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Silan Semiconductors
INFRARED REMOTE CONTROL TRANSMITTER
DESCRIPTION
The SC50560 is a remote control transmitter utilizing CMOS
SC50560
SOP-20
technology housed in a 20-pin DIP or SO package. A 4x8 key matrix and extension bit inputs allow the transmission of up to 256 instructions. The transmission code consists of 16 bits code (8 bits custom code and 8 bits data code) and a leader code. Pin assignments and application circuit of SC50560 are optimized for easy PCB layout and cost saving advantage for remote control applications.
DIP-20
FEATURES
* CMOS technology * Low power consumption * Least external components * LED power dissipation is less during the transmission of instructions
ORDERING INFORMATION
SC50560 SC50560S DIP-20 Package SOP-20 Package
APPLICATIONS
* Audio Equipment * Television * Video Cassette Recorder * Air Condition
PIN CONFIGURATION
Vss TEST SEL OSCI OSCO CS KIO0 KIO1 KIO2 1 2 3 4 5 6 7 8 9 SC50560 20 VDD 19 DOUT 18 KO0 17 KO1 16 KO2 15 KO3 14 KO4 13 KO5 12 KO6 11 KO7
KIO3 10
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.3 2002-03-21
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BLOCK DIAGRAM
KIO0 KIO1 KIO2 KIO3 CS
7 8 9 10
SC50560
VDD
20
VSS
1
OSCI
4
OSCO
5
Scan Key Input
Oscillation Circuit Timing Generator Test Circuit
2 TEST 19 DOUT
Data Encoder
6
Code Transfer
Output Controller
3
SEL
Scan Signal Generating Circuit
18
17
16
15
14
13
12
11
S1 S2 S3 S4 S5 S6 S7 S8
ABSOLUTE MAXIMUM RATINGS (Tamb=25C)
Characteristic
Supply Voltage Input Voltage Output Voltage Operating Temperature Storage Temperature
Symbol
VCC VIN VOUT Topr Tstg
Value
-0.3 ~ 5.5 Vss-0.3V ~ VDD+0.3V Vss Vo VDD -20 ~ 70 -40 ~ +125
Unit
V V V C C
ELECTRICAL CHARACTERISTICS (Tamb=25C,
Parameter
Supply Voltage Operating Current Stand-by Current High level Output Current (Dout) Low Level Output Current (Dout, KO0~KO7) High Level Input Voltage (CS) (KIO0~KIO3) Low Level Input Voltage (CS) (KIO0~KIO3) Input Pull-High Resistance (KIO0~KIO3)
VDD =3.0V,Vss=0,Unless otherwise specified)
Symbol
VDD IOP ISB IOH IOL I KO0~KO7 VIH
Test Conditions
Fosc =455KHz Fosc =455KHz OSCO =VDD KIO0~KIO3= VDD TEST = Vss SEL = Vss VOH=2V VOL=0.9V
Min
2.0
Typ
3.0 0.12 0.1
Max
4.0 0.3 1
Unit
V mA A mA mA
-1.0 0.5 4.5
-13 1.2 5.3 VDD
VDD=3.0V
0.7 VDD
V
VIL
VDD=3.0V
0
0.3VDD
V
RIN
VDD=3.0V
55
70
85
k
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.3 2002-03-21
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PIN DESCRIPTION
Pin No.
1 2 3 4 5 6 7~10 18~11 19 20
SC50560
Description
Negative Power Supply Test Pin. This pin is normally connected to VSS. Select Pin for SC50560-001/003. Oscillation Input Pin Oscillation Output Pin Code Select Pin Input/Output Pins Scan Output Pins Output Pin Positive Power Supply
Pin Name
VSS TEST SEL OSCI OSCO CS KIO0~KIO3 KO0~KO7 Dout VDD
Input/output
-I I I O I I/O O O --
FUNCTIONAL DESCRIPTION
SC50560 is capable of transmitting up to 256 different instructions and 8 bits custom codes using a 16-bit PCM Code with a leader code. Furthermore, oscillation is normally stopped when there is no operating, thereby, lower power dissipation.
