Intel 8279 Functional Equivalent Programmable Keyboard/Display Interface

Overview

The DB8279 Programmable Keyboard / Display Interface core is a full function equivalent to the Intel 8279 / Mitsubishi 8279 / NEC uPD8279 devices.

The DB8279 simultaneously and independently interface a keyboard and display to a microprocessor. The keyboard section provides a scanned interface to a 64-contact key matrix keyboard. The display section contains a 16x8 display RAM which refreshes a numeric or alphanumeric segment display.

Key Features

Simultaneous and independent scanning of a keyboard and refresh of a display, significantly offloading these functions from the microprocessor.
Keyboard section:
- 8-character Keyboard FIFO
- 2-Key Lockout or N-key Rollover with Contact Debounce
- Interrupt Output on Key Entry
- Programmable Keyboard Scan & Debounce rates
Display Section:
- Dual 8- or 16-Numeric Display
- Single 16-Character Display
- Right or Left Entry 16-Byte Display RAM with address autoincrement
- Programmable display refresh rate
Available in VHDL, Verilog, or FPGA-Specific Netlist

Benefits

The DB8279 Programmable Keyboard / Display Interface is a silicon-proven Keyboard and segment Display Controller IP core. Customers can work off the large industry knowledge surrounding the Intel 8279 device to get microprocessor system designs with Keyboard / segment Display Controller requirements up and running quickly.

Block Diagram

Deliverables

VHDL or Verilog Source.
Comprehensive testbench suite with expected results.
Synthesis scripts.
Installation Guide.
Technical Reference Manual.

Technical Specifications

Foundry, Node

IBM, LSI. TMSC, UMC, Tower

Maturity

Successful in Customer designs

Availability

Immediately

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