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Silan Semiconductors
REMOTE CONTROLLER WITH FIVE FUNCTIONS
DESCRIPTION
The TX-2B/RX-2B is a pair of CMOS LSIs designed for remote controlled car applications. The TX-2B/RX-2B has five control keys for controlling the motions (i.e. forward, backward, rightward, leftward and the turbo function ) of the remote controlled car.
TX-2B/RX-2B
DIP-14 TX-2B
FEATURES
* Wide operating voltage range (VCC=1.5~5.0V) * Low stand-by current * Auto-power-off function for TX-2B * Few external components are needed
RX-2B
DIP-16
ORDERING INFORMATION
Part No.
TX-2B RX-2B
Package
DIP-14-300-2.54 DIP-16-300-2.54
BLOCK DIAGRAM
FOSC TEST B
13
OSCI
2
12 Oscillator 11 Timing Generator
OSCO
RIGHT
1 14 6 5 4 3
GND
9 VDD
LEFT
10 PC Latch Circuit Encoding Circuit Logic 8 SO 7 SC
TURBO
FORWARD
BACKWARD
TRANSMITTER TX-2B Block Diagram
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2002.03.29
1
Silan Semiconductors
BLOCK DIAGRAM
OSCI
TX-2B/RX-2B
4
Oscillator
Timing Generator
13 VDD
OSCO
5 3 15
PLA AMP Decoding Circuit Computer
SI
VO1 VI1 LDB
14 9
Control Logic
6 RIGHT 7 LEFT
Latch Circuit
RDB
8 16 1 2
GND
12 TURBO 10 BACKWARD 11 FORWARD
VI2 VO2
RECEIVER RX-2B Block Diagram
PIN CONFIGURATION
RIGHT TEST GND ACKWARD FORWARD TURBO SC 1 2 3 4 5 6 7 14 13 12 11 10 9 8 LEFT FOSC OSCI OSCO PC VDD SO VO2 GND SI OSCI OSCO RIGHT LEFT ROB 1 2 3 4 5 6 7 8 16 15 14 VI2 VO1 VI1 VDD TURBO FORWARD BACKWARD LDB
TX-2B
RX-2B
13 12 11 10 9
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2002.03.29
2
Silan Semiconductors
ABSOLUTE MAXIMUM RATINGS
Characteristic
Supply Voltage Input / Output Voltage Operating Temperature Storage Temperature
TX-2B/RX-2B
Symbol
VDD VIN, VOUT TOPR Tstg
Value
0.3~5.0 GND-0.3~VDD+0.3 -10~65 -25~125
Unit
V V C C
ELECTRICAL CHARACTERISTICS
1. TX-2B (VDD=4.0V, Fosc=128KHz, Tamb =25C, unless otherwise specified.)
Characteristic
Operating Voltage Operating Current Stand-By Current DC O/P Driving Current AC O/P Driving Current AC O/P Frequency
Symbol
VDD IDD ISTB Idrive Idrive Faudio
Min
1.5 --5 5 0.5
Typ
4.0 ------
Max
5.0 2.0 10 --1.0
Unit
V mA A mA mA kHz
2. RX-2B (VDD=4.0V,Fosc=128KHz, Tamb=25C, unless otherwise specified.) characteristic
Operating Voltage Operating Current O/P Driving Current O/P Sinking Current Effect Decoding Frequency Variation
Symbol
VDD IDD Idrive Isink Ftolerance
Min
1.5 -1 1 -20
Typ
4.0 -----
Max
5.0 3.0 --20
Unit
V mA mA mA %
PIN DESCRIPTION
1. TX-2B
Pin No.
1 2 3 4 5
Symbol
RIGHT TEST GND BACKWARD FORWARD
Description
The rightward function will be selected, if this pin is connected to GND This pin is used for testing mode 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 (To be continued)
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2002.03.29
3
Silan Semiconductors
(Continued)
TX-2B/RX-2B
Description
Pin No.
