三合微科股�½有限公司
S
AM
H
OP
Microelectronics Corp.
SM3501
FAN CONTROLLER
PANEL DISPLAY
4HR (8HR)
S
M
L
2HR (4HR)
1HR (2HR)
1/2HR (1HR)
SLP
RHY
NOR
TGO
OFF
(ON-OFF)
ON/SPPED
(SPEED)
TIMER
MODE
TGI
* NOTE: "
" Function can be chosen.
BLOCK DIAGRAM
VDD VSS
OPTION1
OPTION2
BUZ
Buzzer
Fan Function Control
SPEED/ MODE/ TIMER/ SWING/
MENORT
OSC1
Oscillator
OSC2
OFF
SPEED
TIMER
MODE
TGI
COM1
COM2
TGO
System Timing Generator
Key Input
Timer
STRONG
MEDIUM
LED Output
Scan_Signal
Output Drive
LOW
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V.2.0 Mar 8,2002