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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

February 1994

COPYRIGHT

INTEL CORPORATION 1996

Order Number 290468-003

82078 CHMOS SINGLE-CHIP

FLOPPY DISK CONTROLLER

Y

Small Footprint and Low Height

Packages

Y

Supports Standard 50V as Well as Low

Voltage 33V Platforms

Selectable 33V and 50V

Configuration

50V Tolerant Drive Interface

Y

Enhanced Power Management

Application Software Transparency

Programmable Powerdown

Command

Save and Restore Commands for 0V

Powerdown

Auto Powerdown and Wakeup

Modes

Two External Power Management

Pins

Consumes No Power While in

Powerdown

Y

Programmable Internal Oscillator

Y

Floppy Drive Support Features

Drive Specification Command

Media ID Capability Provides Media

Recognition

Drive ID Capability Allows the User

to Recognize the Type of Drive

Selectable Boot Drive

Standard IBM and ISO Format

Features

Format with Write Command for

High Performance in Mass Floppy

Duplication

Y

Integrated HostDisk Interface Drivers

Y

Integrated Analog Data Separator

250 Kbitssec

300 Kbits sec

500 Kbits sec

1 Mbitssec

2 Mbitssec

Y

Integrated Tape Drive Support

Standard 1 Mbps500 Kbps

250 Kbps Tape Drives

New 2 Mbps Tape Drive Mode

Y

Perpendicular Recording Support for

4 MB Drives

Y

Fully Decoded Drive Select and Motor

Signals

Y

Programmable Write Precompensation

Delays

Y

Addresses 256 Tracks Directly

Supports Unlimited Tracks

Y

16 Byte FIFO

Y

Single-Chip Floppy Disk Controller

Solution for Portables and Desktops

100% PC-AT Compatible

100% PS2 Compatible

100% PS2 Model 30 Compatible

Fully Compatible with Intel’s 386SL

Microprocessor SuperSet

Integrated Drive and Data Bus

Buffers

Y

Available in 64 Pin QFP and 44 Pin QFP

Package

(See Package Specification Order Number 240800 Package

Type S)

The 82078 Product Family brings a set of enhanced floppy disk controllers These include several features

that allow for easy implementation in both the portable and desktop market The current family includes a 64

pin and a 44 pin part in the smaller form factor QFP package The 33V version of the 64 pin part provides an

ideal solution for the rapidly emerging 33V platforms It also allows for a 50V tolerant floppy drive interface

that lets the users retain their normal 50V drives Another version of the 64 pin part provides support for 2

Mbps data rate tape drives

Other brands and names are the property of their respective owners