Invention Grant
- Patent Title: Measuring setup and hold times using a virtual delay
- Patent Title (中): 使用虚拟延迟测量设置和保持时间
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Application No.: US14263329Application Date: 2014-04-28
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Publication No.: US09479179B2Publication Date: 2016-10-25
- Inventor: Andy T. Nguyen , Navneet Jain
- Applicant: Globalfoundries Inc.
- Applicant Address: KY Grand Cayman
- Assignee: GLOBALFOUNDRIES INC.
- Current Assignee: GLOBALFOUNDRIES INC.
- Current Assignee Address: KY Grand Cayman
- Agency: Ditthavong & Steiner, P.C.
- Main IPC: G01R31/02
- IPC: G01R31/02 ; H03K23/50 ; H03K5/22 ; G01R31/317

Abstract:
Methodologies and an apparatus for measuring setup and hold times of fabricated semiconductor devices are provided. Embodiments include: providing a first digital frequency divider having an input and an output, the input of the first digital frequency divider receiving a first signal indicating an oscillating signal with a first delay; providing a second digital frequency divider having an input and output, the input of the second digital frequency divider receiving a second signal indicating the oscillating signal with a second delay; and providing a flip-flop having an input and an output, wherein the input of the flip-flop is coupled to the output of the second digital frequency divider and a data signal and clock signal for measuring a set-up time or hold time of a device under test are generated.
Public/Granted literature
- US20150309113A1 MEASURING SETUP AND HOLD TIMES USING A VIRTUAL DELAY Public/Granted day:2015-10-29
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