Data Sheet PT8A977P/977W/978P/978LW 5-Function Remote Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Features General Description • PT8A977P/977W works as encoder and The PTA977P (or 977W) and PT8A978P (or 978LW) PT8A978P/978LW works as decoder provide a complete control functions to the remote- • Five pins for five control functions controlled toy. The PT8A977P/977W has five input • Operating power-supply voltage: 2.5V to 5.0V pins corresponding with the five function buttons i.e, (977P, 977W, 978P), 2.0V to 5.0V (978LW) forward, backward, rightward, leftward and turbo. The • Auto-power-off if no press on any button in 8s or encoding circuit in the PT8A977P/977W sends digital continuously press on any button over 4 minues codes to the two output pins SO and SC. The digital • Press on any button as wake up (977P, 977W) codes correspond to the definite function buttons or • Manual-power-off with OFF button their combinations. The SO and SC outputs are used • One output pin used for external power control (977P, in wireless and infra-red applications respectively. 977W) The PT8A978P (or 978LW) has five output pins • On-chip oscillator with an external resistor corresponding with the five actions. The received • On-chip reversing amplifiers (978P, 978LW) signals are amplified by the three-stage amplifier, and • Low operating current then the appropriate amplified signals are sampled, • Few external components needed fault-tolerantly checked and decoded to control the • Package: 14-pin DIP, 14-pin SOIC, 16-pin DIP actions of the remote-controlled toy. and 16-pin SOIC There is an internal oscillator in the PT8A977P/977W Ordering Information and 978P/978LW respectively. By adding an external Pa r t No. Pa ck a ge resistor conveniently, the oscillator will be PT8A977P 14-pin DIP constructed. The oscillator frequency can be adjusted PT8A977W 14-pin SOIC PT8A978P 16-pin DIP PT8A978LW 16-pin SOIC by the external resistor. The relative error between the frequencies of the two on-chip oscillators in the PT8A977P/977W and PT8A978P/978LW must be less than ±25%. The auto-power-off function is achieved by an internal counter. 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. PT0074(10/01) 1 Ver:1 Data Sheet PT8A977P/977W/978P/978LW 5-Function Remote Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Block Diagram Block Diagram of 977P/977W OFF OSCI Oscillator Timing Generator 4 Minutes Counter Input Circuit Encoding Circuit Output Circuit OSCO PC Right Left Turbo SO SC Forward Backward Block Diagram of 978P/978LW OSCI Timing Generator Oscillator Right Latch Left OSCO Output Circuit Turbo Forward SI Amp. Signal Sample & Fault-Tolerant Check VI1 Amp. VO1 VI2 Amp. Backward Decoding Circuit LD Control Logic VO2 RD Pin Configuration PT8A977P/977W 14-Pin DIP/14-Pin SOIC Right Test GND Backward Forward Turbo SC 1 2 3 4 5 6 7 14 13 12 11 10 9 8 PT8A978P/978LW 16-Pin DIP/16-pin SOIC VO2 GND SI OSCI OSCO Right Left RD Left OFF OSCI OSCO PC VCC SO 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VI2 VO1 VI1 VCC Turbo Forward Backward LD Top View PT0074(10/01) 2 Ver:1 Data Sheet PT8A977P/977W/978P/978LW 5-Function Remote Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Pin Description Pin Description of 977P/977W Pin No. Pin Name Description 1 Right With Pull-up resistor, rightward function selected if this pin connected to GND. 2 Test 3 GND With Pull-up resistor, this pin is used for testing mode. Negative power supply 4 5 Backward With Pull-up resistor, backward function selected if this pin connected to GND. Forward With Pull-up resistor, forward function selected if this pin connected to GND. 6 Turbo 7 SC With Pull-up resistor, turbo function selected if this pin connected to GND. Output pin of the encoding signal with carrier frequency 8 SO Output pin of the encoding signal without