This part is a kind of semiconductor called ADM1021A.

Function of this product has System Temperature Monitor Microcomputer.

Manufacturers : Analog Devices

Image and pinout :

Some of the text within the PDF file :

Low Cost Microprocessor, System Temperature Monitor Microcomputer ADM1021A FEATURES PRODUCT DESCRIPTION Alternative to the ADM1021 On-chip and remote temperature sensing No calibration necessary 1°C accuracy for on-chip sensor 3°C accuracy for remote sensor Programmable overtemperature/undertemperature limits Programmable conversion rate 2-wire SMBus serial interface Supports system management bus (SMBus) alert 200 μA max operating current 1 μA standby current 3 V to 5.5 V supply Small 16-lead QSOP package APPLICATIONS Desktop computers Notebook computers Smart batteries Industrial controllers Telecom equipment Instrumentation The ADM1021A1 is a two-channel digital thermometer and undertemperature/overtemperature alarm, intended for use in personal computers and other systems requi [ ... ]

ADM1021A PDF Datasheet Download