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rev. 1.00 1 may 07, 2012 rev. 1.00 pb may 07, 2012 HT62104 infrared remote encoder feature ? o perating voltage: 2 .0v ~ 5.0 v ? eight data key control ? t wo custom codes for product differentiation ? start oscillation after key press for power saving ? led output to indicate transmission status ? d irect 38khz output frequency infrared led modulation ? s ignal gap time: t= 4 192 (1/455khz) 4 16 (1/38khz) C signal gap time: 4t ? low power consumption ? 16-pin dip/nsop package applications ? f an remote control s ? a udio remote control s ? t oy remote control s ? c onsumer products remote control s general description the HT62104 devices are high performance infrared remote control encoders which are manufactured in silicon gate cmos technology. the HT62104 devices support eight data key inputs and an led output to indicate the transmission status. a signal transmission is automatically activated when any key data input lines change status from high to low. the device generates a signal which is composed of a start code, a custom code and a data code and send s the signal to its output pin . this can be provided to an ir (38khz carrier) transmission medium. block diagram encoder output driver timing generator internal rc oscillator data latch vdd vss dout k3 k2 k1 k4 k5 led c1 c2 k7 k6 k8 vss1 vdd1
rev. 1.00 2 may 07, 2012 HT62104 p in assignment pin description pin name type description vdd/vdd1 logic circuit positive power supply. vss logic circuit negative power supply, ground. vss1 ir-led negative power supply c1, c2 i custom code inputs. k1~k8 i remote control key inputs. i nternally connected to pull-high resistors. dout o serial data output. nmos open-drain structure. led o transmission indicator. pmos open-drain structure. approximate internal connections c1,c2 k1 ~ k8 led vss vdd vss1 dout vss vdd r r vdd vss vdd
rev. 1.00 3 may 07, 2012 HT62104 absolute maximum ratings supply voltage v ss -0.3v to v ss +6.5v input voltage v ss -0.3v to v dd +0.3v output voltage v ss -0.3v to v dd +0.3v storage temperature -55c to 150c operating temperature -10c to 70c note: these are stress ratings only. stresses exceeding the range specifed under absolute maximum ratings may cause substantial damage to the device. functional operation of this device at other conditions beyond those listed in the specifcation is not implied and prolonged exposure to extreme conditions may affect device reliability. electrical characteristics ta= 25c symbol parameter test condition min. typ. max. unit vdd condition v dd operating voltage D D 2.0 D 5.0 v i dd operating current 3v no load, c1 and c2 pins foating D 0.6 0.9 ma i stb standby current 3v no load, input pins foating, oscillator stops D 0.1 1.0 a v ih input high voltage (c1~c2, k1~k8) 3v D 2.1 D D v v il input low voltage (c1~c2, k1~k8) 3v D D D 0.9 v r ph1 pull-high resistor (c1~c2) 3v D 25 50 75 k r ph2 pull-high resistor (k1~k8) 3v D 500 900 1500 k i oh led pin output source current 3v v oh = 2.7v -2 D -5 ma i ol dout pin output sink current 3v v ol = 0.6v 300 350 D ma t dw single data bit width 2.0v~ 3.6v ta=25c, load=1k w for dount pin typ. - 1.5% 1.688 typ. + 1.5% ms 0c < ta=25c < 50c, load=1k w for dount pin typ. - 2 .3 % 1.688 typ. + 2.3 % ms
