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Data Sheet PT8A9702/973/973L/974/974L 8-Direction Remote Controller
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Features
* The PT8A9702 works as the encoder and the PT8A973/974/973L/974L works as the decoder * 8-direction control * Operation power supply for PT8A9702: 3V to 12V (with series resistor) * Auto power-off if no key pressed (PT8A9702) * Motor www..com current limit to meet toy safety standard HD271 (PT8A973/974/973L/974L) * Low operating current * On-chip oscillator with an external resistor * On-chip reversing amplifiers * Built-in 3.8V Zener (9702), 3.7V Zener (Vz) (973/974) and 3.1V Zener (Vz) (973L/974L)
* Few external components needed * Pin to pin compatible with TX6/RX6
General Description
The PT8A9702P works as encoder, it can provide 8direction remote control for toy car application with PT8A973/973L/PT8A974/974L together. Input 8direction named F, FL, L, BL, BR, R, FR, and B they are combined with F, L, B, and R four signals. In decoder side, use output signal Left & Right to drive Right Motor, and use For & Back to drive Left Motor. Their detail relations please see truth table.
Ordering Information
Device Na me Part No. Package E n cod er PT8A9702P 16-pin PDIP PT8A973P PT8A973LP Decod er PT8A974P PT8A974LP 20-pin PDIP
18-pin PDIP
Block Diagram
Block Diagram of PT8A9702
f0/2 OSCI OSCO f0
Oscillator
Timing Generator
SC
MUX
SO
om .c 4u et he as at .d w w w
Forward Backward Left Right F1 F2 F3/F4
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Latch Circuit
Logic Control
PC
VCC
Counters
1
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Data Sheet PT8A9702/973/973L/974/974L 8-Direction Remote Controller
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Block Diagram of PT8A973/973L
OSCI OSCO SI
Oscillator
Timing Generator Decoding Circuit
Counter
VCC
Amp
PLA
VI1 VI2
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VO1 VO2
LRTD VT1
Control Logic
Latch Circuit
Right Left Backward Forward Turbo F1 F2
Block Diagram of PT8A974P/974LP
OSCI OSCO SI
Oscillator
Timing Generator Decoding Circuit
Counter
VCC
Amp
PLA
Right Left Backward Forward Turbo F1 F2 F3 F4
VI1 VI2 VT1 VT2
VO1 VO2
VT Detector
Latch Circuit
Pin Configuration
PT8A9702P 16-Pin PDIP Right NC GND Backward Forward NC SC F3/F4 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 Left F1 OSCI OSCO PC VCC SO F2 VO2 GND SI OSCI OSCO F1 Right F2 Left PT8A973P/973LP 18-Pin PDIP 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 Top View
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PT8A974P/974LP 20-Pin PDIP VI2 VO1 VI1 VCC Turbo Forward Backward LRTD VT1 VO2 GND SI OSCI OSCO F1 Right F2 Left VT1 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
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Data Sheet PT8A9702/973/973L/974/974L 8-Direction Remote Controller
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Pin Description
Pin Description of PT8A9702
P in No 1 2, 6 3 4
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P in /Pa d Na me
Right NC GND Backward Forward SC F3/F4 F2 SO VCC PC OSCO OSCI F1 Left
Typ e
I GND I I O I I O P O O I I I
Descr ip t ion Rightward function selected if this pin connected to GND No connection Ground Backward function selected if this pin connected to GND Forward function selected if this pin connected to GND Output pin of the encoding signal with carrier freqency Able to toggle between Function 3 and Function 4 if connected to GND Function 2 selected if connected to GND Output pin of the encoding signal without carrier freqency Power supply Power control output pin Oscillator output pin Oscillator input pin Function 1 selected if connected to GND Leftward function selected if this pin connected to GND
5 7 8 9 10 11 12 13 14 15 16
Truth Table
Forward 0 0 1 1 1 1 1 0
Input of 9702 Backw ard Right 1 1 1 1 1 1 0 1 0 1 0 0 1 0 1 0
Left 1 0 0 0 1 1 1 1
O utput of 973/973L/974/974L Forward Backw ard Right Left H L H L L L H L L H H L L L L H L H L H L H L L H L L H H L L L Left M otor Right M otor
* N ote: 0 -- active, 1 -- inactive.
