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386DX 데이터시트 PDF




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부품번호 386DX 기능
기능 32-bit Chmos Microprocessor
제조업체 Intel Corporation
로고 Intel Corporation 로고


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386DX 데이터시트, 핀배열, 회로
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Intel386TM DX MICROPROCESSOR
32-BIT CHMOS MICROPROCESSOR
WITH INTEGRATED MEMORY MANAGEMENT
Y Flexible 32-Bit Microprocessor
8 16 32-Bit Data Types
8 General Purpose 32-Bit Registers
Y Very Large Address Space
4 Gigabyte Physical
64 Terabyte Virtual
4 Gigabyte Maximum Segment Size
Y Integrated Memory Management Unit
Virtual Memory Support
Optional On-Chip Paging
4 Levels of Protection
Fully Compatible with 80286
Y Object Code Compatible with All 8086
Family Microprocessors
Y Virtual 8086 Mode Allows Running of
8086 Software in a Protected and
Paged System
Y Hardware Debugging Support
Y Optimized for System Performance
Pipelined Instruction Execution
On-Chip Address Translation Caches
20 25 and 33 MHz Clock
40 50 and 66 Megabytes Sec Bus
Bandwidth
Y Numerics Support via Intel387TM DX
Math Coprocessor
Y Complete System Development
Support
Software C PL M Assembler
System Generation Tools
Debuggers PSCOPE ICETM-386
Y High Speed CHMOS IV Technology
Y 132 Pin Grid Array Package
Y 132 Pin Plastic Quad Flat Package
(See Packaging Specification Order 231369)
The Intel386 DX Microprocessor is an entry-level 32-bit microprocessor designed for single-user applications
and operating systems such as MS-DOS and Windows The 32-bit registers and data paths support 32-bit
addresses and data types The processor addresses up to four gigabytes of physical memory and 64 terabytes
(2 46) of virtual memory The integrated memory management and protection architecture includes address
translation registers multitasking hardware and a protection mechanism to support operating systems Instruc-
tion pipelining on-chip address translation ensure short average instruction execution times and maximum
system throughput
The Intel386 DX CPU offers new testability and debugging features Testability features include a self-test and
direct access to the page translation cache Four new breakpoint registers provide breakpoint traps on code
execution or data accesses for powerful debugging of even ROM-based systems
Object-code compatibility with all 8086 family members (8086 8088 80186 80188 80286) means the
Intel386 DX offers immediate access to the world’s largest microprocessor software base
Intel386TM DX Pipelined 32-Bit Microarchitecture
Intel386TM DX and Intel387TM DX are Trademarks of Intel Corporation
MS-DOS and Windows are Trademarks of MICROSOFT Corporation
231630 – 49
Other brands and names are the property of their respective owners
Information in this document is provided in connection with Intel products Intel assumes no liability whatsoever including infringement of any patent or
copyright for sale and use of Intel products except as provided in Intel’s Terms and Conditions of Sale for such products Intel retains the right to make
changes to these specifications at any time without notice Microcomputer Products may have minor variations to this specification known as errata
COPYRIGHT INTEL CORPORATION 1995
December 1995
Order Number 231630-011




386DX pdf, 반도체, 판매, 대치품
www.DataSheet4U.com
CONTENTS
5 FUNCTIONAL DATA (Continued)
5 3 Bus Transfer Mechanism
5 3 1 Introduction
5 3 2 Memory and I O Spaces
5 3 3 Memory and I O Organization
5 3 4 Dynamic Data Bus Sizing
5 3 5 Interfacing with 32- and 16-bit Memories
5 3 6 Operand Alignment
5 4 Bus Functional Description
5 4 1 Introduction
5 4 2 Address Pipelining
5 4 3 Read and Write Cycles
5 4 4 Interrupt Acknowledge (INTA) Cycles
5 4 5 Halt Indication Cycle
5 4 6 Shutdown Indication Cycle
5 5 Other Functional Descriptions
5 5 1 Entering and Exiting Hold Acknowledge
5 5 2 Reset during Hold Acknowledge
5 5 3 Bus Activity During and Following Reset
5 6 Self-test Signature
5 7 Component and Revision Identifiers
5 8 Coprocessor Interface
5 8 1 Software Testing for Coprocessor Presence
6 INSTRUCTION SET
6 1 Instruction Encoding and Clock Count Summary
6 2 Instruction Encoding Details
7 DESIGNING FOR ICETM-386 DX EMULATOR USE
8 MECHANICAL DATA
8 1 Introduction
8 2 Package Dimensions and Mounting
8 3 Package Thermal Specification
9 ELECTRICAL DATA
9 1 Introduction
9 2 Power and Grounding
9 3 Maximum Ratings
9 4 D C Specifications
9 5 A C Specifications
10 REVISION HISTORY
NOTE
This is revision 011 This supercedes all previous revisions
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386DX 전자부품, 판매, 대치품
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Intel386TM DX MICROPROCESSOR
1 1 PIN DESCRIPTION TABLE (Continued)
Symbol
Type
Name and Function
HLDA
O BUS HOLD ACKNOWLEDGE output indicates that the Intel386 DX
has surrendered control of its local bus to another bus master
BUSY
I BUSY signals a busy condition from a processor extension
ERROR
I ERROR signals an error condition from a processor extension
PEREQ
I PROCESSOR EXTENSION REQUEST indicates that the processor
extension has data to be transferred by the Intel386 DX
INTR
I INTERRUPT REQUEST is a maskable input that signals the Intel386
DX to suspend execution of the current program and execute an
interrupt acknowledge function
NMI I NON-MASKABLE INTERRUPT REQUEST is a non-maskable input
that signals the Intel386 DX to suspend execution of the current
program and execute an interrupt acknowledge function
RESET
I RESET suspends any operation in progress and places the Intel386
DX in a known reset state See Interrupt Signals for additional
information
N C NO CONNECT should always remain unconnected Connection of a
N C pin may cause the processor to malfunction or be incompatible
with future steppings of the Intel386 DX
VCC I SYSTEM POWER provides the a5V nominal D C supply input
VSS I SYSTEM GROUND provides 0V connection from which all inputs and
outputs are measured
7

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관련 데이터시트

부품번호상세설명 및 기능제조사
386DX

32-bit Chmos Microprocessor

Intel Corporation
Intel Corporation

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