Datasheet

UNISONIC TECHNOLOGIES CO., LTD
RCT6
CMOS IC
REMOTE CONTROLLER WITH
SEVEN FUNCTIONS

DESCRIPTION
The UTC RCT6 is a pair of CMOS LSIs designed for remote
controlled car applications. The UTC RCT6 have seven control keys
controlling the motions (i.e. forward, backward, rightward, leftward,
two function keys, and the turbo function) of the remote controlled
car. UTC RCT6 have Forward (Backward) combined with the turbo
application. The UTC RCT6 is the sending electric circuit.

DIP-16
FEATURES
* Operating voltage range: 2.0V ~ 5.0V
* RCT6-A built-in 3.6V ZENER
RCT6-B built-in 4.2V ZENER
RCT6-C built-in 5.0V ZENER
* Very low Stand-by current
* Few external components needed
* 7-function remote controller controlling Forward/Backward/Turbo/
Right-turn/Left turn/two function keys

ORDERING INFORMATION
Order Number
Lead Free
RCT6L-x-D16-T

Halogen Free
RCT6G-x-D16-T
Package
Packing
DIP-16
Tube
MARKING
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Copyright © 2015 Unisonic Technologies Co., Ltd
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RCT6


CMOS IC
PIN CONFIGURATIONS
PIN DESCRIPTION
PIN NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
PIN NAME
RIGHTB
NC
GND
BACKWARDB
FORWARDB
TURBOB
SC
NC
F2B
SO
VDD
PC
OSCO
OSCI
F1B
LEFTB
DESCRIPTION
The rightward function will be selected when this pin is connected to GND
No Connection
Negative power supply
The backward function will be selected when this pin is connected to GND
The forward function will be selected when this pin is connected to GND
The turbo function will be selected when this pin is connected to GND
Output pin of the encoding signal with carrier frequency
No connection
F2 function select
Output pin of the encoding signal without carrier frequency
Positive power supply
Power control output pin
Oscillator output pin
Oscillator input pin
F1 function select
The leftward function will be selected when this pin is connected to GND.
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RCT6

CMOS IC
BLOCK DIAGRAM
O/P Condition
Forward
Backward
Turbo
Forward
= 60Hz
Low
Low
Backward
Low
= 60Hz
Low
Forward + turbo
= high
Low
= high
Backward + turbo
Low
= high
= high
An Auto Shut-Off mechanism is built-in according to Toy Safety Requirement and effective during over-current
situation in motor driver. The active high input applying to this Auto Shut-Off pin will turn off the motor. (VT pin, when
unused, has to be connected to ground. The transfer point = 1.4V)
Input Condition
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RCT6

CMOS IC
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
RATINGS
UNIT
DC Supply Voltage
VDD
2.0 ~ 5.0
V
Input/Output Voltage
GND -0.2 ~ VDD + 0.2
V
Operating Temperature
TOPR
-20 ~ +85
°C
Storage Temperature
TSTG
-40 ~ +150
°C
Note: Absolute maximum ratings and operation rating recommended are those values beyond which the device
could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device
operation is not implied.

ELECTRICAL CHARACTERISTICS (VDD=3.5V, TA=25°C, unless otherwise specified.)
PARAMETER
Operating Voltage
Supply Current
Stand-by Current
SO O/P Driving Current (RF)
AC O/P Frequency
Oscillator Frequency
Oscillator Frequency Tolerance
SYMBOL
VOPR
IDD
ISTN-BY
IDRSO
FAUDIO
FOSC
Ftolerance
UNISONIC TECHNOLOGIES CO., LTD
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TEST CONDITIONS
Unload
MIN
3
TYP
RCT6-A
RCT6-B
RCT6-C
Unload
VOH = 0.7V
UTC RCR6 FOSC=128KHz
10
500
128
-20
MAX UNIT
5
V
15
mA
0.6
mA
0.4
mA
1
mA
mA
Hz
KHz
+20
%
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CMOS IC
DATA FORMAT
500Hz, 3/4 duty
F1 = "1"
500Hz, 1/4 duty
F0 = "0"

