M68040 查看數據表（PDF） - Motorola => Freescale

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M68040

16-/32-Bit Virtual Memory Microprocessor

Motorola => Freescale 

Freescale Semiconductor, Inc.

TABLE OF CONTENTS (Continued)

Paragraph

Number

Title

Page

Number

B.4

B.5

B.5.1

B.5.2

B.6

B.7

B.7.1

B.7.2

B.7.3

B.7.4

B.7.5

B.7.6

B.7.7

Special Modes Of Operation .................................................................B-8

Exception Processing............................................................................B-10

Unimplemented Floating-Point Instructions and Exceptions ............. B-10

MC68EC040 Stack Frames ...............................................................B-11

Software Considerations .......................................................................B-12

MC68EC040 Electrical Characteristics ................................................. B-12

Maximum Ratings ..............................................................................B-12

Thermal Characteristics .....................................................................B-12

DC Electrical Specifications ...............................................................B-13

Power Dissipation ..............................................................................B-13

Clock AC Timing Specifications .........................................................B-14

Output AC Timing Specifications ....................................................... B-15

Input AC Timing Specifications..........................................................B-16

C.1

C.1.1

C.1.2

C.1.3

C.2

C.2.1

C.2.2

C.2.3

C.2.4

C.3

C.4

C.5

C.6

C.6.1

C.6.1.1

C.6.1.2

C.6.1.3

C.6.1.4

C.6.1.5

C.6.2

C.6.3

C.6.4

C.6.5

Appendix C

MC68040V and MC68EC040V

Additional Signals..................................................................................C-1

Low Frequency Operation (LFO) .......................................................C-2

Loss of Clock (LOC) ..........................................................................C-2

System Clock Disable (SCD)............................................................. C-2

Low-Power Stop Mode ..........................................................................C-3

Bus Arbitration and Snooping ............................................................C-5

Low Frequency Operation ................................................................. C-5

Changing BCLK Frequency ...............................................................C-5

LPSTOP Instruction Summary ..........................................................C-6

Clocking During Normal Operation .......................................................C-7

Reset Operation ....................................................................................C-7

Power Cycling .......................................................................................C-9

MC68040V and MC68EC040V JTAG (Preliminary) .............................. C-10

Instruction Shift Register ...................................................................C-11

EXTEST .........................................................................................C-12

HIGHZ ............................................................................................C-12

SAMPLE/PRELOAD ......................................................................C-12

CLAMP ................................ ........................................................... C-12

BYPASS ................................ ......................................................... C-13

Boundary Scan Register.................................................................... C-13

Restrictions ........................................................................................C-16

Disabling The IEEE Standard 1149.1A Operation............................. C-16

MC68040V and MC68EC040V JTAG Electrical Characteristics ....... C-17

MOTOROLA

M68040 USER’S MANUAL

xv

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