发明授权
- 专利标题： Oscillation based access time measurement
- 专利标题（中）： 基于振荡的访问时间测量
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申请号： US10236328申请日： 2002-09-06
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公开(公告)号： US06909301B2公开(公告)日： 2005-06-21
- 发明人: Steven P. Korson , Brian D. Borchers , Bryan Sheffield , Clive Bittlestone , Doug Counce
- 申请人： Steven P. Korson , Brian D. Borchers , Bryan Sheffield , Clive Bittlestone , Doug Counce
- 申请人地址： US TX Dallas
- 专利权人： Texas Instruments Incorporated
- 当前专利权人： Texas Instruments Incorporated
- 当前专利权人地址： US TX Dallas
- 代理商 Rose Alyssa Keagy; W. James Brady, III; Frederick J. Telecky, Jr.
- 主分类号： G01R31/30
- IPC分类号： G01R31/30 ; G11C29/14 ; G11C29/50 ; G01R31/02
摘要：
An embodiment of the invention is a method for measuring access time where the frequency of a ring oscillator is measured with and without a device under test 1 in the ring. Those two frequencies are compared to calculate the access time of the device under test 1. Another embodiment of the invention is circuitry 25 that measures the frequency of a ring oscillator with and without a device under test 1. Again the two frequencies are compared to calculate the access time of the device under test 1.
公开/授权文献
- US20040049711A1 Oscillation based access time measurement 公开/授权日：2004-03-11