Invention Publication
- Patent Title: MEMORY IDDQ-TESTABLE THROUGH CUMULATIVE WORD LINE ACTIVATION
- Patent Title (中): 可测试我DDQ内存累积一字线启动
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Application No.: EP95907132.0Application Date: 1995-02-15
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Publication No.: EP0698273A1Publication Date: 1996-02-28
- Inventor: SACHDEV, Manoj
- Applicant: Philips Electronics N.V.
- Applicant Address: Groenewoudseweg 1 NL-5621 BA Eindhoven NL
- Assignee: Philips Electronics N.V.
- Current Assignee: Philips Electronics N.V.
- Current Assignee Address: Groenewoudseweg 1 NL-5621 BA Eindhoven NL
- Agency: Verdonk, Peter Lambert F. M., et al
- Priority: EP19940200591 19940309
- International Announcement: WO1995024774 19950914
- Main IPC: G01R31
- IPC: G01R31 ; G11C8 ; G11C29
Abstract:
An SRAM has a plurality of respective memory cells coupled to a respective one of a plurality of word lines and to a pair of bit lines. The SRAM comprises IDDQ test means to render the word lines active in parallel by cumulatively increasing a number of active ones among the word lines. This permits the writing of a specific logic state in all cells of a column through the tiny bit line drivers that are progressively assisted by the cells already written, thus avoiding the use of additional heavy write circuitry for IDDQ test purposes only.
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