发明申请
- 专利标题: Electronic device and method for operating a memory circuit
- 专利标题(中): 用于操作存储器电路的电子设备和方法
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申请号: US11337775申请日: 2006-01-23
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公开(公告)号: US20070171713A1公开(公告)日: 2007-07-26
- 发明人: Bradford Hunter , James Burnett , Jack Higman
- 申请人: Bradford Hunter , James Burnett , Jack Higman
- 申请人地址: US TX Austin
- 专利权人: Freescale Semiconductor, Inc.
- 当前专利权人: Freescale Semiconductor, Inc.
- 当前专利权人地址: US TX Austin
- 主分类号: G11C16/04
- IPC分类号: G11C16/04
摘要:
An electronic device includes a memory cell that utilizes a bi-directional low impedance, low voltage drop full pass gate to connect a bit cell to a bit write line during a write phase, and during a read phase the full pass gate can remain off and a high input impedance read port can acquire and transmit the logic state stored by the memory cell to another subsystem. The full pass gate can be implemented by connecting a P type metal semiconductor field effect transistor (PMOS) in parallel with an NMOS device and driving the gates of the transistors with a differential signal. When a write operation requires a current to flow in a first direction, the PMOS device provides a negligible voltage drop, and when the write operation requires current to flow in a second or the opposite direction, the NMOS device can provide a negligible voltage. This bi-directional low voltage drop low loss switch can increase the write margin of the memory cell wherein the high impedance read port can provide increased isolation for the stored value during the read phase increasing the performance of the memory cell.
公开/授权文献
- US07336533B2 Electronic device and method for operating a memory circuit 公开/授权日:2008-02-26
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