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 (V
CC
=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
Timing
Generator
OSCO
11
RIGHT
1
14
6
5
4
3
GND
9 V
DD
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 V
DD
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
V
DD
SO
VO2
GND
SI
OSCI
OSCO
RIGHT
LEFT
ROB
1
2
3
4
5
6
7
8
16
15
14
VI2
VO1
VI1
V
DD
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
V
DD
V
IN
, V
OUT
T
OPR
T
stg
Value
0.3~5.0
GND-0.3~V
DD
+0.3
-10~65
-25~125
Unit
V
V
°C
°C
ELECTRICAL CHARACTERISTICS
1. TX-2B
(
V
DD
=4.0V, F
osc
=128KHz, T
amb
=25°C, 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
V
DD
I
DD
I
STB
I
drive
I
drive
F
audio
Min
1.5
--
--
5
5
0.5
Typ
4.0
--
--
--
--
--
Max
5.0
2.0
10
--
--
1.0
Unit
V
mA
µA
mA
mA
kHz
2. RX-2B
(V
DD
=4.0V,F
osc
=128KHz, T
amb
=25°C, unless otherwise specified.)
characteristic
Operating Voltage
Operating Current
O/P Driving Current
O/P Sinking Current
Effect Decoding Frequency Variation
Symbol
V
DD
I
DD
I
drive
I
sink
F
tolerance
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
V
DD
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
V
DD
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
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