8272

Visit Intel's WWW site for more information on recent products and services. 8272 SINGLE/DOUBLE DENSITY FLOPPY DISK CONTROLLER &amstrad; IBM Compatible in Both Single and Double Density Recording Formats Programmable Data Record Lengths: 128,256,512, or 1024 Bytes/Sector  Multi-Sector and Multi-Track Transfer Capability www.DataSheet4U.com  Drive up to 4 Floppy Disks  Data Scan Capability - Will Scan a Single Sector or an Entire Cylinder's Worth of Data Fields, Comparing on a Byte by Byte Basis, Data in the Processor's Memory with Data Read from the Diskette  Data Transfers in DMA or Non-DMA Mode  Parallel Seek Operations on Up to Four Drives  Compatible with Most Microprocessors including 8080A,8085A,8086 and 8088  Single-Phase 8 Mhz Clock  Single +5 Volt Power Supply  Available in 40-Pin Plastic Dual-in-Line Package   The 8272 is a LSI Floppy Disk Controller (FDC) Chip, which contains the curcuitry and control functions for interfacing a processor to 4 Floppy Disk Drives. It is capable of supporting either IBM 3740 single density format (FM), or IBM System 34 Double Density format (MFM) including double sided recording. The 8272 provides control signals which simplify the design of an external phase locked loop, and write precompensation circuitry. The FDC simplifies and handles most of the burdens associated with implementing a Floppy Disk Drive Interface. PIN CONFIGURATION 8272 INTERNAL BLOCK DIAGRAM www.DataSheet4U.com 8272 SYSTEM BLOCK DIAGRAM DESCRIPT...