rev. 1.00 4 may 07, 2012 HT62104 functional description the HT62104 infrared remote control encoder pro - vides a means for easy remote control signal encod - ing. as all functions, including the system oscillator, are integrated within the device, the addition of exter - nal switches and an ir led is all that is required to implement a full infrared remote control transmitter function. the device will generate an encoded signal on its out - put pin, dout, composed of a start code, a custom code and a data code. the signal is automatically generated on the dout pin when any data input pin, k1~k8, changes state from high to low. the interna l pull-high resistors keep these data input pins in a normally high condition. the output signal on the dout pin can be interfaced to an external ir led for wireless signal transmission . s ignal generation the device will encode and transmit a start code, a custom code and a data code upon receipt of a trigger signal. the trigger signal is a high to low transition on any of the data input pins, k1~k8. the pins are normally kept at a high level by the internal pull-high resistors. k ey input trigger t he signal transmission is initiated when any of the key data input pins change s state from high to low . i f the pulse width of the trigger signal derived from the key inputs, k1~k8, is less than or equal to 32ms, there will no signal output on the dout pin. i f the pulse width of the trigger signal is greater than 32ms and less than or equal to 4-frame width s , then a frame code repeated 4 times, depending upon which key input is pulled from a high state to a low state, will be generated on the dout pin. i f the triggered signal pulse width is greater than 4-frame width s and less than or equal to 8-frame width s , then a frame code will be generated and repeated 8 times on the dout pin. k1 ~k 8 dout ? 32 ms 32 ms < active ? 4 frame 4 frame < active ? 8 frame frame frame frame frame frame frame frame frame frame frame frame frame note: 1.the key data input low signal pulse width must be greater than a 32ms duration for a full signal transmission, which consists of a specifc repeated frame code, to occur. if the input low signal is less than or equal to 32ms, then no signal will be transmitted. 2.frame indicates a specifc frame code which is determined by the triggering key. f rame format there are four frames that the encoder generates for each available sending trigger. t he frame code contains three felds including a 3-bit start code (110), a 2-bit custom code (c1, c2) and a 7-bit data code. e ach key data input corresponds to a specifc transmission code shown in the following table. f rame code table key start code (s) custom code (c) data code (d) s2 s1 s0 c1 c2 d6 d5 d4 d3 d2 d1 d0 k1 1 1 0 c1 c2 0 0 0 0 0 0 1 k2 1 1 0 c1 c2 0 0 0 0 0 1 0 k3 1 1 0 c1 c2 0 0 0 0 1 0 0 k4 1 1 0 c1 c2 0 0 0 1 0 0 0 k5 1 1 0 c1 c2 0 0 1 0 0 0 0 k6 1 1 0 c1 c2 0 1 0 0 0 0 0 k7 1 1 0 c1 c2 1 0 0 0 0 1 1 k8 1 1 0 c1 c2 1 0 0 0 1 1 0 the c1 and c2 pins are internally connected to pull-high resistors whose status are decided by customers. connecting to gnd represents a 0 while connecting to vdd or keeping in a foating state represents a 1 .
rev. 1.00 5 may 07, 2012 HT62104 frame data format on dout pin ? a o ne frame data format i s shown below . s2 s1 s0 c1 c2 d6 d5 d4 d3 d2 d1 d0 delay time (3 2m s) one frame (1 2 bits ) start code custom coded ata code press key dout ? t he time duration between frame (n) and frame (n+1) is called the signal gap time. t he gap time is counted based on a unit period , denoted as t . khz 455 1 192 4 4 t 1 = = kh z 38 1 16 4 C for the HT62104 device, the signal gap time is 4t. delay time (3 2m s) frame 14 tf rame 2 press key frame 34 tf rame 4 4t release ke y dout s c d s c d s c d s c d gap time gap time gap time carrier o utput waveform t he carrier signal , with a frequency of 38khz , is superimposed onto the output data signal which is used to generate and data 0 and data 1 waveforms . t he carrier signal is shown in the following diagram . 26 .3 s 8. 77 s 38 khz carrier dout pi n bit code w aveform s a s bit s can be designated as either 0 or 1, they must be encoded in a certain way as shown below . bit ?0? bit ?1? t dw 38 khz 3 3 note:1. khz 455 1 192 1 = kh z 38 1 16 2. bit 1 consists of a high pulse for 1 and a 38khz carrier for 3. 3. bit 0 consists of a high pulse for 3 and a 38khz carrier for 1.
