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UPD765B

NEC Electronics
Part Number UPD765B
Manufacturer NEC Electronics
Description Single / Double Density Floppy-Disk Controller
Published Dec 30, 2005
Detailed Description NEC NEC Electronics Inc. uPD765A/uPD765B Single/Double Density Floppy-Disk Controller Description The uPD765A/B is an...
Datasheet PDF File UPD765B PDF File

UPD765B
UPD765B

Overview
NEC NEC Electronics Inc.
uPD765A/uPD765B Single/Double Density Floppy-Disk Controller Description The uPD765A/B 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 capableof either IBM 3740singledensity format (FM), or IBM System 34 double density format (MFM) including double-sided recording.
The uPD765A/B provides control signals which simplify the design of an external phase-locked loop and write precompensation circuitry.
The FDC simplifies and handles most of the burdens associated with implementing a floppy disk interface.
Hand-shaking signals are provided in the uPD765A/B which ma...


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