TX-2B/RX-2C
TOY CAR REMOTE CONTROLLER WITH FIVE FUNCTIONS
DESCRIPTION
The TX-2B/RX-2C is a pair of CMOS LSIs designed for remote
controlled car applications. The TX-2B/RX-2C has five control keys for
controlling the motions (i.e. forward, backward, rightward, leftward and
the turbo function) of the remote controlled car.
DIP-14
RX-2C
TX-2BS
RX-2CS
TX-2B
FEATURES
* Wide operating voltage range (V
CC
=1.8V~5.0V when DC-DC is
not used and V
CC
=1.0V~5.0V when DC-DC is used)
* Low stand-by current
* In order to be used in the low voltage condition, the DC-DC is
added in RX-2C; you can decide whether to use DC-DC; the
voltage to turn on is 1.0V ; and the voltage to work is 0.8V ; and
the output voltage is 3.0V ;
* Auto-power-off function for TX-2B
* Few external components are needed
DIP-16
SOP-16
ORDERING INFORMATION
Device
TX-2B
TX-2BS
RX-2C
RX-2CS
Package
DIP-14-300-2.54
SOP-16-225-1.27
DIP-16-300-2.54
SOP-16-225-1.27
BLOCK DIAGRAM
FOSC
TEST B
13
OSCI
OSCO
2
12
Oscillator
11
Timing
Generator
RIGHT
LEFT
TURBO
FORWARD
BACKWARD
1
14
6
5
4
3
GND
9 V
DD
10
PC
Latch
Circuit
Encoding
Circuit
Logic
8
SO
7
SC
TRANSMITTER TX-2B Block Diagram
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.1
2008.06.12
Page 1 of 13
TX-2B/RX-2C
BLOCK DIAGRAM
(continued)
OSCI
OSCO
SI
4
Oscillator
Timing
generator
13 V
DD
5
3
AMP
Decoding
circuit
Counter
VO1
VI1
15
14
PLA
9 MOD
6
RIGHT
LX
8
DC-DC
7
LEFT
latch
12
TURBO
10
BACKWARD
11
FORWARD
2
GND
VO2
VI2
1
16
RECEIVER RX-2C Block Diagram
ABSOLUTE MAXIMUM RATINGS
Characteristics
Supply Voltage
Input / Output Voltage
Storage Temperature
Operating Temperature
Symbol
V
DC
V
I/O
T
stg
T
OPR
Value
0.3~6.0
GND-0.2~V
DD
+0.2
-10~60
-25~125
Unit
V
V
°C
°C
ELECTRICAL CHARACTERISTICS
1. TX-2B(V
DD
=4.5V, F
osc
=128 KHz, T
amb
=25°C, unless otherwise specified.)
Characteristics
Operating Voltage
Low Voltage input
Stand-By Current
Operating Current
SO Driving Current
SC Driving Current
PC Driving Current
Tolerance of frequency
Symbol
V
DD
V
IL
I
STB
I
DD
I
DRSO
I
DRSC
I
DRPC
F
tolerance
Function input pin
No input
Output without load
Load=0.7V
Load=0.7V
Load=0.7V
RX-2C oscillator 128KHz
Test conditions
Min.
1.8
--
--
--
20
20
15
-20
+20
Typ.
4.5
--
--
--
Max.
5.0
2.3
3.0
0.4
Unit
V
V
μA
mA
mA
mA
mA
%
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.1
2008.06.12
Page 2 of 13
TX-2B/RX-2C
2. RX-2C (V
DD
=4.0V, F
osc
=128KHz, T
amb
=25°C, DC-DC is not used, unless otherwise specified.)
Characteristics
Operating Voltage
Operating Current
Driving Current
Tolerance of frequency
Symbol
V
DD
I
DD
I
drive
F
tolerance
Output without load
Load=0.7V
TX-2B 128KHz
Test conditions
Min.
1.8
--
4.5
-20
Typ.
4.5
--
--
Max.
5.0
1.0
--
+20
Unit
V
mA
mA
%
PIN CONFIGURATION
PIN DESCRIPTION
1. TX-2B/TX-2BS
Pin No.
TX-2B
1
2
3
4
5
6
7
--
8
9
10
11
12
13
14
TX-2BS
1
2
3
4
5
6
7
8, 9
10
11
12
13
14
15
16
Symbol
RIGHT
TEST
GND
BACKWARD
FORWARD
TURBO
SC
NC
SO
V
DD
PC
OSCO
OSCI
FOSC
LEFT
Description
The rightward function will be selected, if this pin is connected to GND
test pin
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
The turbo function will be selected if this pin is connected to GND
Output pin of the encoding signal with carrier frequency
Not connect
Output pin of the encoding signal without carrier frequency
Positive power supply
Power control output pin
Oscillator output pin
Oscillator input pin
Oscillate frequency output
The leftward function will be selected, if this pin is connected to GND
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.1
2008.06.12
Page 3 of 13
TX-2B/RX-2C
2. RX-2C
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
LX
MOD
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
DC-DC output pin
Output pin (pull up) to decide the format of output sign, RX-2C is same with
RX2 if the pin is high, and if the pin is low, RX-2C output another sign format.
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
Description
Inverter 2 output pin for power amplify
FUNCTION DESCRIPTION
CODE FORMAT
1. ENCODE RULE
(A).Bit Forma (W1 is used for function codes, W2 for start codes)
1KHz
W1
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
function code
1 word
n x W1
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.1
2008.06.12
Page 4 of 13
TX-2B/RX-2C
Number Of Function Code (N) W1
4
10
16
22
28
34
40
46
52
58
64
2. ENCODE/DECODE TIMING
(A)
Forward
Forward & Turbo
Turbo
Turbo & Forward & Left
Turbo & Forward & Right
Backward
Backward & Right
Backward & Left
Left
Right
Function Key
Decode Result
End Code
Forward
Forward
Turbo
Forward & Left
Forward & Right
Backward
Backward & Right
Backward & Left
Left
Right
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
(B)
SI
8ms
(n) W1
8ms
1ms
Decode output
T
T=17ms+(nW1)x1ms
FUNCTION
Function key（TX-2B）
forward
Forward and turbo
turbo
Forward and turbo and left
①
command（RX-2C,MOD=1）
Over code
forward
forward
turbo
Forward and left
②
Command(RX-2C,MOD=0)
Over code
③
Forward pulse（50Hz 50%Duty）
Forward and turbo
Forward and turbo
Forward and left
Forward pulse（50Hz 50%Duty）
(To be continued)
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.1
2008.06.12
Page 5 of 13
电源技术
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
