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UM8272A-4 - Floppy Disk Controller

This page provides the datasheet information for the UM8272A-4, a member of the UM8272A Floppy Disk Controller family.

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

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.

📥 Download Datasheet

Datasheet preview – UM8272A-4

Datasheet Details

Part number UM8272A-4
Manufacturer UMC
File Size 1.01 MB
Description Floppy Disk Controller
Datasheet download datasheet UM8272A-4 Datasheet
Additional preview pages of the UM8272A-4 datasheet.

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Full PDF Text Transcription

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(l)UMC UM8272A / UM8272A'-4 : : : : : : : : : : : : : Floppy Disk Controller 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/ UM8272A-4 respectively • Single + 5 Volt Power Supply (± 1COAl) General 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 eit
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