Data Sheet PT8A9701P/974P/974LP 8-Function Remote Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Features General Description • The PT8A9701P works as the encoder and the The PT8A9701P and PT8A974P/974LP is a pair of PT8A974P/974LP works as the decoder CMOS LSIs designed for remote controlled toy car • Nine output pins, 5 for forward, backward, left, application. They have eight control keys for right and turbo functions, and 3 functional keys controlling the corresponding motion, i.e., forward, • Operation power supply for PT8A9701: 3V to 12V backward, left, right, turbo and 3 functional keys, of (with series resistor) the remote controlled car. They also have ‘Forward • Auto power-off if no key pressed (PT8A9701P) (Backward)’ and ‘Turbo’ combination application. • Motor current limit to meet toy safety standard Ordering Information HD271 (PT8A974P/974LP) • Low operating current Device Na m e E n cod er • On-chip reversing amplifiers Part No. PT8A9701P • Built-in 3.7V Zener (Vz) (PT8A974P) and 3.1V Package 16-pin PDIP • On-chip oscillator with an external resistor Decod er PT8A974P PT8A974LP 20-pin PDIP Zener (Vz) (PT8A974LP) • Few external components needed Block Diagram Figure 1. Block Diagram of PT8A9701P f0/2 OSCI OSCO Forward Backward Left Right Turbo F1 F2 F3/F4 Oscillator Timing Generator Latch Circuit SC SO MUX VCC Logic Control PC Counters PT0090(09/02) 1 Ver:2 Data Sheet PT8A9701P/974P/974LP 8-Function Remote Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Figure 2. Block Diagram of PT8A974P/974LP OSCI OSCO Oscillator SI Amp VI1 VO1 VI2 VO2 Timing Generator Counter Decoding Circuit PLA Latch Circuit VT1 VT Detector VT2 VCC Right Left Backward Forward Turbo F1 F2 F3 F4 Package and Pin Assignment PT8A9701P 16-Pin PDIP Right NC GND Backward Forward Turbo SC F3/F4 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 PT8A974P/974LP 20-Pin PDIP VO2 GND SI OSCI OSCO F1 Right F2 Left VT1 Left F1 OSCI OSCO PC VCC SO F2 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 VI2 VO1 VI1 VCC Turbo F4 Forward F3 Backward VT2 Top View PT0090(09/02) 2 Ver:2 Data Sheet PT8A9701P/974P/974LP 8-Function Remote Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Pin Description Table 1. Pin Description of PT8A9701P P in No P in Na me Typ e 1 Right I Rightward function selected if this pin connected to GND 2 NC - No connection 3 GND GND 4 Backward I Backward function selected if this pin connected to GND 5 Forward I Forward function selected if this pin connected to GND 6 Turbo I Turbo function selected if this pin connected to GND 7 SC O Output pin of the encoding signal with carrier freqency 8 F3/F4 I Able to toggle between Function 3 and Function 4 if connected to GND 9 F2 I Function 2 selected if connected to GND 10 SO O Output pin of the encoding signal without carrier freqency 11 VCC P Power supply 12 PC O Power control output pin 13 OSCO O Oscillator output pin 14 OSCI I Oscillator input pin 15 F1 I Function 1 selected if connected to GND 16 Left I Leftward function selected if this pin connected to GND PT0090(09/02) Descr ip t ion Ground 3 Ver:2 Data Sheet PT8A9701P/974P/974LP 8-Function Remote Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Table 2. Pin Description of PT8A974P/974LP P in No P in Na me Typ e 1, 19 VO2, VO1 O 2 GND GND 3 SI I Input pin for encoded signal 4 OSCI I Oscillator input pin 5 OSCO O Oscillator output pin 6 F1 O F1 function output pin 7 Right O Rightward output pin 8 F2 O F2 function output pin 9 Left O Leftward output pin 10 VT1 I Auto shut-off input pin: If voltage on VT1 pin is over 0.095VCC for 3 sec, all outputs will be shut off automatically. 11 VT2 I Auto shut-off input pin: If voltage on VT2 pin is over 0.095VCC for 3 sec, all outputs will be shut off automatically. 12 Backward O Backward output pin 13 F3 O F3 function output pin 14 Forward O Forward output pin 15 F4 O F4 function output pin 16 Turbo O Turbo output pin 17 VCC P Power supply 18, 20 VI1,VI2 I Input pins of amplifiers 1 and 2 PT0090(09/02) Descr ip t ion Output pins of amplifiers 1 and 2 Ground 4 Ver:2 Data Sheet PT8A9701P/974P/974LP 8-Function Remote Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Functional Description Coding Method In normal operation without ‘Turbo’, forward (backward) output pin of the decoder PT8A974P/974LP sends out a 60Hz signal. In operation with ‘Forward (Backward)’ and ‘Turbo’ combined, the output signal will be completely high. This function is depicted in Table 3. Each trigger pin is triggered by corresponding bit of data in format of “1”. The data string is 16-bit and divided to four segments, i.e., Start Code, Data Code, Parity Code and End code, where Start Code = 11110. Data Code = F B T R L F1 F3 F4 F2 Timing Diagram F = Forward R = Right F2 = Function 2 Data