SILAN SC2128A-M94D

Silan
Semiconductors SC2128A
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.
FEATURES
DIP-16
* 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)
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
1
2000.12.31
Silan
Semiconductors SC2128A
PIN CONFIGURATION
LO
VSS
MI
OSCI
ST
OSCO
LED1
VDD
OFF/MEMS/
BUZZ
LED2
SC2128A
24 pin SO
REMOTE
20 pin
SO2
22 pin DIP
20 pin
18 pin
16 pin
SW2
LED3
SPEED
COM
MODE
TIMER
SO1
SW1
LIGHT
LIT
NC
NC
ORDERING INFORMATION
SC2128A- X X X X
S = Swing Head Output(s) Controlled by a Single Key (Mask
Option)
D = Two Swing Head Outputs Controlled by Double Keys (D can be
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
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Semiconductors SC2128A
BLOCK DIAGRAM
VDD
VSS
OSCI
OSC
LO
TIMING
OSCO
SPEED
CONTROL
MI
ST
REMOTE
FILTER
DECODER
COM
LED
SCAN
SPEED
TIMER
SW1
KEY
SENSE
SW2
OFF/MEMS/
BUZZ
LED2
LED3
TIMER
MODE
LED1
SO1
MEMORY
LIGHT
SWING/
LIGHT
SO2
LIT
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Semiconductors SC2128A
ABSOLUTE MAXIMUM RATINGS
Characteristic
Supply Voltage
Input/Output Voltage
Power Dissipation
Symbol
Test Conditions
Value
Unit
VDD
--
0 ~ 6.0
V
VI,VO
VDD - VSS
-0.3V ~ VDD+0.3V
V
PD
VDD – VSS = 5.0
500
mW
Operating Temperature
Topr
--
-20 ~ +70
°C
Storage Temperature
Tstg
--
-40 ~ +125
°C
ELECTRICAL CHARACTERISTICS
Parameter
Symbol
Supply Voltage
VDD
Test conditions
--
Min
Typ
Max
Unit
4.0
5.0
6.0
V
--
134
200
µA
VDD-1.5
--
--
V
VDD=5.0V, Oscillator stops.
Stand-by Current
Iq
All output floating,
All input fixed to VDD.
Input High Level Voltage
VIH
--
Input Low Level Voltage
VIL
--
--
--
1.5
V
Drive Current (COM)
IOH
VDD=5.0V, Vo=3.5V
15
21.5
--
mA
Sink Current (COM)
IOL
VDD=5.0V, Vo=1.5V
-12
-16.5
--
mA
VDD=5.0V, Vo=3.5V
5
6.5
--
Drive
Current
(LED1,
LED2,
IOH
mA
LED3)
Sink Current (LED1, LED2, LED3)
IOL
VDD=5.0V, Vo=1.5V
-4
-5.7
--
mA
Drive Current (OFF/BUZZ)
IOH
VDD=5.0V, Vo=2.5V
1.5
3.0
--
mA
Sink Current (OFF/BUZZ)
IOL
VDD=5.0V, Vo=2.5V
-2
-3.7
--
mA
IOL
VDD=5.0V, Vo=2.5V
-6.5
-16
--
mA
--
32768
--
Hz
Sink Current
(LO,MI,ST,SO1, SO2,LIT)
Oscillation frequency
fOSC
--
Key Press Duration
Tkey
--
80
--
--
ms
Remote Input Bit Duration
Tbit
--
2.0
2.5
3.0
ms
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
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Semiconductors SC2128A
PIN DESCRIPTION
Pin No.
