MOTOROLA
M68040 USER’S MANUAL
xiii
TABLE OF CONTENTS (Continued)
Paragraph
Page
Number
Title
Number
9.7.5
Underflow ..........................................................................................9-33
9.7.5.1
Maskable Exception Conditions .....................................................9-34
9.7.5.2
Nonmaskable Exception Conditions .............................................. 9-34
9.7.6
Divide by Zero....................................................................................9-36
9.7.7
Inexact Result ....................................................................................9-36
9.8
Floating-Point State Frames..................................................................9-39
Section 10
Instruction Timings
10.1
Overview ............................................................................................... 10-3
10.2
Instruction Timing Examples ................................................................. 10-5
10.3
CINV and CPUSH Instruction Timing.................................................... 10-8
10.4
MOVE Instruction Timing ...................................................................... 10-9
10.5
Miscellaneous Integer Unit Instruction Timings..................................... 10-11
10.6
Integer Unit Instruction Timings ............................................................10-13
10.7
Floating-Point Unit Instruction Timings .................................................10-29
10.7.1
Miscellaneous Integer Unit Support Timings ..................................... 10-29
10.7.2
Integer Unit Support Timings .............................................................10-30
10.7.3
Timings in the Floating-Point Unit ......................................................10-35
Section 11
MC68040 Electrical and Thermal Characteristics
11.1
Maximum Ratings .................................................................................11-1
11.2
Thermal Characteristics ........................................................................ 11-1
11.3
DC Electrical Specifications ..................................................................11-2
11.4
Power Dissipation .................................................................................11-2
11.5
Clock AC Timing Specifications ............................................................11-3
11.6
Output AC Timing Specifications ..........................................................11-4
11.7
Input AC Timing Specifications ............................................................. 11-5
11.8
MC68040 Thermal Device Characteristics............................................ 11-12
11.8.1
MC68040 Die and Package ...............................................................11-12
11.8.2
MC68040 Power Considerations .......................................................11-12
11.9
MC68040 Thermal Management Techniques .......................................11-14
11.9.1
Still Air................................................................................................11-17
11.9.2
Forced Air ..........................................................................................11-18
11.9.3
With Heat Sink ...................................................................................11-19
11.9.4
With Heat Sink and Forced Air .......................................................... 11-22
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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