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Cost Reduction of a Processor Unit Disclosure Number: IPCOM000036985D
Original Publication Date: 1989-Nov-01
Included in the Prior Art Database: 2005-Jan-29

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Petz, BR Rubish, JR [+details]


In certain computer systems, the primary CPU component is the PU (processor unit) chip. A specific challenge in the definition and design of the PU chips is the limitation presented with the number of input/ output pins (I/Os) allowed when using only one package. This VLSI (very large-scale integration) design presently utilizes a CMOS technology with a substrate having 231 I/Os. The following information describes a method by which the PU chip can further reduce its I/O count by 48 pins, thus allowing it to fit into a less expensive package.