rev. 1.00 6 may 07, 2012 HT62104 f rame code transmission f rame code transmission timing w hen a key input trigger occurs, the corresponding frame code will be output on the dout pin and the frame code will be repeated 4 times. a data 1 will also appear on the led pin after the internal rc oscillator starts to oscillate. k1 irc led dout fc 1f c1 fc 1f c1 k1 k1 k1 k1 f osc =4 55 khz <1 ms 32 ms 12 t signal gap time fc 1: key 1 frame code frame code transmission timing sequential key input transmission when key input triggers occurs sequentially, the corresponding frame codes will be a sequential output on the dout pin. the transmission waveform is shown in the following diagram. k1 k2 irc led dout k1 k1 k1 k1 k2 k2 k2 k2 f osc =4 55 khz >3 2m s k2 k2 k2 k2 32 ms 32 ms fc 1 fc 1 fc 1 fc 1 fc 2 fc 2 fc 2 fc 2 fc 2 fc 2 fc 2 fc 2 fc 1: key 1 frame code fc 2: key 2 frame code sequential key input transmission
rev. 1.00 7 may 07, 2012 HT62104 overlapped key input transmission w hen two key input trigger pulses overlap, the time where the second trigger pulse occurs will determine what frame code will be output on the dout pin. if the second trigger pulse occurs during the gap time, the following frame code will be output on the dout pin and will be a combination of the two triggered frame codes. the following diagram shows the transmission waveform. k1 k2 irc led dout k1+k2 k1+k2k 1+k 2 k1 k1 k2 k2 k2 f osc =4 55 khz fc 1 fc 1 fc 2 fc 2 fc 2 fc1 + fc 2 fc1 + fc 2 fc1 + fc 2 gap time fc 1: key 1 frame code . fc 2: key 2 frame code . fc 1+ fc 2: combination of ke y1 and key 2 frame codes . overlap ping key input s occur ring during the gap time if the second available trigger pulse occurs during the frame code transmi ssion duration, the present frame code being transmitted will still be output on the dout pin. here the combination of the two triggered frame codes will be consecutively output. the following diagram indicates the transmission waveform. k1 k2 irc led dout k1+k2k 1+k 2 k1 k1 k2 k2 f osc =4 55 khz fc 1 fc 1 fc 2 fc 2 fc1 + fc 2 fc1 + fc 2 gap time fc 1: key 1 frame code . fc 2: key 2 frame code . fc 1+ fc 2: combination of ke y1 and key 2 frame codes . k1 fc 1 k1+k 2 fc1 + fc 2 overlap ping key input s occur ring during a frame code transmission the same methodology can be applied on the rising transition of any available trigger pulses to see how the frame code changes when overlapp ing key inputs occur.
rev. 1.00 8 may 07, 2012 HT62104 operation f lowchart power on stand- by mode data transmitted yes no yes no any of the key data input pin in low state any of the key data input pin in low state
rev. 1.00 9 may 07, 2012 HT62104 application circuit vdd dout led vdd1 vss1 k8 k7 k6 vss k5 k4 k3 k2 k1 c1 c2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 k1 k2 k3 k4 k5 c 1 c 2 k8 k7 k6 1w ir led ir 333 c - a( q ) HT62104 r1 v ss led v ss1 v ss2 single-point connection for gnd single-point connection for vdd r2 10w 220 mf c1 v dd v dd 1 0.1mf c2 3v figure 1 (see note) vdd dout led vdd 1 vss1 k8 k7 k6 vss k5 k4 k3 k2 k1 c1 c2 k1 k2 k3 k4 k5 k6 k7 k8 3v 330mf led 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 c 1 c 2 1mf 1w ir led HT62104 ir333c-a(q) figure 2 1rwh d surlghv srhu iru wkh 5b/( dd surlghv srhu iru wkh orlf fluflwv kh wr srhu vssolhv wkh p ) srvlwlh whupldo dg wkh srvlwlh whupldo ri wkh edwwhu pvw kdh d vlohsrlw frhfwlr hiruh wkh dd srhu vsso lv frhfwhg wr wkh sl d fdsdflwru p ) pvw iluvw eh frhfwhgforvhwrwkh 66 lv 1 iru wkh 2 gulhu 66 lv 1 iru wkh /( gulhu 66 lv 1 iru wkh orlf fluflwv kh wkuhh 1v wkh hdwlh whupldo ri p ) dg wkh hdwlh whupldo ri wkh edwwhu pvwkdhdvlohsrlwfrhfwlr i klk fuuhw gulh frglwlrv iru 5b/( uhvow l lvwdelolw r rlvh lw lv uhfrpphg wr dgg d uhvlvwru5wrvwdelolvh dg slv kh2 dg.( wudfnvvkrogehnhswdsduwedglvwdfhriplorupruh ul 3 pdidfwuh wkh 2 66 66 dg 66 wudfnv vkrog rw e pdgh vl fduerwudf nv