1. TRANSMISSION CODE
SC50560 transmission code consists of a leader code, 8 bits custom code (C0 to C7) followed by a sync. bit and 8 bits data code (D0 to D7) followed another sync. bit. The custom and the data codes are separated by a separator. Please refer to the diagram below:
C1 C2 C3 C4 C5 C6 C7 SYNC Leader Pulse 8 Bits Custom Code Sync. Bit Seperator D0 D1 D2 D3 D4 D5 D6 D7 SYNC 8 Bits Data Code Sync. Bit
Figure 1. SC50560 Transmission Code Format
One transmission Code Word consists of a 19-bit pulse (that is the leader pulse plus the 16 bits code) and the separator. It is transferred in a 63.4ms for as long as the key is depressed. Please refer to the diagram below:
8BITS CUSTOM CODE LEADER CODE C0 C1 C2 C3 C4 C5 C6 C7 SEPARATOR SYNC D0 D1 8BITS DATA CODE D2 D3 D4 D5 D6 D7 SYNC
8.4ms
4.2ms ONE CODE WORD 63.4ms
4.2ms
Figure 2. SC50560 Detailed Code Word Format
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.3 2002-03-21
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LEADER CODE
SC50560
The leader code is located at the beginning of the transmission code and is made up of 8.4ms HIGH & 4.2ms LOW pulse and is modulated in 38KHz providing easy identification of the reception code head bit at the receiver.
CUSTOM CODE Custom Code may be selected by connection CS Input with Scan Output (KO0 to KO4). An example of a custom code selection is shown in the diagram below.
CS
KO0
KO1
KO2
KO3
KO4
6
18
17
16
15
14
Custom Code
C0 1
C1 0
C2 1
C3 0
C4 1
C5 0
C6 0
C7 0
Figure 3. custom Code Selection Example
DATA CODE D0 to D7 of the transmission code are the data code bits. When CS Input and the Scan Output (KO5 to KO7) are connected, data bits--D5 to D7 becomes the system extended code bits. An example of the Extended code Bits Selection is given in the diagram below:
CS
KO5
KO6
KO7
6
18
17
16
Data Code
SW = OFF SW = ON
D5
1 1
D6
0 0
D7
0 1
Figure 4. Extended Code Selection
2. SEPARATOR
The separator demarcates the custom code and the data code. It consists of a 4.2ms LOW pulse interval and can be determined at the receiver so theat any interference with other remote control system may be avoided. Please refer to Figure 2.
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.3 2002-03-21
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3. CARRIER
SC50560
The carrier of the transmission signal is 38KHz and one pulse width is 0.52ms. Therefor, with the exception of the leader code, there are twenty 38KHz clock in one pulse width. Please refer to the diagram below.
0.52ms
8.7s 26.3s
Figure 5. Transmission Signal Carrier Diagram
4. KEY INPUT
By connecting the input pins - KI0 to KI3 and scan output pins -KO0 to KO7 (also known as the Standard Keys), a 4x8 key matrix may be formed. Likewise, a maximum of 256 instructions may be provided by connecting the input CS with the scan output -KO0 to KO7 (also known as the Extended Keys). When two or more standard keys are pressed, the transmission output Dout is kept at LOW and no transmission code is outputted. Please refer to the tables below.
Data Key Input
KI0 KI1 KI2 KI3
D0
0 1 0 1
D1
0 0 1 1
Data Scan Output
KO0 KO1 KO2 KO3 KO4 KO5 KO6 KO7
D2
0 1 0 1 0 1 0 1
D3
0 0 1 1 0 0 1 1
D4
0 0 0 0 1 1 1 1
Data CS Input
KO5 KO6 KO7
D5
1 ---
D6
-1 --
D7
--1
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.3 2002-03-21
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5. Oscillation Circuit
The oscillation circuit may be constructed by connected a ceramic resonator between the OSCI and OSCO. Please refer to the diagram right. When the references signal is set to 455KHz the carrier can be set at 38KHz. When no key input is pressed, the oscillation circuit is normally stopped, thereby, lower power dissipation.