Symbol
16
18
PIN
PIN
20
20
22
24
PIN
PIN
PIN
PIN
Note1
Note2
Note3
Note4
I/O
Function
VDD
5
5
5
6
6
6
--
Positive power supply
VSS
2
2
2
3
3
3
--
Negative power supply
COM
10
12
14
13
15
17
O
Indicator LED common output
LED1
13
15
17
16
18
20
O
LED2
12
14
16
15
17
19
O
LED3
11
13
15
14
16
18
O
Indicator LED output pins
SPEED
7
7
7
8
8
8
I
SPEED key control input
MODE
8
8
8
9
9
9
I
MODE key control input
TIMER
9
11
13
12
14
16
I
TIMER key control input
SW1
--
9
9
10
10
10
I
Swing head 1 control key input
SW2
--
--
--
1
1
1
I
Swing head 2 control key input
6
6
6
7
7
7
I/O
LIGHT
--
--
10
--
11
11
I
Light control key input
SO1
--
10
12
11
13
15
O
Swing head 1 output
SO2
--
--
--
20
22
24
O
Swing head 2 output
LIT
--
--
11
--
12
14
O
Light output
LO
16
18
20
19
21
23
O
MI
15
17
19
18
20
22
O
ST
14
16
18
17
19
21
O
REMOTE
1
1
1
2
2
2
I
Remote control sensor input
OSCI
3
3
3
4
4
4
I
Oscillator input pin
OFF/MEMS/
BUZZ
OFF control key input, shared with
buzzer output
Speed outputs
OSCO
4
4
4
5
5
5
O
Oscillator output pin
NC
--
--
--
--
--
12
I
No connection
NC
--
--
--
--
--
13
I
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
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Semiconductors SC2128A
FUNCTIONAL DESCRIPTION
1. CONTROL KEYS
Up to seven function keys – SPEED, MODE, TIMER, SW1, SW2, LIGHT and OFF/MEMS – may be used on
the control panel of fan to access SC2128A to its full versatility. OFF/MEMS key input pin serves further as buzzer
output BUZZ pin. All key inputs are internally pulled-high in SC2128A.
SPEED key controls the fan speed. TIMER key adjusts off-timer. MODE key sets fan into various modes of
operation. SW1 and SW2 keys control the head swing of fan. LIGHT key toggles the LIT output ON and OFF.
OFF/MEMS key resets the fan to idle state when fan is ON. It starts fan into memory mode if pressed when fan is
OFF, provided memory option is enabled. LIT output is not affected by OFF key.
2. SPEED KEY
SPEED key is used to (1) turn on the fan (2) change speed of the fan. OFF/MEMS may also be used to turn on
the fan into memory mode, provided memory mode is enabled. SLEEP key my turn on the fan from remote
control handset. All the other keys can 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 SC2128A for successive pressing of
SPEED key.
Y
MI start
EE
SP
ED
LO=Z
MI=L
ST=Z
D
KE
K
EY
OFF
Y
MID
LO=L
MI=Z
ST=Z
LOW
LO=Z
MI=Z
ST=Z
Z=high impedence
L=low voltage
LO=L
MI=Z
ST=Z
SPEED KEY
KE
E
SP
S
ED
PE
STR
SPEED KEY
D
EE
SP
Y
KE
not middle wind start-up optioned
LO=L
MI=Z
ST=Z
3. TIMER KEY
TIMER key is used to set time schedule after which SC2128A 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.
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M
Y
KE
D
E
E
D
O
SPEED KEY
ORD
SLP
KE
Y
OFF
Y
KE
SO1=L
SO2=Z
EY
1K
SW
SW
E
D
E
RSL
M
O
D
O
5. SW1 and SW2 KEYS
SW1 and SW2 keys control the output status of SO1 and
SO2 outputs which in turn control the head swing of fan.
Depending on the 2SW mask option, SO2 is controlled by
either SW1 or SW2 key. If 2SW option is selected each
pressing of SW1 key toggles SO1 ON(L) and OFF(Z) and
each pressing of SW2 key toggles SO1 ON(L) and OFF(Z).
If 2SW option is not selected, pressing SW1 key cycles
SO1 and SO2 output as shown in the diagram and SW2
key has no effect. 2SW option is described later.
RTM
M
4. MODE KEY
MODE key is used to bring SC2128A around ORD
(ordinary wind) mode, RTM(rhythm wind ) mode, SLP
(sleep 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 SLP and 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.
KE
Y
SC2128A
M
O
Silan
Semiconductors 1K
EY
Fan already ON
SO1=Z
SO2=Z
SW
1
SO1=Z
SO2=L
Z=high impedence
L=low voltage
KE
Y
SO1=L
SO2=L
1
SW
Y
KE
6. LIGHT KEY
LIGHT key toggles LIT output on(L) and off(Z). LIT output can only be controlled with LIGHT key (from both
panel and remote control) and SLEEP key (if available) on remote control handset. OFF key does NOT affect LIT
output. LIT output is NOT affected by OFF key as well as off-timer times out.
