MC68020 Motorola, MC68020 Datasheet - Page 18
MC68020
Manufacturer Part Number
MC68020
Description
(MC68020 / MC68EC020) MICROPROCESSORS USERS MANUAL
Manufacturer
Motorola
Datasheet
1.MC68020.pdf
(306 pages)
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1.1 FEATURES
The main features of the MC68020/EC020 are as follows:
A block diagram of the MC68020/EC020 is shown in Figure 1-1.
1- 2
• 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
• Pipelined Architecture with High Degree of Internal Parallelism Allowing Multiple
• 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
MC68882 Floating-Point Coprocessors and the MC68851 Paged Memory
Management Unit
Instructions To Be Executed Concurrently
M68020 USER’S MANUAL
MOTOROLA
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