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UPD8279-5 - PROGRAMMABLE KEYBOARD/DISPLAY INTERFACE

Datasheet Summary

Features

  • Programmable by Processor.
  • 32 HEX or 16 Alphanumeric Displays.
  • 64 Expandable to 128 Keyboard.
  • Simultaneous Keyboard and Display.
  • 8 Character Keyboard - FIFO.
  • 2 Key Lockout or N Key Roll.

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Datasheet preview – UPD8279-5

Datasheet Details

Part number UPD8279-5
Manufacturer NEC
File Size 479.83 KB
Description PROGRAMMABLE KEYBOARD/DISPLAY INTERFACE
Datasheet download datasheet UPD8279-5 Datasheet
Additional preview pages of the UPD8279-5 datasheet.

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Full PDF Text Transcription

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NEe Microcomputers, Inc. NEe fLPD8279·5 PROGRAMMABLE KEYBOARD/DISPLAY INTERFACE DESCR IPTION The ~PD8279-5 is a programmable keyboard and display Input/Output device. It provides the user with the ability to display data on alphanumeric segment displays or simple indicators. The display RAM can be programmed as 16 x 8 or a dual 16 x 4 and loaded or read by the host processor. The display can be loaded with right or left entry with an auto-increment of the display RAM address. The keyboard interface provides a scanned signal to a 64 contact key matrix expandable to 128. General sensors or strobed keys may also be used_ Keystrokes are stored in an 8 character FIFO and can be either 2 key lockout or N key rollover. Keyboard entries generate an interrupt to the processor.
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