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Charge pump circuit for generating positive and negative voltage with reverse current prevention circuit and a nonvolatile memory using the same
Charge pump circuit for generating positive and negative voltage with reverse current prevention circuit and a nonvolatile memory using the same
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机译:具有反向电流防止电路的用于产生正负电压的电荷泵电路以及使用该电荷泵电路的非易失性存储器
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摘要
A charge pump circuit comprising: a first reverse current prevention circuit connected between an external power supply and a first internal node; a first output node, connected to the first internal node, for outputting a first output potential; a second reverse current prevention circuit connected between a second power supply node receiving ground potential and a second internal node; and power supply generation circuit, connected between the first internal node and second internal node, for enhancing the potential of the second internal node as compared to that of the first internal node, wherein the power supply generation circuit is formed on or within a semiconductor substrate, and includes a diode element provided so as to flow a current from the first internal node to the second internal node, and a capacitor having one electrode connected to the first and second nodes, and the other electrode provided with a clock signal, thereby enabling higher outputs on both positive and negative voltages.
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