Invention Grant
- Patent Title: Access to multi-port devices
- Patent Title (中): 访问多端口设备
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Application No.: US12767935Application Date: 2010-04-27
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Publication No.: US08565009B2Publication Date: 2013-10-22
- Inventor: Ching-Wei Wu , Lee Cheng Hung , Hung-Je Liao , Jui-Che Tsai
- Applicant: Ching-Wei Wu , Lee Cheng Hung , Hung-Je Liao , Jui-Che Tsai
- Applicant Address: TW
- Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
- Current Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
- Current Assignee Address: TW
- Agency: Lowe Hauptman & Ham, LLP
- Main IPC: G11C11/00
- IPC: G11C11/00

Abstract:
Mechanisms for improving static noise margin and/or reducing misread current in multi-port devices are disclosed. In some embodiments related to dual port SRAM a suppress device (e.g., transistor) is provided at each word line port. When both ports are activated, both suppress devices are on and lower the voltage level of these ports, which in turn lower the voltage level at the node storing the data for the memory. As the voltage level at the data node is lowered, noise margin is improved and read disturb can be avoided.
Public/Granted literature
- US20100271898A1 ACCESS TO MULTI-PORT DEVICES Public/Granted day:2010-10-28
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