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Types of Flash Memory

Block Erasure
Block Erasure

An erase operation on a flash chip clears the data from all pages in the block, so if some of the other pages contain active data (stuff you want to keep) you either have to copy it elsewhere first or hold off from doing the erase.

source: flashdba.com
Floating-Gate Transistor
Floating-Gate Transistor

Floating Gate Transistors Floating Gate MOSFET (FGMOS) The diagram on the right (labelled “FGMOS”) is of a Floating Gate MOSFET, which is essentially what you will find in a flash memory cell.

source: flashdba.com
Internal Charge Pumps
Internal Charge Pumps

Fig. 1. Block diagram of a NAND flash memory. voltages for programming or erasing on chip. switch cir-cuits switch these high voltages into memory cell array via row decoder. Focusing on internal high-voltage ( ) switching and generation for low-voltageNAND flash memories, this paper de-scribes a switch, row decoder, and charge-pump circuit.

source: engr.uky.edu
Memory Wear
Memory Wear

Flash memory is made of a unique arrangement of logic gates set up in a feedback loop, and these logic gates are made of transistors. The transistors are fabricated all together on one piece of silicon foundation, with layers of etching and additi...

source: quora.com
NOR Flash
NOR Flash

SPI NOR flash, also called serial NOR flash, has become the standard because it is a much smaller form factor with fewer connector pins, but it retains the same memory density and speed as parallel NOR flash memory.

The Fowler-Nordheim Tunneling Effect
The Fowler-Nordheim Tunneling Effect

Erasing Flash Memory . Fowler-Nordheim tunneling ... Due to the quantum effect of barrier penetration ... 6.007 Lecture 43: Tunneling applications (flash memory, STM)

source: ocw.mit.edu
Vertical NAND
Vertical NAND

The vertical collection is electrically identical to the serial-linked groups in which conventional NAND flash memory is configured. Construction. Growth of a group of V-NAND cells begins with an alternating stack of conducting (doped) polysilicon layers and insulating silicon dioxide layers.

image: edn.com