三合微科股份有限公司 SAMHOP Microelectronics Corp. SM-T2/SM-R2 REMOTE CONTROLLER WITH FIVE FUNCTION GENERAL DESCRIPTION FEATURES The SM-T2 / SM-R2 is a pair of CMOS chip, it was designed for remote controlled car applications. * Power supply : 2.4V - 5.0V * Low stand-by current * Five functions control * Auto-power-off function for SM-T2 * Few external components are needed The SM-T2 / SM-R2 has five control keys for controlling the motions ( i.e. forward, backward rightward, leftward and the turbo function ) of the remote controller car. APPLICATION * Remote control car etc. PIN ASSIGNMENTS (TOP VIEW) RIGHTB 1 14 LEFTB NC 2 13 NC GND 3 12 OSCI BACKWARDB 4 11 OSCO FORWARDB 5 10 PC TURBOB 6 9 VDD SC 7 8 SO VO2 GND SI OSCI OSCO RIGHT LEFT RDB 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 VI2 VO1 VI1 VDD TURBO FORWARD BACKWARD LDB SM-T2 SM-R2 Page 1 V2.0 Mar 8,2002 三合微科股份有限公司 SAMHOP Microelectronics Corp. SM-T2/SM-R2 REMOTE CONTROLLER WITH FIVE FUNCTION BLOCK DIAGRAM TESTB SM-T2 OSCI TIMING GENERATOR OSCILLATOR OSCO RIGHTB LEFTB TURBOB LATCH CIRCUIT ENCODING CIRCUIT PC LOGIC FORWARDB SO SC FORWARDB SM-R2 OSCI TIMING GENERATOR OSCILLATOR OSCO SI DECODING CIRCUIT AMP COUNTER PLA RIGHT VI1 VI2 LEFT VO1 CONTROL LOGIC VO2 LATCH TURBO BACKWARD FORWARD LDB RDB Page 2 V2.0 Mar 8,2002 三合微科股份有限公司 SM-T2/SM-R2 SAMHOP Microelectronics Corp. REMOTE CONTROLLER WITH FIVE FUNCTION PIN DESCRIPTION SM-T2 Description Pin No. Pin Name 1 RIGHTB 2, 13 NC 3 GND 4 BACKWARDB 5 FORWARDB 6 TURBOB 7 SC 8 SO 9 VDD 10 PC 11 OSCO Oscillator output pin 12 OSCI Oscillator input pin 14 LEFTB The rightward function will be selected, if this pin is connected to GND 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 Positive power supply Power control output pin The leftward function will be selected, if this pin is connected to GND SM-R2 Description Pin No. Pin Name 1 VO2 Inverter 2 output pin for power amplify 2 GND Negative power supply 3 SI 4 OSCI Oscillator input pin 5 OSCO Oscillator output pin 6 RIGHT Rightward output pin 7 LEFT 8 RDB 9 LDB 10 BACKWARD 11 FORWARD Forward output pin 12 TURBO TURBO output pin 13 VDD 14 15 VI1 Inverter 1 input pin for power amplify VO1 Inverter 1 output pin for power amplify 16 VI2 Inverter 2 input pin for power amplify Input pin of the encoding signal Leftward output pin Leftward function disable, if this pin is connected to GND Backward output pin Positive power supply Page 3 VER 1.0, DEC. 2000 三合微科股份有限公司 SAMHOP Microelectronics Corp. SM-T2/SM-R2 REMOTE CONTROLLER WITH FIVE FUNCTION FUNCTION DESCRIPTION 1. Code Format Encode Rule (Bit Format) 1KHz 1KHz 50% Duty cycle W1 500Hz 75% Duty cycle W2 2. Data Format W2 W2 W2 W2 (n) x W1 W2 W2 W2 W2 (n) x W1 W2 W2 W2 W2 No. of Function Code (n) W1 Decode Result Function Key End Code 4 W2 1 W2 2 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 W2 3 W2 4 W2 •••••• W1 W1 W1 W1 1 2 3 4 W1 n-th W2 W2 W2 W1 