应用于NOR FLASH的可切换极性电荷泵研究

Research on Switchable Polar Charge Pump for NOR FLASH

Dickson电荷泵是最常用的产生芯片内部高压的方法。在嵌入式或者单独的非易失性存储器中,经常利用多个电荷泵来产生正的高压和负的高压。利用高压Deep N-Well的NMOS设计了可以切换极性的电荷泵,可以根据需要产生正的高压或者负的高压。这种设计的优点在于节省面积。

The most common approach used in the generation of on-chip high voltages are based on Dickson charge pump.In embedded and stand-alone designs of non-volatile memories,multiple charge pumps are utilized to generate both positive and negative voltages.The authors present a switchable charge pump design that utilizes high voltage deep N-WELL transistors to generate positive or negative high voltage based on the required mode of operation.Such design saves silicon area.