Intel 82077 overview
Intel 82077 Series CHMOS Single-Chip Floppy Disk Controllers The 82077AA floppy disk controller has completely integrated all of the logic required for floppy d...
Product details
Manufactured byIntel
Product groupFloppy Disk Controllers
DescriptionIntel 82077 Series CHMOS Single-Chip Floppy Disk Controllers
OverviewThe 82077AA floppy disk controller has completely integrated all of the logic required for floppy disk control. The 82077AA, a 24 MHz crystal, a resistor package and a device chip select implements a PC AT or PS/2 solution. All programmable options default to compatible values. The dual PLL data separator has better performance than most board level/discrete PLL implementations. The FIFO allows better system performance in multi-master systems (e.g. PS/2, EISA). The 82077AA is available in three versions-82077AA-5, 82077AA and 82077AA-1. 82077AA-1 has all features listed in this data sheet. It supports both tape drives and 4 Mb floppy drives. The 82077AA supports 4 Mb floppy drives and is capable of operation at all data rates through 1 Mbps. The 82077AA-5 supports 500/300/250 Kbps data rates for high and low density floppy drives.The 82077AA is fabricated with Intel's CHMOS III technology and is available in a 68-lead PLCC (plastic) package.
Key FeaturesSingle-Chip Floppy Disk Solution— 100% PC AT* Compatible— 100% PS/2* Compatible— 100% PS/2 Model 30 Compatible— Integrated Drive and Data Bus Buffers Integrated Analog Data Separator— 250 Kbits/sec— 300 Kbits/sec— 500 Kbits/sec— 1 Mbits/sec High Speed Processor Interface Perpendicular Recording Support Integrated Tape Drive Support 12 mA Host Interface Drivers, 40 mA Disk Drivers Four Fully Decoded Drive Select and Motor Signals Programmable Write Pre-compensation Delays Addresses 256 Tracks Directly, Supports Unlimited Tracks 16 Byte FIFO 68-Pin PLCC
Manufacturer, product group, and supply
See who makes this product, where it belongs, and where available inventory may be listed.
Manufactured by
Intel
View Intel profile
Product group
Floppy Disk Controllers
Explore Floppy Disk Controllers Explore CHMOS Single-Chip Floppy Disk Controllers
Available from
Sourcing support available
Start a sourcing request