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Data Sheet PT8A9702/973/973L/974/974L 8-Direction Remote Controller
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Pin Description of PT8A973/973L
P in No 1, 17 2 3 4 5
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P in /Pa d Na me VO2, VO1 GND SI OSCI OSCO F1 Right F2 Left VT1 LRTD Backward Forward Turbo VCC VI1,VI2
Typ e O GND I I O O O O O I I O O O P I Output pins of amplifiers 1 and 2 Ground Input pin for encoded signal Oscillator input pin Oscillator output pin F1 function output pin Rightward output pin F2 function output pin Leftward output pin
Descr ip t ion
6
7 8 9 10 11 12 13 14 15 16, 18
Auto shut-off input pin: If voltage on VT1 pin is over 0.095VCC for 3 sec, all outputs will be shut off automatically. Left/Right turbo disable pin Backward output pin Forward output pin Turbo output pin Power supply Input pins of amplifiers 1 and 2
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Data Sheet PT8A9702/973/973L/974/974L 8-Direction Remote Controller
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Pin Description of PT8A974P/974LP
P in No 1, 19 2 3 4 5
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P in Na me VO2, VO1 GND SI OSCI OSCO F1 Right F2 Left VT1 VT2 Backward F3 Forward F4 Turbo VCC VI1,VI2
Typ e O GND I I O O O O O I I O O O O O P I Output pins of amplifiers 1 and 2 Ground Input pin for encoded signal Oscillator input pin Oscillator output pin F1 function output pin Rightward output pin F2 function output pin Leftward output pin
Descr ip t ion
6
7 8 9 10 11 12 13 14 15 16 17 18, 20
Auto shut-off input pin: If voltage on VT1 pin is over 0.095VCC for 3 sec, all outputs will be shut off automatically. Auto shut-off input pin: If voltage on VT2 pin is over 0.095VCC for 3 sec, all outputs will be shut off automatically. Backward output pin F3 function output pin Forward output pin F4 function output pin Turbo output pin Power supply Input pins of amplifiers 1 and 2
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Data Sheet PT8A9702/973/973L/974/974L 8-Direction Remote Controller
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Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested)
Maximum Ratings PT8A9702
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 www..com Dissipation ...................................................................................................................................................... 500mW
Maximum Ratings PT8A973/974
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 PT8A973L/974L
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.
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Data Sheet PT8A9702/973/973L/974/974L 8-Direction Remote Controller
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Recommended Operating Conditions
Recommended Operating Conditions
Sym ICC VIH V www..com IL FOSC TA Descr ip t ion Supply Current for PT8A973/974 Supply Current for PT8A973L/974L Input HIGH Voltage Input LOW Voltage Oscillator Frequency Operation Temperature 109 0 0.7VCC 0 128 0.3VCC 146 70 Min Typ Ma x 30 30 Un it s mA mA V V kHz
O
C
DC Electrical Characteristics
DC Electrical Characteristics of PT8A9702
Sym ICC VZ Descr ip t ion Supply Current Voltage of Zenner Output HIGH Current - PC Pin IOH Output HIGH Currentl SC and SO Pins Output HIGH Current OSCO Pin Output LOW Current - PC Pin IOL Output LOW Currentl SC and SO Pins Output LOW Current OSCO Pin IIH Input HIGH Current Forward, Backward, Left, Right, F1, F2, F3/F4 and OSCI Pins Input LOW Current Forward, Backward, Left, Right, F1, F2 and F3/F4 Pins Input LOW Current - OSCI Pin VIH = VCC VOL = 0.5V VOH = VCC-0.5V Test C on d it ion s Output Unloaded IZ = 2~30mA 3.4 -3 -3 -200 2 2 200 3 3 1000 3.7 -5 -5 -1000 Min Typ Ma x 30 4.0 Un it s mA V mA mA uA mA mA uA
1
uA
-20 VIL = 0V
-40
-100 -10
uA uA
IIL
Note: These specifications apply for VCC = 3.5V and TA = 25OC, unless otherwise specified.
