Invention Grant
- Patent Title: Semiconductor devices
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Application No.: US15810820Application Date: 2017-11-13
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Publication No.: US10580474B2Publication Date: 2020-03-03
- Inventor: Sang Ah Hyun , Yunyoung Lee , Seok Bo Shim , Sang Ho Lee
- Applicant: SK hynix Inc.
- Applicant Address: KR Icheon-si, Gyeonggi-do
- Assignee: SK hynix Inc.
- Current Assignee: SK hynix Inc.
- Current Assignee Address: KR Icheon-si, Gyeonggi-do
- Agency: William Park & Associates Ltd.
- Priority: KR10-2017-0074946 20170614
- Main IPC: G11C11/40
- IPC: G11C11/40 ; G11C11/406 ; G11C11/419 ; G11C11/418 ; G11C29/50 ; G11C29/18 ; G11C29/10 ; G11C11/4072 ; G11C11/408

Abstract:
A semiconductor device may include a refresh control circuit which may generate test addresses that are counted based on a refresh signal and a detection clock signal and may senses logic levels of internal data corresponding to the test addresses to generate a sense signal. The semiconductor device may include a memory circuit may include a plurality of word lines which are selected by the test addresses and may output the internal data stored in memory cells connected to the word lines. The semiconductor device may include an address storage circuit may divide each of the test addresses into a main group and a sub-group to store the main groups and the sub-groups of the test addresses. The address storage circuit may store the sub-groups which are inputted at a point of time that the sense signal is generated, regarding the stored main groups having the same level combination.
Public/Granted literature
- US20180366182A1 SEMICONDUCTOR DEVICES Public/Granted day:2018-12-20
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