发明名称 |
ENHANCEMENT OF POWER ON RELIABILITY IN A DUAL POWER SUPPLY DIGITAL DEVICE WITH DOWN CONVERTER |
摘要 |
A dual power supply digital device includes a down converter for converting an externally applied supply voltage to a regulated first supply voltage for powering a core part of the logic circuitry of the digital device. A second supply voltage source provides a second supply voltage for powering input buffers of the I/O pads of the digital device. A voltage translator latch stage may be powered at the regulated down converted first supply voltage for replicating a stored inverted replica of a logic value present on a respective I/O pad of the digital device onto an input node of a respective second input logic buffer powered at the regulated core supply voltage. The device may further include a transistor having a turn-on threshold coupling the input node of the second buffer to the regulated down converted core supply voltage, with the transistor having a control gate connected to the second power supply source.
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申请公布号 |
US2008012621(A1) |
申请公布日期 |
2008.01.17 |
申请号 |
US20060457634 |
申请日期 |
2006.07.14 |
申请人 |
STMICROELECTRONICS S.R.L. |
发明人 |
LA MALFA ANTONINO;MESSINA MARCO |
分类号 |
H03L5/00 |
主分类号 |
H03L5/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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