Invention Grant
- Patent Title: Memory cell system and method
- Patent Title (中): 记忆体系统和方法
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Application No.: US13416923Application Date: 2012-03-09
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Publication No.: US08964451B2Publication Date: 2015-02-24
- Inventor: Douglas P. Sheppard
- Applicant: Douglas P. Sheppard
- Agency: Carstens & Cahoon, LLP
- Agent David W. Carstens; Kevin M. Klughart
- Main IPC: G11C11/00
- IPC: G11C11/00 ; G11C11/412 ; G11C8/14 ; G11C11/418 ; G11C7/10 ; G11C7/06 ; G11C7/00 ; G11C7/08

Abstract:
A memory cell system/method incorporating reduced transistor counts and/or improved design-for-manufacturability (DFM) is disclosed. The system/method incorporates cross-coupled feedthru (3410)/feedback (3420) amplifiers to implement memory cell state memory, wherein the feedback amplifier incorporates a multi-state output drive capability (3423) allowing the memory cell to be read/written using only one access device (3430) connected to the output (3412) of the feedthru (3410) amplifier. The multi-state output drive capability (3423) modulates the feedback amplifier (3420) drive strength to enable reading/writing of the feedthru amplifier (3410) state with greatly reduced memory cell input fan-in requirements. The invention anticipates replacement of traditional DP/8T/6T/4T memory cell structures with corresponding 6T/6T/5T/3T memory cell configurations, resulting in a 16%-25% transistor reduction depending on memory array application context.
Public/Granted literature
- US20120230130A1 Memory Cell System and Method Public/Granted day:2012-09-13
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