MC68EC000 Motorola, MC68EC000 Datasheet - Page 10

• Manufacturer Part Number: MC68EC000
• Description: Core Processor (SCM 68000)
• Manufacturer: Motorola

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MOTOROLA
FlexCore Integrated Processor Typical Die Layout............................................ 1-3
Standard Cell Design Flow................................................................................. 1-6
Programming Model ........................................................................................... 1-7
Status Register................................................................................................... 1-8
Word Organization in Memory.......................................................................... 1-10
Data Organization in Memory........................................................................... 1-12
Input/Output Signals........................................................................................... 2-2
Word Read Cycle Flowchart for 16-Bit Mode ..................................................... 3-2
Byte Read Cycle Flowchart for 8-Bit Mode ........................................................ 3-3
Byte Read Cycle Flowchart for 16-Bit Mode ...................................................... 3-3
Read and Write Cycle Timing Diagram for 8-Bit Mode ...................................... 3-4
Read and Write Cycle Timing Diagram for 16-Bit Mode .................................... 3-5
Word and Byte Read Cycle Timing Diagram for 16-Bit Mode ............................ 3-6
Word Write Cycle Flowchart for 16-Bit Mode ..................................................... 3-8
Byte Write Cycle Flowchart for 8-Bit Mode......................................................... 3-9
Byte Write Cycle Flowchart for 16-Bit Mode....................................................... 3-9
Write Cycle Timing Diagram for 8-Bit Mode ..................................................... 3-10
Word and Byte Write Cycle Timing Diagram for 16-Bit Mode .......................... 3-11
Read-Modify-Write Cycle Flowchart................................................................. 3-13
Read-Modify-Write Cycle Timing Diagram ....................................................... 3-14
3-Wire Bus Arbitration Cycle Flowchart............................................................ 3-18
2-Wire Bus Arbitration Cycle Flowchart............................................................ 3-19
3-Wire Bus Arbitration Timing Diagram............................................................ 3-20
2-Wire Bus Arbitration Timing Diagram............................................................ 3-21
Bus Arbitration Unit State Diagrams................................................................. 3-23
3-Wire Bus Arbitration Timing Diagram—SCM68000 Active ........................... 3-24
3-Wire Bus Arbitration Timing Diagram—Bus Inactive..................................... 3-25
3-Wire Bus Arbitration Timing Diagram—Special Case ................................... 3-26
2-Wire Bus Arbitration Timing Diagram—SCM68000 Active ........................... 3-27
2-Wire Bus Arbitration Timing Diagram—Bus Inactive..................................... 3-28
2-Wire Bus Arbitration Timing Diagram—Special Case ................................... 3-29
Bus Error Timing Diagram................................................................................ 3-31
Retry Bus Cycle Timing Diagram ..................................................................... 3-33
Halt Operation Timing Diagram........................................................................ 3-34
External Asynchronous Signal Synchronization............................................... 3-35
Fully Asynchronous Read Cycle ...................................................................... 3-36
Fully Asynchronous Write Cycle....................................................................... 3-36
Pseudo-Asynchronous Read Cycle.................................................................. 3-37
Pseudo-Asynchronous Write Cycle.................................................................. 3-38
Freescale Semiconductor, Inc.
LIST OF ILLUSTRATIONS
EC000 CORE PROCESSOR USER’S MANUAL
For More Information On This Product,
Go to: www.freescale.com
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