 0b* 0f* 13* 17* 1b* 1f* note: * = output of a five-word transmission code.
silan semiconductors SC50560 hangzhou silan microelectronics joint-stock co.,ltd rev: 2.3 2002-03-21 8 application circuit 1. for 01 and 03 versions 15 16 14 11 13 2 1 3 5 4 6 7 8 9 10 12 19 20 18 17 vss test sel osci osco cs ki0 ko7 ko6 ko5 ko4 ko3 ko2 ko1 ko0 dout v dd ki1 ki2 ki3 SC50560-001 v dd v ss 455 khz 100pf 100pf 270 ir led 1 47 f 3v custom code setting settings for data bits--d5, d6, d7 v dd
silan semiconductors SC50560 hangzhou silan microelectronics joint-stock co.,ltd rev: 2.3 2002-03-21 9 2. extended codes 15 16 14 11 13 2 1 3 5 4 6 7 8 9 10 12 19 20 18 17 vss test sel osci osco cs ki0 ko7 ko6 ko5 ko4 ko3 ko2 ko1 ko0 dout v dd ki1 ki2 ki3 SC50560-001 v dd v ss 455 khz 100pf 100pf 270 ir led 1 47 f 3v extended keys v dd standard keys custom code setting standard code extended code ki0 ki1 ki2 ki3 ki0 ki1 ki2 ki3 ko000010203 ko104050607 ko2 08 09 0a 0f ko3 0c 0d 0e 0b ko410111213 not used ko51415161734353637 ko618191a1b58605a5b ko71c1d1e1f9c8d9e9f
silan semiconductors SC50560 hangzhou silan microelectronics joint-stock co.,ltd rev: 2.3 2002-03-21 10 3. double key operation 15 16 14 11 13 2 1 3 5 4 6 7 8 9 10 12 19 20 18 17 vss test sel osci osco cs ki0 ko7 ko6 ko5 ko4 ko3 ko2 ko1 ko0 dout v dd ki1 ki2 ki3 SC50560-001 v dd v ss 455 khz 100pf 100pf 270 ir led 1 47 f 3v custom code setting v dd double key
silan semiconductors SC50560 hangzhou silan microelectronics joint-stock co.,ltd rev: 2.3 2002-03-21 11 4. no leader code and custom code 15 16 14 11 13 2 1 3 5 4 6 7 8 9 10 12 19 20 18 17 vss test sel osci osco cs ki0 ko7 ko6 ko5 ko4 ko3 ko2 ko1 ko0 dout v dd ki1 ki2 ki3 SC50560-002 455 khz 100pf 100pf 270 ir led 1 47 f 3v v dd d2 setting
silan semiconductors SC50560 hangzhou silan microelectronics joint-stock co.,ltd rev: 2.3 2002-03-21 12 chip topography 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 20 19 18 size: 1.40 x 1.21 mm 2 pad coordinates (unit: m) no. symbol x y no. symbol x y 1 p1 -579.10 -35.50 11 p11 579.00 142.30 2 p2 -579.10 -184.50 12 p12 579.00 291.30 3 p3 -579.10 -333.50 13 p13 579.00 440.30 4 p4 -579.10 -482.50 14 p14 270.80 482.50 5 p5 -141.60 -482.50 15 p15 121.80 482.50 6 p6 8.3 -482.50 16 p16 -27.20 482.50 7 p7 421.60 -482.50 17 p17 -176.20 482.50 8 p8 579.00 -304.70 18 p18 -579.10 411.50 9 p9 579.10 -155.70 19 p19 -579.10 262.50 10 p10 579.10 -6.70 20 p20 -579.10 113.50 note: the original point of the coordinate is the die center.
silan semiconductors SC50560 hangzhou silan microelectronics joint-stock co.,ltd rev: 2.3 2002-03-21 13 pcb wire layout schematic: transmitting tube output ground line the transmitting tube ground line and ic ground line should layout separated or overstriking ground line. the above ic only use to hint, not to specified. note: * 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 resistor at least. * recommended triode use 9014.
silan semiconductors SC50560 hangzhou silan microelectronics joint-stock co.,ltd rev: 2.3 2002-03-21 14 package outline dip-20-300-2.54 unit: mm 2.54 7.62(300) 15 degree 1.27 4.36max 3.00min 0.51min 1.778max 6.60 0.25 26.4 0.3 0.25 0.05 0.46 0.08 sop-20-375-1.27 unit: mm 10.2 0.4 7.6 0.3 9.525(375) 12.7 0.25 11.43 1.27 0.4 0.1 3.1max 0.25 0.05
silan semiconductors SC50560 hangzhou silan microelectronics joint-stock co.,ltd rev: 2.3 2002-03-21 15 attach revision history data rev description page 2000.12.31 2.0 change name of company in page footer 2002.01.04 2.1 delete ?or floating ? in ?6.code format modes? 6 2002.02.28 2.2 modify the ?pin configuration ? modify the ?application circuit? add the ?pcb wire layout schematic? modify the ?package outline? 1 8-11 13 14 2002.03.21 2.3 modify the ?figure3? and ?figure 4? 4

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