SC5260 [SILAN]
REMOTE CONTROL ENCODER; 遥控器编码器
| 型号： | SC5260 |
| 厂家： | 
SILAN MICROELECTRONICS JOINT-STOCK |
| 描述： | REMOTE CONTROL ENCODER |
| 文件： | 总8页 (文件大小：137K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Silan
Semiconductorsꢀ
SC5260
ꢀ
REMOTE CONTROL ENCODER
DESCRIPTION
The SC5260 is a remote control encoder paired with either
SC5260 or SC5272 utilizing COMS Technology. It encodes data and
SOP-16
address pins into
a serial coded waveform suitable for RF
modulation. SC5260 has a maximum of 10 bits tri-state address
pins providing up to 59,049 (or 310) address codes; thereby,
drastically reducing any code collision and unauthorized code
scanning possibilities.
SC5260 is one of the first generation of Encoder/
Decoder ICs. When paired with SC5270, this encoder/decoder
(SC5260/SC5270) pair can operate at very wide temperature range
(see Features). Thus, this very important feature enables your
Encoder/Decoder to operate under the worst environmental
condition.
DIP-16
ꢀ
ꢀ
ꢀ
ꢀ
APPLICATIONS
* Home/Car Security System
* Garage Door Controller
* Remote Fan Controller
* Remote Control Toys
FEATURES
* High Performance Technology
* Low Power Consumption
* Very High Noise Immunity
* Wide Operating Temperature Range: -30°C ~ 70°C
* 8 or 10 Tri-State Code Address Pins
* Single Resistor Oscillator
* Least External Components
ODERING INFORMATION
SC5260-R4 (S)
SC5260-R2 (S)
16 Pins, DIP (SO)
16 Pins, DIP (SO)
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
ꢀ
Rev: 1.0
2000.12.31ꢀ
1
Silan
Semiconductorsꢀ
SC5260
ꢀ
BLOCK DIAGRAM
A0
A1
SYSTEM
TIMING
OSC
OSC
A2
A3
A4
A5
ADDRESS
/DATA
CONTROL
LOGIC
A6
A7
A8/D3
A9/D2
D1
CODE
GENERATION
DOUT
D0
PIN CONFIGURATION
A0
A1
A2
A3
A4
A5
A6
A7
1
2
3
4
5
6
7
8
16
V
CC
A0
A1
A2
A3
A4
A5
A6
A7
1
2
3
4
5
6
7
8
16 VCC
15 DOUT
14 OSC
13 D0
15 DOUT
14 OSC
13 D0
12 D1
12 D1
11 D2
11 A9
10 D3
10 A8
9
VSS
9
VSS
ABSOLUTE MAXIMUM RATINGS
Characteristic
Symbol
VCC
Value
-0.3 ~ +6.0
Unit
V
Supply Voltage
Input/Output Voltage
VIN,VOUT
Pa
-0.3V ~ VCC+0.3V
500
V
Maximum Power Dissipation
Operating Temperature
Storage Temperature
mW
°C
Topr
-30 ~ +70
-40 ~+125
Tstg
°C
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
ꢀ
Rev: 1.0
2000.12.31ꢀ
2
Silan
Semiconductorsꢀ
SC5260
ꢀ
ELECTRICAL CHARACTERISTICS
Parameter
Supply Voltage
Symbol
Test conditions
Min
Typ
Max
Unit
VCC
1.8
6.0
V
VCC=3V OSC stops
Stand-by Current
Isb
IOH
IOL
Iop
0.2
0.5
0.8
µA
mA
mA
mA
All input pins open
VCC=3V, VOH=1.5V
VCC=6.0V, VOH=3.0V
VCC=3V, VOH=1.5V
VCC=6.0V, VOH=3.0V
VCC=1.8V
2.5
10
DOUT Output Driving Current
DOUT Output Sinking Current
Operation Current
4.6
12
0.01
0.50
VCC=6.0V
PIN DESCRIPTION
Pin No.
Symbol
A0~A7
I/O
Description
1~8
I
Code Address Pin Nos.0~7
These eight tri-state pins ate detected by SC5260 to determine the
encoded waveform bit0~bit7. Each bit can be set to “0”, “1”, or
“f”(floating).
10~11
A8/D3~A9/D2
I/PL*
Code Address pin Nos.8~9/Data Pin Nos.3~2.
These two tri-state pins are detected by SC5260 to determine the
encoded waveform bit8~bit9. When these pins ate used as address
pins (as in SC5260-R2), they can be set to “0”, “1”, or “f” (floating).
When these pins are used as data pins (as in SC5260-R4), they can
only be set to “0” or “1”.
12~13
14
D1, D0
OSC
I/PL
I
Data Pin Nos. 1~0. These pins can only be set to “0” or “1”.
Oscillator Pin A resistor connected between the OSC Pin and the VCC
determines the fundamental frequency of the SC5260.
Data Output Pin. The encoded waveform is serially outputted to this
pin. When SC5260 is not transmitting, DOUT outputs low (VSS)
voltage.
15
DOUT
O
16
9
VCC
VSS
Positive Power Supply
Negative Power Supply
Note: PL -- Pull-low Resistor is connected internally
PL* -- If those two pins are used as Data Pins (SC5260-R2), pull-low resistor is connected internally;
otherwise, no pull-low resistor is connected.
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
ꢀ
Rev: 1.0
2000.12.31ꢀ
3
Silan
Semiconductorsꢀ
SC5260
ꢀ
FUNCTIONAL DESCRIPTION
SC5260 encodes the code address and data set at A0~A7, A8/D3, A9/D2, D1 and D0 into a special waveform
and outputs it to the DOUT when any of the data pins is tied to high. This waveform is fed to the RF Modulator for
transmission. The transmitted radio frequency is received by the RF demodulator and reshaped into the special
waveform. SC5270 (or SC5272) is then used to decode the waveform and set the corresponding output pin(s).