SC50560
SC50560
OSCI OSCO
4
5
Figure 6. Oscillation Circuit
6. CODE FORMAT MODES
SC50560 code format comes in three modes: 001, 002 and 003. Please refer to the diagram below:
SC50560 Version
Description
Mode A Code Format:
Minimum Number of Words Transmitted
1 word
SC50560-001
Custom Code Bit 5--C5=0, SEL is connected to VDD
SC50560-002
Mode A & B Code Formats Mode A Code Format:
3 words -----
SC50560-003
Custom Code Bit 5--C5=1, When SEL is connected to Vss
Both SC50560-001 and SC50560-002 make use of the same operation when the input from terminal CS and the scan output (KO0 to KO4) are connected to make the custom code selection with the exception of the number of word transmitted. Please refer to the table above:
MODE A The diagram below gives us the transmission code format for Mode A. One Code Word consists of the Leader Code, 8 bits Custom Code followed by a sync. bit, Separator and 8 bits Data Code followed by another sync. bit. Please refer to the diagram below.
C0 C1 C2 C3 C4 C5 C6 C7 SYNC Leader Pulse 8 Bits Custom Code Sync. Bit Seperator D0 D1 D2 D3 D4 D5 D6 D7 SYNC 8 Bits Data Code Sync. Bit
Figure 7. Mode A Code Format
Each Code Bit may either be "0" or "1". Please refer to the diagram below.
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.3 2002-03-21
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Silan Semiconductors
0.52ms
SC50560
Bit "0" 1.05ms
Bit "1" 2.1ms
Figure 8.
Mode A Bit "0" & "1" Waveform
MODE B The diagram below gives us the transmission code format for Mode B. Under this mode, the custom codes are not selected, therefore the transmission code only consists of the 6 bits data code followed by a sync. bit. Please refer to the diagram below:
D0 D1 D2 D3 D4 D5 SYNC Data Code
Figure 9. Mode B Code Format
A transmission Code Bit may either be "0" or "1". Please refer to the diagram below:
0.52ms
Bit "0" 2.1ms
Bit "1" 4.2ms
Figure 10. Mode B Bit "0" & "1" Waveform Diagram
Under Mode B, a maximum of 32 different instructions may be provided simply by connecting the inputs KI0 to KI3 with the Scan Outputs KO0 to KO7, thereby constructing a 4x8 key matrix. When two or more keys are pressed at the same time, the transmission output Dout is set to and the no transmission occurs. Please refer to the table below.
KO0 KI0 KI1 KI2 KI3
00 01 02 03
KO1
04 05 06 07
KO2
08 09* 0A* 0B*
KO3
0C 0D* 0E* 0F*
KO4
10* 11* 12* 13*
KO5
14* 15* 16* 17*
KO6
18* 19* 1A* 1B*
KO7
1C* 1D* 1E* 1F*
NOTE: * = Output of a five-word transmission code.
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.3 2002-03-21
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APPLICATION CIRCUIT
1. For 01 and 03 Versions
SC50560
Custom Code Setting
Settings for Data Bits--D5, D6, D7
IR LED 270
1 VDD 47F 3V
20
VDD
19
Dout
18
17
16
15
14
13
KO5
12
KO6
11
KO7
KO0 KO1 KO2
KO3 KO4
SC50560-001
Vss TEST SEL OSCI OSCO CS KI0 KI1 KI2 KI3
1
2
3
VSS
4
5
455 KHz 100pF 100pF
6
7
8
9
10
VDD
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.3 2002-03-21
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2. Extended Codes
Custom Code Setting Extended Keys
SC50560
Standard Keys IR LED 270
1 VDD 47F 3V
20
VDD
19
Dout
18
17
16
15
KO3
14
KO4
13
KO5
12
KO6
11
KO7
KO0 KO1 KO2
SC50560-001
Vss TEST SEL OSCI OSCO CS KI0 KI1 KI2 KI3
1
2
3
VSS
4
5
455 KHz 100pF 100pF
6
7
8
9
10
VDD
Standard Code
