scholarly journals Multi level cell (MLC) in 3D crosspoint phase change memory array

2021 ◽  
Vol 64 (6) ◽  
Author(s):  
Nanbo Gong
Keyword(s):  
Phase Change ◽  
Phase Change Memory ◽  
Memory Array ◽  
Multi Level ◽  
Change Memory

scholarly journals Speeding Up the Write Operation for Multi-Level Cell Phase Change Memory with Programmable Ramp-Down Current Pulses

Micromachines ◽  
2019 ◽  
Vol 10 (7) ◽  
pp. 461 ◽  
Author(s):  
Chenchen Xie ◽  
Xi Li ◽  
Houpeng Chen ◽  
Yang Li ◽  
Yuanguang Liu ◽  
...  
Keyword(s):  
Phase Change ◽  
Current Source ◽  
Phase Change Memory ◽  
Operation Time ◽  
Access Time ◽  
Fully Differential ◽  
Current Pulses ◽  
Multi Level ◽  
The Impact ◽  
Change Memory

Multi-level cell (MLC) phase change memory (PCM) can not only effectively multiply the memory capacity while maintaining the cell area, but also has infinite potential in the application of the artificial neural network. The write and verify scheme is usually adopted to reduce the impact of device-to-device variability at the expense of a greater operation time and more power consumption. This paper proposes a novel write operation for multi-level cell phase change memory: Programmable ramp-down current pulses are utilized to program the RESET initialized memory cells to the expected resistance levels. In addition, a fully differential read circuit with an optional reference current source is employed to complete the readout operation. Eventually, a 2-bit/cell phase change memory chip is presented with a more efficient write operation of a single current pulse and a read access time of 65 ns. Some experiments are implemented to demonstrate the resistance distribution and the drift.

Multi-level phase-change memory with ultralow power consumption and resistance drift

2021 ◽  
Author(s):  
Bin Liu ◽  
Kaiqi Li ◽  
Wanliang Liu ◽  
Jian Zhou ◽  
Liangcai Wu ◽  
...  
Keyword(s):  
Power Consumption ◽  
Phase Change ◽  
Phase Change Memory ◽  
Multi Level ◽  
Ultralow Power ◽  
Change Memory

Design of Side Bottom-Electrode-Contact for High Density Phase-Change Memory Array

2012 ◽  
Vol 12 (10) ◽  
pp. 7939-7943
Author(s):  
Yan Liu ◽  
Zhitang Song ◽  
Bo Liu ◽  
Jia Xu ◽  
Houpeng Chen ◽  
...  
Keyword(s):  
Phase Change ◽  
Bottom Electrode ◽  
Phase Change Memory ◽  
High Density ◽  
Memory Array ◽  
Electrode Contact ◽  
Change Memory

Multi-Level Phase Change Memory Cells with SiN or Ta2O5Barrier Layers

2012 ◽  
Vol 51 (2S) ◽  
pp. 02BD08 ◽  
Author(s):  
Ashvini Gyanathan ◽  
Yee-Chia Yeo
Keyword(s):  
Phase Change ◽  
Phase Change Memory ◽  
Memory Cells ◽  
Multi Level ◽  
Change Memory

Flexible One Diode-One Phase Change Memory Array Enabled by Block Copolymer Self-Assembly

ACS Nano ◽  
2015 ◽  
Vol 9 (4) ◽  
pp. 4120-4128 ◽  
Author(s):  
Beom Ho Mun ◽  
Byoung Kuk You ◽  
Se Ryeun Yang ◽  
Hyeon Gyun Yoo ◽  
Jong Min Kim ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Phase Change ◽  
Self Assembly ◽  
Phase Change Memory ◽  
Memory Array ◽  
Change Memory
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