SC2128C-C20D datasheet, PDF - EEWORLD Datasheet

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SC2128C-C20D: DescriptionREMOTE FAN CONTROL IC; File Size514KB，13 Pages; ManufacturerSilan; Websitehttp://www.silanic.com.cn/; Hangzhou Silan Microelectronics Co., Ltd. (SSE stock code: Silan Micro, 600460) is located in Hangzhou High-tech Industrial Development Zone. It is a high-tech enterprise specializing in integrated circuit chip design and semiconductor microelectronics related product production. The company's current main products are integrated circuits and semiconductor products.

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SC2128C-C20D Overview

REMOTE FAN CONTROL IC

SC2128C-C20D Preview

Silan

Semiconductors

REMOTE FAN CONTROL IC

DESCRIPTION

The SC2128C is a high performance electronic fan controller LSI,

Speed control, off-timer, rhythm wind, sleep mode, head swing

and/or light control are all built into a single chip. Indicator LED

output, buzzer output, key control input, as well as remote control

decoding circuitry are all provided to build a full function electronic

fan with remote control capability having the highest performance

with the least external components. Pin assignment and application

circuit are optimized for easy PCB layout and cost saving for

electronic fan application.

SC2128C

FEATURES

* High performance CMOS Technology

* Low power consumption

* Optional independent light control

* 90 seconds cycle/6 seconds per step(off step 3 seconds) rhythm

wind pattern

* Built-in remote control decoding circuitry with mask option

custom code

* Available in 16,18,20,22,24 pin package for none, one set or two

sets of swing head and/or light control

* Two sets of swing head and/or light control

* Three operation modes: ordinary, rhythm and rhythm sleep.

DIP-24-300-2.54

APPLICATIONS

* Optimized for fan application

* Suitable for heater fan, cooling fan,

and other home appliances with remote

control, timer and/or output level control

PIN CONFIGURATION

REMOTE

OSCI

OSCO

OFF/BUZZ

SPEED

MODE

24 SO2

23 LO

22 MI

21 ST

20 LED1

SC2128C

19 LED2

18 LED3

17 COM

16 TIMER

15 SO1

14 LIT

13 LORD

SW1 10

LIGHT 11

NC 12

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 1.1

2001.09.26

Silan

Semiconductors

ORDERING INFORMATION

SC2128C

SC2128C- X X X X

S = Swing Head Output(s) Controlled by a Single Key (Mask

Option) Swing Head Outputs Controlled by Double Keys (D can be

D = Two

omitted)

0 = No Swing head Output

1 = 1 Swing head Output

2 = 2 Swing head Outputs

3 = 1 Swing head & Light Control Outputs

4 = 2 Swing head & Light Control Outputs

2 = 1/2/4 Hour, Non-Accumulated Timer

3 = 1/2/4 Hour, Accumulated Timer

4 = 0.5/1/2/4 Hour, Non-Accumulated

Timer

5 = 0.5/1/2/4 Hour, Accumulated Timer

8 = 1/2/4/8 Hour, Non-Accumulated Timer

9 = 1/2/4/8 Hour, Accumulated Timer

D = Non-Memory Start-up & Non-Middle Wind Start-up (Mask

Option)

C = Non-Memory Start-up & Middle Wind Start-up

L = Memory Start-up & Non-Middle Wind Start-up (Mask Option)

M = Memory Start-up & Middle Wind Start-up

Note: SC2128C Standard ICs: SC2128C-C41,

SC2128C-C51, Other options are available upon request and

require a minimum order Quantity. Please contact Silan or your local agent for details.

BLOCK DIAGRAM

OSCI

OSCO

OSC

TIMING

SPEED

CONTROL

REMOTE

FILTER

DECODER

COM

SPEED

TIMER

MODE

SW1

SW2

OFF/MEMS/

BUZZ

LIGHT

KEY

SENSE

TIMER

LED

SCAN

LED1

LED2

LED3

SO1

SWING/

LIGHT

SO2

LIT

MEMORY

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 1.1

2001.09.26

Silan

Semiconductors

ABSOLUTE MAXIMUM RATINGS

Characteristic

Supply Voltage

Input/Output Voltage

Power Dissipation

Operating Temperature

Storage Temperature

SC2128C

Test Conditions

- V

– V

= 5.0

Symbol

, V

Topr

Tstg

Value

0 ~ 6.0

-0.3V ~ V

+0.3V

500

-20 ~ +70

-40 ~ +125

Unit

°C

ELECTRICAL CHARACTERISTICS

Parameter

Supply Voltage

Symbol

Test conditions

Min

4.0

Typ

5.0

Max

6.0

Unit

=5.0V, Oscillator stops.

