N386SX 데이터 시트보기 (PDF) - Intel

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N386SX

Intel387™ SX MATH COPROCESSOR

Intel 

Intel387TM SX

MATH COPROCESSOR

Y New Automatic Power Management

Low Power Consumption

Typically 100 mA in Dynamic Mode

and 4 mA in Idle Mode

Y Socket Compatible with Intel387 Family

of Math CoProcessors

Hardware and Software Compatible

Supported by Over 2100 Commercial

Software Packages

10% to 15% Performance Increase

on Whetstone and Livermore

Benchmarks

Y Compatible with the Intel386TM SX

Microprocessor

Extends CPU Instruction Set to

Include Trigonometric Logarithmic

and Exponential

Y High Performance 80-Bit Internal

Architecture

Y Implements ANSI IEEE Standard

754-1985 for Binary Floating-Point

Arithmetic

Y Available in a 68-Pin PLCC Package

See Intel Packaging Specification Order 231369

The Intel387TM SX Math CoProcessor is an extension to the Intel386TM SX microprocessor architecture The

combination of the Intel387TM SX with the Intel386TM SX microprocessor dramatically increases the process-

ing speed of computer application software that utilizes high performance floating-point operations An internal

Power Management Unit enables the Intel387TM SX to perform these floating-point operations while maintain-

ing very low power consumption for portable and desktop applications The internal Power Management Unit

effectively reduces power consumption by 95% when the device is idle

The Intel387TM SX Math CoProcessor is available in a 68-pin PLCC package and is manufactured on Intel’s

advanced 1 0 micron CHMOS IV technology

240225 – 22

Intel386 and Intel387 are trademarks of Intel Corporation

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

January 1994

Order Number 240225-009

COPYRIGHT INTEL CORPORATION 1995

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