TX-5B/RX-5B TOY CAR REMOTE CONTROLLER WITH NINE FUNCTIONS DESCRIPTION The TX-5B/RX-5B are a pair of CMOS LSIs designed for remote DIP-16 controlled car applications. They have nine control keys controlling the motions (i.e. forward, backward, rightward, leftward, trigger 1-trigger 4 functions and the turbo function) of the remote controlled car. The TX-5B is housed in DIP-16 package, and the RX-5B is housed DIP-22 in DIP-22 package. FEATURES SDIP-22 * Wide operating voltage range TX-5B: (VDD=2.2~12.0V) RX-5B: (VDD=3.0~12.0V) ORDERING INFORMATION * Very Low stand-by current for TX-5B Device * Auto-power-off function for TX-5B * Few external components are needed Package DIP-16-300-2.54 * Built-in 3.6V zener for RX-5B TX-5B/RX-5B * 9 functions remote controller controlling: forward, backward, right, DIP-22-400-2.54 SDIP-22-300-2.54 left, turbo, trigger 1-- trigger 4 functions BLOCK DIAGRAM TEST 2 OSCI 14 OSCO 13 Timing Generator Oscillator 11 VDD RIGHT 1 LEFT 16 TURBO 6 FORWARD 5 BACKWARD 4 12 PC Latch Circuit Encoding Circuit Logic 10 SO 7 SC 15 9 8 3 F1 F2 F34 GND TX-5B Block Diagram HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:2.1 2004.08.03 Page 1 of 10 TX-5B/RX-5B BLOCK DIAGRAM (continued) 4 OSCI Oscillator Timing Generator Counter Decoding Circuit PLA 19 VDD 5 OSCO SI 3 VO1 21 VI1 20 AMP 7 RIGHT 9 LEFT LDB 12 LRTD 13 RDB 11 18 TURBO 14 BACKWARD Control Logic 16 FORWARD Latch Circuit 6 F1 8 F2 VT 10 VI2 22 17 F3 VO2 1 15 F4 2 GND RX-5B Block Diagram ABSOLUTE MAXIMUM RATINGS Characteristics Symbol Value Unit VDD 0.3 ~ 5.0 V VIN,VOUT GND-0.2V ~ VDD+0.2V V Operating Temperature Topr -10 ~ +60 °C Storage Temperature Tstg -25~+125 °C DC Supply Voltage Input/Output Voltage COMMENT Never allow a stress to exceed the values listed under "Absolute Maximum Ratings", otherwise the device would suffer from a permanent damage. Nor is a stress at the listed value be allowed to persist over a period, since an extended exposure to the absolute maximum rating condition may also affect the reliability of the device, if not causing a damage thereof. ELECTRICAL CHARACTERISTICS TX-5B (VDD=9V, Fosc=128KHz, Tamb=25°C, unless otherwise specified.) Characteristics Symbol Min. Typ. Max. Unit Operating Voltage VDD 2.2 9.0 12.0 V Operating Current IDD -- -- 1.5 mA Stand-By Current ISTB -- 1.0 1000 µA DC O/P Driving Current(RF) Idrive -- 10.0 -- mA AC O/P Driving Current(IR) Idrive -- 6.0 -- mA AC O/P Frequency Faudio -- 500 -- Hz HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:2.1 2004.08.03 Page 2 of 10 TX-5B/RX-5B RX-5B (VDD=9V, Fosc=128KHz, Tamb=25°C, unless otherwise specified.) Characteristics Operating Voltage Symbol Min. Typ. Max. Unit VDD 3.0 9.0 12.0 V Operating Current IDD -- 30.0 -- mA O/P Driving Current Idrive 5.0 -- -- mA Idf 5.0 -- -- mA Ftolerance -50% -- 50% -- O/P Driving Current(F1,F2) Effect Decoding Frequency Variation PIN CONFIGURATION PIN DESCRIPTION TX-5B Pin No. Symbol Description 1 RIGHT The rightward function will be selected when this pin is connected to GND 2 TEST This pin is used for testing mode 3 GND Negative power supply 4 BACKWARD The backward function will