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Vol. 100, Issue 1, January 2009, pp.27-44





Embedded Processor Based Automatic Temperature Control of VLSI Chips


Narasimha Murthy Yayavaram, Saritha Chappidi, Sukanya Velamakuri

Department of Electronics, S.S.B.N. College (Autonomous), Anantapur, A.P. India

E-mail: yayavaram@yahoo.com



Received: 7 October 2008   /Accepted: 19 January 2009   /Published: 26 January 2009


Abstract: This paper presents embedded processor based automatic temperature control of VLSI chips, using temperature sensor LM35 and ARM processor LPC2378. Due to the very high packing density, VLSI chips get heated very soon and if not cooled properly, the performance is very much affected. In the present work, the sensor which is kept very near proximity to the IC will sense the temperature and the speed of the fan arranged near to the IC is controlled based on the PWM signal generated by the ARM processor. A buzzer is also provided with the hardware, to indicate either the failure of the fan or overheating of the IC. The entire process is achieved by developing a suitable embedded C program.


Keywords: Temperature sensor, ARM processor, VLSI chips, Brushless DC motor


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