Datasheet Summary
(l)UMC
UM8272A / UM8272A'-4
: : : : : : : : : : : : : Floppy Disk Controller
Features
- IBM patible 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
- patible 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...