UPD8279-5

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. 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...