| 发明名称 | Self-refresh device and semiconductor device including the self-refresh device | ||
| 摘要 | A self-refresh device is disclosed, which relates to a technology for generating a self-refresh period by reflecting refresh characteristics of an actual cell in a semiconductor device. The self-refresh device includes: a period generation unit configured to output a period control signal by comparing an output voltage of a dummy cell with a reference signal; a phase detection unit configured to detect a phase of the period control signal in response to an oscillation signal having a fixed period; and a refresh signal output unit configured to output a self-refresh period signal in response to the oscillation signal and an output signal of the phase detection unit. | ||
| 申请公布号 | US9460774(B1) | 申请公布日期 | 2016.10.04 |
| 申请号 | US201514841811 | 申请日期 | 2015.09.01 |
| 申请人 | SK hynix Inc. | 发明人 | Lee Hyeng Ouk |
| 分类号 | G11C7/00;G11C11/406 | 主分类号 | G11C7/00 |
| 代理机构 | William Park & Associates LTD. | 代理人 | William Park & Associates LTD. |
| 主权项 | 1. A self-refresh device comprising: a period generation unit configured to output a period control signal by comparing an output voltage of a dummy cell with a reference signal; a phase detection unit configured to detect a phase of the period control signal in response to an oscillation signal having a fixed period; and a refresh signal output unit configured to output a self-refresh period signal in response to the oscillation signal and an output signal of the phase detection unit. | ||
| 地址 | Icheon-si, Gyeonggi-do KR | ||