Book description
Dynamic RAM (DRAM) has wide applications in the computer industry, telecommunications, the military, and the space industry. This book presents an up-to-date account of the theory and design of DRAM, the workhorse of all semiconductor memories. It summarizes the development of and recent advances in manufacturing technology, generation by generation. The text also addresses DRAM cell development capacitor enhancement technologies, different types of leakages, and the circuit and technological aspects of the remedial measures taken.
Table of contents
- Cover
- Half Title
- Title Page
- Copyright Page
- Table of Contents
- Preface
- Acknowledgments
- 1 Random Access Memories
-
2 DRAM Cell Development
- 2.1 Introduction
- 2.2 Planar DRAM Cell
- 2.3 Three-Dimensional Capacitor DRAM Cell
- 2.4 Access Transistor Stacked above Trench Capacitor Cell
- 2.5 Trench Transistor Cell
- 2.6 Buried Storage Electrode Cell
- 2.7 Buried Capacitor or Stacked Transistor Cell
- 2.8 Stacked Capacitor Cells
- References
- 3 DRAM Technologies
-
4 Advanced DRAM Cell Transistors
- 4.1 Introduction
- 4.2 Recess-Channel-Array Transistor
- 4.3 Vertical Depleted Lean-Channel Transistor Structure
- 4.4 FinFET—A Self-Aligned DG-MOSFET
- 4.5 Body Tied MOSFETs/Bulk FinFETs
- 4.6 Multichannel FET
- 4.7 Saddle MOSFET
- 4.8 Saddle FinFET
- 4.9 Surrounding Gate Transistor
- 4.10 Three-Dimensional Memory Architecture: Cell Area Less than 4 F2
- 4.11 BEST and VERIBEST DRAM Cells
- 4.12 Vertical Transistors
- 4.13 Advanced Recessed FinFETs
- References
- 5 Storage Capacitor Enhancement Techniques
-
6 Advanced DRAM Technologies
- 6.1 Introduction
- 6.2 Advanced Cell Structures
- 6.3 Robust Memory Cell—Mechanical Stability of Storage Node
- 6.4 DRAM Cell Transistor Technology
- 6.5 Cell Capacitor Technology
- 6.6 Lithography Technology
- 6.7 Isolation Techniques
- 6.8 Bit Line, Word Line, and Gate Technology
- 6.9 Cell Connections
- 6.10 Interconnection/Metallization Technology
- 6.11 Advanced DRAM Technology Developments
- 6.12 Embedded DRAMs
- References
-
7 Leakages in DRAMs
- 7.1 Introduction
- 7.2 Leakage Currents in DRAMs
- 7.3 Power Dissipation in DRAMs
- 7.4 Cell Signal Charge
- 7.5 Power Dissipation for Data Retention
- 7.6 Low-Power Schemes in DRAM
- 7.7 On-Chip Voltage Converter Circuits
- 7.8 Refresh Time Extension
- 7.9 Sub-Threshold Current Reduction
- 7.10 Multithreshold Voltage CMOS Schemes
- 7.11 VGS Reverse Biasing
- 7.12 Leakage Current Reduction Techniques in DRAMs
- 7.13 Analysis of Sub-Threshold Leakage Reduction
- 7.14 Sub-Threshold Leakage Reduction for Low-Voltage Applications
- 7.15 Data Retention Time and Its Improvement
- References
- 8 Memory Peripheral Circuits
- Index
Product information
- Title: Dynamic RAM
- Author(s):
- Release date: December 2017
- Publisher(s): CRC Press
- ISBN: 9781351832588
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