Invention Grant
- Patent Title: Dual port memory device
- Patent Title (中): 双端口存储设备
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Application No.: US12404892Application Date: 2009-03-16
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Publication No.: US07940599B2Publication Date: 2011-05-10
- Inventor: Olga R. Lu , Lawrence F. Childs , Thomas W. Liston
- Applicant: Olga R. Lu , Lawrence F. Childs , Thomas W. Liston
- Applicant Address: US TX Austin
- Assignee: Freescale Semiconductor, Inc.
- Current Assignee: Freescale Semiconductor, Inc.
- Current Assignee Address: US TX Austin
- Main IPC: G11C7/00
- IPC: G11C7/00 ; G11C7/10 ; G11C8/00

Abstract:
A multi-port memory device having a storage node, a precharge node, a first, second, third, and fourth transistor, and a control module. The first transistor includes a current electrode connected to the storage node, another current electrode connected to a first bit line, and a gate connected to a first wordline. The second transistor includes a current electrode connected to the storage node, another current electrode connected to a second bit line, and a gate connected to a second wordline. The third transistor includes a current electrode connected to the reference node, another current electrode connected to the first bit line, and a gate. The fourth transistor includes a current electrode connected to the precharge node, another current electrode connected to the second bit line, and a gate. The control module deactivates the fourth transistor in response to a dummy access of the first storage module at the second transistor.
Public/Granted literature
- US20100232202A1 DUAL PORT MEMORY DEVICE Public/Granted day:2010-09-16
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