MC68882EI25A datasheet, PDF - EEWORLD Datasheet

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MC68882EI25A: DescriptionMicroprocessors - MPU MC680X0 FPU COPROCESSOR; Categorysemiconductor The embedded processor and controller; File Size4MB，26 Pages; ManufacturerNXP; Websitehttps://www.nxp.com

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MC68882EI25A Overview

Microprocessors - MPU MC680X0 FPU COPROCESSOR

MC68882EI25A Parametric

Parameter Name	Attribute value
Product Category	Microprocessors - MPU
Manufacturer	NXP
RoHS	Details
Maximum Operating Temperature	+ 70 C
Mounting Style	SMD/SMT
Package / Case	PLCC-68
Minimum Operating Temperature	0 C
Packaging	Tube
Factory Pack Quantity	18
Unit Weight	0.169384 oz

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MOTOROLA

Freescale Semiconductor, Inc.

Order this document

BR5091D

SEMICONDUCTOR

TECHNICAL DATA

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MC68882

Floating-Point

Coprocessor

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The MC68882 floating-point

coprocessor fully implements

the IEEE Standard for Binary Floatin~_+’’,i~’C

Point Arithmetic

(ANSI-IEEE Standard 754-1985) for use with the Motorola M68000 Family of ,,~f@&~i$

processors. An upgrade of the MC68881, it is pin and software compatible with an optimiz$d ~~$~

interface providing in excess of 1.5 times the performance

of the MC68881. It is implem~~~,,

ui;ng

VLSI technology

to give systems designers the highest possible functionality

in a ph~:W&~&mali

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device.

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Intended primarily for use as a coprocessor to the MC68020 or MC68030 32-bi~,~$&@’rocessor

unit (MPU), the MC68882 provides a logical extension to the main MPU integer ~~$~~rocessing

capabilities.

This extension is achieved by providing a very high performan~~oatlng-point

arith-

metic unit and a set of floating-point

data registers which are analogoust$~~t~

&se of the integer

data registers. The MC68882 instruction set is a natural extension of a~j $afi~r members of the

M68000 Family, and it supports all of the addressing modes

of the ~$’~~~.

Due to the flexible

bus interface of the M68000 Family, the MC68882 can be used wj~~ ari~,of the MPU devices of the

M68000 Family and as a peripheral to non-M68000 processors{,{~~ :&+,

.,$>.*), $

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The major features of the MC68882 are:

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Eight general purpose floating-point

data register%!,,,*..l,k*,

?P~M.8’tipporting a full 80-bit extended

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precision real data format (a 64-bit mantissa plus ~~,~~ bit, and a 15-bit signed exponent).

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unit to allow very fast cal$ula~~ons~ with intermediate

precision greater

.3*$;; .

than the extended precision format.

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etc.).

67-bit barrel shifter for high-speed s~jfl~~b d~erations (for normalizing

o Special purpose hardware for high-#~~&k~”&nversion

of binary real memory operands to and

A 67-bit arithmetic

from” the internal

. Reduced

extended

forma~J~$,,~#>

to increase throughput.

coprocessor

instructions,

interfac$~~wad

includ~n@~~5Jarith metic operations.

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Full conformation

to the.#~$~}FEE

754 standard, including all requirements

and suggestions,

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Support of functionsA@”%+,@#ned by the IEEE standard, including a full set of trigonometric

and transcendenta~,:t ‘.’:*w, ,:s

f&ct~ns,

Seven data

type$$.’b~e,

word and long word

integers; single, double,

~$%

,:+

real number$),$ndp-acked

binary coded decimal string real numbers.

Twenty-t~t~&$,~~tants

available

in the on-chip

ROM, including

Virtual @&@@rY/machine

operations.

and interrupt

handling.

and extended

precision

Forty-six

n, e, and powers

of 10,

Effi~~<#~~eChanisms

for procedure calls, context switches,

. ..f\.

. Q&fiC&~~ent instruction execution with the main processor.

,4*j&QQlurrent

instruction execution of multiple floating-point

instructions.

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,~,

“:%.,use with any host processor, on an 8-, 16-, or 32-bit data bus.

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This document contains information

on a new product. Specifications and information

herein are subject to change without notice.

@MoToRoLA

INC.,

1988

. ..

For More Information On This Product,

Go to: www.freescale.com

MOTOROLA

BRW/Rev.

MC68882EI25A Related Products

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