carrier frequency 9 Vcc Positive power supply 10 PC Power control output pin 11 OSCO Oscillator output pin 12 OSCI Oscillator input pin 13 14 OFF With Pull-up resistor, this pin is used to shut down the external power supply. Left With Pull-up resistor, leftward function selected if this pin connected to GND. Pin Description of 978P/978LW Pin No. 1 Pin Name Description VO2 Output pin for the amplifier 2 2 GND Negative power supply 3 SI Input pin of the encoding signal 4 OSCI Oscillator input pin 5 OSCO Oscillator output pin 6 Right 7 Left Rightward output pin Leftward output pin 8 RD With Pull-up resistor, rightward function disabled if this pin connected to GND. 9 LD Backward Backward output pin Forward Forward output pin Turbo Vcc Turbo output pin VI1 VO1 Input pin for the amplifier 1 15 16 VI2 Input pin for the amplifier 2 10 11 12 13 14 PT0074(10/01) With Pull-up resistor, leftward function disabled if this pin connected to GND. Positive power supply Output pin for the amplifier 1 3 Ver:1 Data Sheet PT8A977P/977W/978P/978LW 5-Function Remote Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Code Format (W1 is used for function codes, W2 for start codes) 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 and Decoding Timing W2, W2, W2, W2, (n)xW1, W2, W2, W2, W2, (n)xW1, W2, W2, W2, W2, (n)xW1, W2, W2, W2, W2, (n)xW1, Press Any Button on PT8A977P/977W Encoding Output from PT8A977P/977W 1 1st word 2nd word 2 3 14 15 last word Function Codes End Codes Decoding Output from PT8A978P (or 978LW) 9ms PT0074(10/01) 9ms 4 Ver:1 Data Sheet PT8A977P/977W/978P/978LW 5-Function Remote Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Encoding Input and Decoding Result Decoding Results Number of Function Codes (n) W1 4 10 End Code 16 22 Forward (High level) Turbo 28 Forward (High level) & Left 34 40 Forward (High level) & Right 46 Backward & Right 52 Backward & Left 58 64 Left Right Forward (Pulse) Backward PC Output Timing of 977P/977W VCC VCC OFF OFF PC PC 8s Note: Pins 1, 4, 5, 6 and 14 are High. £ 8s VCC Press Function buttons PC 8s PT0074(10/01) 8s 5 4 Minutes Ver:1 Data Sheet PT8A977P/977W/978P/978LW 5-Function Remote Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| 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 Charateristics DC Electrical Charateristics of 977P/977W Parameters Description Test Condition Min. Type Max. Units 2.5 4.0 5.0 100 V uA VCC ICC Operating Voltage ISTB VIL VIH Stand-by Current OFF State 5 uA Input Low Voltage Input High Voltage Guaranteed Logic LOW level Guaranteed Logic HIGH level 0.8 V V IIL IIH Input Low Current Input High Current Pin 1, 4, 5, 6, 13, 14 VIL = 0V, ON state Pin 1, 4, 5, 6, 13, 14 VIH = 4V, ON state -60 10 uA uA II Input Current Pin 12 Output Low Current VIH = 0 ~ 4V, ON state VOUT = 0.5 V ±10 IOL 150 uA uA IOH Output High Current VOUT = 3.5 V VOUT = 3.5 V -1.0 -200 Output unloaded Supply Current Pin 7, 8, 10 Pin 11 3.0 - 800 mA uA Max. Units Note: Over the Operating Rating, 0°C £ TA £ 70°C, VCC = 4V DC Electrical Charateristics of 978P/978LW Parameters Description Test Condition V mA OFF State 10 uA Guaranteed Logic LOW level Guaranteed Logic HIGH level 0.8 V V VIL = 0V, ON state -60 uA Pin 3 VIH = 4V, ON state 60 uA Pin 8, 9 VIH = 4V, ON state 10 uA ±10 850 uA uA mA - 850 uA Supply Current ISTB VIL VIH Stand-by Current Input Low Voltage Input High Voltage IIL Input Low Current Pin 3, 8, 9 Input High Current Input High Current Operating Voltage - 978LW IOL IOH 2.0 Output unloaded Pin 14, 16 Pin 1, 5, 15 Output Low Current Pin 6, 7, 10, 11, 12 Input Current Output High Current 4.0 5.0 1 ICC II Type 2.5 V Operating Voltage - 978P IIH Min. 5.0 VCC VIH = 0 ~ 4V, ON state VOUT = 0.5 V VOUT = 0.5 V 3.0 200 2 Pin 1, 5, 15 VOUT = 3.5 V -200 Pin 6, 7, 10, 11, 12 VOUT = 3.5 V -500 uA Note: Over the Operating Rating, 0°C £ TA £ 