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MON35W42 Datasheet(PDF) 6 Page - SMSC Corporation

Part # MON35W42
Description  Hardware Monitoring IC with Thermal Diode Interface
PDF  60 Pages
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Manufacturer  SMSC [SMSC Corporation]
Direct Link  http://www.smsc.com
Logo SMSC - SMSC Corporation

MON35W42 Datasheet(HTML) 6 Page - SMSC Corporation

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6
PIN DESCRIPTION
I/O12t
- TTL level bi-directional pin with 12 mA source-sink capability
I/O12ts
- TTL level and schmitt trigger
OUT12
- Output pin with 12 mA source-sink capability
AOUT
- Output pin (Analog)
OD12
- Open-drain output pin with 12 mA sink capability
INt
- TTL level input pin
INts
- TTL level input pin and schmitt trigger
AIN
- Input pin (Analog)
DESCRIPTION OF PIN FUNCTIONS
PIN NAME
PIN NO.
TYPE
DESCRIPTION
nIOR
1
IN ts
An active low standard ISA bus I/O Read
Control.
nIOW
2
IN ts
An active low standard ISA bus I/O Write
Control.
CLKIN
3
IN t
System clock input. Can select 48MHz or 24MHz
or 14.318MHz. The default is 24MHz.
D7~D2
4-9
I/O12t
Bi-directional
ISA
bus
Data
lines.
D0
corresponds to the low order bit, with D7 the
high order bit. These pins are activated if pin
ADRMSEL=0.
D1/
PWMOUT4
10
I/O12t
OUT12t
Bi-directional ISA bus Data lines. This pin is
activated if pin ADRMSEL=0. /Fan speed control
PWM output. This pin is activated if pin
ADRMSEL=1.
D0/
PWMOUT3
11
I/O12t
OUT12t
Bi-directional ISA bus Data lines. This pin is
activated if pin ADRMSEL=0. /Fan speed control
PWM output. This pin is activated if pin
ADRMSEL=1.
VID1
12
INt
Voltage Supply readouts from P6. This value is
read in the VID/Fan Divisor Register.
VCC (+5V)
13
POWER
+5V
VCC power. Bypass with the parallel
combination of 10
&F (electrolytic or tantalum)
and 0.1
&F (ceramic) bypass capacitors.
GNDD
14
DGROUND
Internally connected to all digital circuitry.
MR
15
IN ts
Master reset input.
nCASEOPEN
16
INt
CASE OPEN detection. An active low input from
an external device when the case is opened.
This signal can be latched if VBAT is connect to
a battery, even if the MON35W42 is power off.
VID4
17
IN t
Voltage Supply readouts from P6. This value is
read in the bit <0> of Device ID Register.
FAN3IO/
PWMOUT2
18
I/O12t
0V to +5V amplitude fan tachometer input. /
Fan speed control PWM output.



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