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Data Sheet PT8A9702/973/973L/974/974L 8-Direction Remote Controller
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DC Electrical Characteristics of PT8A973/973L/974/974L
Sym ICC Descr ip t ion Supply Current Output HIGH Current VO1, VO2 and OSCO Pins IOH Output HIGH Current Forward, Backward, Left and Right Pins Output HIGH Current Turbo, F1 and F2 Pins Output LOW Current VO1, VO2 and OSCO Pins IOL Output LOW Current Forward, Backward, Left, Right and Turbo Pins Output LOW Current F1 and F2 Pins Input HIGH Current - OSCI, VI1, VI2 ,LRTD and SI Pins Input HIGH Current -VT1 Input LOW Current - OSCI, VT1, VI1, VI2 and SI Pins IIL Input LOW Current - LRTD Pins Over-Current Limit VT1 Pins for PT8A973/974 VT Over-Current Limit VT1 Pins for PT8A973L/974L Voltage of Zenner PT8A973/974 VZ Voltage of Zenner PT8A973L/974L IZ = 2~30mA 2.8 3.1 3.4 V 0.25 3.4 3.7 0.35 4 V V VIN = 0V -50 0.30 0.40 uA V VOL = 0.5V VOH = VCC-0.5V Test C on d it ion s Output Unloaded 300 Min Typ Ma x 30 800 Un it s mA uA
-3 mA -3 200 1000 uA
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2
3 mA
2
3 10 uA uA uA
IIH
VIN = VCC 50 -10
Note: These specifications apply for TA = 25C,VCC = 3.5V (973/974), VCC = 3.0V (973L/974L),unless otherwise specified.
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Data Sheet PT8A9702/973/973L/974/974L 8-Direction Remote Controller
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AC Electrical Characteristics
AC Electrical Characteristics of PT8A9702
Sym fOSC (Note2) tFUN tSTA
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Descr ip t ion Oscillator Frequency Period of Function Code Start-Code Period Carrier Frequency
Test C on d it ion s Rf = 200k fOSC = 128kHz fOSC = 128kHz fOSC = 128kHz
Min 109 1.7 1.7
Typ 128 2 2 64
Ma x 146 2.3 2.3
Un it s kHz ms ms kHz
fCSC
Note: 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.
AC Electrical Characteristics of PT8A973/973L/974/974L
Sym fOSC (Note2) tFUN tSTA Descr ip t ion Oscillator Frequency Period of Function Code Start-Code Period Test C on d it ion s Rf = 200k fOSC = 128kHz fOSC = 128kHz Min 109 1.7 1.7 Typ 128 2 2 Ma x 146 2.3 2.3 Un it s kHz ms ms
Notes: 1. These specifications apply for TA = 25C, VCC = 3.5V (973/974), VCC = 3.0V (973L/974L),unless otherwise specified. 2. The frequency of standard samples is tested on standard testing-board.