CODING METHOD
The data string that UTC RCT6 receives is below:
Data string: start code + data code + parity code + end code
- start code = F1 F1 F1 F1 F0
- data code =
F
B
T
R
L
F1
N
N
F2
F = Forward
B = Backward
T = Turbo
R = Right
L = Left
F1 = Function 1
F2 = Function 2
N = No used code
F、B、T、R、L、F1、N、N、F2 all can have two date format, ”F1” or ”F0”,
“F1” means the function is in effect, and “F0” means not.
- parity code = for parity check
- end code = for (latch data)
* Data code can be any combination of F, B, T, R, L, F1, F2, except for F & B, and R & L.
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CMOS IC
OUTPUT TABLES
FUNCTION
F
Z
Z
Z
B
OUTPUT STATUS
T
R
L
F1
F2
FORWARD
Blank=0
LEFT+FORWARD
H
RIGHT+FORWARD
H
TURBO
H
TURBO+FORWARD
H
H
TURBO+LEFT+FORWARD
H
H
H
TURBO+RIGHT+FORWARD
H
H
H
BACKWARD
Z
BACKWARD+RIGHT
Z
H
BACKWARD+LEFT
Z
H
TURBO+BACKWARD
H
H
TURBO+BACKWARD+RIGHT
H
H
H
TURBO+BACKWARD+LEFT
H
H
H
LEFT
H
RIGHT
H
FUNCTION1
H
FORWARD+FUNCTION1
Z
H
FORWARD+TURBO+FUNCTION1
H
H
H
TURBO+FUNCTION1
H
H
BACKWARD+FUNCTION1
Z
H
BACKWARD+TURBO+FUNCTION1
H
H
H
LEFT+FORWARD+FUNCTION1
Z
H
H
RIGHT+FORWARD+FUNCTION1
Z
H
H
LEFT+BACKWARD+FUNCTION1
Z
H
H
RIGHT+BACKWARD+FUNCTION1
Z
H
H
LEFT+FUNCTION1
H
H
RIGHT+FUNCTION1
H
H
FUNCTION2
H
FORWARD+FUNCTION2
Z
H
FORWARD+TURBO+FUNCTION2
H
H
H
TURBO+FUNCTION2
H
H
BACKWARD+FUNCTION2
Z
H
BACKWARD+TURBO+FUNCTION2
H
H
H
LEFT+FORWARD+FUNCTION2
Z
H
H
RIGHT+FORWARD+ FUNCTION2
Z
H
H
LEFT+BACKWARD+FUNCTION
Z
H
H
RIGHT+BACKWARD+FUNCTION2
Z
H
H
LEFT+FUNCTION
H
H
RIGHT+FUNCTION2
H
H
H = high level, Z = 60Hz flash
Thus, from the table, we can see that there are more than 50 states of function combinations from 7 control keys.
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RCT6
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CMOS IC
TYPICAL APPLICATION CIRCUIT (FOR REFERENCE ONLY)
Transmitter (UTC RCT6 Fosc ≌ 128KHz)
-
9V
+
AMP
R
B
T
1
16
2
15
3
14
13
4
5
6
7
8
UTC
RCT6-A
F
L
R1
330Ω
R7
50K
SF1
150K
R2
120K
crystal
L1
C4
47P
L2
C8
47P
L3
27.145MHz
12
C5
47P
Q1
Q2
11
10
9
C3
0.02μP
ZD1 C1
0.02μP
R3
100Ω
C2
33μP
R5
33K
C6
47P
R6
100Ω C7
0.02μP
C9
100P
C10
10P
R4
6.8K
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RCT6

CMOS IC
TEST CIRCUIT
Fosc for UTC RCT6 ≌ 128KHz
UTC RCT6 output pin (SO) has an inverted phase with UTC RCR6C input (SI). If UTC RCT6 is connected without
using a RF module, an inverter has to be inserted between this 2 pins.
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
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