哪位大侠知道DDR4中VPP是干嘛的？

kobeismygod

看到DDR4多了一个VPP的电压，说是字位电压，看起来DDR3应该也需要这个电压，现在DDR4把它单拉出来有啥好处？
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超級狗

節錄自 EE Times︰
2 c. ]* b1 g) t0 ?' d# [; |* ~" RThe DRAM word line requires higher voltages to activate the access transistor, ensuring fast access during the on state and ultra-low leakage during the off-state. The availability of the 2.5V VPP means that the word line voltage does not have to be inefficiently supplied (pumped up) from the 1.2V VDDQ supply, thereby improving energy/power efficiency.
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l888888h

学习了 ...

clp783

路过，等高人指点。