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Data Sheet PT8A9702/973/973L/974/974L 8-Direction Remote Controller
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Typical Application Circuit of PT8A9702
10P C8 100P
L3
C9
C5
47P
L2 22U C7 0.02u
Q1 9014H
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R4 15k
L1 22U
C3
47P
C2 47P
C4 47P CRYSTAL1 R6 1K R2 56K
R5 100 8 7 6 5 4 3 2 1 Left Back Q2 9014H R3 100
C10 0.1U
LED1
PT8A9702
9 10 11 12 F2 SO Vcc PC F3/F4 SC NC Forward
K2
R1 200k
13 14 K1 15 16
O S C O Backward OSCI F1 Left GND NC Right
R7 *
C1 0.1U
SW1
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For
Right
27M
C6 0.02U
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Data Sheet PT8A9702/973/973L/974/974L 8-Direction Remote Controller
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Typical Application Circuit of PT8A973
SW
B1 6V
R24 1K
Q15 Q19 B772 M2 B772
Q17 H1815
Q18 H1815
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R26 220
R23 1K
R18 10K
Q20 D882
104
Q16 D882
R17 10K
R27 220
R28 220
R15 10K
R20 1K Q5 M3 8550 H1815 Q8 Q3 8550 Q7 H1815 R16 10K R2 330
10 11 12
R22 1K
Q9 B772
Q11 H1815
Q10 D882
Q13 B772 M1
R1
330
104
C12 220uF
Q12 H1815
Q14 D882
C10 104
R25 220
R21
1K
VT LRTD Backward Forward Turbo Vcc VI1 VO1 VI2
Left F2 Right F1 OSCO OSCI SI GND VO2
9 8 7 6 5 4 3 2 1
R7 3.3k
13 14
C3 47P
R9 2.2k
C7 104
15 16 17 18
ANTENNA
R10 2.2M
C2 103
180K C6 4.7uF
R12
C9 470P
C5 47P
Q1 C380
2.2K
PT8A973
R11 2.2M
R4 820
R6
27MHz
4.7uH
L1
PT0097(11/02)
C4 472
C8 104
2.2K
L2
C1 5P
7T
R5
R8 C11 200K 222
R19 1K
R14 10K
Q4 8050
104
Q6 8050
R13 10K
R3 330
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Data Sheet PT8A9702/973/973L/974/974L 8-Direction Remote Controller
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Typical Application Circuit of PT8A974P
SW
B1 6V
R24 1K
Q15 B772
Q17 H1815
Q19 B772 M2
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Q18 H1815
R26 220
R23 1K
R18 10K
Q20 D882
104
Q16 D882
R17 10K
R27 220
R28 220
R15 10K
R20 1K Q5 M3 8550 H1815 Q8 Q3 8550 Q7 H1815 R16 10K R2 330
11 12 13 14
R22 1K
Q9 B772
Q11 H1815
Q10 D882
Q13 B772 M1
R1
330
104
C12 220uF
Q12 H1815
Q14 D882
C10 104
R25 220
R21
1K
VT2 Backward F3 Forward F4 Turbo Vcc VI1 VO1 VI2
VT1 Left F2 Right F1 OSCO OSCI SI GND VO2
10 9 8 7 6 5 4 3 2 1
R7 3.3k
15 16
C3 47P
R9 2.2k
C7 104
17 18 19 20
ANTENNA
C9 R10 470P 2.2M
180K C6 4.7uF
R12
C2 103
C5 47P
Q1 C380
2.2K
PT8A974
R11 2.2M
R4 820
R6
27MHz
4.7uH
L1
PT0097(11/02)
C4 472
C8 104
2.2K
L2
C1 5P
7T
R5
R8 C11 200K 222
R19 1K
R14 10K
Q4 8050
104
Q6 8050
R13 10K
R3 330
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Data Sheet PT8A9702/973/973L/974/974L 8-Direction Remote Controller
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Notes
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Pericom Technology Inc.
Email: support@pti.com.cn China: Asia Pacific: U.S.A.: Web Site: www.pti.com.cn, www.pti-ic.com No. 20 Building, 3/F, 481 Guiping Road, Shanghai, 200233, China Tel: (86)-21-6485 0576 Fax: (86)-21-6485 2181 Unit 1517, 15/F, Chevalier Commercial Centre, 8 Wang Hoi Rd, Kowloon Bay, Hongkong Tel: (852)-2243 3660 Fax: (852)- 2243 3667 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. PT0097(11/02)
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