发明授权
- 专利标题： Electronic circuit and method for state retention power gating
- 专利标题（中）： 电子电路和状态保持电源门控方法
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申请号： US13634730申请日： 2010-06-11
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公开(公告)号： US08598949B2公开(公告)日： 2013-12-03
- 发明人: Michael Priel , Leonid Fleshel , Anton Rozen
- 申请人： Michael Priel , Leonid Fleshel , Anton Rozen
- 申请人地址： US TX Austin
- 专利权人： Freescale Semiconductor, Inc.
- 当前专利权人： Freescale Semiconductor, Inc.
- 当前专利权人地址： US TX Austin
- 国际申请： PCT/IB2010/052613 WO 20100611
- 国际公布： WO2011/154778 WO 20111215
- 主分类号： G05F1/10
- IPC分类号： G05F1/10
摘要：
A method and a electronic circuit, the method includes: sending to a switching circuit, to a state retention power gating (SRPG) circuit and to a first power source a control signal indicating that the SRPG circuit should operate in a functional mode; coupling, by the switching circuit, a third power grid to a first power grid; supplying power from the first power source to the SRPG circuit via the first power grid, the switching circuit and the third power grid; supplying power from a second power source to a second circuit via a second power grid; sending to the switching circuit, to the SRPG circuit and to the first power source a control signal indicating that the SRPG circuit should operate in a state retention mode; coupling, by the switching circuit, the third power grid to the second power grid; supplying power from the second power source to the SRPG circuit via the second power grid, the switching circuit and the third power grid; supplying power from the second power source to the second circuit via the second power grid; and storing, by the SRPG state information.
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