Stand-by Current

All output floating,

All input fixed to V

Input High Level Voltage

Input Low Level Voltage

Drive Current (COM)

Sink Current (COM)

Drive Current(LED1, LED2, LED3)

Sink Current(LED1, LED2, LED3)

Drive Current (OFF/BUZZ)

Sink Current (OFF/BUZZ)

Sink Current

(LO,MI,ST,SO1, SO2,LIT)

Oscillation frequency

Key Press Duration

Remote Input Bit Duration

OSC

key

bit

=5.0V, Vo=3.5V

=5.0V, Vo=1.5V

=5.0V, Vo=3.5V

=5.0V, Vo=1.5V

=5.0V, Vo=2.5V

-1.5

-12

-4

1.5

-2

-6.5

2.0

21.5

-16.5

6.5

-5.7

3.0

-3.7

-16

32768

2.5

1.5

3.0

134

200

µA

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 1.1

2001.09.26

Silan

Semiconductors

PIN DESCRIPTION

Pin No.

SC2128C

Function

No connection

Remote control sensor input

Negative power supply

Oscillator input Pin

Oscillator output Pin

Positive power supply

OFF control key input, shared with buzzer output

SPEED key control input

MODE key control input

Swing head 1 control key input

Light control key input

No connection

Ordinary wind indicator LED output

Light output

Swing head 1 output

TIMER key control input

Indicator LED common output

Indicator LED output Pin

(Strong) Speed output Pin

(Middle) Speed output Pin

(Low) Speed output Pin

Swing head 2 output

Symbol

REMOTE

OSCI

OSCO

OFF/BUZZ

SPEED

MODE

SW1

LIGHT

LORD

LIT

SO1

TIMER

COM

LED3

LED2

LED1

SO2

I/O

FUNCTIONAL DESCRIPTION

1. CONTROL KEYS

Up to six(6) function keys – SPEED, MODE, TIMER, SW1, LIGHT and OFF/MEMS – may be used on the

control panel of fan to access SC2128C to its full versatility. OFF/BUZZ key input pin serves further as buzzer

output BUZZ pin. All key inputs are internally pulled-high in SC2128C.

SPEED key controls the fan speed. TIMER key adjusts off-timer. MODE key sets fan into various modes of

operation. SW1 key control the head swing of fan. LIGHT key toggles the LIT output ON and OFF. OFF/BUZZ key

resets the fan to idle state when fan is ON. LIT output is not affected by OFF key.

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 1.1

2001.09.26

Silan

Semiconductors

2. SPEED KEY

SC2128C

SPEED key is used to (1) turn on the fan (2) change speed of the fan. SLEEP key my turn on the fan from remote

control handset. All the other key scan NOT turn on the fan. All the other keys, except LIGHT key, can NOT

operate until fan is turned on. The diagram shows the state transition of SC2128C for successive pressing of

SPEED key.

MID

Middle wind start-up optioned

LO=Z

MI=L

ST=Z

SPEED KEY

OFF

LO=Z

MI=Z

ST=Z

SPEED KEY

MI start

LO=Z

MI=L

ST=Z

2-3 sec, delay

LOW

LO=L

MI=Z

ST=Z

Z=high impedence

L=low voltage

STR

LO=Z

MI=Z

ST=L

3. TIMER KEY

TIMER key is used to set time schedule after which SC2128C will automatically restore off state(off-timer).

When the fan is on, pressing TIMER key sets up the off-timer. Each pressing of TIMER key increases the

timer by one step. Each time increment step is determined by various timer options. Either 0.5 or 1 hour

per step may be selected, and either 3 levels or 4 levels timer may be selected. Please see TIMER section

for details.

4. MODE KEY

MODE key is used to bring SC2128C around ORD

(ordinary wind) mode, RTM (rhythm wind ) mode and

RSL(rhythm sleep wind ) mode. In ORD mode, the wind

speed is set by SPEED key and does not change as

time passes. In RTM mode the wind speed cycles

through three rhythm wind, patterns as set by the

SPEED key. In RSL mode, however, the fan

automatically steps down one level (strong to middle,

middle to low) every 30 minutes and keeps in low wind

until off-timer times out. Four modes of operation are

described in details later.

SPEED KEY

OFF

ORD

RSL

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 1.1

2001.09.26

MODE KEY

RTM

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