MC68040RC25A Freescale Semiconductor, MC68040RC25A Datasheet - Page 350

• Manufacturer Part Number: MC68040RC25A
• Description: IC MICROPROCESSOR 32BIT 179-PGA
• Manufacturer: Freescale Semiconductor

Specifications of MC68040RC25A

• Processor Type: M680x0 32-Bit
• Speed: 25MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 179-PGA
• Processor Series: M680xx
• Core: CPU32
• Mounting Style: SMD/SMT
• Package: 179PGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Lead Free Status / Rohs Status: Details

11.9.4 With Heat Sink and Forced Air
In the specification provided by Thermalloy, Inc., a chart illustrates the air velocity versus
thermal resistance. This chart applies if airflow is used with the heat sink. Table 11-6 lists
the calculations based on this chart.
11-22
MHz
25
25
25
33
33
33
25
25
25
33
33
33
25
25
25
33
33
33
25
25
25
33
33
33
20
25
33
20
25
33
20
25
33
20
25
33
Airflow Velocity
Thermal Mgmt.
Technique
200 LFM
400 LFM
600 LFM
800 LFM
200 LFM
400 LFM
600 LFM
800 LFM
Table 11-6. Thermal Parameters with Heat Sink and Airflow
Freescale Semiconductor, Inc.
10.0W
10.0W
10.0W
10.0W
6.3 W
6.6 W
8.6 W
7.7 W
8.0 W
6.3 W
6.6 W
8.6 W
7.7 W
8.0 W
6.3 W
6.6 W
8.6 W
7.7 W
8.0 W
6.3 W
6.6 W
8.6 W
7.7 W
8.0 W
4.0 W
5.0 W
6.3 W
4.0 W
5.0 W
6.3 W
4.0 W
5.0 W
6.3 W
4.0 W
5.0 W
6.3 W
For More Information On This Product,
P
D
Defined Parameters
MC68LC040 and MC68EC040
M68040 USER’S MANUAL
Go to: www.freescale.com
110 C
110 C
110 C
110 C
110 C
110 C
110 C
110 C
T
J
MC68040
3 C/W
3 C/W
3 C/W
3 C/W
3 C/W
3 C/W
3 C/W
3 C/W
JC
M
AX
.
Heat-Sink
4.25 C/W
2.30 C/W
1.50 C/W
1.25 C/W
4.25 C/W
2.30 C/W
1.50 C/W
1.25 C/W
Spec.
CA
7.25 C/W
5.25 C/W
4.50 C/W
4.25 C/W
7.25 C/W
5.25 C/W
4.50 C/W
4.25 C/W
JA
Calculated
91.1 C
90.2 C
84.2 C
86.9 C
86.0 C
80.0 C
91.1 C
90.2 C
84.2 C
86.9 C
86.0 C
80.0 C
91.1 C
90.2 C
84.2 C
86.9 C
86.0 C
80.0 C
91.1 C
90.2 C
84.2 C
86.9 C
86.0 C
80.0 C
98.0 C
95.0 C
91.1 C
98.0 C
95.0 C
91.1 C
98.0 C
95.0 C
91.1 C
98.0 C
95.0 C
91.1 C
T
C
MOTOROLA
64.3 C
62.2 C
47.7 C
54.2 C
52.0 C
37.5 C
76.9 C
75.4 C
64.9 C
69.6 C
68.0 C
57.5 C
81.7 C
80.3 C
71.3 C
75.4 C
74.0 C
65.0 C
83.2 C
82.0 C
73.5 C
77.3 C
76.0 C
67.5 C
81.0 C
73.8 C
64.3 C
89.0 C
83.8 C
76.9 C
87.5 C
81.7 C
88.8 C
83.2 C
92.0 C
93.0 C
T
A