7. OFF/MEMS KEY
OFF/MEMS key functions differently depending on whether the fan is ON or OFF. It functions as OFF key when
the fan is ON, and is used to bring SC2128A from any on state into off state. LIT output is NOT affected by OFF
key. When fan is OFF, it functions as MEMS (memory start) and is used to turn on the fan and set to the memory
mode, provided memory mode is enabled. Memory mode is explained later in the MEMORY MODE section.
8. INDICATOR LEDS
Up to twelve(12) indicator LEDs may be constructed on the control panel of fan built with SC2128A. Six(6)
LEDs are constructed as 3x2 LED matrix formed by COM and LED1, LED2, LED3. The other six(6)LEDs are built
in series with TRIAC outputs. The diagrams show how the LED matrix is constructed.
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0
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Silan
Semiconductors SC2128A
low
VDD
LO
middle
Rhythm
MI
COM
strong
ST
Tb0
LED3
Tb1
Tb2
Tb3
Sleep
Swing 1
SO1
Swing 2
LED2
SO2
light
LED1
LIT
VSS
-5V
SC2128A
SC2128A
* Four LEDs (Tb0, Tb1, Tb2, Tb3) are used to indicate the off-timer period. Depending on the base timer step
option, timer step may be 0.5 hour or 1 hour as indicated in the diagram.
If SC2128A is selected with 4 hour timer
option
Tb0=0.5 hour
b1=1 hour
b2=2 hour
b3=4 hour
If SC2128A is selected with 8 hour timer
option
Tb0=1 hour
b1=2 hour
b2=4 hour
b3=8 hour
The time schedule is the sum of all ON LEDs. For example, if SC2128A is programmed with 0.5/1/2/4 hour
accumulated timer option, and is Tb0 is ON, Tb1 is OFF, Tb2 is OFF, Tb3 is ON, then the schedule period is 4.5
hours (0.5 hr + 4 hr).
* Rhythm LED and Sleep LED indicate SC2128A operation modes.
Operation mode
Rhythm LED
Sleep LED
ORD (ordinary wind)
OFF
OFF
RTM (rhythm wind)
ON
OFF
SLP (sleep wind)
OFF
ON
RSL (rhythm sleep wind)
ON
ON
* Three LEDs – Low, Middle and Strong – are used to indicate the respective output status of LO, MI, ST output.
LED being ON indicates output active (L). LED being OFF indicates output inactive (Z). Only one output among
LO, MI and HI may be active at a specific time.
* Swing1 LED, Swing2 LED and Light LED indicated respective output status of SO1, SO2, and LIT.
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Semiconductors SC2128A
9. TIMER
The external timer of SC2128A may be bonding optioned into
: 0.5, 1, 2, 4 hours non-accumulated
: 1, 2, 4, 8 hours non-accumulated
: 0.5, 1, 2, 4 hours accumulated
: 1, 2, 4, 8 hours accumulated
: 1, 2, 4 hours non-accumulated
: 1, 2, 4 hours accumulated
six (6) configurations as shown. Each pressing of TIMER key will
step the internal timer one step up. The actual sequence
depends on the TIMER option selected. The following diagrams
show the timer sequence for each TIMER option. TIMER
automatically counts down as time passes by. The count down
sequence reverses the key sequence and is also shown in the
following diagrams.