be selected when this pin is connected to GND 5 FORWARD The forward function will be selected when this pin is connected to GND 6 TURBO 7 SC Output pin of the encoding signal with carrier frequency 8 F34 F3 and F4 function select (sequential trigger) The turbo function will be selected, if this pin is connected to GND 9 F2 F2 function select 10 SO Output pin of the encoding signal without carrier frequency 11 VDD Positive power supply 12 PC Power control output pin 13 OSCO Oscillator output pin 14 OSCI Oscillator input pin 15 F1 F1 function select 16 LEFT The leftward function will be selected when this pin is connected to GND HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:2.1 2004.08.03 Page 3 of 10 TX-5B/RX-5B RX-5B Pin No. Symbol Description 1 VO2 Inverter 2 output pin for signal amplify 2 GND Negative power supply 3 SI 4 OSCI Oscillator input pin 5 OSCO Oscillator output pin 6,8,17,15 F1, F2,F3,F4 7 RIGHT 9 LEFT 10 VT 11 RDB Right disable pin. 12 LDB Left disable pin. 13 LRTD 14 BACKWARD 16 FORWARD Forward output pin 18 TURBO TURBO output pin 19 VDD Positive power supply 20 VI1 Inverter 1 input pin for signal amplify 21 VO1 Inverter 1 output pin for signal amplify 22 VI2 Inverter 2 input pin for signal amplify Input pin of the encoding signal F1,F2,F3,F4 function output pin Rightward output pin Leftward output pin Auto Shut-OFF input pin. If VT voltage exceeds 1.4V, all outputs shut off automatically. Left/right turbo disable pin Backward output pin FUNCTION DESCRIPTION The TX-5B/RX-5B are a pair of CMOS LSIs designed for remote controlled car applications. The TX-5B/RX-5B have nine control keys controlling the motions (i.e. forward, backward, rightward, leftward, and trigger1--trigger4 functions and the turbo function) of the remote controlled car. 1. OVER-CURRENT PROTECTION An Auto Shut-Off mechanism is built-in according to Toy Safety Requirement and effective during over-current situation in motor driver. The active high input applying to this Auto Shut-Off pin will turn off the motor. (VT pin, when unused, has to be connected to ground. The transfer point=1.4V) 2. DATA FORMAT F1="1" 500Hz, 3/4 duty F0="0" 500Hz, 1/4 duty 3. CODING METHOD 3.1 When a trigger pin is triggered, its data code will correspond to the data format of "F1", while the remaining pins will have the data format of "F0". 3.2. Data string: start code + data code +parity code + end code Start code = F1 F1 F1 F1 F0 Data code = HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:2.1 2004.08.03 Page 4 of 10 TX-5B/RX-5B F B T R L F1 F3 F4 F2 F = Forward B = Backward T = Turbo R = Right F1 = Function1 F2 = Function2 F3 = Function3 F4 = Function4 L = Left Parity code = for parity check End code = for (latch data) * Data code can be any combination of F,B,T,R,L,F1,F2,F3,F4 except for F&B, R&L, F3&F4. OUTPUT TABLES Function Output Status F FORWARD H LEFT+FORWARD H RIGHT+FORWARD H B T R L F1 F2 F3 F4 H H TURBO H TURBO+FORWARD H H TURBO+LEFT+ FORWARD H H TURBO+RIGHT+FORWARD H H BACKWARD H BACKWARD+RIGHT H BACKWARD+LEFT H TURBO+BACKWARD H H TRUBO+BACKWARD+RIGHT H H TURBO+BACKWARD +LEFT H H H H H H H H LEFT