Loading [MathJax]/extensions/MathZoom.js
A high speed low power negative sensing architecture for 3D NAND Flash memory | IEEE Conference Publication | IEEE Xplore

A high speed low power negative sensing architecture for 3D NAND Flash memory


Abstract:

A new sensing architecture aiming at negative threshold voltage detection for 3D NAND Flash memory cells is proposed. This sensing architecture does not need triple well ...Show More

Abstract:

A new sensing architecture aiming at negative threshold voltage detection for 3D NAND Flash memory cells is proposed. This sensing architecture does not need triple well devices and negative voltage supplies. In this architecture, we apply 2 V to source line (SL) rather than 0V which is always used in conventional method. We prove that this architecture is feasible by Technology Computer Aided Design (TCAD) simulation. We have also designed a sense amplifier (SA) to support the proposed sensing architecture. This SA has advantages including lower noise, 9.4% faster read speed, and 51.6% lower power consumption compared to the conventional counterpart.
Date of Conference: 13-14 March 2016
Date Added to IEEE Xplore: 05 May 2016
ISBN Information:
Conference Location: Shanghai, China
No metrics found for this document.

Introduction

Nowadays, 3D NAND Flash has attracted great attentions due to its superiority in high storage density [1]–[3]. However, there is a wide negative threshold voltage distribution in 3D NAND Flash memory due to charge trap mechanism [4]. In conventional negative sensing architecture, negative pump and triple well devices are needed to sense memory cells which have negative threshold voltage. But negative pump increases the design complexity of the peripheral circuit, and triple well devices increase the difficulty and cost of the fabrication process. D'alessandro, et al. proposed a method to sense threshold voltage of −2 V without triple well devices and negative pump [5]. But the SA they proposed has disadvantages such as slow read speed, large power consumption and noise.

Usage
Select a Year
2025

View as

Total usage sinceMay 2016:674
0246810JanFebMarAprMayJunJulAugSepOctNovDec800000000000
Year Total:8
Data is updated monthly. Usage includes PDF downloads and HTML views.

References

References is not available for this document.