AMD-K6 Datasheet, PDF (277/346 Pages) Advanced Micro Devices – AMD-K6 Processor

20695H/0—March 1998
Preliminary Information
AMD-K6^® Processor Data Sheet
17 Thermal Design
17.1
Package Thermal Specifications
The AMD-K6 processor operating specification calls for the
case temperature (T_C) to be in the range of 0°C to 70°C. The
ambient temperature (T_A) is not specified as long as the case
temperature is not violated. The case temperature must be
measured on the top center of the package. Table 56 shows the
AMD-K6 processor thermal specifications.
Table 56. Package Thermal Specification
T_C Case
θ_JC
Temperature Junction-Case
0°C–70°C
0.77°C/W
Stop Grant Mode
Stop Clock Mode
Maximum Thermal Power
2.9V Component 3.2V Component
166MHz 200MHz
17.2 W 20.0 W
233 MHz
28.3 W
1.45 W 1.53 W
1.75 W
1.0 W
1.0 W
1.0 W
Figure 91 on page 260 shows the thermal model of a processor
w it h a p a s sive t h e rm a l so l u t i on . The c a s e -t o -a m b i e n t
temperature (T_CA) can be calculated from the following
equation:
T_CA = P_MAX • θ_CA
= P_MAX • ( θ_IF + θ_SA)
Where:
P_MAX
θ_CA
θ_IF
θ_SA
= Maximum Power Consumption
= Case-to-Ambient Thermal Resistance
= Interface Material Thermal Resistance
= Sink-to-Ambient Thermal Resistance
Chapter 17
Thermal Design
259