UM8272A - Floppy Disk Controller

UMC

The UM8272A by UMC is a Floppy Disk Controller. Below is the official datasheet preview.

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UM8272A Floppy Disk Controller by UMC - Datasheet Preview — Official preview page of the **UM8272A** Floppy Disk Controller datasheet (UMC).

Datasheet Details

Part number	UM8272A
Manufacturer	UMC
File Size	1.01 MB
Description	Floppy Disk Controller
Datasheet	UM8272A_UMC.pdf
Additional preview pages of the UM8272A datasheet.

UM8272A Product details

Description

The UM8272A is an LSI Floppy DIsk Controller (FDC) Chip, which contains the circuitry and control functions for interfacing a processor to 4 Floppy Disk Drives, It is capable of supporting either IBM 3740 single density format (F rvi), or IBM System 34 Double Density fo rmat (MFM) including double sided recording, The UM8272A Pin Configuration Block Diagram RESET RD WR CS AO DBo DBl DB2 DB3 DB4 DBs DB6 DB7 DRO DACK TC IDX INT ClK GND VCC RW/SEEK lCT/DIR FR/STP HDl RDY WP/TS FlT/TRo PS o PS

Features

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.
Drives Up to 4 Floppy or Mini-Floppy Disks.
Data Transfers in DMA or Non-DMA Mode.
Parallel Seek Operations on Up to Four Drives.
Compatible with all intel and Most Other Mlcropro- cessors.
SIngle-Phase 8MHz/4MHz Clock for UM8272A/ UM82.

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Published: May 18, 2006 |