Silan Semiconductors   TX-2B/RX-2B REMOTE CONTROLLER WITH FIVE FUNCTIONS DESCRIPTION DIP-14 The TX-2B/RX-2B is a pair of CMOS LSIs designed for remote TX-2B controlled car applications. The TX-2B/RX-2B has five control keys for controlling the motions (i.e. forward, backward, rightward, leftward and the turbo function ) of the remote controlled car. FEATURES * Wide operating voltage range (VCC=1.5~5.0V) RX-2B * Low stand-by current DIP-16 * Auto-power-off function for TX-2B * Few external components are needed ORDERING INFORMATION Part No. Package TX-2B DIP-14-300-2.54 RX-2B DIP-16-300-2.54 BLOCK DIAGRAM OSCI 12 OSCO 11 RIGHT 1 LEFT 14 TURBO 6 FORWARD 5 BACKWARD 4 FOSC TEST B 13 2 Oscillator Timing Generator 9 VDD 10 PC Latch Circuit Encoding Circuit Logic 8 SO 7 SC 3 GND TRANSMITTER TX-2B Block Diagram HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD Rev: 1.0 1  2002.03.29  Silan Semiconductors  TX-2B/RX-2B BLOCK DIAGRAM OSCI 4 Timing Generator Oscillator OSCO 5 SI 3 VO1 15 VI1 14 13 VDD Decoding Circuit AMP Computer PLA LDB 9 6 RIGHT Control Logic RDB 7 LEFT 8 VI2 16 VO2 1 12 TURBO Latch Circuit 10 BACKWARD 11 FORWARD 2 GND RECEIVER RX-2B Block Diagram PIN CONFIGURATION 14 LEFT VO2 1 16 VI2 TEST 2 13 FOSC GND 2 15 VO1 GND 3 12 OSCI SI 3 14 VI1 ACKWARD 4 11 OSCO OSCI 4 13 VDD FORWARD 5 10 PC OSCO 5 12 TURBO TURBO 6 9 VDD RIGHT 6 11 FORWARD SC 7 8 SO LEFT 7 10 BACKWARD ROB 8 9 LDB RX-2B 1 TX-2B RIGHT HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD Rev: 1.0 2  2002.03.29 Silan Semiconductors   TX-2B/RX-2B ABSOLUTE MAXIMUM RATINGS Characteristic Symbol Value Unit VDD 0.3~5.0 V VIN, VOUT GND-0.3~VDD+0.3 V TOPR -10~65 °C Tstg -25~125 °C Supply Voltage Input / Output Voltage Operating Temperature Storage Temperature ELECTRICAL CHARACTERISTICS 1. TX-2B (VDD=4.0V, Fosc=128KHz, Tamb =25°C, unless otherwise specified.) Characteristic Symbol Min Typ Max Unit VDD 1.5 4.0 5.0 V Operating Current IDD -- -- 2.0 mA Stand-By Current ISTB -- -- 10 µA DC O/P Driving Current Idrive 5 -- -- mA AC O/P Driving Current Idrive 5 -- -- mA AC O/P Frequency Faudio 0.5 -- 1.0 kHz Unit Operating Voltage 2. RX-2B (VDD=4.0V,Fosc=128KHz, Tamb=25°C, unless otherwise specified.) Symbol Min Typ Max Operating Voltage characteristic VDD 1.5 4.0 5.0 V Operating Current IDD -- -- 3.0 mA O/P Driving Current Idrive 1 -- -- mA O/P Sinking Current Isink 1 -- -- mA Ftolerance -20 -- 20 % Effect Decoding Frequency Variation PIN DESCRIPTION 1. TX-2B Pin No. Symbol 1 RIGHT The rightward function will be selected, if this pin is connected to GND Description 2 TEST This pin is used for testing mode 3 GND Negative power supply 4 BACKWARD 5 FORWARD The backward function will be selected, if this pin is connected to GND The forward function will be selected, if this pin is connected to GND (To be continued) HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD Rev: 1.0 3  2002.03.29 Silan Semiconductors   TX-2B/RX-2B (Continued) Pin No. Symbol 6 TURBO Description The turbo function will be selected if this pin is connected to GND 7 SC 8 SO Output pin of the encoding signal with carrier frequency Output pin of the encoding signal without carrier frequency 9 VDD Positive power supply 10 PC Power control output pin 11 OSCO Oscillator output pin 12 OSCI Oscillator input pin 13 FOSC This pin is used for testing mode 14 LEFT The leftward function will be selected, if this pin is connected to GND 2. RX-2B Pin No. Symbol Description 1 VO2 Inverter 2 output pin for power amplify 2 GND Negative power supply 3 SI 4 OSCI Input pin of the encoding signal Oscillator input pin 5 OSCO Oscillator output pin 6 RIGHT Rightward output pin 7 LEFT Leftward output pin 8 ROB Rightward function disable, if this pin is connected to GND Leftward function disable, if this pin is connected to GND 9 LDB 10 BACKWARD 11 FORWARD Forward output pin 12 TURBO TURBO