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ON Semiconductor - Hardware Monitor

Numéro de référence NCT80DBR2G
Description Hardware Monitor
Fabricant ON Semiconductor 
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NCT80DBR2G fiche technique
NCT80
Hardware Monitor with I2C
Serial Interface
The NCT80 is a twowire serially programmable hardware monitor.
It can monitor its on chip temperature via its local sensor, 7 analog
inputs and measure the speed of two fans. Each of the measured values
are compared with programmable limits and if any channel is outside
the programmed limit an interrupt is generated via the INT output pin.
It also has a chassis intrusion detection input pin which is latched on
an intrusion event.
Communication with the NCT80 is accomplished via the I2C
interface which is compatible with industry standard protocols.
Through this interface the NCT80s internal registers may be accessed.
These registers allow the user to read the current temperature, fan
speed and voltages, change the configuration settings and adjust each
channels limits.
The NCT80 is available in a 24lead TSSOP package and operates
over a wide supply range of 2.8 to 5.75 V. This makes the NCT80 ideal
for a wide variety of applications ranging from computers to servers
and test equipment.
Features
OnchipTemperature Sensor
2 Fan Speed Monitoring Inputs
7 Analog Inputs for Voltage Monitoring
Chassis Intrusion Detection
Overtemperature Output
Limit Comparison of Monitored Channels
3 Address Selection Pins
Power Saving Shutdown Mode
I2C Compliant Interface
These Devices are PbFree, Halogen Free/BFR Free and are RoHS
Compliant
http://onsemi.com
TSSOP24
DB SUFFIX
CASE 948H
XXXXX
XXXXG
ALYW
XXXX
A
L
Y
W
G
= Specific Device Code
= Assembly Location
= Wafer Lot
= Year
= Work Week
= PbFree Package
PIN CONNECTIONS
1
INT_IN
A2
SDA
A1
SCL A0/NTEST_OUT
TACH1
AIN0
TACH2
AIN1
BTI AIN2
CI AIN3
GND
AIN4
VINDTD
AIN5
AIN6
GPO
AGND
RST_IN/
RST_OUT/
NTEST_IN
(Top View)
THERM
ORDERING INFORMATION
Device
Package
Shipping
NCT80DBR2G
TSSOP24
(PbFree)
Tape & Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2012
July, 2012 Rev. 0
1
Publication Order Number:
NCT80/D

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