This application note describes example software to program the thermal assist unit (TAU)
feature of the MPC750 family of microprocessors. The TAU is an on-chip sensor that
measures the instantaneous junction temperature of the microprocessor. TAU operation is
described in the òThermal Assist Unitó section of the
MPC750 RISC Microprocessor User?s Manual(order #: MPC750UM/AD). Some of the information from the user?s manual is largely repeated in Section 1.1, òThermal Assist Unit Overview,ó and Section 1.2, òThermal Assist Unit Operation,ó as a background to understanding the software, but this application note should be used in conjunction with the user?s manual.
The following technical papers describe the physical implementation of the TAU:
[1] Hector Sanchez, Ross Philip, Jose Alvarez, Gianfranco Gerosa, òA CMOS Temperature
Sensor for PowerPCa RISC Microprocessor,ó Digest of Technical Papers 1997,
IEEE Symposium on VLSI Circuits", pp. 13-14, June 1997 .
[2] Hector Sanchez, Belli Kuttanna, Tim Olson, Mike Alexander, Gian Gerosa, Ross
Philip, and Jose Alvarez, òThermal Management System for High Performance
RISC Microprocessor,óDigest of Technical Papers COMPCON97, pp. 325-331 .