TIMER
0.5hr
TIMER
4+
2+
1
0.5hr
0.5hr
0.5hr
0.5hr
TIMER
4+
2+
0.5
TIMER
0.5hr
TIMER
0.5hr
0.5hr
TIMER
4+
1+
0.5
4+
2
TIMER
TIMER
2+
1+
0.5
2+
1
4
0.5hr
TIMER
4+
1
4+
0.5
TIMER
TIM
ER
1hr
8+
4+
2+
1
TIMER
2+
1
1hr
1hr
TIMER
1hr
TIMER
TIMER
8+
4+
2
8+
4+
1
1hr
TIMER
4+
1
4
TIMER
TIMER
8+
4
1hr
TIMER
1hr
8+
2+
1
1hr
TIMER
4+
2+
1
4+
2
1hr
1hr
1hr
1hr
TIMER
TIMER
8+
2
1hr
4
8+
1
8
TIME
R
1hr
TIMER
2
1
ER
2
(5)
1hr
TIMER
TIM
1hr
0.5hr
0.5hr
(3)
None
TIMER
1
None
1hr
TIME
R
TIMER
TIMER
2+
0.5
2
0.5hr
4+
2+
1+
0.5
TIM
ER
TIMER
(6)
TIME
R
0.5hr
0.5hr
TIMER
1+
0.5
1
4+
1
1hr
2hr
TIMER
TIMER
4+
2
1hr
0.5hr
(2)
0.5
2hr
ER
TIM
(1)
4+
2+
1
ER
4
1hr
1hr
TIMER
TIM
TIMER
2+
1
1hr
1hr
2
4hr
TIMER
2
TIME
R
4
2hr
TIMER
None
TIMER
TIMER
1
None
TIME
R
2
TIMER
1
1hr
1hr
TIME
R
TIMER
4
TIMER
0.5
None
1
0.5hr
0.5hr
ER
TIM
TIMER
TIMER
0.5
0.5h
r
TIMER
None
1hr
(4)
10. RHYTHM WIND
SC2128A features rhythm wind mode. It can be set into
rhythm wind mode by pressing MODE key. Furthermore,
there are three levels – strong, middle and low rhythm
wind. Pressing SPEED key cycles SC2128A around the
three levels, from low to middle, middle to strong, then
strong to low. Initial rhythm wind level on entering
RHYTHM wind mode is the same as the ordinary wind
level while leaving ORDINARY wind mode and entering
RHYTHM wind mode. The right diagram depicts the
strong, middle and low rhythm wind patterns.
ST
MI
LO
t=0 Strong rhythm wind pattern
seconds
t=90
t=0
Middle rhythm wind pattern
seconds
t=90
t=0
Low rhythm wind pattern
seconds
t=90
ST
MI
LO
ST
MI
LO
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Semiconductors SC2128A
11. SLEEP WIND MODE
In sleep wind mode, the wind speed steps down
automatically one level every 30 minutes, until it reaches
low wind level. If no off-timer is set, SC2128A keeps in
low wind level. Otherwise, it restores off state when
off-timer times out. To enter sleep wind mode, turn on
the fan by SPEED key first. Adjust to desired LO, MI, ST
wind speed. Press MODE key twice to bring SC2128A
to LOW, MIDDLE or STRONG sleep wind mode as the
LO, MI, ST wind speed set before entering sleep wind
mode. Press MODE key in sleep wind mode forces
SC2128A to leave sleep wind mode and enter rhythm
sleep wind mode.
ST
MI
LO
t=0
ST
hours
t=0.5hr t=1.0hr
timer timeout
Strong sleep mode wind pattern
MI
LO
t=0
hours
t=0.5hr t=1.0hr
timer timeout
Middle sleep mode wind pattern
ST
MI
LO
t=0
hours
t=0.5hr t=1.0hr
timer timeout
Low sleep mode wind pattern
12. RHYTHM SLEEP WIND MODE
Pressing MODE key in sleep wind mode brings
SC2128A into rhythm sleep wind. In rhythm sleep wind
mode, SC2128A outputs LOW, MIDDLE or STRONG
rhythm wind pattern and automatically steps down one
level every 30 minutes until it reaches low rhythm wind
level. If no off-timer is set, SC2128A keeps in low rhythm
wind output. Otherwise it restores off state when the
off-timer times out.
Strong rhythm wind
Middle rhythm wind
Low rhythm wind
hours
t=0
t=0.5hr t=1.0hr
timer timeout
Strong rhythm sleep mode wind pattern
Strong rhythm wind
Middle rhythm wind
Low rhythm wind
hours
t=0
t=0.5hr t=1.0hr
timer timeout
Middle rhythm sleep mode wind pattern
Strong rhythm wind
Middle rhythm wind
Low rhythm wind
hours
t=0
t=0.5hr t=1.0hr
timer timeout
Low rhythm sleep mode wind pattern
13. MEMORY MODE
SC2128A features on-chip operation memory, in which operation state may be stored. OFF/MEMS key also
functions as a special MEMS(memory start) key. If this key is pressed when SC2128A is in off state, SC2128A is
activated into the operation mode stored in the operation memory. After power on, the operation memory is
initialized as follows: middle speed, ordinary wind, none off-timer setting, SO1 and SO2 swing head outputs both
off, LIT output off.
