Invention Grant
- Patent Title: Semiconductor device including a roll call circuit for outputting addresses of defective memory cells
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Application No.: US15492686Application Date: 2017-04-20
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Publication No.: US10068662B2Publication Date: 2018-09-04
- Inventor: Masashi Oya
- Applicant: Micron Technology, Inc.
- Applicant Address: US ID Boise
- Assignee: Micron Technology, Inc.
- Current Assignee: Micron Technology, Inc.
- Current Assignee Address: US ID Boise
- Agency: Dorsey & Whitney LLP
- Priority: JP2013-175122 20130827
- Main IPC: G11C29/00
- IPC: G11C29/00 ; G11C17/16 ; G11C11/4076 ; G11C29/12

Abstract:
A semiconductor device that includes a plurality of memory cells assigned with addresses that are different from each other, a redundant memory cell replacing a defective memory cell among the memory cells, a fuse circuit storing an address of the defective memory cell, an access control circuit accessing the redundant memory cell when the address of the defective memory cell stored in the fuse circuit is supplied, and a roll call circuit outputting the address of the defective memory cell to outside the semiconductor device in a serial manner.
Public/Granted literature
- US20170221588A1 SEMICONDUCTOR DEVICE INCLUDING A ROLL CALL CIRCUIT FOR OUTPUTTING ADDRESSES OF DEFECTIVE MEMORY CELLS Public/Granted day:2017-08-03
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