Invention Grant
- Patent Title: Integrated circuit memory elements
- Patent Title (中): 集成电路存储元件
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Application No.: US12057339Application Date: 2008-03-27
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Publication No.: US07768818B1Publication Date: 2010-08-03
- Inventor: Mark T. Chan , Lin-Shih Liu
- Applicant: Mark T. Chan , Lin-Shih Liu
- Applicant Address: US CA San Jose
- Assignee: Altera Corporation
- Current Assignee: Altera Corporation
- Current Assignee Address: US CA San Jose
- Agency: Treyz Law Group
- Agent G. Victor Treyz; David C. Kellogg
- Main IPC: G11C7/00
- IPC: G11C7/00

Abstract:
Memory elements for integrated circuit are provided that have efficient transistor layouts. The integrated circuits may be programmable logic device integrated circuits on which memory elements are formed into arrays. Each memory element may have a pair of cross-coupled inverters, an address transistor, and a clear transistor. The transistors in each memory element may be formed from n-type and p-type semiconductor regions that are crossed by only three gate conductor fingers. Programmable transistors on the integrated circuit may be controlled by static output signals from the memory elements. The programmable transistors may be used to form multiplexers. The multiplexers may be formed from n-type regions that are crossed by only three gate fingers each. The gate fingers of the multiplexers may be aligned with the gate fingers of the transistor structures of the memory elements.
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