RCT02

UTC RCT02 Encoder For Remote Controller With Five Functions DESCRIPTION The chip can be used with the decoder RCR02 to provide a complete control functions to the remote-controlled toy. The RCT02 has five input pins corresponding with the five function buttons i.e, forward, backward, rightward, leftward and turbo. The encoding circuit in the RCT02 sends digital codes to the two output pins SO and SC. The digital codes correspond to the definite function buttons or their combinations. The SO and SC outputs are used in wireless and infra-red applications respectively. There is an internal oscillator in the RCT02. By adding an external resistor conveniently, the oscillator will be constructed. The oscillator frequency can be adjusted by the external resistor. The relative error between the frequencies of the two on chip oscillators in the RCT02 and RCR02 must be less than ±25%. The auto-power-off function is achieved by an internal counter. When the RCT02 is powered on, the counter is reset and begin to count. Any action of push down or release the function button also reset the counter. The PC pin will keep on a high level until the counter counts up to about 4 minutes. The PC output is used to control on/off state of the external power supply. Pressing OFF button can also shut down the power supply. Press on any function button will wake up the chip promptly. CMOS IC SOP-14 DIP-14 FEATURES *Five input pins used for five control buttons *Operating power-supply voltage range: 2.5 to 5.0V *Auto-power-off if no press on any button in 4 minutes or continuously press on any button over 4 minues *Manual-power-on/off with ON/OFF button *One output pin used for external power control *Press on any button as wake up *On-chip oscillator with an external resistor *Low operating current *Few external components needed UTC UNISONIC TECHNOLOGIES CO., LTD. 1 QW-R502-002,C UTC RCT02 Logic Block Diagram OFF OSCI Oscillator OSCO CMOS IC Timing Generator 4 Minutes Counter PC RIGHTB LEFTB TURBOB FORWARDB BACKWARDB Input Circuit Encoding Circuit SO Output Circuit SC Product Pin Configuration and Pin Description RIGHTB TESTB GND BACKWARDB FORWARDB TURBOB SC 1 2 3 4 5 6 7 14 13 12 11 10 9 8 LEFTB OFF OSCI OSCO PC VDD SO Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Pin Name RIGHTB TESTB GND BACKWARDB FORWARDB TURBOB SC SO VDD PC OSCO OSCI OFF LEFTB Description The rightward function will be selected, if this pin is connected to GND This pin is used for testing mode Negative power supply 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 The turbo function will be selected, if this pin is connected to GND Output pin of the encoding signal with carrier frequency Output pin of the encoding signal without carrier frequency Positive power supply Power control output pin Oscillator output pin Oscillator input pin This pin is used to shut down the external power supply The leftward function will be selected, if this pin is connected to GND UTC UNISONIC TECHNOLOGIES CO., LTD. 2 QW-R502-002,C UTC RCT02 ABSOLUTE MAXIMUM RATINGS PARAMETER DC Input Voltage Supply Voltage to Ground Potential(Inputs &VDD Only) Supply Voltage to Ground Potential(Outputs &D/O Only) DC Output Current Power Dissipation Ambient Temperature With Power Applied Storage Temperature CMOS IC SYMBOL VIN VALUE -0.5 ~ +5.5 -0.5 ~ +5.5 -0.5 ~ +5.5 20 500 -10 to +40 -25 to +85 UNIT V V V Io PD TA TSTG mA mW °C °C DC ELECTRICAL CHARACTERISTICS (Over the operating rating, TA= -10°C~ +40°C,VDD=4.0V±10%) PARAMETER Operating Voltage Supply Current Standby Current Input Current Input Low Voltage Output High Voltage Output High Current Output Low Voltage Output Low Current SYMBOL VDD IDD ISTB IIN VIL VOH IOH VOL IOL TEST CONDITIONS Output unloaded OFF state Pin 1,4,5,6,14 Guaranteed Logic Low Level IOUT=1.0mA VOUT=1.4V IOUT=150µA VOUT=0.5V MIN 2.5 TYP 4.0 MAX 5.0 300 10 60 0.5 UNITS V µA µA µA V V mA V µA 3.5 -4.0 0.5 150 AC ELECTRICAL CHARACTERISTICS (Over the operating rating, TA= -10°C to +40°C,VDD=4.0V±10%) PARAMETER Oscillator