Invention Grant
US08300446B2 Ferroelectric random access memory with single plate line pulse during read
有权
读取期间具有单板线脉冲的铁电随机存取存储器
- Patent Title: Ferroelectric random access memory with single plate line pulse during read
- Patent Title (中): 读取期间具有单板线脉冲的铁电随机存取存储器
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Application No.: US12966963Application Date: 2010-12-13
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Publication No.: US08300446B2Publication Date: 2012-10-30
- Inventor: Saim Ahmad Qidwai
- Applicant: Saim Ahmad Qidwai
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent Rose Alyssa Keagy; Wade J. Brady, III; Frederick J. Telecky, Jr.
- Main IPC: G11C11/22
- IPC: G11C11/22

Abstract:
A ferroelectric random access memory (FRAM) with reduced cycle time. During a read cycle, plate line voltages are boosted to a voltage to both transfer charge from the selected row of FRAM cells to corresponding bit lines, and to fully polarize a data state in the selected FRAM cells. In one embodiment of the invention, the fully polarized data states is present in those cells that previously stored that data state; for those cells storing the opposite state, a write-back pulse is executed. In another embodiment of the invention, the fully polarized data state results for each of the selected memory cells, by applying a plate line boost voltage of a higher magnitude. Those cells that are to store the opposite data state, as may be determined following error correction, are written back with that data state.
Public/Granted literature
- US20120147654A1 Ferroelectric Random Access Memory with Single Plate Line Pulse During Read Public/Granted day:2012-06-14
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