KI0 KO0 KO1 KO2 KO3 KO4 KO5 KO6 KO7 00 04 08 0C 10 14 18 1C KI1 01 05 09 0D 11 15 19 1D KI2 02 06 0A 0E 12 16 1A 1E KI3 03 07 0F 0B 13 17 1B 1F 34 58 9C KI0
Extended Code
KI1 KI2 KI3
Not Used
35 60 8D
36 5A 9E
37 5B 9F
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.3 2002-03-21
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3. Double Key Operation
Custom Code Setting Double Key
SC50560
IR LED 270
1 VDD 47F 3V
20
VDD
19
Dout
18
17
16
15
KO3
14
KO4
13
KO5
12
KO6
11
KO7
KO0 KO1 KO2
SC50560-001
Vss TEST SEL OSCI OSCO CS KI0 KI1 KI2 KI3
1
2
3
VSS
4
5
455 KHz 100pF 100pF
6
7
8
9
10
VDD
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.3 2002-03-21
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Silan Semiconductors
4. No Leader Code and Custom Code
SC50560
D2 Setting
IR LED 270
1 VDD 47F 3V
20
VDD
19
Dout
18
17
16
15
14
KO4
13
KO5
12
KO6
11
KO7
KO0 KO1 KO2 KO3
SC50560-002
Vss TEST SEL OSCI OSCO CS KI0 KI1 KI2 KI3
1
2
3
4
5
455 KHz 100pF 100pF
6
7
8
9
10
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.3 2002-03-21
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Silan Semiconductors
CHIP TOPOGRAPHY
SC50560
17 16 15 14 13 12 11 10 9 8 5 6 7
18 19 20 1 2 3 4
Size: 1.40 x 1.21 mm2
PAD COORDINATES (Unit: m)
No. 1 2 3 4 5 6 7 8 9 Symbol P1 P2 P3 P4 P5 P6 P7 P8 P9 X -579.10 -579.10 -579.10 -579.10 -141.60 8.3 421.60 579.00 579.10 Y -35.50 -184.50 -333.50 -482.50 -482.50 -482.50 -482.50 -304.70 -155.70 No. 11 12 13 14 15 16 17 18 19 20 Symbol P11 P12 P13 P14 P15 P16 P17 P18 P19 P20 X 579.00 579.00 579.00 270.80 121.80 -27.20 -176.20 -579.10 -579.10 -579.10 Y 142.30 291.30 440.30 482.50 482.50 482.50 482.50 411.50 262.50 113.50
10 P10 579.10 -6.70 Note: The original point of the coordinate is the die center.
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.3 2002-03-21
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PCB WIRE LAYOUT SCHEMATIC:
SC50560
Transmitting tube output ground line
The transmitting tube ground line and IC ground line should layout separated or overstriking ground line.
The above IC only use to hint, not to specified.
Note: * In wire layout, the power filter capacitor should near to IC. * In wire layout, should avoid power line and ground line too long. * Recommended infrared transmit unit and IC ground line should layout separated, or overstriking lines. * The emitter of triode connect 1 resistor at least. * Recommended triode use 9014.
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.3 2002-03-21
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Silan Semiconductors
PACKAGE OUTLINE
SC50560
UNIT: mm
2.54 0.25B 0.05 15 degree 3.00MIN 4.36MAX 0.46B0.08 1.778MAX
DIP-20-300-2.54
6.60B 0.25
26.4B0.3
1.27
SOP-20-375-1.27
0.51MIN
7.62(300)
UNIT: mm
10.2B 0.4
1.27 12.7B0.25 0.4B0.1 3.1MAX
11.43
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.3 2002-03-21
14
0.25B 0.05
9.525(375)
7.6B
0.3
Silan Semiconductors
Attach Revision History
Data
2000.12.31 2002.01.04
SC50560
REV
2.0 2.1
Description
Change name of company in page footer Delete "or floating " in "6.code format modes" Modify the "Pin configuration "
Page
6 1 8-11 13 14 4
2002.02.28
2.2
Modify the "Application circuit" Add the "PCB wire layout schematic" Modify the "Package outline"
2002.03.21
2.3
Modify the "figure3" and "figure 4"
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.3 2002-03-21
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