Datasheet SC50560, SC50560S Datasheet (SILAN)

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INFRARED REMOTE CONTROL
TRANSMITTER

DESCRIPTION

The SC50560 is a remote control transmitter utilizing CMOS
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.

SC50560

SOP-20

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

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DIP-20 Package
SOP-20 Package

APPLICATIONS PIN CONFIGURATION

1
2
3
4
5
6
7
8
9

10

SC50560

20
19
18
17
16
15
14
13
12
11

* Audio Equipment

* Television

* Video Cassette Recorder

* Air Condition

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Vss

TEST

SEL

OSCI

OSCO

CS
KIO0
KIO1
KIO2
KIO3

V
D
KO0
KO1
KO2
KO3
KO4
KO5
KO6
KO7

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DD

OUT

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Rev: 2.3 2002-03-21

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BLOCK

DIAGRAM

7

KIO0
KIO1
KIO2
KIO3

CS

Scan

8

Key

9

Input

10

6

Transfer

Data Encoder

Code

Scan Signal GeneratingCircuit

S1 S2 S3 S4 S5 S6 S7 S8

VSSVDD

Timing

Generator

1618 17 15 14 13 12 11

Test Circuit

ABSOLUTE MAXIMUM RATINGS

Characteristic Symbol Value Unit

Supply Voltage V
Input Voltage V
Output Voltage V
Operating Temperature Topr -20 ~ 70
Storage Temperature Tstg -40 ~ +125

(Tamb=25°C)

CC

IN

OUT

-0.3 ~ 5.5 V

Vss-0.3V ~ VDD+0.3V V

Vss ≤ Vo ≤ V

ELECTRICAL CHARACTERISTICS

Parameter Symbol Test Conditions Min Typ Max Unit

Supply Voltage V
Operating Current I

Stand-by Current I

High level Output Current (Dout) I

(Dout, KO0~KO7)
High Level Input Voltage (CS)

(KIO0~KIO3)
Low Level Input Voltage (CS)
(KIO0~KIO3)
Input Pull-High Resistance
(KIO0~KIO3)

OP

OH

I

I

KO0~KO7

V

V

R

(Tamb=25°C,VDD=3.0V,Vss=0,Unless otherwise specified)

Fosc =455KHz 2.0 3.0 4.0 V

DD

Fosc =455KHz 0.12 0.3 mA
OSCO =VDDKIO0~KIO3= V

SB

TEST = Vss SEL = Vss

DD

VOH=2V -1.0 -13 mA

OL

VOL=0.9V

VDD=3.0V 0.7 V

IH

VDD=3.0V 0 0.3V

IL

VDD=3.0V 55 70 85

IN

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

2

SC50560

OSCOOSCI

54120

Oscillation

Circuit

2

Output

Controller

DD

0.5 1.2Low Level Output Current

4.5 5.3

DD

19

3

0.1 1

Rev: 2.3 2002-03-21

TEST

DOUT

SEL

V

°C
°C

V

DD

DD

µA

mA

V

V

kΩ

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PIN DESCRIPTION

Pin No. Pin Name Input/output Description

1VSS-- Negative Power Supply
2 TEST I Test Pin. This pin is normally connected to VSS.
3 SEL I Select Pin for SC50560-001/003.
4 OSCI I Oscillation Input Pin
5 OSCO O Oscillation Output Pin
6 CS I Code Select Pin

7~10 KIO0~KIO3 I/O Input/Output Pins

18~11 KO0~KO7 O Scan Output Pins

19 Dout O Output Pin
20 V

DD

-- Positive Power Supply

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:

SC50560

C1 C2 C3 C5C4 C6

Leader Pulse 8 Bits Custom Code

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

8.4ms 4.2ms

C0

C1 C2 C3 C4 C5 C6 C7 SYNC D0 D1 D2 D3 D4 D5 D6 D7 SYNC

ONE CODE WORD

Figure 2. SC50560 Detailed Code Word Format

63.4ms

C7 SYNCD0 D1 D2 D3 D4 D5 D6 D7SYNC

Sync. Bit

SEPARATOR

Seperator

4.2ms

8 Bits Data Code

8BITSDATACODE

Sync. Bit

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LEADER CODE

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 KO4KO3

6 18 17 16 15 14

SC50560

Custom Code

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:

CS18KO517KO6

6

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.

KO7

16

C01C10C21C30C41C50C60C7

Figure 3. custom Code Selection Example

Data Code D5 D6 D7

SW = OFF 1 0 0

SW = ON 1 0 1

0

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3. CARRIER

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

8.7µs

26.3µs

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.

SC50560

Data

Key Input

KI0 0 0
KI1 1 0
KI2 0 1
KI3 1 1

Data Data

Scan Output

KO0 0 0 0 KO5 1 -- -­KO1 1 0 0 KO6 -- 1 -­KO2 0 1 0 KO7 -- -- 1
KO3 110
KO4 001
KO5 101
KO6 011
KO7 111

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D0 D1

D2 D3 D4

CS Input

D5 D6 D7

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.

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:

SC50560-001

SC50560-002 Mode A&BCodeFormats 3words

SC50560-003

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:

Custom Code Bit 5--C5=0,
SEL is connected to V

Mode A Code Format:
Custom Code Bit 5--C5=1,
When SEL is connected to Vss

DD

Minimum Number of Words
Transmitted

SC50560

SC50560

OSCI OSCO

4 5

1word

-----

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.