Operation memory memorizes the following:
(1) SPEED
low, middle or strong,
(2) MODE
ordinary, rhythm, sleep or rhythm sleep.
(3) OFF-TIMER:
off-timer setting,
(4) SWING HEAD
SO1 and SO2 output state,
(5) LIGHT
LIT output status.
If the fan is turned on by SPEED key, subsequent adjustments to the fan operation either from pannel key or
from remote control handset do not affect the operation memory. If, however, the fan is turned on by MEMS, the
subsequent adjustments to speed, mode, off-timer, SO1, SO2 and LIT output will update the operation memory to
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Semiconductors SC2128A
the final adjustments, regardless the adjustments are made from panel key or from remote control handset. One
exception is the SLEEP key available on the remote control handset. SLEEP key start or adjusts the fan to the
default sleep settings. Regardless the fan is started by SPEED or by MEMS, SLEEP key does not affect the
operation memory.
14. BUZZER OUTPUT
All valid key pressed except OFF/MEMS initiates a 150ms
duration 4kHz 50% duty cycle pulse train at OFF/MEMS/BUZZ
pin. OFF/MEMS key function as OFF key if pressed when fan is
VDD
in any on state. In this case, it does NOT initiate an output on
BUZZ. OFF/MEMS key functions as MEMORY-START key if
pressed when fan is in off state. In this case, it DOES initiate a
SC2128A
150ms duration 4kHz 50% duty cycle pulse train on BUZZ. Note
OFF/MEMS/
BUZZ
OFF/MEMS key
that when OFF/ MEMS/BUZZ outputs the pulse train, key input
VSS
is suppressed. That is, pressing OFF/MEMS key when the
-5V
buzzer is buzzing is NOT recognized by SC2128A. The
diagram right shows the buzzer connection.
15. REMOTE CONTROL DECODER
SC2128A is designed to be used together with SC2268 infrared ray remote control encoder. Such combination
allows up to 8 remote control keys – SPEED, MODE, TIMER, LIGHT, SLEEP, SW1, SW2, OFF/MEMS – to be
built on the remote control handset. 4 bits customer code, b3 ~ b6, is encoded by SC2268 and decoded by
SC2128A in order to avoid remote control contention between devices. With SC2268, b3 is determined by
bonding option; b4, b5 and b6 are determined by connecting respective c4, c5, c6 pin to VDD or VSS. With
SC2128A, b3 and b6 can be mask programmed upon customer request and with NRE.
The remote control signal coding scheme is fully
Code bit:
compatible with SC2268. Some description follows.
"0" bit:
Please refer to specification of SC2268 for details.
When SC2128A receives a remote control signal at
"1" bit:
0.625ms
its REMOTE pin, it decodes the received waveform
1.875ms
2.5ms
into consecutive “0” bits and “1” bits. It first
compares the received start word against its
customer code. If and only if the start word matches
Start/Code word:
the customer code, it then compares for two
b0
b1
b2
b3
b4
b5
b6
b7
consecutive and matched code words. It then
actuates the command according to the code words
Code frame
start word
1st code word 2nd code word
table shown later.
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2000.12.31
Silan
Semiconductors SC2128A
16. CUSTOMER CODE
The default customer code of SC2128A is internally mask programmed to b0 ~ b7 = 00110011. Code bit b3 ~
b6 may be mask programmed to any value according to customer specification under terms and conditions
agreed by SILAN. Suitable NRE is involved with customizing default customer code. Please refer to the following
table.