6 7 8 9 10 11 12 13 14
Symbol
TURBO SC SO VDD PC OSCO OSCI FOSC LEFT
The turbo function will be selected if this pin is connected to GND Output pin of the encoding signal with carrier frequency Output pin of the encoding signal without carrier frequency Positive power supply Power control output pin Oscillator output pin Oscillator input pin This pin is used for testing mode The leftward function will be selected, if this pin is connected to GND
2. RX-2B
Pin No.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Symbol
VO2 GND SI OSCI OSCO RIGHT LEFT ROB LDB BACKWARD FORWARD TURBO VDD VI1 VO1 VI2 Negative power supply Input pin of the encoding signal Oscillator input pin Oscillator output pin Rightward output pin Leftward output pin
Description
Inverter 2 output pin for power amplify
Rightward function disable, if this pin is connected to GND Leftward function disable, if this pin is connected to GND Backward output pin Forward output pin TURBO output pin Positive power supply Inverter 1 input pin for power amplify Inverter 1 output pin for power amplify Inverter 2 input pin for power amplify
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2002.03.29
4
Silan Semiconductors
CODE FORMAT
1. ENCODE RULE
(A).Bit Format (W1 is used for function codes,W2 for start codes)
1KHz W1
TX-2B/RX-2B
1KHz 50% Duty cycle
W2 500Hz 75% Duty cycle
(B).Date Format
W2 W2 W2 W2 (n) X W1 W2 W2 W2 W2 (n) X W1 W2 W2 W2 W2
W2
W2
W2
W2
1
W1
2
W1
3
W1
4
W1 W1 n-th
W2
W2
W2
W2 W1
1
2
start code
3
4
n x W1
function code 1 word
Number Of Function Code (N) W1
4 10 16 22 28 34 40 46 52 58 64
Function Key
Forward Forward & Turbo Turbo Turbo & Forward & Left Turbo & Forward & Right Backward Backward & Right Backward & Left Left Right
Decode Result
End Code Forward Forward Turbo Forward & Left Forward & Right Backward Backward & Right Backward & Left Left Right
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2002.03.29
5
Silan Semiconductors
2. ENCODE/DECODE TIMING
TX-2B/RX-2B
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
SI 8ms (n) W1 8ms 1ms
Decode output
T
T=17ms+(nW1)x1ms
TESTING CIRCUIT
(The oscillator frequency of TX-2B, RX-2B is 128KHz, the oscillator resistor is 160K and 250K respectively)
forward turbo fosc=128kHz backward 12 11 10 9 5 6 7 8 right
VCC=3V
14 F
13
12
11
10
9
8
16
15
14
13
100
TX-2B
1 2 3 4 backward 5 forward 6 turbo 7 1 2 3
RX-2B
4
right
left
fosc=128kHz
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2002.03.29
6
left
Silan Semiconductors
TYPICAL APPLICATION CIRCUIT
TRANSMITTER
TX-2B/RX-2B
VCC Rosc=500k R.F. SI CIRCUIT
14
13
12
11
10
9
8
TX-2B
1 2 3 backward 4 forward 5 6 turbo 7
RECEIVER
left
right
power switch 16 100F 4.3V VCC R.F. CIRCUIT 500k 1 2 3 15 14 13 12 11 10 9
RX-2B
4 5 6 7 8
GND
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2002.03.29
7
Silan Semiconductors
INFRARED APPLICATION CIRCUIT
TRANSMITTER
DC:3V F
TX-2B/RX-2B
100
fosc=114kHz 1~4.7 14 13 12 11 10 9 8 Photo Diode 5 Frontwar d 6 7 Turbo C8050
11 10 9 100K VDD OUT 1 2 3 4 5 6 7 8 1815 IR Receiver
TX-2B
1 2 3 Backw ard
14 13 12
4
RECEIVER
DC:5V F
16
15
Right
Left
RX-2B
100
fosc=114KHz GND
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2002.03.29
8
Silan Semiconductors
RECOMMENDED APPLICATION CIRCUIT
R L
TX-2B/RX-2B
VDD=9V
LED
1 2 3
B
14 13
Rosc=160K
1.5k 203P
220k
390
12
4
F
TX-2B
11 10
XTAL 27MHz
L1 2.2H 47P
L2 2.2H 151P
L4 6.8H L3
7T 0.3mm () x 5mm(Core)
5
TURBO
Q1 C945 47 F 203P 100
68P
151P
7
8
C2 47P
C3 18P
L2
Q1 180k
7T 0.3mm () x 5mm(Core) 3.3k 220F /16V 3.0V
VDD1=12V,R=330 VDD1=9V,R=220 1N4148 470F /16V
Q1: C9018,C1815,C380,C382 Q2,Q3,Q4: 5610,C8550,B772 Q5,Q6: C8050,5609,D882 Q7,Q8: B564,C8550,B772 Q9,Q10: D471,C8050,D882
100F /16V 104P
L1 1.1 F
4P
203P
3.0V
33K
100
C1 102P
C4 203P
F
820
R2
104P 3.3k
4.7
Q3
3.9MO 203P
103P
1k 330 1k
1
3.3k
16
390
R1 C945 C945
Q2
Q4
R2 C945
M
Q5 473P Q6
2 3
15
501P
222P
14 13
3.9M
1kO
Rosc=250K
4
RX-2B
5
right
12 11 10 9
turbo
R1,R2,R3,R4=80~150,are changeable with the VDD1 and VDD2.
6 7 8
forward
left
backward
R3 Q7 1k C945 Q9 Q8 R4 1k C945 Q10
M
473P
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2002.03.29
9
103P
VDD1 VDD2
68P
6
9
Q2 C945
Silan Semiconductors
PACKAGE OUTLINE
TX-2B/RX-2B
UNIT: mm
2.54 0.05
DIP-14-300-2.54
0.25
6.35B
1.52 19.55B0.3 15 degree
0.5MIN
0.46B0.08
2.40MAX
DIP-16-300-2.54
2.54
3.00MIN
4.36MAX
7.62
0.25
6.35B
19.55B0.3
1.52
7.62
15 degree
0.5MIN
0.99B0.3
0.46B0.08
1.27MAX
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2002.03.29
10
3.00MIN
4.36MAX
0.25B
0.05
0.25B
UNIT: mm

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