output pin 13 VDD Backward output pin Positive power supply 14 VI1 Inverter 1 input pin for power amplify 15 VO1 Inverter 1 output pin for power amplify 16 VI2 Inverter 2 input pin for power amplify HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD Rev: 1.0 4  2002.03.29 Silan Semiconductors   TX-2B/RX-2B CODE FORMAT 1. ENCODE RULE (A).Bit Format (W1 is used for function codes,W2 for start codes) 1KHz W1 1KHz 50% Duty cycle W2 500Hz 75% Duty cycle (B).Date Format W2 W2 W2 W2 (n) X W1 W2 W2 W2 W2 W2 W2 W2 1 2 3 4 1 2 3 4 W1 W1 W1 W1 W2 (n) X W1 W2 W2 W2 W2  W2 W2 W2 W2 W1 n-th W1 start code n x W1 function code 1 word  Number Of Function Code (N) W1 Function Key 4 Decode Result End Code 10 Forward Forward 16 Forward & Turbo Forward 22 Turbo Turbo 28 Turbo & Forward & Left Forward & Left 34 Turbo & Forward & Right Forward & Right 40 Backward Backward 46 Backward & Right Backward & Right 52 Backward & Left Backward & Left 58 Left Left 64 Right Right HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD Rev: 1.0 5  2002.03.29 Silan Semiconductors   TX-2B/RX-2B 2. ENCODE/DECODE TIMING Any function key Encode output 1st word 2nd word 3rd word 1 2 3 4 5 6 7 8 end code Decode output 9ms 9ms SI (n) W1 8ms 1ms 8ms Decode output T T=17ms+(nW1)x1ms TESTING CIRCUIT (The oscillator frequency of TX-2B, RX-2B is 128KHz, the oscillator resistor is 160KΩ and 250KΩ respectively) 13 12 11 turbo 10 9 8 16 15 14 13 12 11 10 9 6 7 8 F ­ 6 7 1 2 3 4 5 fosc=128kHz left 5 turbo 4 forward 3 backward 2 right left 1 RX-2B right TX-2B 100 VCC=3V 14 backward forward fosc=128kHz HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD Rev: 1.0 6  2002.03.29 Silan Semiconductors   TX-2B/RX-2B TYPICAL APPLICATION CIRCUIT TRANSMITTER VCC ¡ Rosc=500k 14 13 12 11 10 9 8 5 6 7 R.F. SI CIRCUIT TX-2B 4 forward turbo 3 backward 2 right left 1 RECEIVER power switch ­F 16 15 14 13 12 11 10 9 6 7 8 100 RX-2B 4.3V VCC 1 2 3 R.F. CIRCUIT 4 5 ¡ 500k GND HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD Rev: 1.0 7  2002.03.29 Silan Semiconductors   TX-2B/RX-2B INFRARED APPLICATION CIRCUIT TRANSMITTER 100 F DC:3V ­ ¡ 1~4.7 fosc=114kHz 13 12 11 10 9 8 5 6 7 Photo Diode 14 TX-2B 4 Turbo 15 3 Frontwar d Right 16 2 Backw ard Left 1 C8050 RECEIVER DC:5V 14 13 12 11 10 9 100K ¡ RX-2B VDD 100 F ­ OUT 1 2 3 4 5 6 7 8 IR Receiver 1815 fosc=114KHz GND HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD Rev: 1.0 8  2002.03.29 Silan Semiconductors   TX-2B/RX-2B RECOMMENDED APPLICATION CIRCUIT R VDD=9V L 1 14 2 13 3 12 LED 11 203P 220k 390 ­ L1 2.2 H 47P XTAL 27MHz ­ L2 2.2 H ­ L4 6.8 H 151P L3 ¶ F 7T 0.3mm ( ) x 5mm(Core) 68P 10 ¡ 151P Q2 C945 203P 47 ¡ 100 8 ¡ 3.0V 7 ­ F 9 203P 6 100 TURBO 68P Q1 C945 33K 5 103P TX-2B 4 ¡ ¡ ¡ Rosc=160K B 1.5k 3.9MO 390 3 14 4 13 Rosc=250K 222P RX-2B right left 5 12 6 11 7 10 8 9 ­ 100 F /16V Q3 ¡ ¡ R1 C945 1k 330 16 15 ­ VDD1 VDD2 103P 2 1N4148 470 F /16V /16V ¡ 501P 3.3k 1 3.0V ¡ 220­F 203P ¡ ¡ ¡ VDD1=12V,R=330 VDD1=9V,R=220 ¡ 3.3k 104P C4 203P R2 F ­ 4.7 820 C1 102P ¡ ¶ 7T 0.3mm ( ) x 5mm(Core) Q1: C9018,C1815,C380,C382 Q2,Q3,Q4: 5610,C8550,B772 Q5,Q6: C8050,5609,D882 Q7,Q8: B564,C8550,B772 Q9,Q10: D471,C8050,D882 1k ¡ Q4 Q2 ¡ R2 M C945 Q5 3.9M ¡ 180k L2 Q1 104P 3.3k L1 1.1 F ­ C3 18P 4P C2 47P 473P C945 Q6 1kO ¡ R1,R2,R3,R4=80~150 ,are changeable with the VDD1 and VDD2. turbo forward backward R3 ¡ Q7 1k Q8 Q9 473P R4 ¡ 1k M C945 C945 Q10 HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD Rev: 1.0 9  2002.03.29  Silan Semiconductors  TX-2B/RX-2B PACKAGE OUTLINE DIP-14-300-2.54 UNIT: mm 0.05 2.54 6.35 7.62 B 0.25 0.25 B 1.52 B0.3 15 degree 3.00MIN 0.5MIN 4.36MAX 19.55 B0.08 0.46 2.40MAX DIP-16-300-2.54 UNIT: mm 6.35 7.62 B B 1.52 15 degree 3.00MIN 0.5MIN 4.36MAX 19.55 0.3 B 0.25 0.25 0.05 2.54 B0.3 0.99 B0.08 1.27MAX 0.46  HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD Rev: 1.0 10  2002.03.29