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.
UM8272A-4 Datasheet
