C8279 Datasheet, PDF (1/4 Pages) List of Unclassifed Manufacturers – Programmable Keyboard Display Interface Megafunction

C8279
Programmable
Keyboard Display Interface
Megafunction
General Description
The C8279 is a programmable keyboard and display interface designed for use with microprocessors. The
keyboard portion can provide a scanned interface to a 64-contact key matrix. The display portion provides a
scanned display interface for LED, incandescent and other display technologies.
Features
• Simultaneous Keyboard Display Operation
• Scanned Keyboard Mode
• Scanned Sensor Mode
• Strobed Input Entry Mode
• 8-Character Keyboard FIFO
• 2-Key Lockout or N-key Rollover with Contact Debounce
• Dual 8- or 16-Numeric Display
• Single 16-Character Display
• Right or Left Entry 16-Byte Display RAM
• Mode Programmable from CPU
• Interrupt Scan Timing
• Interrupt Output on Key Entry
• Functionality based on the Intel 8279
CAST, Inc.
March 2004
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