SC2128A SL, SC2128A Datasheet - Page 6

• Manufacturer Part Number: SC2128A
• Description: REMOTE FAN CONTROL IC
• Manufacturer: SL

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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.
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.
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.
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.
Up to seven function keys – SPEED, MODE, TIMER, SW1, SW2, LIGHT and OFF/MEMS – may be used on
SPEED key controls the fan speed. TIMER key adjusts off-timer. MODE key sets fan into various modes of
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
TIMER key is used to set time schedule after which SC2128A will automatically restore off
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Silan
Semiconductors
OFF
LO=Z
ST=Z
MI=Z
not middle wind start-up optioned
SPEED KEY
MI start
LO=Z
ST=Z
MI=L
6
LOW
LO=L
MI=Z
ST=Z
Z=high impedence
L=low voltage
STR
MID
LO=L
MI=Z
ST=Z
LO=L
ST=Z
MI=Z
Rev: 1.0
2000.12.31