70°C, VCC = 4V PT0074(10/01) 6 Ver:1 Data Sheet PT8A977P/977W/978P/978LW 5-Function Remote Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| AC Electrical Characteristics AC Electrical Characteristics of 977P/977W Parameters fOSC fmax-fmin Test Condition Description TA= 25°C, R = 200 kW Oscillator Frequency * Oscillator Frequency Fluctuation - 977P/977W TA=25°C, VCC= 2.5 ~ 5V Min. Type 102 128 Max. Units 154 15 kHz kH z 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 Pins 1, 4, 5, 6 and 14 are High. 6.4 8 9.6 s Any of pins 1, 4, 5, 6 or 14 is Low. 3.2 4 4.8 min. tOFF Time of Auto-Power-Off ** Note: Over the Operating Rating, 0°C £ TA £ 70°C, VCC = 4V * The relative error between the frequencies of the two on-chip oscillators in the PT8A977P (or 977W) and PT8A978P (or 978LW) must be less than ±25%. ** When adjust the external oscillator resistor, the auto-power-off time will vary relevantly. AC Electrical Characteristics of 978P/978LW Parameters fOSC fmax-fmin Description Test Condition Min. Type Max. Units 102 128 154 kH z Oscillator Frequency * TA= 25°C, R = 200 kW Oscillator Frequency Fluctuation - 978P TA=25°C, VCC=2.5 ~ 5V 15 kH z Oscillator Frequency Fluctuation - 978LW TA=25°C, VCC=2.0 ~ 5V 10 kH z VSI SI Pin Receive Sensitivity (VPP) Guaranteed Effective Decoding 300 tFUN Cycle Time of Function Code fOSC = 128 kHz 0.75 tSTA Cycle Time of Start Code fOSC = 128 kHz 1.5 mV 1 1.25 ms 2 2.5 ms Note: Over the Operating Rating, 0°C £ TA £ 70°C, VCC = 4V * The relative error between the frequencies of the two on-chip oscillators in the PT8A977P (or 977W) and PT8A978P (or 978LW) must be less than ±25%. PT0074(10/01) 7 Ver:1 Data Sheet PT8A977P/977W/978P/978LW 5-Function Remote Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Application Circuits C2 150 C1 100 6.8u L4 R5 33K C7 68 C3 47 SC SO 8 9 VCC VDD TURBOB 10 PC PC Forward 11 OSCO 12 OSCI 13 OFF 14 Left OSCI S5 S2 PT8A977P OSCO TESTB OFF S6 S1 Test 2 GND GND 3 BACK Backward 4 R7 200K FOR RIGHTB LEFTB 8 Right 1 OFF 5 POWER Turbo S3 R12 1OM S4 SC 6 PT0074(10/01) SO 7 C12 .01u C11 4.7u V7 4148 R3 220K V4 4.7V CR1 27.145 V2 9014 R9 330 L1 2.2u R6 100 R4 6.8K R10 1K C8 .02u C9 68 R2 4.7K V1 9014 V3 LED R1 100 L2 2.2u V6 9013 C4 150 C6 .02u L3 R8 3.9K V5 8550 R11 10M A1 ANTENNA B1 9V Typical Application of PT8A977P/977W For Transmit Circuit With 9V Battery Ver:1 Data Sheet PT8A977P/977W/978P/978LW 5-Function Remote Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| V10 9013 9V R19 330 V14 8550 V12 8050 M2 R9 330 PT8A978P R23 1K C8 470 VI2 VO2 R6 2.2M R5 2.2K C9 .1u 2 R22 1K 1 R7 2.2K R4 2.2M R3 2.2K C7 .1u 3 C10 30 L1 2.2u C3 3000 C2 47 R1 1K C4 4.7u R8 200K R24 1K V2 9013 C5 .02u 4 C11 1000 R16 100 V8 9013 16 R21 1K R15 330 V4 8550 R13 220 V3 8050 V11 9013 V13 8550 M1 V6 8050 C17 .02U V15 8050 R25 1K R18 330 R17 100 C16 .02u R20 100 VD1 4.2V L2 SI GND 16 R2 180K OSCI VO1 15 V1 C1815 15 5 1 C18 100u V9 8550 V5 8550 VI1 OSCO 14 C6 18 14 6 2 R12 510 C14 .01u C12 100u Right 3 V CC 13 C1 4 Turbo 7 4 12 12 R10 4.3K Forward 11 C15 .01u Left 5 11 8 6 A1 Backward 10 C13 4.7u RD 9 10 13 PT0074(10/01) LD 8 9 7 C19 .1u V7 9013 R11 10 R14 220 S1 12V Typical Application of PT8A978P/978LW For Receive Circuit With Five Functions 9 Ver:1 Data Sheet PT8A977P/977W/978P/978LW 5-Function Remote Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Mechanical Diagram of 14-pin SOIC PT0074(10/01) 10 Ver:1 Data Sheet PT8A977P/977W/978P/978LW 5-Function Remote Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Mechanical Diagram of 16-pin SOIC PT0074(10/01) 11 Ver:1 Data Sheet PT8A977P/977W/978P/978LW 5-Function Remote Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Notes Pericom Technology Inc. Email: [email protected] Web Site: www.pti.com.cn, www.pti-ic.com 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. PT0074(10/01) 12 Ver:1