Data Sheet PT8A971AP/975P 5-Function Remote Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Features General Description • The PT8A971AP works as the encoder and the The PT8A971AP and PT8A975P is a pair of CMOS PT8A975P works as the decoder LSIs designed to provide a complete control functions • Five pins for five control functions to remote-controlled toy. The PT8A971AP has five • Operating power supply voltage: 2.5 to 5.0V input pins corresponding with the five function • Auto-power-off if no press on any button in 8s or buttons - forward, backward, right, left and turbo. The continuously press on any button over 4 minutes encoding circuit in the PT8A971AP sends digital (971AP) codes to the two output pins SO and SC. The digital • Auto-power-off if no signals received in 5 minutes codes correspond to the definite function buttons and (975P) their combinations. The SO and SC outputs are used • Press on any button to wake up in wireless and infrared applications respectively. • Manual-power-off with OFF button (971AP) There is an internal oscillator in the PT8A971AP and • Over current limited (975P) PT8A975P respectively. The oscillator frequency can • One output pin for external power control be adjusted by the external resistor. The relative error • On-chip oscillator with an external resistor between the frequencies of the two on-chip oscillators • Low operating current in the PT8A971AP and PT8A975P must be less than • Few external components needed ±25%. • PT8A975 pin to pin compatible with PT8A972A The auto-power-off function is achieved by internal • Package: 14-pin DIP (971AP) and 18-pin DIP counters. Pressing OFF button can also shut down (975P) the power supply. Press on any function button will wake up the chip promptly. Block Diagram Block Diagram of PT8A971AP OFF OSCI Oscillator Timing Generator 4 Minutes Counter Input Circuit Encoding Circuit Output Circuit OSCO PC Right Left Turbo Forward SO SC Backward PT0067(28/08/01) 1 Ver:0 Data Sheet PT8A971AP/975P 5-Function Remote Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Block Diagram of PT8A975P ON/OFF OSCI Timing Generator Oscillator 5 Minutes Counter Power Control PC OSCO SI VI1 VI2 Amp. Amp. Amp. Signal Sample and Fault-Tolerant Check Decoding Circuit Right Left VO1 VO2 Output Circuit Current Limit Isense Turbo Forward Backward Pin Configuration PT0067(28/08/01) 2 Ver:0 Data Sheet PT8A971AP/975P 5-Function Remote Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Pin Description Pin Description of PT8A971AP Pin Description of PT8A975P PT0067(28/08/01) 3 Ver:0 Data Sheet PT8A971AP/975P 5-Function Remote Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Code Format (W1 is for function codes and W2 for start codes) W1 W1: 1kHz 50% Duty Cycle (Typical) W2 W2: 500Hz 75% Duty Cycle (Typical) Word Format Start Code: 4 x W2 Function Code: n x W1 1 Word Encoding and Decoding Timing Encoding String: W2, W2, W2, W2, (n)xW1, W2, W2, W2, W2, (n)xW1, W2, W2, W2, W2, (n)xW1, ... ... Press Any Button on PT8A971AP Encoding Output from PT8A971AP 1 1st word 2nd word 2 3 14 15 last word Function Codes End Codes Decoding Output from PT8A975P 9ms PT0067(28/08/01) 9ms 4 Ver:0 Data Sheet PT8A971AP/975P 5-Function Remote Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Encoding Input and Decoding Result Decoding Results Number of Function Codes (n) W1 4±1 End Code 10 ± 1 Forward (Pulse) 16 ± 1 Forward (High level) 22 ± 1 Turbo 28 ± 1 Forward (High level) & Left 34 ± 1 40 ± 1 Forward (High level) & Right 46 ± 1 Backward & Right 52 ± 1 Backward & Left 58 ± 1 Left Right Backward 64 ± 1 PC Output Timing PC Timing of PT8A971AP VCC VCC OFF OFF PC PC 8s £ 8s Note: Pins 2, 4, 6, 13 and 14 are High. VCC Pins 2, 4, 6, 13, 14 PC 8s 8s 4 min PC Timing of PT8A975P VCC ON/OFF SI PC 5 minutes PT0067(28/08/01) 5 minutes 5 Ver:0 Data Sheet PT8A971AP/975P 5-Function Remote Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Over-Current Limit Timing Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested) Note: Storage Temperature ........................................................ -25oC to +85oC Stresses greater than those listed under MAXIMUM Ambient Temperature with Power Applied ...................... -10oC to +40oC RATINGS may cause permanent damage to the Supply Voltage to Ground Potential (Inputs & VCC Only) .... -0.5 to +6.0V device. This is a stress rating only and functional Supply Voltage to Ground Potential (Outputs & D/O Only) -0.5 to +6.0V operation of the device at these or any other condiDC Input Voltage ................................................................ -0.5 to +6.0V tions above those indicated in the operational secDC Output Current ........................................................................ 20mA tions of this specification is not implied. Exposure Power Dissipation ....................................................................... 