Format B = Backward L = Left F3 = Function 3 T = Turbo F1= Function 1 F4 = Function4 Parity Code = Even parity check result End Code is for data latch. See Figure 4. Data code can be any combination of F, B, T, R, L, F1, F2, F3 and F4 except F&B and R&L. Table 3 O u t p u t fr om P T 8A974P /974L P I n p u t t o P T 8A970P Forward Backward Turbo Forward 60Hz Low Low Backward Low 60Hz Low Forward + Turbo High Low High Backward + Turbo Low High High Figure 4. Data Format PT0090(09/02) "1" Frequency: 500Hz, Duty Cycle: 3/4 "0" Frequency: 500Hz, Duty Cycle: 1/4 5 Ver:2 Data Sheet PT8A9701P/974P/974LP 8-Function Remote Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested) Maximum Ratings PT8A9701P Storage Temperature ....................................................................................................................................... -25oC to +85oC Ambient Temperature with Power Applied ........................................................................................................ 0oC to +70oC Supply Voltage to Ground Potential (Inputs & VCC Only) ................................................................................... -0.5 to +5.5V Supply Voltage to Ground Potential (Outputs & D/O Only) ............................................................................... -0.5 to +5.5V DC Input Voltage ............................................................................................................................................... -0.5 to +5.5V DC Output Current ....................................................................................................................................................... 20mA Power Dissipation ...................................................................................................................................................... 500mW Maximum Ratings PT8A974P Storage Temperature ....................................................................................................................................... -25oC to +85oC Ambient Temperature with Power Applied ........................................................................................................ 0oC to +70oC Supply Voltage to Ground Potential (Inputs & VCC Only) ................................................................................... -0.5 to +5.5V Supply Voltage to Ground Potential (Outputs & D/O Only) ............................................................................... -0.5 to +5.5V DC Input Voltage ............................................................................................................................................... -0.5 to +5.5V DC Output Current ....................................................................................................................................................... 30mA Power Dissipation ...................................................................................................................................................... 500mW Maximum Ratings PT8A974LP Storage Temperature ....................................................................................................................................... -25oC to +85oC Ambient Temperature with Power Applied ........................................................................................................ 0oC to +70oC Supply Voltage to Ground Potential (Inputs & VCC Only) ................................................................................... -0.5 to +5.0V Supply Voltage to Ground Potential (Outputs & D/O Only) ............................................................................... -0.5 to +5.0V DC Input Voltage ............................................................................................................................................... -0.5 to +5.0V DC Output Current ....................................................................................................................................................... 30mA Power Dissipation ...................................................................................................................................................... 