UM8272A Description
COUNT ORO DACK INT AD WR AO RESET cs ___-' READY WRITE PROTECT/TWO SIDE INDEK FAULT/TRACK 0 UNIT SELECT 0 UN IT SE LECT 1 MFM MODE RW/SEEK HEAD LOAD HEAD SELECT LOW CURRENT/DIRECTION FAULT RESET/STEP 6-3 UM8272A /UM8272A.4 provides control signals which simplify the design of an external phase locked 10QP and write prepensation circuitry; The FDC simplifies and handles most of the burdens associated with...
UM8272A Key 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
- SIngle-Phase 8MHz/4MHz Clock for UM8272A/
- Single + 5 Volt Power Supply (± 1COAl)