Invention Grant
- Patent Title: Cell structure for dual port SRAM
- Patent Title (中): 双端口SRAM的单元结构
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Application No.: US12533394Application Date: 2009-07-31
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Publication No.: US08009463B2Publication Date: 2011-08-30
- Inventor: Jhon Jhy Liaw
- Applicant: Jhon Jhy Liaw
- Applicant Address: TW Hsin-Chu
- Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
- Current Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
- Current Assignee Address: TW Hsin-Chu
- Agency: Duane Morris LLP
- Main IPC: G11C11/00
- IPC: G11C11/00

Abstract:
A multi-port SRAM cell includes cross-coupled inverters each including a pull-up transistor and at least a pair of pull down transistors. The SRAM cell includes first and second access ports coupled to first and second word line conductors, each access port including a first pass gate transistor coupled to the data storage node and a second pass gate transistor coupled to the data bar storage node, each pass gate transistor being coupled to a respective bit line conductor, wherein the pull down transistors of the first inverter are formed in a first active region, the pull down transistors of the second inverter are formed in a second active region, the pass gate transistors coupled to the data storage node are formed in a third active region and the pass gate transistors coupled to the data bar storage node are formed in a fourth active region.
Public/Granted literature
- US20110026308A1 CELL STRUCTURE FOR DUAL PORT SRAM Public/Granted day:2011-02-03
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