start code function code 1 word Page 4 V2.0 Mar 8,2002 三合微科股份有限公司 SAMHOP Microelectronics Corp. SM-T2/SM-R2 REMOTE CONTROLLER WITH FIVE FUNCTION 3. Encode/Decode Timing (A) 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 (B) •••••• SI 8 msec (n) W1 8 msec 1ms Decode output T T=17ms+(nW1)x1ms Page 5 V2.0 Mar 8,2002 三合微科股份有限公司 SAMHOP Microelectronics Corp. SM-T2/SM-R2 REMOTE CONTROLLER WITH FIVE FUNCTION ABSOLUTE MAXIMUM RATINGS Symbol Ratings Unit DC Supply Voltage VDD 5 V Input/Output Voltage VIN GND-0.3 to VSS +0.3 V Operating temperature Topt -10~60 o Storage Temperature Tstg -25~125 o Parameter C C COMMENTS Never allow a stress to exceed the values listed under "Absolute Maximum Ratings", other -wise the device would suffer from a permanent damage. Nor is a stress since an extended exposure to the absolute maximum rating condition may also affect the reliability of the device, if not causing a damage thereof. DC ELECTRICAL CHARACTERISTICS TX2 (VDD=4.5V, Fosc=128KHz, TA=25oC, unless otherwise specified. Symbol Min. Typ. Max. Unit Operating Voltage VDD 3 4 5 V Operating Current Idd ─ ─ 2 mA Stand-by Current Istb ─ ─ 10 mA µ DC O/P Driving Current Idrive 5 ─ ─ mA AC O/P Driving Current Idrive 5 ─ ─ mA Faudio 500 ─ 1K Hz Parameter AC O/P Frequency RX2 (VDD=4.0V, Fosc=128KHz, TA=25oC, unless otherwise specified. Symbol Min. Typ. Max. Unit Operating Voltage VDD 3 4 5 V Operating Current Idd ─ ─ 2 mA O/P Driving Current Idrive 1 ─ ─ mA O/P Sinking Current Isink 1 ─ ─ mA Ftolerance -20 ─ 20 % Parameter Effect Decoding Frequency Variation Page 6 V2.0 Mar 8,2002 三合微科股份有限公司 SM-T2/SM-R2 SAMHOP Microelectronics Corp. REMOTE CONTROLLER WITH FIVE FUNCTION APPLICATION CIRCUIT TX2 C12 C11 V7 .01µ 4.7 µ 4148 POWER OFF R2 4.7K 8 VDD SO 9 10 PC 7 SC TURBOB 6 5 CR1 27.145 V2 9014 L1 2.2µ V1 9014 C7 68 C7 68 V6 9013 A1 ANTENNA L2 2.2 µ C8 .02 µ C9 68 R5 33 K B1 9V R8 3.9K V3 LED R4 6.8K R3 220K FOR 11 OSCO BACK 4 GND OSCI 12 R10 1K 3 13 2 TESTB RIHGTB 1 V5 8550 V4 4.7V R12 10M S5 OFF LEFTB 14 S6 R7 200K R11 10M R9 330 C4 150 L4 6.8 µ L3 C2 L4 1506.8 R1 100 C1 100 C6 0.2µ R6 100 S1 S2 S3 S4 Page 7 V2.0 Mar 8,2002 三合微科股份有限公司 SM-T2/SM-R2 SAMHOP Microelectronics Corp. REMOTE CONTROLLER WITH FIVE FUNCTION APPLICATION CIRCUIT RX C15 C12 .01µ 100µ C13 C14 4.7µ .01µ R12 510 C18 C19 100 µ .1 µ A1 C6 18 V1 C1815 VD1 4.2V L2 9V V8 9013 C4 4.7 µ C5 .02 µ R16 100 R3 2.2K V2 9013 C7 0.1µ C9 0.1µ R4 2.2M R23 1K R8 200K R7 2.2K C11 1000 V4 8550 V6 8050 R18 330 LDB 9 R25 1K C17 .02 µ ROB R13 220 8 10 B/WARD LEFT R17 100 V7 9013 V5 8550 M1 R15 330 7 11 F/WARD RIGHT 12 TURBO 5 OSCI 4 SI 3 GND 2 OSCO 13 VDD 14 VI1 15 VO2 16 VI2 1 VO2 R6 2.2M C6 .02 µ V3 8050 R24 1K C8 470 R5 2.2K C10 30 12V R11 10 R2 180K C3 3000 R1 1K V9 8550 R20 100 6 L1 2.2 µ R10 4.3K C1 4 C2 47 V11 9013 V13 8550 R9 330 R14 220 V14 8550 M2 V12 8050 V15 8050 V10 9013 R19 330 R21 1K R22 1K Page 8 V2.0 Mar 8,2002