Invention Grant
- Patent Title: Method for high speed sensing for extra low voltage DRAM
- Patent Title (中): 用于超低电压DRAM的高速感测方法
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Application No.: US11684811Application Date: 2007-03-12
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Publication No.: US07663953B2Publication Date: 2010-02-16
- Inventor: Hank Cheng , Chen-Hui Hsieh , Chung-Cheng Chou
- Applicant: Hank Cheng , Chen-Hui Hsieh , Chung-Cheng Chou
- 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: G11C7/00
- IPC: G11C7/00

Abstract:
A method and apparatus are provided for sensing in low voltage DRAM memory cells. A method according to one embodiment includes: providing a DRAM circuit having a memory cell, a sense amplifier including a pre-charge circuit connected to a first voltage source and a back-to-back inverter including a first and second NMOS transistor, each having a source and a first and second PMOS transistor, each having a source. The method further includes the steps of maintaining the voltage of the sources of the first and second NMOS transistors at a first voltage during normal operation and lowering the voltage of the sources of the first and second NMOS transistors from the first voltage to a second voltage during a read operation.
Public/Granted literature
- US20080225617A1 METHOD FOR HIGH SPEED SENSING FOR EXTRA LOW VOLTAGE DRAM Public/Granted day:2008-09-18
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