Thus completing a remote control encoding and decoding function.
1. RF Operation
1) Code Bits
A Code Bits is the basic component of the encoded waveform, and can be classified as either an AD
(Address/Data) Bit or a SYNC (Synchronous) Bit.
•Address/Data (AD) Bit Waveform
An AD Bit can be designated as Bit “0”, “1”, or “f” if it is in low, high or floating state respectively. One bit
waveform consists of 2 pulse cycles. Each pulse cycle has 512 oscillating clock periods. For further details, please
refer to the diagram below:
¢
Osc
1 bit = 1024
¢
Bit "0"
Bit "1"
128
¢
384
¢
128
¢
Bit "f"
Floating
Where: α = Oscillating Clock Period
•Synchronous (SYNC.) Bit Waveform
The Synchronous Bit Waveform is 4 bits long with 1/8 bit width pulse. Please refer to the diagram below:
1/8 bit width = 128
¢
4 bit width = 4096
¢
Note: 1 bit = 1024
¢
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
ꢀ
Rev: 1.0
2000.12.31ꢀ
4
Silan
Semiconductorsꢀ
SC5260
ꢀ
2) Code Word
A group of Code Bits is called a Code Word. A Code Word consists of 12 AD bits followed by one Sync Bit. The
12 AD bits are determined by the corresponding states of A0~A7, A8/D3, A9/D2, D1 and D0 pins at the time of
transmission. When the Data Type of SC5260 is used, the address bits will decrease accordingly.
For example: In the 4-Data Type where the address has eight (8) bits, the transmitting format is:
8 Address Bits
4 Data Bits
Sync. Bit
SC5260 has a maximum of ten (10) Address Bits. The following diagram shows the code bits with their
corresponding pins.
First Bit Transmitted
A8/ A9/
D3 D2
A0 A1 A2 A3 A4 A5 A6 A7
D1 D0
SYNC BIT
One Complete Code Word
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2 Data:
4 Data:
A0
A0
A1
A1
A2
A2
A3
A3
A4
A4
A5
A5
A6
A6
A7
A7
A8
D3
A9
D2
D1
D1
D0
D0
Sync Bit
Sync Bit
The Code Bits A0~A7, A8/D3, A9/D2, D1 and D0 are determined by the states set at these pins. For example,
when the A0 (Pin No.1) is set to “1” (VCC), the Code Bit A0 is synthesized as “1” bit. In the same manner, when it
(A0 Pin) is set to “0” (VSS) or left floating, the Code Bit A0 is synthesized as a “0” or “f” bit respectively.
When SC5260 detects “1” on any of the Data Pins, it outputs a Code Word at DOUT. If the Data Pin is still in
high state (“1”) the time the Code Word transmission ends, SC5260 outputs the same Code Word. Please refer
to the diagram below:
DATA PIN
1 Code Word
1 Code Word 1 Code Word 1 Code Word
DOUT
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
ꢀ
Rev: 1.0
2000.12.31ꢀ
5
Silan
Semiconductorsꢀ
SC5260
ꢀ
3) Single Resistor Oscillator
The built-in oscillator circuitry of SC5260 allows a precision oscillator to be constructed by connecting an external
resistor between OSC and VCC pins. For SC5270 (or SC5272) to decode correctly the received waveform, the
oscillator frequency of SC5270 (or SC5272) must be 1/16~4 (or 1/16~1/4) times that of the transmitting SC5260.
The typical oscillator frequency of SC5270, and SC5272 are shown below:
Encoder (SC5260) OSC Frequency
Decoder (SC5270) OSC Frequency
500
180
160
140
400
OSC Resistor = 510K Ohms
120
100
80
OSC Resistor = 1.0M Ohms
OSC Resistor = 1.2M Ohms
OSC Resistor = 2.2M Ohms
300
250
200
R=820K
R=1M
60
40
20
R=2M
100
0
0
2
4
6
8
10
12
1
2
3
4
5
6
7
8
9
10
Voltage (Vcc)
Voltage (Volts)
Decoder (SC5272) OSC Frequency
1000
R=100K
R=240K
100
10
R=510K
R=1M
R=2M
15
3
6
9
12
Voltage
Suggested oscillator resistor values are shown below.
SC5260 SC5270 SC5272
820k
â
510k
620k
1.2M
â
â
â
1M
â
1Mâ
1.2M
2.2M
â
â
2Mâ
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
ꢀ
Rev: 1.0
2000.12.31ꢀ
6
Silan
Semiconductorsꢀ
SC5260
ꢀ
OPERATION FLOWCHART
Power ON
Stand-by Mode
NO
Data Pin(s)
in HIGH State
YES
1 Word of Address
/Data Transmitted
NO
Data Pin(s) still
in HIGH State
YES
APPLICATION CIRCUIT
Vcc
10
H
5p
5p
820K
47K
9
16 15 14 13 12 11 10
SC5260-R4
1
2
3
4
5
6
7
8
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
ꢀ
Rev: 1.0
2000.12.31ꢀ
7
Silan
Semiconductorsꢀ
SC5260
ꢀ
PACKAGE OUTLINE
DIP-16-300-2.54
UNIT: mm
2.54
1.50
15 degree
19.4
0.46
SOP-16-225-1.27
UNIT: mm
0.41
1.27
10.20
9.80
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
ꢀ
Rev: 1.0
2000.12.31ꢀ
8
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