发明授权
US07733722B2 Apparatus for implementing eFuse sense amplifier testing without blowing the eFuse
失效
用于实现eFuse读出放大器测试的设备,而不会吹动eFuse
- 专利标题: Apparatus for implementing eFuse sense amplifier testing without blowing the eFuse
- 专利标题(中): 用于实现eFuse读出放大器测试的设备,而不会吹动eFuse
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申请号: US12351908申请日: 2009-01-12
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公开(公告)号: US07733722B2公开(公告)日: 2010-06-08
- 发明人: Anthony Gus Aipperspach , David Howard Allen , Louis Bernard Bushard , Phil Christopher Felice Paone , Gregory John Uhlmann
- 申请人: Anthony Gus Aipperspach , David Howard Allen , Louis Bernard Bushard , Phil Christopher Felice Paone , Gregory John Uhlmann
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 代理商 Joan Pennington
- 主分类号: G11C7/00
- IPC分类号: G11C7/00
摘要:
Apparatus implements effective testing of a sense amplifier for an eFuse without having to program or blow the eFuse. After initial processing of the sense amplifier, testing determines whether the sense amplifier can generate a valid “0” and “1” before programming the eFuse. A first precharge device and a second precharge device that normally respectively precharge a true sense node and a complement sense node to a high voltage are driven separately. For testing, one of the precharge devices is conditionally held off to insure the sense amplifier results in a “0” and “1”. This allows the testing of the sense amplifier devices as well as down stream connected devices. Once testing is complete, both precharge devices are controlled in tandem.
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