unisonic technologies co., ltd rct2e cmos ic www.unisonic.com.tw 1 of 6 copyright ? 2015 unisonic technologies co., ltd. qw-r502-027.d encoder for remote controller with five functions ? description the utc rct2e can be used with the decoder utc rcr2c to provide a complete control functi ons 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 cont rolling 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). sop-8 dip-14 ? ordering information ordering number lead free halogen free package packing rct2el-d14-t RCT2EG-D14-T dip-14 tube - rct2eg-s08-r sop-8 tape reel (1) t: tube, r: tape reel (2) d14: dip-14, s08: sop-8 (3) l: lead free, g: halogen free and lead free rct2el-d14-t (1)packing type (2)package type (3)green package
rct2e cmos ic unisonic technologies co., ltd 2 of 6 www.unisonic.com.tw qw-r502-027.d ? marking dip-14 sop-8 ? 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 dip-14 1 2 3 4 5 6 7 8 rightb gnd vdd so nc osci osco pc sop-8 ? pin description pin no. pin name function 1 rightb the rightward function will be select ed 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 select ed when this pin is connected to gnd. 6 turbob the turbo function will be select ed 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 functi on 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
rct2e cmos ic unisonic technologies co., ltd 3 of 6 www.unisonic.com.tw qw-r502-027.d ? 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 t opr -10 ~ 60 c storage temperature t stg -25 ~ 125 c ? electrical characteristics (v dd =4.5v, fosc=116~140khz, t a =25c, 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 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 stand by current i standby unload 10 a oscillator frequency tolerance f tolerance utc rcr2c f osc =128khz -20 +20 %
rct2e cmos ic unisonic technologies co., ltd 4 of 6 www.unisonic.com.tw qw-r502-027.d ? typical application circuit transmitter (f osc = 116 ~140 khz) osco osci rightb leftb 1 2 3 4 5 6 7 u1 nc gnd backb turbo b sc so v dd pc n c 9 10 11 12 13 14 8 d1 3.8v 104 c6 r1 200k r2 330 r3 12 0 k crystal q1 c945 c7 47 f forwb r7 6.8k 9v l1 4.7 h c1 47p 47 f c3 c4 104 47 p c2 47 p c8 r5 35 k r6 100 q2 c945 c5 47p l2 2.7h l3 c9 100p c10 10p r4 100 antenna utc rct2 e
rct2e cmos ic unisonic technologies co., ltd 5 of 6 www.unisonic.com.tw qw-r502-027.d ? infrared application circuit transmitter (f osc = 114 khz) ? testing circuit the oscillator frequency is 116 ~140khz turbob sc forwardb + 100 f utc rct2e osco osci rightb leftb 123 4 56 7 nc gnd backwareb so v dd pc nc 9 10 11 12 13 14 8 1 23 4 5 6 7 8 9 10 11 12 13 14 15 16 v dd vi1 vo2 vi 2 gnd si osci right lx backward forward turbo vo 1 osco left mod utc rcr2c 200k 300k
rct2e cmos ic unisonic technologies co., ltd 6 of 6 www.unisonic.com.tw qw-r502-027.d 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.
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