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UPD765B, UPD765A Datasheet - NEC Electronics

UPD765B Single / Double Density Floppy-Disk Controller

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. .

UPD765B Features

* Address mark detection circuitry is internal to the FDC which simplifies the phase-locked loop and read elec- tronics. The track stepping rate, head load time, and head unload time are user-programmable. The uPD765A/uPD765B offers additional features such as multi-track and multi-side read an

UPD765A_NECElectronics.pdf

This datasheet PDF includes multiple part numbers: UPD765B, UPD765A. Please refer to the document for exact specifications by model.
UPD765B Datasheet Preview Page 2 UPD765B Datasheet Preview Page 3

Datasheet Details

Part number:

UPD765B, UPD765A

Manufacturer:

NEC Electronics

File Size:

335.09 KB

Description:

Single / double density floppy-disk controller.

Note:

This datasheet PDF includes multiple part numbers: UPD765B, UPD765A.
Please refer to the document for exact specifications by model.

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TAGS

UPD765B UPD765A Single Double Density Floppy-Disk Controller NEC Electronics

UPD765B Distributor