82078

Features:

Small Footprint and Low Height Packages
Supports Standard 5.0V as Well as Low Voltage 33V Platforms
   -Selectable 33V and 5.0V Configuration
   -5.0V Tolerant Drive Interface
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
Programmable Internal Oscillator
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
Integrated HostDisk Interface Drivers
Integrated Analog Data Separator
   -250 Kbitssec
   -300 Kbits sec
   -500 Kbits sec
   -1 Mbitssec
   -2 Mbitssec
Integrated Tape Drive Support
   -Standard 1 Mbps500 Kbps 250 Kbps Tape Drives
   -New 2 Mbps Tape Drive Mode
Perpendicular Recording Support for 4 MB Drives
Fully Decoded Drive Select and Motor Signals
Programmable Write Precompensation Delays
Addresses 256 Tracks Directly Supports Unlimited Tracks
16 Byte FIFO
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
Available in 64 Pin QFP and 44 Pin QFP Package



Pinout




Description

The 82078 Product Family brings a set of enhanced floppy disk controllers 82078 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 82078 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