Invention Application
- Patent Title: MULTI-TIME PROGRAMMABLE NON-VOLATILE MEMORY CELL
- Patent Title (中): 多次可编程非易失性存储器单元
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Application No.: PCT/US2016/049082Application Date: 2016-08-26
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Publication No.: WO2017040322A1Publication Date: 2017-03-09
- Inventor: OMID-ZOHOOR, Farrokh Kia , BUI, Nguyen, Duc , LY, Binh
- Applicant: LATTICE SEMICONDUCTOR CORPORATION
- Applicant Address: 111 SW 5th Avenue, Suite 700 Portland, OR 97204 US
- Assignee: LATTICE SEMICONDUCTOR CORPORATION
- Current Assignee: LATTICE SEMICONDUCTOR CORPORATION
- Current Assignee Address: 111 SW 5th Avenue, Suite 700 Portland, OR 97204 US
- Agency: GARRABRANTS, Michael
- Priority: US62/212,686 20150901
- Main IPC: G11C17/16
- IPC: G11C17/16 ; G11C17/18
Abstract:
A non-volatile programmable bitcell has a read enable device with a source coupled with a bitline, an anti-fuse device with a gate coupled with a first write line, a drain coupled with a supply voltage and a source coupled with a drain of the read enable device. The bitcell has a fuse device coupled between a second write line and the drain of the read enable device. A magnitude of current flowing in the bitline, when the read enable device is enabled for reading, is dependent both on (1 ) a voltage level applied to the first write line and anti-fuse device state and on (2) a voltage level applied to the second write line and fuse device state. Usages include in a memory array, such as for FPGA configuration memory. The bitcell can be used as a multi-time programmable element, or to store multiple bit values.
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