Invention Grant
- Patent Title: Semiconductor memory device and semiconductor integrated circuit
- Patent Title (中): 半导体存储器件和半导体集成电路
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Application No.: US13243312Application Date: 2011-09-23
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Publication No.: US08422267B2Publication Date: 2013-04-16
- Inventor: Shunichi Iwanari , Yasuo Murakuki
- Applicant: Shunichi Iwanari , Yasuo Murakuki
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: McDermott Will & Emery LLP
- Priority: JP2009-126244 20090526
- Main IPC: G11C11/22
- IPC: G11C11/22

Abstract:
A semiconductor memory device includes a plurality of memory cells connected to a common bit line, a plurality of select lines each configured to select at least one of the memory cells, a plurality of drive circuits each configured to drive at least one of the select lines, a sense amplifier configured to amplify a voltage occurring at the bit line depending on data stored in the selected memory cell. A memory region where the memory cells are provided has a first region and a second region. When the first region is read, a larger number of the select lines are simultaneously driven by the corresponding common drive circuit than those in the second region, and a larger number of the memory cells are simultaneously selected than those in the second region.
Public/Granted literature
- US20120075905A1 SEMICONDUCTOR MEMORY DEVICE AND SEMICONDUCTOR INTEGRATED CIRCUIT Public/Granted day:2012-03-29
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