Mask Option
Start word
Default Customer Code
b0
b1
b2
b3
b4
b5
b6
b7
0
0
1
1
0
0
1
1
0
0
1
1
0
0
0
1
0
0
1
1
0
1
1
1
0
0
1
1
0
1
0
1
0
0
1
1
1
0
1
1
0
0
1
1
1
0
0
1
0
0
1
1
1
1
1
1
Mask Programmable
0
0
1
1
1
1
0
1
Customer Code
0
0
1
0
0
0
1
1
0
0
1
0
0
0
0
1
0
0
1
0
0
1
1
1
0
0
1
0
0
1
0
1
0
0
1
0
1
0
1
1
0
0
1
0
1
0
0
1
0
0
1
0
1
1
1
1
0
0
1
0
1
1
0
1
17. REMOTE CONTROL KEYS
Up to eight keys may be built on the remote control handset. Except SLEEP key, all keys functions the same
as their panel counterparts. SLEEP key is not available on fan panel, and is only available on remote control
handset. Pressing SLEEP key brings SC2128A to the output states as follows:
SPEED
Middle wind
MODE
RSL wind (may be mask programmed to SLP Wind with NRE)
TIMER
4 hours or 8 hours
SWING
SO1 ON, SO2 OFF
LIGHT
LIT ON
The remote transmission code words are defined in the following table.
SC2268
Code word
Equivalent Key
Corresponding
b0
b1
b2
b3
b4
b5
b6
b7
Keys
SPEED
0
0
1
1
1
0
1
0
I1
MODE
0
1
0
1
1
0
0
0
I2
TIMER
0
1
1
0
0
0
1
0
I3
LIGHT
1
0
0
1
1
1
0
0
I4
SLEEP
1
0
1
0
0
1
1
0
I5
SW2
1
0
1
1
0
0
0
1
I6
SW1
1
1
0
0
0
1
0
1
I7
OFF/MEMS
1
1
0
1
0
0
1
0
I8
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0
12
2000.12.31
Silan
Semiconductors SC2128A
18. VARIOUS OPTIONS
SC2128A accommodates many option possibilities. The options are summarized below:
* Package Option:
Either 16, 18, 20, 22, or 24 pin package.
* Bonding option:
ACC:
Accumulated or non-accumulated timer option.
T0.5:
Timer scale, 0.5/1/2/4 hour timer or 1/2/4/8 timer option.
3LT:
Timer level option, either 4 levels or 3 levels.
NM:
Disable memory mode.
* Metal Option:
b3 ~ b6:
Replaces default customer codes
NMS:
Disable middle wind start-up function
2SW:
Dependent/Independent swing head control option.
RSL:
SLEEP key start-up mode option – select RSL or SLP mode for SLEEP key start-up.
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0
13
2000.12.31
Silan
Semiconductors SC2128A
APPLICATION CIRCUIT
AC
SC2128A
Swing2 220Ω
SW2
SO2
SW2
Low
REMOTE
LO
VSS
MI
OSCI
ST
220Ω
Middle 220Ω
Strong 220Ω
47pf
IR MODULE
32.768kHz
-5V
OSCO
LED1
VDD
LED2
Sleep
47pf
9.1kΩ
Tb2
OFF/MEMS/ LED3
BUZZ
OFF/MEMS
SPEED
Rhythm
Tb0
Tb3
COM
Tb1 TIMER
SPEED
MODE
-5V
TIMER
MODE
Swing1 220Ω
SW1
SO1
SW1
Light
LIGHT
220Ω
LIT
LIGHT
Swing Head 1: Controlled by SW1
Swing Head 2: Controlled by SW2
200kΩ
IN4004
22Ω/2w
2SA1015
AC
VAR
2.5µf/250V
6.8V/1w
AC
FUSE
-5V
1kΩ
470µf
16V
10µf
16V
0.1µf
Supply Circuit
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0
14
2000.12.31
Silan
Semiconductors SC2128A
SC2268 IR TRANSMITTER APPLICATION CIRCUIT
+3V
SPEED
1
I1
Vcc
16
MODE
2
I2
OSC1
15
TIMER
3
I3
OSC2
14
LIGHT
4
I4
Tx OUT
13
SLEEP
5
I5
C4
12
SW2
6
I6
C5
11
SW1
7
I7
C6
10
OFF/MEMS
8
I8
Vss
9
220pf
455kHz
10Ω
220pf
IR LED
A1015
C1815
1kΩ
SC2268
Note: SC2268 is recommended to be used with SC2128A. For this circuit, the “Start Word” is “00110011”
PACKAGE OUTLINE
DIP-16-300-2.54
UNIT:mm
7.62
6.40
0.25
2.54
1.50
15 degree
3.30
5.08
3.51
19.4
0.46
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0
15
2000.12.31