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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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