rev. 1.00 10 may 07, 2012 HT62104 package information note that the package information provided here is for consultation purposes only. as this information may be updated at regular intervals users are reminded to consult the holtek website (http://www.holtek.com.tw/english/ literature/package.pdf) for the latest version of the package information. 16-pin dip (300mil) outline dimensions fig1. full lead packages fig2. 1/2 lead packages ms-001d (see fg1) symbol dimensions in inch min. nom. max. a 0.780 D 0.880 b 0.240 D 0.280 c 0.115 D 0.195 d 0.115 D 0.150 e 0.014 D 0.022 f 0.045 D 0.070 g D 0.100 D h 0.300 D 0.325 i D 0.430 D symbol dimensions in mm min. nom. max. a 19.81 D 22.35 b 6.10 D 7.11 c 2.92 D 4.95 d 2.92 D 3.81 e 0.36 D 0.56 f 1.14 D 1.78 g D 2.54 D h 7.62 D 8.26 i D 10.92 D ms-001d (see fg2) symbol dimensions in inch min. nom. max. a 0.735 D 0.775 b 0.240 D 0.280 c 0.115 D 0.195 d 0.115 D 0.150 e 0.014 D 0.022 f 0.045 D 0.070 g D 0.100 D h 0.300 D 0.325 i D 0.430 D symbol dimensions in mm min. nom. max. a 18.67 D 19.69 b 6.10 D 7.11 c 2.92 D 4.95 d 2.92 D 3.81 e 0.36 D 0.56 f 1.14 D 1.78 g D 2.54 D h 7.62 D 8.26 i D 10.92 D
rev. 1.00 11 may 07, 2012 HT62104 16-pin nsop (150mil) outline dimensions ms-012 symbol dimensions in inch min. nom. max. a 0.228 D 0.244 b 0.150 D 0.157 c 0.012 D 0.020 c 0.386 D 0.402 d D D 0.069 e D 0.050 D f 0.004 D 0.010 g 0.016 D 0.050 h 0.007 D 0.010 0 D 8 symbol dimensions in mm min. nom. max. a 5.79 D 6.20 b 3.81 D 3.99 c 0.30 D 0.51 c 9.80 D 10.21 d D D 1.75 e D 1.27 D f 0.10 D 0.25 g 0.41 D 1.27 h 0.18 D 0.25 0 D 8
rev. 1.00 12 may 07, 2012 HT62104 reel dimensions 16-pin nsop (150mil) symbol description dimensions in mm a reel outer diameter 330.01.0 b reel inner diameter 100.01.5 c spindle hole diameter 13.0 +0.5/-0.2 d key slit width 2.00.5 t1 space between flange 16.8 +0.3/-0.2 t2 reel thickness 22.20.2
rev. 1.00 13 may 07, 2012 HT62104 carrier tape dimensions

16-pin nsop (150mil) symbol description dimensions in mm w carrier tape width 16.00.3 p cavity pitch 8.00.1 e perforation position 1.750.10 f cavity to perforation (width direction) 7.50.1 d perforation diameter 1.55 +0.15/-0.00 d1 cavity hole diameter 1.50 +0.25/-0.00 p0 perforation pitch 4.00.1 p1 cavity to perforation (length direction) 2.00.1 a0 cavity length 6.50.1 b0 cavity width 10.30.1 k0 cavity depth 2.10.1 t carrier tape thickness 0.300.05 c cover tape width 13.30.1
rev. 1.00 14 may 07, 2012 HT62104 holtek semiconductor inc. (headquarters) no.3, creation rd. ii, science park, hsinchu, taiwan tel: 886-3-563-1999 fax: 886-3-563-1189 http://www.holtek.com.tw holtek semiconductor inc. (taipei sales offce) 4f-2, no. 3-2, yuanqu st., nankang software park, taipei 115, taiwan tel: 886-2-2655-7070 fax: 886-2-2655-7373 fax: 886-2-2655-7383 (international sales hotline) holtek semiconductor inc. (shenzhen sales offce) 5f, unit a, productivity building, no.5 gaoxin m 2nd road, nanshan district, shenzhen, china 518057 tel: 86-755-8616-9908, 86-755-8616-9308 fax: 86-755-8616-9722 holtek semiconductor (usa), inc. (north america sales offce) 46729 fremont blvd., fremont, ca 94538, usa tel: 1-510-252-9880 fax: 1-510-252-9885 http://www.holtek.com copyright ? 2012 by holtek semiconductor inc. the information appearing in this data sheet is believed to be accurate at the time of publication. however, holtek assumes no responsibility arising from the use of the specifications described. the applications mentioned herein are used solely for the purpose of illustration and holtek makes no warranty or representation that such applications will be suitable without further modification, nor recommends the use of its products for application that may present a risk to human life due to malfunction or otherwise. holtek's products are not authorized for use as critical components in life support devices or systems. holtek reserves the right to alter its products without prior notifcation. for the most up-to-date information, please visit our web site at http://www.holtek.com.tw.

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