Motorola M68000 8-/16-/32-Bit Microprocessors User Manual

About this manual

This manual covers the complete family of 8‑/16‑/32‑bit Motorola M68000 microprocessors, including the M68000, M68008, M68010, MC68HCO000, MC68HC001 and MC68EC000. It provides an overview of the processor architecture, programmer's model, signal descriptions, bus operations, exception handling, and timing diagrams for both 8‑bit and 16‑bit instruction sets.

Later sections describe electrical and thermal characteristics, AC/DC specifications, and ordering information such as pin assignments and package dimensions. Appendices give details on loop‑mode operation and peripheral interfaces.

What's inside

• Overview
• Introduction
• Signal Description
• 8‑Bit Bus Operations
• 16‑Bit Bus Operations
• Exception Processing
• 8‑Bit Instruction Timing
• 16‑Bit Instruction Timing
• MC68010 Instruction Timing
• Electrical and Thermal Characteristics

Specifications

Frequently asked questions

Which bus cycles actually move data?

Only two of the five bus cycles move data – the MOVE and DBEQ instructions.

What conditions cause the MC68010 to exit loop mode?

Loop mode is exited by interrupts, trace exceptions, reset operations, or bus errors.

Where can I find the maximum ratings for the M68000 series?

Maximum ratings are listed in section 10 of the manual.