Invention Grant
- Patent Title: Impedance control circuit and semiconductor device including the same
- Patent Title (中): 阻抗控制电路和包括其的半导体器件
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Application No.: US13610621Application Date: 2012-09-11
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Publication No.: US09077332B2Publication Date: 2015-07-07
- Inventor: Hyeong-Jun Ko
- Applicant: Hyeong-Jun Ko
- Applicant Address: KR Gyeonggi-do
- Assignee: SK Hynix Inc.
- Current Assignee: SK Hynix Inc.
- Current Assignee Address: KR Gyeonggi-do
- Agency: IP & T Group LLP
- Priority: KR10-2011-0116074 20111108
- Main IPC: H03K17/16
- IPC: H03K17/16 ; H03K19/003 ; H03K19/00 ; H03K19/0185
Abstract:
An impedance control circuit includes a pull-up code generator configured to generate pull-up impedance control codes using a voltage of a first node, a pull-up impedance unit configured to pull-up-drive the first node in response to the pull-up impedance control codes, a plurality of dummy impedance units enabled in response to respective select signals and each configured to pull-up-drive a second node in response to the pull-up impedance control codes, a pull-down code generator configured to generate pull-down impedance control codes using a voltage of the second node, and a plurality of pull-down impedance units enabled in response to the respective select signals and each configured to pull-down-drive the second node in response to the pull-down impedance control codes.
Public/Granted literature
- US20130113517A1 IMPEDANCE CONTROL CIRCUIT AND SEMICONDUCTOR DEVICE INCLUDING THE SAME Public/Granted day:2013-05-09
Information query
