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NCT80 Datasheet(PDF) 1 Page - ON Semiconductor |
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NCT80 Datasheet(HTML) 1 Page - ON Semiconductor |
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1 / 28 page  © Semiconductor Components Industries, LLC, 2012 July, 2012 − Rev. 0 1 Publication Order Number: NCT80/D NCT80 Hardware Monitor with I2C Serial Interface The NCT80 is a two−wire 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 24−lead 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 • On−chipTemperature 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 Pb−Free, Halogen Free/BFR Free and are RoHS Compliant TSSOP−24 DB SUFFIX CASE 948H (Top View) PIN CONNECTIONS ORDERING INFORMATION http://onsemi.com Device Package Shipping† NCT80DBR2G TSSOP−24 (Pb−Free) Tape & Reel XXXXX XXXXG ALYW XXXX = Specific Device Code A = Assembly Location L = Wafer Lot Y = Year W = Work Week G = Pb−Free Package †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. INT_IN SDA SCL TACH1 TACH2 BTI CI GND VDD INT GPO RST_IN/ NTEST_IN RST_OUT/ THERM A2 A1 A0/NTEST_OUT AIN0 AIN1 AIN2 AIN3 AIN4 AIN5 AIN6 AGND 1 |
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