H RIGHT H FUNCTION1 H FORWARD+FUNCTION1 H FORWARD+TURBO+FUNC1 H H TURBO+FUNC1 BACKWARD+FUNC1 H BACKWARD+TURBO+FUNC1 H LEFT+FORWARD+FUNC1 H RIGHT+FORWARD+FUNC1 H H H H H H H H H H LEFT+ BACKWARD +FUNC1 H RIGHT+ BACKWARD +FUNC1 H RIGHT+FUNCTION1 H H H LEFT+FUNCTION1 H H H H H H H Note: (1) In the table, blank=F0. Rows from "FUNCTION1" to "RIGHT+FUNCTION1" (the last row) are similar for FUNCTION2, FUNCTION2, FUNCTION2. Thus, we can see from the table that we have more than 50 states of function combinations from 8 control keys. (2) H = high level. HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:2.1 2004.08.03 Page 5 of 10 TX-5B/RX-5B (3) LRTD pin functions as an option pin for LEFT/RIGHT turbo disable. Please refer to the following table. "LRTD" Key Selected Output Function HIGH (OPEN) FORWARD+LEFT (RIGHT)+ TURBO FORWARD+LEFT (RIGHT)+ TURBO LOW FORWARD+LEFT (RIGHT)+ TURBO FORWARD+LEFT (RIGHT) TESTING CIRCUIT (Fosc for RX-5B ≈128KHz, Fosc for TX-5B ≈128KHz) TX-5B output pin (SO) has an inverted phase with RX-5B input (SI). If TX-5B&RX-5B are connected TX-5B F34 is sequential trigger pin, it controls F3&F4 output at the receiver. without using a RF module, an inverter has to be inserted between these 2 pins, as shown below. F34B (TX Input) VDD 11 15 VDD VDD F3 (RX Output) VDD SO 10 3 TX-5B SI RX-5B F4 (RX Output) connect directly RX-5B R6, INDEX VDD R6 12 270Ω 9 180Ω 6 68Ω HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:2.1 2004.08.03 Page 6 of 10 TX-5B/RX-5B TYPICAL APPLICATION CIRCUIT Transmitter (TX-5B Fosc≈128KHz) Receiver (RX-5B Fosc≈128KHz) R5 100 R4 3.3K C3 47pF T1 L2 C6 0.002 F C5 3.3 F C15 100 F SW C1 10pF R20 100 R8 3.9M L1 C10 0.1 F 22 C4 0.01 F M1 T6 C11 0.01 C12 F 500pF VI2 21 20 VO1 VI1 R11 330 19 18 17 VDD TURBO R10 3.9M F3 16 15 14 13 12 FORWARD F4 BACK- LRTD LDB WARD R22 100 T9 T7 R12 330 R7 330 R9 3.3K R1 5.6K R2 3.3K D1 IN4148 C9 220 F C8 47 F C7 47 F C2 15pF R3 1.2K R6 270 MOTOR T8 T11 R21 330 R23 330 R24 10 (1W) R19 220 RX-5B 12V T10 0V VO2 GND SI 1 2 3 OSCI OSCO 4 5 F1 RIGHT F2 LEFT VT RDB 6 7 8 9 10 11 C17 0.1 F T3 R13 3.3K R25 220 MOTOR R17 330 R14 110K fosc=128KHz T4 M2 R18 330 D2 IN4148 T2 T5 C13 0.002 F C14 10 F HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn R15 1M R16 1 REV:2.1 2004.08.03 Page 7 of 10 TX-5B/RX-5B PACKAGE OUTLINE DIP-16-300-2.54 UNIT: mm DIP-22-400-2.54 UNIT: mm HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:2.1 2004.08.03 Page 8 of 10 TX-5B/RX-5B PACKAGE OUTLINE (Continued) 3.00MIN 4.36MAX 7.62 0.25±0.05 UNIT: mm 0.51MIN 6.60±0.25 SDIP-22-300-2.54 HANDLING MOS DEVICES: Electrostatic charges can exist in many things. All of our MOS devices are internally protected against electrostatic discharge but they can be damaged if the following precautions are not taken: • Persons at a work bench should be earthed via a wrist strap. • Equipment cases should be earthed. • All tools used during assembly, including soldering tools and solder baths, must be earthed. • MOS devices should be packed for dispatch in antistatic/conductive containers. HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:2.1 2004.08.03 Page 9 of 10