MODELLING AND SIMULATION OF 2-BIT SONOS NONVOLATILE MEMORY

• Main Author: Mochamad Rifqie, Dary
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/46317
• Institution: Institut Teknologi Bandung

Moore's Law is the result of observations made in 1965 by Gordon Moore who said that the number of transistors on integrated circuits (ICs) doubled every 2 years. The law becomes the standard for the development and growth of chip technology. At that time, Moore predicted that this trend would continue in the future. However, the development of IC technology is experiencing considerable obstacles because the size of a chip is nearing the size of an atom, where at that size the phenomenon of quantum mechanics has been felt. Therefore, it takes the techniques to develop a new chip so that components such as processors, memory, sensors and others develop. The proposed development is assessed in terms of speed, power consumption and size, although in terms of size it is predicted to one day be stopped. In this research, a technique for developing a nonvolatile memory chip is proposed in which the structure and way of working is based on how the MOSFET works. The capacity of a memory itself is measured by how much data can be stored in that memory. By predicting the size of a MOSFET transistor itself will stop, then the addition of a memory capacity will one day affect the size of the memory chip. Thus, this study aims to increase the capacity of a memory without increasing its size. The proposed development technique is at the device level where each cell in memory is capable of storing 2 bits of data. The focus of this research is the simulation and modeling of nonvolatile memory with SONOS (semiconductor-oxide-nitide-oxide-semiconductor) structures with the ability to store 2-bit data per device. The process of this research includes several things including determining the geometrical structure and dimensions of the SONOS device to be simulated, analyzing the character of the SONOS device, determining the program and read mechanism, as well as the experiment of determining the voltage and operating time when the program and read conditions are simulated, where it aims to obtain optimal model. The SONOS divation simulation was carried out on Synopsis technology CAD software.