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February 1990
Order Number: 271103-001
M80C286
HIGH PERFORMANCE CHMOS MICROPROCESSOR
WITH MEMORY MANAGEMENT AND PROTECTION
Military
Y
High Speed CHMOS III Technology
Y
Pin for Pin, Clock for Clock, and
Functionally Compatible with the HMOS
M80286
(See M80286 Data Sheet, Order
Y
271028-003)
Y
Stop Clock Capability
D Uses Less Power (see I
CCS
Specification)
Y
10 MHz Clock Rate
Y
68 Lead Pin Grid Array Package
Y
68 Lead Ceramic Quad Flatpack
Package
(See Packaging Spec., Order
Y
231369)
Y
Military Temperature Range:
b
55
§
C to
a
125
§
C (T
C
INTRODUCTION
The M80C286 is an advanced 16 bit CHMOS III microprocessor designed for multi-user and multi-tasking
applications that require low power and high performance. The M80C286 is fully compatible with its predeces-
sor the HMOS M80286 and object-code compatible with the M8086 and M80386 family of products. In
addition, the M80C286 has a power down mode which uses less power, making it ideal for mobile applications.
The M80C286 has built-in memory protection that maintains a four level protection mechanism for task isola-
tion, a hardware task switching facility and memory mangement capabilities that map 2
30
bytes (one gigabyte)
of virtual address space per task (per user) into 2
24
bytes (16 megabytes) of physical memory.
The M80C286 is upward compatible with M8086 and M8088 software. Using M8086 real address mode, the
M80C286 is object code compatible with existing M8086, M8088 software. In protected virtual address mode,
the M80C286 is source code compatible with M8086, M8088 software which may require upgrading to use
virtual addresses supported by the M80C286’s integrated memory management and protection mechanism.
Both modes operate at full M80C286 performance and execute a superset of the M8086 and M8088 instruc-
tions.
The M80C286 provides special operations to support the efficient implementation and execution of operating
systems. For example, one instruction can end execution of one task, save its state, switch to a new task, load
its state, and start execution of the new task. The M80C286 also supports virtual memory systems by providing
a segment-not-present exception and restartable instructions.
271103–1
Figure 1. M80C286 Internal Block Diagram
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M80C287 | 80-Bit CHMOS III Numeric Processor Exetension(80位CHMOS III數(shù)字處理器擴(kuò)展) |
| M80C51FB | CHMOS Single-Chip 8-Bit Microcontroller(CHMOS單芯片8位微控制器) |
| M80C86 | CHMOS 16-Bit Microcontroller(16位CHMOS 微處理器) |
| M80C86-20 | CHMOS 16-Bit Microcontroller(16位CHMOS 微處理器) |
| M80C86-2 | 16-BIT CHMOS MICROPROCESSOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M80C287 | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:80-BIT CHMOS III NUMERIC PROCESSOR EXTENSION |
| M80C31BH | 制造商:ROCHESTER 制造商全稱:ROCHESTER 功能描述:CMOS SINGLE - CHIP 8-BIT MICROCOMPUTER 64K program Memory Space |
| M80C31F | 制造商:OK International 功能描述: |
| M80C31FV-1 | 制造商:OKI Semiconductor 功能描述:8-BIT, 16 MHZ, MICROCONTROLLER, PQFP44 |
| M80C39H | 制造商:OK International 功能描述:Electronic Component |
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