MC68020FC16 データシートの表示（PDF） - Motorola => Freescale

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MC68020FC16

MICROPROCESSORS USER’S MANUAL

Motorola => Freescale 

1.1 FEATURES

The main features of the MC68020/EC020 are as follows:

• Object-Code Compatible with Earlier M68000 Microprocessors

• Addressing Mode Extensions for Enhanced Support of High-Level Languages

• New Bit Field Data Type Accelerates Bit-Oriented Applications—e.g., Video Graphics

• An On-Chip Instruction Cache for Faster Instruction Execution

• Coprocessor Interface to Companion 32-Bit Peripherals—the MC68881 and

MC68882 Floating-Point Coprocessors and the MC68851 Paged Memory

Management Unit

• Pipelined Architecture with High Degree of Internal Parallelism Allowing Multiple

Instructions To Be Executed Concurrently

• High-Performance Asynchronous Bus Is Nonmultiplexed and Full 32 Bits

• Dynamic Bus Sizing Efficiently Supports 8-/16-/32-Bit Memories and Peripherals

• Full Support of Virtual Memory and Virtual Machine

• Sixteen 32-Bit General-Purpose Data and Address Registers

• Two 32-Bit Supervisor Stack Pointers and Five Special-Purpose Control Registers

• Eighteen Addressing Modes and Seven Data Types

• 4-Gbyte Direct Addressing Range for the MC68020

• 16-Mbyte Direct Addressing Range for the MC68EC020

• Selection of Processor Speeds for the MC68020: 16.67, 20, 25, and 33.33 MHz

• Selection of Processor Speeds for the MCEC68020: 16.67 and 25 MHz

A block diagram of the MC68020/EC020 is shown in Figure 1-1.

1-2

M68020 USER’S MANUAL

MOTOROLA

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