Frequency (Note 1) SYMBOL Fosc TFUN TSTA FCSC TOFF* TEST CONDITIONS TA=25°C,R=200KΩ FOSC=102~ 154KHz FOSC=102~ 154KHz FOSC=102~ 154KHz FOSC=102~ 154KHz MIN 102 0.8 1.6 51 3.2 TYP 128 1 21 64 4 MAX 154 1.2 2.4 77 4.8 UNITS KHz ms ms KHz min. Cycle Time of Function Code Cycle Time of Start Code Carrier Frequency of SC Pin Time of Auto-Power-Off (Note 2) Note 1: The relative error between the frequencies of the two on-chip oscillators in the RCT02 and RCR02 must be less than±25%. Note 2: When adjust the external oscillator resistor, the auto-power-off time will vary relevantly. UTC UNISONIC TECHNOLOGIES CO., LTD. 3 QW-R502-002,C UTC RCT02 CODE FORMAT (W1 is used for function codes, W2 for start codes) CMOS IC W1 W1:1KHz 50% Duty Cycle Typical W2 W2: 500Hz 75% Duty Cycle Typical WORD FORMAT Start Code: 4W2 Function Code: n' W1 1 Word ENCODING TIMING W2 W2 W2 W2 (n)’ W1 W2 W2 W2 W2 (n)’ W1 W2 W2 W2 W2 (n)’ W1 W2 W2 W2 W2 (n)’W1- - - - - - - - Press any buttons Encoding output 1 1st word 2nd word Function Codes last word 2 3 14 15 End Codes UTC UNISONIC TECHNOLOGIES CO., LTD. 4 QW-R502-002,C UTC RCT02 Number of Function Codes (n) W1 4 10 16 22 28 34 40 46 52 58 64 Forward Forward & Turbo Turbo (Turbo/Forward) & Left (Turbo/Forward) & Right Backward Backward & Right Backward & Left Left Right Function Buttons (End Code) CMOS IC PC Output Timing VDD OFF PC 4 Minutes Note: There is no press on any function button. VDD OFF PC 4 Minutes VDD Press Function buttons PC 4 Minutes 4 Minutes 4 Minutes UTC UNISONIC TECHNOLOGIES CO., LTD. 5 QW-R502-002,C UTC RCT02 BLOCK DIAGRAM OF APPLICATION CIRCUIT (1) CMOS IC 5~12V 1 2 3 RIGHTB TESTB GND LEFTB OFF OSCI OSCO PC VDD SO 14 13 12 11 10 9 8 + POW ER OFF 4 5 6 7 BACK FOR TURBOB SC RCT02 RF TRANSMITTER Note: 1.The power supply for above circuit should be 5.0V to 12V. 2.This circuit is for wireless application. UTC UNISONIC TECHNOLOGIES CO., LTD. 6 QW-R502-002,C UTC RCT02 BLOCK DIAGRAM OF APPLICATION CIRCUIT (2) CMOS IC 2.5~5.0V 1 2 3 4 5 6 7 RIGHTB TESTB GND BACK FOR TURBOB SC LEFTB OFF OSCI OSCO PC VDD SO 14 13 12 11 10 9 8 ﹢ POW ER OFF RCT02 RF TRANSMITTER Note: 1.The power supply for above circuit should be 2.5V to 5.0V. 2. This circuit is for wireless application. UTC UNISONIC TECHNOLOGIES CO., LTD. 7 QW-R502-002,C UTC RCT02 BLOCK DIAGRAM OF APPLICATION CIRCUIT (3) CMOS IC 5~12V RCT02 1 2 3 4 5 6 7 RIGHTB TESTB GND BACK FOR TURBOB SC LEFTB OFF OSCI OSCO PC VDD SO 14 13 12 11 10 9 8 + POW ER OFF INFRA-RED DIODES + Note: 1.The power supply for above circuit should be 5.0V to 12V. 2.This circuit is for infra-red application. UTC UNISONIC TECHNOLOGIES CO., LTD. 8 QW-R502-002,C UTC RCT02 BLOCK DIAGRAM OF APPLICATION CIRCUIT (4) CMOS IC 2.5~5.0V 1 2 3 4 5 6 7 RIGHTB TESTB GND BACK FOR TURBOB SC LEFTB OFF OSCI OSCO PC VDD SO 14 13 12 11 10 9 8 + POW ER OFF RCT02 INFRA - RED DIODES + Note: 1.The power supply for above circuit should be 2.5V to 5.0V. 2.This circuit is for infra-red application. UTC UNISONIC TECHNOLOGIES CO., LTD. 9 QW-R502-002,C UTC RCT02 CMOS IC TYPICAL APPLICATION FOR TRANSIMIT CIRCUIT WITH 9V BATTERY R11 10M C12 0.01u POW ER OFF S6 S5 R7200K C11 V7 4.7u 4148 + V4 4.7V R10 1K R4 6.8K C8 0.02u V1 9014 C3 47 C9 68 14 13 12 11 10 R2 4.7K V3 LED R9 330 V5 8550 R8 3.9K R12 10M V6 9013 B1 9V LEFTB VDD OFF OSCI OSCO SO PC L2 2.2u C4 150 C2 150 L3 A1 ANTENNA L4 6.8u C1 100 9 RIGHTB TESTB BACK GND FOR TURBOB RCT02 8 R3 220K SC CR1 27.145 V2 9014 L1 2.2u C7 68 R5 3.3K 5 1 4 6 2 3 7 R1 100 C6 0.2 u S1 S2 S3 S4 R6 100 UTC UNISONIC TECHNOLOGIES CO., LTD. 10 QW-R502-002,C UTC RCT02 CMOS IC TYPICAL APPLICATION FOR TRANSIMIT CIRCUIT WITH 9V BATTERY A1 ANITENNA L4 6.8u C1 100 C4 L3 150 L2 2.2u V1 9014 C8 02u C3 47 c9 68 R5 33K L1 2.2u C7 68 V2 9014 R9 330 V4 4.2V R3 CR1 220K 27.145 R6 100 10 VDD PC 9 8 SO R4 6.8K B1 9V C12 C11 01U 3.3U R7 200K 14 13 LEFTB OSCI OFF 12 OSCO 11 R1 100 C6 0.2u TURBOB RIGHTB TESTB GND BACK FOR 5 2 3 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. UTC UNISONIC TECHNOLOGIES CO., LTD. 1 4 6 7 SC RCT02 11 QW-R502-002,C