C1 C2 C3 C5C4 C6

C0

Leader Pulse 8 Bits Custom Code

Figure 7. Mode A Code Format

Each Code Bit may either be “0” or “1”. Please refer to the diagram below.

C7 SYNCD0 D1 D2 D3 D4 D5 D6 D7SYNC

Sync. Bit

Seperator

8 Bits Data Code

Sync. Bit

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0.52ms

SC50560

Bit "0"

Bit "1"

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:

A transmission Code Bit may either be “0” or “1”. Please refer to the diagram below:

Bit "0"

Bit "1"

1.05ms

2.1ms

Figure 8. Mode A Bit “0” & “1” Waveform

SYNCD0 D1 D2 D3 D4 D5

Data Code

Figure 9. Mode B Code Format

0.52ms

2.1ms

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 KO1 KO2 KO3 KO4 KO5 KO6 KO7

KI0 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 0B* 0F* 13* 17* 1B* 1F*

NOTE: * = Output of a five-word transmission code.

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APPLICATION CIRCUIT

1. For 01 and 03 Versions

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SC50560

Custom Code Setting

IR
LED

270

¡

1

¡

V

DD

3V

47F

1516 14 1113

DD

Settings for Data
Bits--D5, D6, D7

121920 18 17

KO7KO6KO5KO4KO3KO2KO1KO0DoutV

SC50560-001

Vss TEST SEL OSCI OSCO CS KI0

KI1 KI2 KI3

21 3 54 6 7 8 9 10

100pF

455
KHz

100pF

V

SS

V

DD

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2. Extended Codes

V

DD

3V

IR
LED

47F

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Custom Code Setting

Extended Keys

Standard Keys

270

¡

1

¡

1516 14 1113

DD

121920 18 17

KO7KO6KO5KO4KO3KO2KO1KO0DoutV

SC50560

SC50560-001

Vss TEST SEL OSCI OSCO CS KI0

KI1 KI2 KI3

21 3 54 6 7 8 9 10

100pF

455
KHz

100pF

V

SS

V

DD

KI0 KI1 KI2 KI3 KI0 KI1 KI2 KI3
KO000010203
KO104050607
KO2 08 09 0A 0F
KO3 0C 0D 0E 0B
KO410111213
KO51415161734353637
KO618191A1B58605A5B
KO71C1D1E1F9C8D9E9F

Standard Code Extended Code

Not Used

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3. Double Key Operation

IR
LED

V

DD

3V

47F

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Custom Code Setting

270

¡

¡

1

1516 14 1113

DD

Double Key

121920 18 17

SC50560

KO7KO6KO5KO4KO3KO2KO1KO0DoutV

SC50560-001

Vss TEST SEL OSCI OSCO CS KI0

KI1 KI2 KI3

21 3 54 6 7 8 9 10

100pF

455
KHz

100pF

V

SS

V

DD

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4. No Leader Code and Custom Code

IR
LED

V

DD

3V

47F

270

¡

¡

1

DD

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D2 Setting

1516 14 1113

121920 18 17

SC50560

KO7KO6KO5KO4KO3KO2KO1KO0DoutV

SC50560-002

Vss TEST SEL OSCI OSCO CS KI0

KI1 KI2 KI3

21 3 54 6 7 8 9 10

455
KHz

100pF

100pF

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CHIP TOPOGRAPHY

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SC50560

17 16 15 14

18
19
20

1
2
3

13
12
11
10

9
8

7654

Size: 1.40 x 1.21 mm

PAD COORDINATES

No. Symbol X Y No. Symbol X Y

1 P1 -579.10 -35.50 11 P11 579.00 142.30
2 P2 -579.10 -184.50 12 P12 579.00 291.30
3 P3 -579.10 -333.50 13 P13 579.00 440.30
4 P4 -579.10 -482.50 14 P14 270.80 482.50
5 P5 -141.60 -482.50 15 P15 121.80 482.50
6 P6 8.3 -482.50 16 P16 -27.20 482.50
7 P7 421.60 -482.50 17 P17 -176.20 482.50
8 P8 579.00 -304.70 18 P18 -579.10 411.50
9 P9 579.10 -155.70 19 P19 -579.10 262.50

10 P10 579.10 -6.70 20 P20 -579.10 113.50

Note: The original point of the coordinate is the die center.

(Unit: µm)

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Rev: 2.3 2002-03-21

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PCB WIRE LAYOUT SCHEMATIC:

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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:

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* 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.

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* The emitter of triode connect 1
* Recommended triode use 9014.

resistor at least.

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Rev: 2.3 2002-03-21

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PACKAGE OUTLINE

DIP-20-300-2.54 UNIT: mm

2.54

0.25

B

6.60

SC50560

7.62(300)

0.05

B

0.25

26.4B0.3

0.51MIN

0.46B0.08

1.27

4.36MAX3.00MIN

1.778MAX

15 degree

SOP-20-375-1.27 UNIT: mm

0.4

0.3

B

B

7.6

1.27

12.7B0.25

10.2

B

0.1

0.4

3.1MAX

0.05

B

0.25

9.525(375)

11.43

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Attach

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SC50560

Revision History

Data REV Description Page

2000.12.31 2.0 Change name of company in page footer

2002.01.04 2.1 Delete “or floating “ in “6.code format modes” 6
Modify the “Pin configuration “

2002.02.28 2.2

2002.03.21 2.3 Modify the “figure3” and “figure 4” 4

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Modify the “Application circuit”
Add the “PCB wire layout schematic”
Modify the “Package outline”

1

8-11

13
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