Invention Grant
- Patent Title: Method of making PCB circuit modification from multiple to individual chip enable signals
- Patent Title (中): 将PCB电路修改从多个单芯片使能信号的方法
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Application No.: US11679153Application Date: 2007-02-26
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Publication No.: US07709278B2Publication Date: 2010-05-04
- Inventor: Michael McCarthy , Ning Ye , Naveen Kini
- Applicant: Michael McCarthy , Ning Ye , Naveen Kini
- Applicant Address: US CA Milpitas
- Assignee: SanDisk Corporation
- Current Assignee: SanDisk Corporation
- Current Assignee Address: US CA Milpitas
- Agency: Vierra Magen Marcus & DeNiro LLP
- Main IPC: G01R31/26
- IPC: G01R31/26

Abstract:
A semiconductor package is disclosed having a single CE signal during electrical test and a plurality of CE signals during normal operation thereafter. After electrical testing of the memory die during fabrication, the electrical traces carrying the single CE signal from the memory test pad matrix to each of the memory die may be severed. Severing the electrical traces from the memory test pad matrix electrically isolates the multiple electrical traces between the controller die and memory die, and allows separate and individual CE signals between the controller die and memory die during normal usage of the memory die.
Public/Granted literature
- US20080206904A1 METHOD OF MAKING PCB CIRCUIT MODIFICATION FROM MULTIPLE TO INDIVIDUAL CHIP ENABLE SIGNALS Public/Granted day:2008-08-28
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