500mW to absolute maximum rating conditions for extended periods may affect reliability. DC Electrical Characteristics DC Electrical Characteristics of PT8A971AP Description Sym V CC Operating Voltage I CC ISTB Supply Current VIH VIL Input High Voltage Input Low Voltage IIH Input High Current IIL Input Low Current Test Condition Output High Current IOL Output Low Current Type Max Units 2.5 4.0 5.0 V 300 10 uA uA Guaranteed Logic Low Level VIN = VCC 0.5 10 V uA VIN = GND - 60 uA Output Unloaded - Stand-by Current IOH Min - Guaranteed Logic High Level 3.5 V Pins 7, 8, 10 VOUT = 3.5V -1 Pin 11 VOUT = 3.5V -0.2 Pins 7, 8, 10 VOUT = 0.5V 0.5 mA Pin 11 VOUT = 0.5V 0.2 mA mA -1 mA Note: Over the Operating Rating, 0°C £ TA £ 70°C, VCC = 4V PT0067(28/08/01) 6 Ver:0 Data Sheet PT8A971AP/975P 5-Function Remote Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| DC Electrical Characteristics of PT8A975P Description Sym V CC Operating Voltage I CC ISTB Supply Current Test Condition * VIL Input High Voltage Input Low Voltage Guaranteed Logic High Level IIH Input High Current VIN = VCC, On State IIL Input Low Current Output High Current IOL Output Low Current VSENSE Over-current Limiter 2.5 4.0 Pin 10 Max Units 5.0 V 1.5 mA 30 uA 3.5 V Guaranteed Logic Low Level 20 0.5 V 100 uA Pin 3 VIN = VCC, On State -20 uA Pins 1, 4, 7, 16 VIN = VCC, On State 10 uA Pin 7 VIN = GND, On State -100 uA Pin 3 VIN = GND, On State VIN = GND, On State -20 -10 uA uA -1 mA mA 1 mA Pins 1, 4, 10, 16 IOH Type * Stand-by Current VIH Min Pins 6, 8, 11, 12, 13, 14 -20 Pins 2, 5, 17 VOUT = 3.5V VOUT = 3.5V -3 -0.2 Pins 6, 8, 11, 12, 13, 14 VOUT = 0.5V 0.5 Pins 2, 5, 17 VOUT = 0.5V 0.2 Pin 10 Forward is High. 0.25 mA 0.45 V Note: Over the Operating Rating, 0°C £ TA £ 70°C, VCC = 4V * Output unloaded; 2.2MW feedback resistors for two reversing amplifiers; 200kW external resistor for on-chip oscillator. AC Electrical Characteristics AC Electrical Characteristics of PT8A971AP Sym Description Test Condition fOSC Oscillator Frequency * TA= 25°C, R = 200 kW Min Type Max 102 128 154 Units kHz tFUN Cycle Time of Function Code fOSC = 102 to 154 kHz 0.8 1 1.2 ms tSTA Cycle Time of Start Code fOSC = 102 to 154 kHz 1.6 2 2.4 ms fCSC Carrier Frequency of SC Pin fOSC = 102 to 154 kHz 51 64 77 kHz tOFF Time of Auto-Power-Off ** Pins 2, 4, 6, 13 and 14 are High. 6.4 8 9.6 s Any of pins 2, 4, 6, 13 and 14 is Low. 3.2 4 4.8 min Note: Over the Operating Rating, 0°C £ TA £ 70°C, VCC = 4V * The relative frequency error between two on-chip oscillators of the PT8A971AP and PT8A975P must be less than ±25%. ** Adjusting the external oscillator resistor will cause the auto-power-off time change. AC Electrical Characteristics of PT8A975P fOSC Sym Oscillator Frequency * Test Condition TA= 25°C, R = 200 kW VSI SI Pin VPP Receive Sensitivity Guaranteed effective decoding tFUN Cycle Time of Function Code Cycle Time of Start Code fOSC = 128 kHz to 154kHz 0.75 1 1.25 ms fOSC = 128 kHz to 154kHz fOSC = 102 to 154 kHz 1.5 4 2 5 2.5 6 ms min. Decode time for function code fOSC = 128 kHz 45 Decode time for end code fOSC = 128 kHz to 154kHz tSTA tOFF tDEC Description Time of Auto-Power-Off ** Min 102 Type 128 Max 154 300 7 Units kHz mV 9 153 ms 11 ms Note: Over the Operating Rating, 0°C £ TA £ 70°C, VCC = 4V * The relative frequency error between two on-chip oscillators of the PT8A971AP and PT8A975P must be less than ±25%. ** Adjusting the external oscillator resistor will cause the auto-power-off time change. PT0067(28/08/01) 7 Ver:0 Data Sheet PT8A971AP/975P 5-Function Remote Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Application Circuit 1M Typical Application of PT8A971AP for Transmit Circuit With 9V Battery 8 1M 9 10 11 12 13 14 PT0067(28/08/01) PT8A971AP SO SC VCC Turbo PC NC OSCO Forward OSCI GND Left Backward Right OFF 8 7 6 5 4 3 2 1 Ver:0 Data Sheet PT8A971AP/975P 5-Function Remote Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Isense Left NC Turbo OSCO Right V CC OSCI ON/OFF Backward VI1 SI Forward VO1 VO2 PC GND VI2 Application Circuit of PT8A975P 200k PT0067(28/08/01) 9 Ver:0 Data Sheet PT8A971AP/975P 5-Function Remote Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Notes Pericom Technology Inc. Email: [email protected] Web Site: www.pti.com.cn China: No. 20 Building, 3/F, 481 Guiping Road, Shanghai, 200233, China Tel: (86)-21-6485 0576 Fax: (86)-21-6485 2181 Asia Pacific: Unit 1517, 15/F, Chevalier Commercial Centre, 8 Wang Hoi Rd, Kowloon Bay, Hongkong Tel: (852)-2243 3660 Fax: (852)- 2243 3667 U.S.A.: 2380 Bering Drive, San Jose, California 95131, USA Tel: (1)-408-435 0800 Fax: (1)-408-435 1100 Pericom Technology Incorporation reserves the right to make changes to its products or specifications at any time, without notice, in order to improve design or performance and to supply the best possible product. Pericom Technology does not assume any responsibility for use of any circuitry described other than the circuitry embodied in Pericom Technology product. The company makes no representations that circuitry described herein is free from patent infringement or other rights, of Pericom Technology Incorporation. PT0067(28/08/01) 10 Ver:0