发明授权
US5182810A Isolation gates to permit selective power-downs within a closely-coupled
multi-chip system
失效
隔离门允许紧密耦合的多芯片系统内的选择性掉电
- 专利标题： Isolation gates to permit selective power-downs within a closely-coupled multi-chip system
- 专利标题（中）： 隔离门允许紧密耦合的多芯片系统内的选择性掉电
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申请号： US359246申请日： 1989-05-31
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公开(公告)号： US5182810A公开(公告)日： 1993-01-26
- 发明人: James E. Bartling , Wendell L. Little , Kevin E. Deierling
- 申请人： James E. Bartling , Wendell L. Little , Kevin E. Deierling
- 申请人地址： TX Dallas
- 专利权人： Dallas Semiconductor Corp.
- 当前专利权人： Dallas Semiconductor Corp.
- 当前专利权人地址： TX Dallas
- 主分类号： G06F1/22
- IPC分类号： G06F1/22 ; G06F1/26 ; G06F1/32
摘要：
A battery-backed ancillary power-management chip, in combination with a battery-backed microprocessor or microcontroller, permits a low-power system to achieve a zero-power standby mode with full nonvolatility. The ancillary chip contains transmission gates which can cut off the connection between two other chips if one of them is turned off. This avoids problems of power leakage, substrate pumping, etc., when two chips which are connected together can be independently powered up or powered down.Also provided is a portable data module, which includes a microprocessor and a large LCD display. The disclosed inventions permit the user to operate the display without powering up the microprocessor (to preserve a complex display, e.g. when the user has provided no inputs for a certain length of time), or to operate the microprocessor without the display (e.g. for data transfer or reduction operations).
公开/授权文献
- US4474550A Thermostatic control system 公开/授权日：1984-10-02
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