Charge-transferred presensing and efficiently precharged negative word-line schemes for low-voltage DRAMs

Abstract

A 256 Mb SDRAM is implemented with a 0.12 /spl mu/m technology to verify two circuit schemes suitable for mobile application. A charge transferred presensing is proposed to achieve fast low-voltage sensing and robust operation. With a precharge disabler for productivity, new negative word-line scheme is also proposed to bypass the majority of discharging current to VSS without switching control.