500mW Note: Stresses greater than those listed under MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. PT0090(09/02) 6 Ver:2 Data Sheet PT8A9701P/974P/974LP 8-Function Remote Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Recommended Operation Conditions Table 4. Recommended Operation Conditions Sym ICC Descr ip t ion Min Ma x Un it s Supply Current for PT8A974P 30 mA Supply Current for PT8A974LP 30 mA VIH Input HIGH Voltage VIL Input LOW Voltage FOSC Oscillator Frequency 109 TA Operation Temperature 0 Typ 0.7VCC V 0 0.3VCC V 128 146 kHz O 70 C DC Electrical Characteristics Table 5. DC Electrical Characteristics of PT8A9701P Sym Descr ip t ion Test C on d it ion s Min Typ Ma x Un it s VZ Voltage of Zenner IZ = 2~30mA 3.4 3.7 4.0 V -3 -5 mA -3 -5 mA Output HIGH Current - PC Pin IOH IOL Output HIGH Currentl SC and SO Pins VOH = VCC-0.5V Output HIGH Current OSCO Pin -200 Output LOW Current - PC Pin 2 3 mA 2 3 mA Output LOW Currentl SC and SO Pins VOL = 0.5V Output LOW Current OSCO Pin IIH IIL Input HIGH Current Forward, Backward, Left, Right, Turbo, F1, F2, F3/F4 and OSCI Pins Input LOW Current Forward, Backward, Left, Right, Turbo, F1, F2 and F3/F4 Pins -1000 200 VIH = VCC -20 -40 uA 1000 uA 1 uA -100 uA -10 uA VIL = 0V Input LOW Current - OSCI Pin Note: These specifications apply for VCC = 3.5V and TA = 25 C, unless otherwise specified. O PT0090(09/02) 7 Ver:2 Data Sheet PT8A9701P/974P/974LP 8-Function Remote Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Table 6. DC Electrical Characteristics of PT8A974P/974LP Sym Descr ip t ion Test C on d it ion s Output HIGH Current VO1, VO2 and OSCO Pins IOH IOL Output HIGH Current Forward, Backward, Left and Right Pins Min -300 VOH = VCC-0.5V -3 Output LOW Current VO1, VO2 and OSCO Pins 200 IIL Input LOW Current - OSCI, VT1, VT2, VI1, VI2 and SI Pin -800 uA VOL = 0.5V 2 1000 uA 3 mA 2 3 Input HIGH Current - OSCI, VI1, VI2 and SI Pins Input HIGH Current - VT1 and VT2 Pins Un it s mA Output LOW Current F1, F2, F3 and F4 Pins IIH Ma x -3 Output HIGH Current Turbo, F1, F2, F3 and F4 Pins Output LOW Current Forward, Backward, Left, Right and Turbo Pins Typ 10 uA 50 uA -10 uA VIN = VCC VIN = 0V Over-Current Limit VT1 and VT2 Pins for 974P 0.30 0.40 V Over-Current Limit VT1 and VT2 Pins for 974LP 0.25 0.35 V Voltage of Zenner - VCC Pin of PT8A974P 3.4 3.7 4 V 2.8 3.1 3.4 V VT VZ Voltage of Zenner - VCC of PT8A974LP IZ = 2~30mA Note: These specifications apply for TA = 25°C, VCC = 3.5V (974P), VCC = 3.0V (974LP), unless otherwise specified. PT0090(09/02) 8 Ver:2 Data Sheet PT8A9701P/974P/974LP 8-Function Remote Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| AC Electrical Characteristics Table 7. AC Electrical Characteristics of PT8A9701P Sym Descr ip t ion Test C on d it ion s Min Typ Ma x Un it s fOSC (Note2) Oscillator Frequency Rf = 200kΩ 109 128 146 kHz tFUN Period of Function Code fOSC = 128kHz 1.7 2 2.3 ms tSTA Start-Code Period fOSC = 128kHz 1.7 2 2.3 ms fCSC Carrier Frequency fOSC = 128kHz 64 kHz tOFF Auto-off Time fOSC = 128kHz 2 s VCC Power Supply Range - ICC Supply Current Output Unloaded 3 9 12 V 30 mA Notes: 1. These specifications apply for VCC = 3.5V and TA = 25OC, unless otherwise specified. 2.The frequency of standard samples is tested on standard testing-board. Table 8. AC Electrical Characteristics of PT8A974P/974LP Sym Descr ip t ion Test C on d it ion s Min Typ Ma x Un it s fOSC (Note2) Oscillator Frequency Rf = 200kΩ 109 128 146 kHz tFUN Period of Function Code fOSC = 128kHz 1.7 2 2.3 ms tSTA Start-Code Period fOSC = 128kHz 1.7 2 2.3 ms ICC Supply Current Output Unloaded 30 mA Notes: 1. These specifications apply for TA = 25°C, VCC = 3.5V (974P), VCC = 3.0V (974LP), unless otherwise specified. 2. The frequency of standard samples is tested on standard testing-board. PT0090(09/02) 9 Ver:2 Data Sheet PT8A9701P/974P/974LP 8-Function Remote Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| C4 0.02u C8 150P R6 6.8K R5 100 Q1 C945P CR1 27.145MHz PT8A9701P 9 F2 F3/F4 10 SO SC 11 Vcc 12 PC 13 OSCO 14 OSCI 15 F1 16 Left 7 6 PT0090(09/02) 5 F Forward GND Test 3 2 1 R Right 4 B Backward L F1 R2 200K T Turbo 8 F3/F4 F2 C2 203 R1 470 R4 120K C7 47P L4 2.2uH D1 LED C6 47P R3 3.3K R7 33K C5 47 R8 100 Q2 C945 C3 47P L3 2.2uH C1 100uF L2 7 1/4T C9 100P L1 6.8uH 9V SW A1 ANTENNA B1 Figure 5. Typical Application Circuit of PT8A9701P 10 Ver:2 R1 11 12 13 14 15 16 17 18 19 20 VT2 Left VT1 Right F2 Backward F3 Forward Vcc Turbo SI OSCI OSCO F1 VI1 F4 VO1 VO2 GND PT8A974 VI2 11 10 9 8 7 6 5 4 3 2 1 Data Sheet PT8A9701P/974P/974LP 8-Function Remote Controller R5 R20 1K 104 R13 10K Q6 8050 R14 10K Q4 8050 R19 1K H1815 Q8 Q7 H1815 R8 C11 200K 222 2.2K R2 330 Q5 M3 8550 R15 10K Q3 8550 R3 330 Q16 D882 R18 10K Q20 D882 2.2K Q10 D882 R16 10K R24 1K R23 1K Q14 D882 R11 2.2M R21 104 104 R6 Q17 H1815 Q18 H1815 Q11 H1815 Q12 H1815 1K C9 R10 470P 2.2M R27 220 Q15 B772 Q19 B772 M2 R26 220 R28 220 Q9 B772 C7 104 SW Figure 6. Typical Application Circuit of PT8A974P R12 R17 10K Ver:2 ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| PT0090(09/02) Q1 C380 R22 1K C8 104 R7 3.3k Q13 B772 M1 R25 220 R9 2.2k R4 820 180K C6 4.7uF C2 103 B1 6V L2 L1 C3 47P 4.7uH 330 C12 220uF C10 104 C1 5P C5 47P 7T C4 472 ANTENNA 27MHz Data Sheet PT8A9701P/974P/974LP 8-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. PT0090(09/02) 12 Ver:2