UTC-IC UTCRCT02

UTC RCT02
CMOS IC
Encoder For Remote Controller
With Five Functions
DESCRIPTION
The chip can be used with the decoder RCR02 to provide a
complete control functions to the remote-controlled toy. The
RCT02 has five input pins corresponding with the five
function buttons i.e, forward, backward, rightward, leftward
and turbo. The encoding circuit in the RCT02 sends digital
codes to the two output pins SO and SC. The digital codes
correspond to the definite function buttons or their
combinations. The SO and SC outputs are used in wireless
and infra-red applications respectively.
There is an internal oscillator in the RCT02. By adding an
external resistor conveniently, the oscillator will be
constructed. The oscillator frequency can be adjusted by the
external resistor. The relative error between the frequencies
of the two on chip oscillators in the RCT02 and RCR02 must
be less than ±25%.
SOP-14
DIP-14
The auto-power-off function is achieved by an internal
counter. When the RCT02 is powered on, the counter is reset
and begin to count. Any action of push down or release the
function button also reset the counter. The PC pin will keep
on a high level until the counter counts up to about 4 minutes.
The PC output is used to control on/off state of the external
power supply. Pressing OFF button can also shut down the
power supply. Press on any function button will wake up the
chip promptly.
FEATURES
*Five input pins used for five control buttons
*Operating power-supply voltage range: 2.5 to 5.0V
*Auto-power-off if no press on any button in 4 minutes or
continuously press on any button over 4 minues
*Manual-power-on/off with ON/OFF button
*One output pin used for external power control
*Press on any button as wake up
*On-chip oscillator with an external resistor
*Low operating current
*Few external components needed
UTC
UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R502-002,C
UTC RCT02
CMOS IC
Logic Block Diagram
OFF
OSCI
Oscillator
Timing
Generator
4 Minutes
Counter
Input
Circuit
Encoding
Circuit
Output
Circuit
OSCO
PC
RIGHTB
LEFTB
TURBOB
SO
FORWARDB
BACKWARDB
SC
Product Pin Configuration and Pin Description
Pin No.
Pin Name
1
2
3
4
5
6
7
8
9
10
11
12
13
14
RIGHTB
TESTB
GND
BACKWARDB
FORWARDB
TURBOB
SC
SO
VDD
PC
OSCO
OSCI
OFF
LEFTB
UTC
RIGHTB
1
14
LEFTB
TESTB
2
13
OFF
GND
3
12
OSCI
BACKWARDB
4
11
OSCO
FORWARDB
5
10
PC
TURBOB
6
9
VDD
SC
7
8
SO
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
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 to shut down the external power supply
The leftward function will be selected, if this pin is connected to GND
UNISONIC TECHNOLOGIES CO., LTD.
2
QW-R502-002,C
UTC RCT02
CMOS IC
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
VALUE
DC Input Voltage
Supply Voltage to Ground Potential(Inputs &VDD Only)
Supply Voltage to Ground Potential(Outputs &D/O Only)
DC Output Current
Power Dissipation
Ambient Temperature With Power Applied
Storage Temperature
VIN
-0.5 ~ +5.5
-0.5 ~ +5.5
-0.5 ~ +5.5
20
500
-10 to +40
-25 to +85
Io
PD
TA
TSTG
UNIT
V
V
V
mA
mW
°C
°C
DC ELECTRICAL CHARACTERISTICS (Over the operating rating, TA= -10°C~ +40°C,VDD=4.0V±10%)
PARAMETER
Operating Voltage
Supply Current
Standby Current
Input Current
Input Low Voltage
Output High Voltage
Output High Current
Output Low Voltage
Output Low Current
SYMBOL
VDD
IDD
ISTB
IIN
VIL
VOH
IOH
VOL
IOL
TEST CONDITIONS
Output unloaded
OFF state
Pin 1,4,5,6,14
Guaranteed Logic Low Level
IOUT=1.0mA
VOUT=1.4V
IOUT=150µA
VOUT=0.5V
MIN
TYP
MAX
UNITS
2.5
4.0
5.0
300
10
60
0.5
V
µA
µA
µA
V
V
mA
V
µA
3.5
-4.0
0.5
150
AC ELECTRICAL CHARACTERISTICS (Over the operating rating, TA= -10°C to +40°C,VDD=4.0V±10%)
PARAMETER
MIN
TYP
MAX
UNITS
Fosc
TA=25°C,R=200KΩ
102
128
154
KHz
Cycle Time of Function Code
TFUN
FOSC=102~ 154KHz
0.8
1
1.2
ms
Cycle Time of Start Code
TSTA
FOSC=102~ 154KHz
1.6
21
2.4
ms
Carrier Frequency of SC Pin
FCSC
FOSC=102~ 154KHz
51
64
77
KHz
TOFF*
FOSC=102~ 154KHz
3.2
4
4.8
min.
Oscillator Frequency
(Note 1)
Time of Auto-Power-Off
(Note 2)
SYMBOL
TEST CONDITIONS
Note 1: The relative error between the frequencies of the two on-chip oscillators in the RCT02 and RCR02 must be
less than±25%.
Note 2: When adjust the external oscillator resistor, the auto-power-off time will vary relevantly.
UTC
UNISONIC TECHNOLOGIES CO., LTD.
3
QW-R502-002,C
UTC RCT02
CMOS IC
CODE FORMAT (W1 is used for function codes, W2 for start codes)
W1
W1:1KHz 50% Duty Cycle Typical
W2
W2: 500Hz 75% Duty Cycle Typical
WORD FORMAT
Start Code: 4W2
Function Code: n' W1
1 Word
ENCODING TIMING
W2 W2 W2 W2 (n)’ W1 W2 W2 W2 W2 (n)’ W1 W2 W2 W2 W2 (n)’ W1 W2 W2 W2 W2 (n)’W1- - - - - - - -
Press any buttons
Encoding output
1
1st word 2nd word
Function Codes
UTC
2
3
14
15
last word
End Codes
UNISONIC TECHNOLOGIES CO., LTD.
