| 发明名称 |
Refresh circuits |
| 摘要 |
A refresh circuit includes a period signal generation circuit configured to drive a control node according to a level of the control node, discharge first and second currents from the control node in response to the first temperature signal, and generate a period signal, a division signal generator configured to divide the period signal to generate a first division signal and a second division signal, and a selector configured to select one of the first and second division signals in response to a second temperature signal and for outputting the selected division signal as a refresh signal. |
| 申请公布号 |
US9070476(B2) |
申请公布日期 |
2015.06.30 |
| 申请号 |
US201213716041 |
申请日期 |
2012.12.14 |
| 申请人 |
SK Hynix Inc. |
发明人 |
Kim Dong Kyun |
| 分类号 |
G11C11/402;H03L7/00;H03L1/02;G11C11/406;H03B19/14 |
主分类号 |
G11C11/402 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A refresh circuit comprising:
a period signal generation circuit configured to drive a control node according to a voltage level of the control node and generate first and second currents from the control node in response to a first temperature signal, the period signal generation circuit generating a period signal based on the first and second currents generated; a division signal generator configured to divide the period signal to generate a first division signal and a second division signal; and a selector configured to select one of the first and second division signals in response to a second temperature signal and to output the selected division signal as a refresh signal, wherein the period signal generation circuit is configured to generate the first current when the first temperature signal has a first level, and to generate the second current when the first temperature signal has a second level. |
| 地址 |
Icheon KR |
