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11.1.4
Other Considerations................................................................................ 11-6
11.2
Using an MC68060 in an Existing MC68040 System ................................. 11-6
11.2.1
Power Considerations............................................................................... 11-6
11.2.1.1
DC to DC Voltage Conversion ................................................................ 11-6
11.2.1.1.1
Linear Voltage Regulator Solution........................................................ 11-7
11.2.1.1.2
Switching Regulator Solution................................................................ 11-7
11.2.1.2
Input Signals During Power-Up Requirement....................................... 11-11
11.2.2
Output Hold Time Differences ................................................................ 11-11
11.2.3
Bus Arbitration ........................................................................................ 11-13
11.2.4
Snooping................................................................................................. 11-13
11.2.5
Special Modes ........................................................................................ 11-13
11.2.6
Clocking .................................................................................................. 11-14
11.2.7
PSTx Encoding ....................................................................................... 11-14
11.2.8
Miscellaneous Pullup Resistors .............................................................. 11-15
11.3
Example DRAM Access............................................................................ 11-15
11.4
Thermal Management.............................................................................. 11-17
11.5
Support Devices....................................................................................... 11-20
12.1
Maximum Ratings ....................................................................................... 12-1
12.2
Thermal Characteristics .............................................................................. 12-1
12.3
Power Dissipation ....................................................................................... 12-1
DC Electrical Specifications (Vcc = 3.3 Vdc ± 5%) ..................................... 12-2
12.4
Clock Input Specifications (Vcc = 3.3 Vdc ± 5%)........................................ 12-3
12.5
Output AC Timing Specifications (Vcc = 3.3 Vdc ± 5%) ............................. 12-4
12.6
Input AC Timing Specifications (Vcc = 3.3 Vdc ± 5%) ................................ 12-6
12.7
13.1
Ordering Information ................................................................................... 13-1
13.2
Pin Assignments ......................................................................................... 13-1
13.2.1
MC68060, MC68LC060, and MC68EC060 Pin Grid Array (RC Suffix) .... 13-2
13.2.2
MC68060, MC68LC060, and MC68EC060 Quad Flat Pack (FE Suffix)... 13-3
13.3
Mechanical Data ......................................................................................... 13-4
B.1
Address Translation Differences...................................................................B-1
B.2
Instruction Differences ..................................................................................B-1
MOTOROLA
Section 12
Electrical and Thermal Characteristics
Section 13
Ordering Information and Mechanical Data
Appendix A
MC68LC060
Appendix B
MC68EC060
M68060 USER'S MANUAL
Table of Contents
xvii
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