utc RCT2E cmos ic utc unisonic technologies co., ltd. 1 qw-r502-027,b encoder for remote controller with five functions description the utc RCT2E can be used with the decoder utc rcr2c to provide a complete control functions to the remote-controlled toy. the utc RCT2E is the transmitter. it is provide five function keys to control forward, backward, rightward, leftward and turbo motions. beside, a combination of these five motions can be played. utc RCT2E is built with auto power-off function. when input key is pulled low, utc RCT2E will wake up, sc and so will continuously send out code in rf format (non-carrier) and ir format (carrier). however, when a complete code is sent out and the key is released, utc RCT2E will automatically go into powered-off mode. features * wide and low operating voltage range: 1.8v ~ 5.0v * 5-function remote controller controlling forward/ backward/ turbo/ right/ left. * provide two transmissive interface (rf and ir) for different application. * auto power-off function * few external components needed and oscillator with an external resistor. * low standby current and low operating current. * long distance remote control to 100m in utc RCT2E and utc rcr2c pairing. * typical oscillator frequency: rf: 116 ~ 140khz. ir: 114khz(carrier frequency: 57khz). ir: 76khz(carrier frequency: 38khz). dip-14
utc RCT2E cmos ic utc unisonic technologies co., ltd. 2 qw-r502-027,b pin configuration 1 2 3 4 5 6 7 14 13 12 11 10 9 8 rightb nc gnd backwardb forwardb turbob sc leftb nc osci osco pc v dd so pin description pin no. pin name function 1 rightb the rightward function will be selected when this pin is connected to gnd. 2 nc no connection 3 gnd negative power supply 4 backwardb the backward function will be selected when this pin is connected to gnd. 5 forwardb the forward function will be selected when this pin is connected to gnd. 6 turbob the turbo function will be selected when this pin is connected to gnd. 7 sc output pin of the encoding signal with carrier frequency 8 so output pin of the encoding signal without carrier frequency 9 v dd positive power supply 10 pc power control output pin. when any function key is pulled low, pc will be high logic. 11 osco oscillator output pin 12 osci oscillator input pin 14 leftb the leftward function will be selected when this pin is connected to gnd. block diagram osci osco rightb leftb turbob forwardb backwardb input circuit oscillator timing generator encoding circuit pc so sc output circuit
utc RCT2E cmos ic utc unisonic technologies co., ltd. 3 qw-r502-027,b absolute maximum ratings parameter symbol ratings unit dc supply voltage v dd -0.3 ~ 6.0 v input/output voltage gnd -0.2 ~ v dd +0.2 v operating temperature topr -10 ~ 60 storage temperature tstg -25 ~ 125 electrical characteristics (v dd =4.5v, fosc=116 ~ 140khz, ta=25 , unless otherwise specified.) parameter symbol test conditions min typ max unit supply voltage v dd 1.8 4.5 5.0 v input low voltage v il function input pin 2.3 v stand by current i standby unload 10 a operating current i dd unload 0.6 ma so driving current i drso load=0.7v 6.5 ma sc driving current i drsc load=0.7v 6.5 ma pc driving current i drpc load=0.7v 6.5 ma oscillator frequency tolerance f tolerance utc rcr2c f osc =128khz -20 +20 %
utc RCT2E cmos ic utc unisonic technologies co., ltd. 4 qw-r502-027,b typical application circuit transmitter (f osc = 116 ~ 140 khz) osco osci rightb leftb 1 2 3 4 5 6 7 u1 nc gnd backb turbob sc so v dd pc nc 9 10 11 12 13 14 8 d1 3.8v 104 c6 r1 150k r2 330 r3 120k crystal q1 c945 c7 47f forwb r7 6.8k 9v l1 4.7 h c1 47p 47f c3 c4 104 47p c2 47p c8 r5 35k r6 100 q2 c945 c5 47p l2 2.7 h l3 c9 100p c10 10p r4 100 antenna utc RCT2E
utc RCT2E cmos ic utc unisonic technologies co., ltd. 5 qw-r502-027,b infrared application circuit transmitter (f osc = 114 khz osco osci rightb leftb 1 2 34 5 6 7 nc gnd backwardb turbob sc so v dd pc nc 9 10 11 12 13 14 utc RCT2E 8 forwardb 8050 + 100f dc: 3v f = 114khz 1 ~ 4.7 ? photo diode testing circuit the oscillator frequency is 116 ~ 140khz turbob sc forwardb + 100 f utc RCT2E osco osci rightb leftb 1 23 4567 nc gnd backwareb so v dd pc nc 9 10 11 12 13 14 8 1234 56 7 8 9 10 11 12 13 14 15 16 v dd vi1 vo2 vi2 gnd si osci right lx backward forward turbo vo1 osco left mod utc rcr2c 140k 150k
utc RCT2E cmos ic utc unisonic technologies co., ltd. 6 qw-r502-027,b cob bonding figure chip size: 900 1020 m 2 substrate: v dd unit: m utc assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all utc products described or contained herein. utc products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. no name x y 1 rightb -354.5 -95.5 2 nc -354.5 -231 3 gnd -354.5 -420 4 backwardb -213.5 -420 5 forwardb -78 -420 6 turbob 354 -420 7 sc 354 -115 8 so 354 419.5 9 v dd 209.5 419.5 10 pc 68.5 419.5 11 osco -72.5 419.5 12 osci -213.5 419.5 13 nc -354.5 419.5 14 leftb -354.5 40
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