Disk Controller. 8272 Datasheet

8272 Controller. Datasheet pdf. Equivalent


Part 8272
Description Single / Double Density Floppy Disk Controller
Feature Visit Intel's WWW site for more information on recent products and services. 8272 SINGLE/DOUBLE DEN.
Manufacture Intel Corporation
Datasheet
Download 8272 Datasheet


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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
www.DataSheetM4Uu.clotmi-Sector and Multi-Track Transfer Capability
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
8272 INTERNAL BLOCK DIAGRAM
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8272 SYSTEM BLOCK DIAGRAM







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