What is a Bitline?
A wordline is a horizontal strip of polysilicon, a hyper-pure form of silicon, and it connects the to the transistor’s (cell’s) control gate. A bitline is connected to a cell’s drain. Different voltage combinations applied to the wordline and bitline define a read, erase or write (program) operation on the cell.
What is wordline and bitline in flash memory?
Flash array structure Strings are organised in blocks. Each string in the block is connected to a separate bitline, and the control gate of each cell in the string is connected to a wordline. A wordline connects to all cells in the same position in the strings, and defines a page within the block.
What is word line in memory?
The basic building block of a memory chip is a cell, a tiny circuit with a capacitor (which stores data as a charge) and one or more transistors (which activate data). The cells are arranged in a row and have a bit line structure that connects into a memory “address” called a word line.
How does a memory cell work?
The memory cell is an electronic circuit that stores one bit of binary information and it must be set to store a logic 1 (high voltage level) and reset to store a logic 0 (low voltage level). Its value is maintained/stored until it is changed by the set/reset process.
How does a sense amplifier work?
A sense amplifier is part of the read circuitry that is used when data is read from the memory; its role is to sense the low power signals from a bitline that represents a data bit (1 or 0) stored in a memory cell, and amplify the small voltage swing to recognizable logic levels so the data can be interpreted properly …
What is DRAM storage?
Dynamic random access memory (DRAM) is a type of semiconductor memory that is typically used for the data or program code needed by a computer processor to function. RAM is located close to a computer’s processor and enables faster access to data than storage media such as hard disk drives and solid-state drives.
What is the difference between eeprom and flash memory?
Flash uses NAND-type memory, while EEPROM uses NOR type. Flash is block-wise erasable, while EEPROM is byte-wise erasable. Flash is constantly rewritten, while other EEPROMs are seldom rewritten. Flash is used when large amounts are needed, while EEPROM is used when only small amounts are needed.
Which memory depends on voltage?
The memory cell is the fundamental building block of computer memory. The memory cell is an electronic circuit that stores one bit of binary information and it must be set to store a logic 1 (high voltage level) and reset to store a logic 0 (low voltage level).
Do hearts have memories?
The theory of cellular memories states that memories, as well as personality traits, are not only stored in the brain but may also be stored in organs such as the heart. The best way to understand cellular memories is studying cases of organ transplants.
How long do memory cells remain in the body?
Memory cells are incredibly powerful tools for our immune system and can be very long-lived, with studies showing memory B cells for smallpox persisting at least 60 years after vaccination and for Spanish flu at least 90 years after the 1918 pandemic.
How is the bitline used to write a bit cell?
To write a bit cell, the bitline is strongly driven to the desired value. Then the wordline is turned ON, connecting the bitline to the stored bit. The strongly driven bitline overpowers the contents of the bit cell, writing the desired value into the stored bit.
Which is the final state of the bitline?
In other words, if the initial state of C is 1, then the final state of the bitline is a bitwise OR of A and B. Otherwise, if the initial state of C is 0, then the final state of the bitline is a bitwise AND of A and B.
What is the bitline structure of the L2 cache?
The bitline structure of the L2 cache is shown in Figure 6.7. This figure shows the single-ended read implementation of the L2 cache. One out of 32 memory cells is activated by its corresponding wordline. This activated memory cell discharges the precharged bitline, forcing the static NAND to go high.
How is the deviation of the bitline determined?
IDAO simultaneously connects three cells as opposed to a single cell to a sense amplifier. When three cells are connected to the bitline, the deviation of the bitline after charge sharing is determined by the majority value of the three cells.