Datasheet4U Logo Datasheet4U.com

UM8272A - Floppy Disk Controller

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 Details

Part number UM8272A
Manufacturer UMC
File Size 1.01 MB
Description Floppy Disk Controller
Datasheet download datasheet UM8272A Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
UM821 uP Reset Circuits Union Semiconductor
UM822 uP Reset Circuits Union Semiconductor
UM8237AE-5 CMOS CLOCK GENERATOR & DRIVER ETC
UM82450 Asynchronous Communication Element UMC Corporation
UM8250B Asynchronous Communication Element UMC Corporation

Other Datasheets by UMC

Part Number Description
UM8272A-4 Floppy Disk Controller
UM8237A Programmable DMA Controller
UM8237A-4 Programmable DMA Controller
UM8237A-5 Programmable DMA Controller
UM8250 Asynchronous Communication Element

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
(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
Published: |