Silan
Semiconductors
REMOTE FAN CONTROL IC
DESCRIPTION
The SC2128A 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.
SC2128A
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
* DIP or SO package(22 pin SO not available)
* Up to 3 dependent/independent swing-head/light output
* Available in 16,18,20,22,24 pin package for none, one set or two
sets of swing head and/or light control
* Four operation modes: ordinary, rhythm, ordinary sleep and
rhythm sleep.
* Memory start-up mode
* 2-3 seconds middle wind start-up(mask option)
DIP-16
APPLICATIONS
* Optimized for fan application
* Suitable for heater fan, cooling fan, and other home appliances
with remote control, timer and/or output level control
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0
2000.12.31
1
Silan
Semiconductors
PIN CONFIGURATION
SW2
REMOTE
VSS
OSCI
16 pin
OSCO
VDD
OFF/MEMS/
BUZZ
SPEED
MODE
SW1
LIGHT
NC
SO2
LO
MI
ST
20 pin
LED1
LED2
22 pin DIP
SC2128A
20 pin
SC2128A
LED3
COM
TIMER
SO1
LIT
NC
ORDERING INFORMATION
SC2128A- 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: SC2128A Standard ICs: SC2128A-C31, SC2128A-C51, SC2128A-C80, SC2128A-C81, SC2128A-C82,
SC2128A-C83, SC2128A-C92.
Other options are available upon request and require a minimum order
Quantity. Please contact Silan or your local agent for details.
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0
2000.12.31
2
24 pin SO
18 pin
Silan
Semiconductors
BLOCK DIAGRAM
V
DD
V
SS
SC2128A
OSCI
OSC
OSCO
TIMING
SPEED
CONTROL
LO
MI
ST
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: 1.0
2000.12.31
3
Silan
Semiconductors
ABSOLUTE MAXIMUM RATINGS
Characteristic
Supply Voltage
Input/Output Voltage
Power Dissipation
Operating Temperature
Storage Temperature
SC2128A
Test Conditions
--
V
DD
- V
SS
V
DD
– V
SS
= 5.0
--
--
Symbol
V
DD
V
I
,V
O
P
D
Topr
Tstg
Value
0 ~ 6.0
-0.3V ~ V
DD
+0.3V
500
-20 ~ +70
-40 ~ +125
Unit
V
V
mW
°C
°C
ELECTRICAL CHARACTERISTICS
Parameter
Supply Voltage
Symbol
V
DD
--
Test conditions
Min
4.0
Typ
5.0
Max
6.0
Unit
V
V
DD
=5.0V, Oscillator stops.
Stand-by Current
Iq
All output floating,
All input fixed to V
DD
.
Input High Level Voltage
Input Low Level Voltage
Drive Current (COM)
Sink Current (COM)
Drive
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
f
OSC
T
key
T
bit
--
--
--
--
80
2.0
32768
--
2.5
--
--
3.0
Hz
ms
ms
I
OL
I
OH
I
OL
I
OL
V
DD
=5.0V, Vo=1.5V
V
DD
=5.0V, Vo=2.5V
V
DD
=5.0V, Vo=2.5V
V
DD
=5.0V, Vo=2.5V
-4
1.5
-2
-6.5
-5.7
3.0
-3.7
-16
--
--
--
--
mA
mA
mA
mA
Current
(LED1,
LED2,
V
IH
V
IL
I
OH
I
OL
I
OH
--
--
V
DD
=5.0V, Vo=3.5V
V
DD
=5.0V, Vo=1.5V
V
DD
=5.0V, Vo=3.5V
V
DD
-1.5
--
15
-12
5
--
--
21.5
-16.5
6.5
--
1.5
--
--
--
V
V
mA
mA
mA
--
134
200
µA
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0
2000.12.31
4
Silan
Semiconductors
PIN DESCRIPTION
Pin No.
Symbol
16
PIN
V
DD
V
SS
COM
LED1
LED2
LED3
SPEED
MODE
TIMER
SW1
SW2
OFF/MEMS/
BUZZ
LIGHT
SO1
SO2
LIT
LO
MI
ST
REMOTE
OSCI
OSCO
NC
NC
5
2
10
13
12
11
7
8
9
--
--
6
--
--
--
--
16
15
14
1
3
4
--
--
SC2128A
20
PIN
Note2
18
PIN
5
2
12
15
14
13
7
8
11
9
--
6
--
10
--
--
18
17
16
1
3
4
--
--
20
PIN
Note1
22
PIN
Note3
24
PIN
Note4
I/O
Function
5
2
14
17
16
15
7
8
13
9
--
6
10
12
--
11
20
19
18
1
3
4
--
--
6
3
13
16
15
14
8
9
12
10
1
7
--
11
20
--
19
18
17
2
4
5
--
--
6
3
15
18
17
16
8
9
14
10
1
7
11
13
22
12
21
20
19
2
4
5
--
--
6
3
17
20
19
18
8
9
16
10
1
7
11
15
24
14
23
22
21
2
4
5
12
13
--
--
O
O
O
O
I
I
I
I
I
I/O
I
O
O
O
O
O
O
I
I
O
I
I
Positive power supply
Negative power supply
Indicator LED common output
Indicator LED output pins
SPEED key control input
MODE key control input
TIMER key control input
Swing head 1 control key input
Swing head 2 control key input
OFF control key input, shared with
buzzer output
Light control key input
Swing head 1 output
Swing head 2 output
Light output
Speed outputs
Remote control sensor input
Oscillator input pin
Oscillator output pin
No connection
No connection
Note1 : One swing head control plus light control type
Note2 : Two Sets of Swing Head Control Type
Note3 : DIP Package Only
Note4 : SO Package Only
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0
2000.12.31
5
PCB Design
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