4
QW-R502-002,C
UTC RCT02
CMOS IC
Number of Function Codes (n) W1
Function Buttons
4
(End Code)
10
Forward
16
Forward & Turbo
22
Turbo
28
(Turbo/Forward) & Left
34
(Turbo/Forward) & Right
40
Backward
46
Backward & Right
52
Backward & Left
58
Left
64
Right
PC Output Timing
VDD
VDD
OFF
OFF
PC
PC
4 Minutes
4 Minutes
Note: There is no press on any function button.
VDD
Press Function
buttons
PC
4 Minutes
UTC
4 Minutes
4 Minutes
UNISONIC TECHNOLOGIES CO., LTD.
5
QW-R502-002,C
UTC RCT02
CMOS IC
BLOCK DIAGRAM OF APPLICATION CIRCUIT (1)
5~12V
1
2
RIGHTB
5
6
7
OFF
TESTB
3
4
LEFTB
GND
OSCI
BACK
OSCO
FOR
TURBOB
SC
PC
VDD
SO
14
13
POW ER
OFF
12
11
10
9
8
+
RCT02
RF
TRANSMITTER
Note: 1.The power supply for above circuit should be 5.0V to 12V.
2.This circuit is for wireless application.
UTC
UNISONIC TECHNOLOGIES CO., LTD.
6
QW-R502-002,C
UTC RCT02
CMOS IC
BLOCK DIAGRAM OF APPLICATION CIRCUIT (2)
2.5~5.0V
1
2
3
4
5
6
7
RIGHTB
TESTB
LEFTB
OFF
OSCI
GND
BACK
OSCO
PC
FOR
TURBOB
VDD
SC
SO
14
13
POW ER
OFF
12
11
10
9
8
﹢
RCT02
RF
TRANSMITTER
Note: 1.The power supply for above circuit should be 2.5V to 5.0V.
2. This circuit is for wireless application.
UTC
UNISONIC TECHNOLOGIES CO., LTD.
7
QW-R502-002,C
UTC RCT02
CMOS IC
BLOCK DIAGRAM OF APPLICATION CIRCUIT (3)
5~12V
RCT02
1
2
3
4
5
6
7
RIGHTB
TESTB
GND
BACK
FOR
TURBOB
SC
LEFTB
OFF
OSCI
OSCO
PC
VDD
SO
14
13
POW ER
OFF
12
11
10
9
8
INFRA-RED
DIODES
+
+
Note: 1.The power supply for above circuit should be 5.0V to 12V.
2.This circuit is for infra-red application.
UTC
UNISONIC TECHNOLOGIES CO., LTD.
8
QW-R502-002,C
UTC RCT02
CMOS IC
BLOCK DIAGRAM OF APPLICATION CIRCUIT (4)
2.5~5.0V
1
2
3
4
5
6
7
RIGHTB
LEFTB
OFF
TESTB
GND
OSCI
BACK
OSCO
FOR
TURBOB
PC
VDD
SO
SC
14
13
POW ER
OFF
12
11
10
9
8
+
RCT02
INFRA - RED
DIODES
+
Note: 1.The power supply for above circuit should be 2.5V to 5.0V.
2.This circuit is for infra-red application.
UTC
UNISONIC TECHNOLOGIES CO., LTD.
9
QW-R502-002,C
UTC RCT02
CMOS IC
TYPICAL APPLICATION FOR TRANSIMIT CIRCUIT WITH 9V BATTERY
R11
10M
C12
0.01u
S6
R9
330
V5
8550
+
POW ER
OFF
C11 V7
4.7u 4148
R7200K
V4
4.7V
R12
10M
S5
R2
4.7K
SO
VDD
PC
L1
2.2u
R3
220K
7
SC
TURBOB
6
FOR
5
BACK
4
GND
3
TESTB
2
1
RIGHTB
RCT02
CR1
27.145
V2
9014
S1
UTC
S2
S3
S4
V3
LED
R4
6.8K
8
9
10
11
OSCO
12
OSCI
13
OFF
LEFTB
14
R10
1K
C7
68
C8
0.02u
V1
9014
C3
47
C9
68
R5
3.3K
V6
9013
R8
3.9K
A1
ANTENNA
L2
2.2u
C4
150
L3
C2
150
R1
100
B1
9V
L4
6.8u
C1
100
C6
0.2 u
R6
100
UNISONIC TECHNOLOGIES CO., LTD.
10
QW-R502-002,C
UTC RCT02
CMOS IC
C6
0.2u
C1
100
R6
100
R4
6.8K
V2
9014
R3
CR1
220K
27.145
V4
4.2V
8
SO
RCT02
TURBOB
SC
7
9
10
PC
FOR
VDD
6
5
11
OSCO
BACK
4
12
OSCI
GND
3
TESTB
OFF
13
2
1
RIGHTB
LEFTB
14
R7
200K
B1
9V
C12 C11
01U 3.3U
R9
330
L1
2.2u
C7
68
C3
47
C8
02u
c9
68
V1
9014
R5
33K
R1
100
C4
L3
150
L2
2.2u
L4
6.8u
A1
ANITENNA
TYPICAL APPLICATION FOR TRANSIMIT CIRCUIT WITH 9V BATTERY
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.
UTC
UNISONIC TECHNOLOGIES CO., LTD.
11
QW-R502-002,C