UM9228-1 Datasheet Floppy Disk Separator

Manufacturer: UMC

Datasheet Details

The UM9228-1 is an CMOS integrated circuit desi~ned to complement the 765A (8272A) type of floppy disk controller chip;

especially for IBM PC.

It incorporates a data separator, write precompensation logic, and DMA interface logic.

ClUMC :=:::::::::::: UM9228-1 Floppy Data Separator.

Floppy Data Separator Performs complete data separation function with a little external circuit for floppy disk drives Separates MFM encoded data 5%" double density compatible.
Early and late 250 ns write precompensation.
External 16 MHz clock required.
Compatible with the FOC 765A (8272A) floppy disk controllers.
DMA inte"rface logic.
CMOS technology.
. Single + 5 Volt supply.
TT L compatible.
For IBM PC disk driv.

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