SILAN SC5262D-IR, SC5262D-RF, SC5262S-IR, SC5262S-RF Datasheet

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REMOTE CONTROL ENCODER

DESCRIPTION

The SC5262 is a remote control encoder paired with SC5272
utilizing CMOS technology. It encodes data and address pins into a
serial coded waveform suitable for RF or IR modulation. SC5262
has a maximum of 12-bits of tri-state address pins providing up to
531,441(or 3
code collision and unauthorized code scanning possibilities.

FEATURES

* Low power consumption and very high noise immunity
* Up to 12 tri-state code address pins or 6 data pins
* Wide operating voltage range(Vcc=3V ~ 15V)
* Single resistor oscillator
* Latch or Momentary output type

12

) address codes; thereby, drastically reducing any

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SC5262

DIP-18

SOP-20

APPLICATION

* Home/automation security system
* Remote control toys or for industrial use
* Remote control fan
* Garage door controller

ORDERING INFORMATION

SC5262X-XX

PIN CONFIGURATION

20 Pin

Package

RF: RF Applicatant, normally omitted
IR: IR Applicatant

S: SOP-20 Package
D: DIP-20 Package
Omitted: DIP-18Package

A0

1

A1
A2
A3

18 Pin

A4

Package

A5
A6/D5
A7/D4

Vss
NC

SC5262

Vcc
Dout
OSC1

OSC2

TE
A11/D0
A10/D1
A9/D2
A8/D3

NC

DIP-20

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 1.0 2000.12.31

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Semiconductors

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BLOCK DIAGRAM

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SC5262

TE

DoutOSC1OSC2

17141615

Vcc

18

OSC

Vss

System

Timing

Control

Logic

Code

Generation

9

Address

87654321 11 12 13

10

A0 A1 A2 A3 A4 A5

The block diagram is for DIP-18(hereinafter is the same)

A6/D5A7/D4A8/D3A9/D2A10/D1A11/

D0

ABSOLUTE MAXIMUM RATINGS

Characteristic Symbol Value Unit

Supply Voltage Vcc -0.3 ~ 16.0 V
Input Voltage Vi -0.3 ~ Vcc+0.3 V
Output Voltage Vo -0.3 ~ Vcc+0.3 V
Maximum Power Dissipation(Vcc=12V) Pa 300 mW
Operating Temperature Topr -20 ~ +70
Storage Temperature Tstg -40 ~ +125

(Ta=25°C)

°C
°C

ELECTRICAL CHARACTERISTICS

(Ta=25°C,Vcc=12V,unless otherwise specified)

Characteristic Symbol Test Condition Min Typ. Max Unit

Supply Voltage Vcc 3 15 V
Supply Current

Dout Output driving Current I

Dout Output sinking Current I

Vcc=12V,OSC stops

Icc

A0~ A11 Open
Vcc=5V,VOH=3V -3 mA
Vcc=8V,VOH=4V -6 mA

OH

Vcc=12V,VOH=6V -10 mA
Vcc=5V,VOL=3V 2 mA
Vcc=8V,VOL=4V 5 mA

OL

Vcc=12V,VOL=6V 9 mA

0.02 0.3

µA

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 1.0 2000.12.31

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PIN DESCRIPTION

Pin No.

18 PIN 20 PIN

1~6 1~6 A0~A5 I

7~8

10~13

14 16

15 17 OSC1 O Oscillator Pin No.1
16 18 OSC2 I Oscillator Pin No.2

17 19 DOUT O

18 20 Vcc -- Positive Power Supply

9 9 Vss -- Negative Power Supply

-- 10~11 NC -- Not Connected

7~8

12~15

Pin Name I/O Description

Code Address pins No. 0~5. These six tri-state pins are
detected by SC5262 to determine the encoded waveform
bit 0 ~bit 5. Each pin can be set to “0”,”1”,”f”(floating).
Code Address pinsNo.6~11/data pins No.5~0. These six

A6/D5~A11/D0 I

TE

tri-state pins are detected by SC5262 to determine the
encoded waveform bit 6 ~bit 11.When these pins are used
as address pins, they can be set to “0”,”1”,”f”.When they
are used as data pins ,they can be set only to “0”,”1”.
Transmission Enable. Active Low Signal.SC5262 outputs

I

the encoded waveform to DOUT whenthis pins is pulled to
LOW.

A resistor connected between
these two pins determine the

fundamental frequency of SC5262.
Data Output Pin. The encoded waveform is serially
outputted to this pin. When SC5262 is not transmitting,
DOUT outputs low(Vss) voltage.

FUNCTIONAL DESCRIPTION

The SC5262 encodes the code address and data set at A0~ A5 and A6/D5 ~ A11/D0 into a special waveform

and outputs it to the Dout when
the IR transmitter for transmission. The Transmitted radio frequency or infrared ray is received by the RF
demodulator or IR receiver and reshaped to the special waveform. SC5272 is then used to decode the waveform
and set the corresponding output pins. Thus completing a remote control encoding and decoding function.

TE

is pulled to “0” (Low state). This waveform is fed to either the RF modulator or

SC5262

1. RF OPERATION

Code Bits

A code bit is the basic component of the encoded waveform, and can be classified as either an AD(Address/Data)

Bit or a SYNC(Synchronous) Bit.

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 two pulse cycles. Each pulse cycle has 16 oscillating time periods. For further details, please
refer to the diagram below:

The Synchronous bit waveform is 4 bits long with 1/8 bit width pulse. Please refer to the diagram below:

1/8 bit width=4a

4 bit width=128a

Note: 1bit =32a

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 1.0 2000.12.31

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