What is the bit line?
bitline (plural bitlines) (electronics) An array of columns of memory cells in random access memory, used with the wordline to generate the address of each cell.
How can we estimate the bit line capacitance of 6T SRAM cell?
The bit line capacitance can be first estimated by making the lay out of memory cell array. It is determined by how many cells can be connected to this line which conveys the memory cell signal to the sense amplifier.
What is a bit line in memory?
Bit Cells. Memory arrays are built as an array of bit cells, each of which stores 1 bit of data. Figure 5.43 shows that each bit cell is connected to a wordline and a bitline. For each combination of address bits, the memory asserts a single wordline that activates the bit cells in that row.
What is bit line and word line?
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 bit line and word line in a DRAM?
A Word Line provides the current to select which row of bits is to be read or written. The Bit Line either reads the bit on that Word Line or it allows a current applied to the Bit Line to program the bit. A bit can either be in a high-resistance or in a low-resistance state.
What is precharge in SRAM?
A precharge system of the divided bit line types for a SRAM (Static Random Access Memory) reduces the active current consumption and bit line peak current by decreasing the number of bit lines to be precharged at any one time during a precharge cycle.
What is bit cell in SRAM?
SRAM arrays are arranged in several rows and columns of storage bit-cells called bit-lines (BL and BL’) and word-lines (WL) to control data access and storage. The bit-cells are bi-stable flip-flops which can consist of 4 to 11 transistors with pull-up (PU), pull-down (PD), and pass-gate (PG) networks.
What is SNM of SRAM?
STATIC NOISE MARGIN (SNM) SNM is the measure of stability of the SRAM cell to hold its data against noise. SNM of SRAM is defined as minimum amount of noise voltage present on the storing nodes of SRAM required to flip the state of cell.
What is NAND and DRAM?
DRAM and NAND are the high-volume, commodity memory semi-components, working together in a system (such as PC, server, smartphone), but for different reasons. – DRAM manages your data, requires power (volatile) – NAND stores your data, does not require power (non-volatile) • Memory is in just about all electronics.
Why is precharge needed?
A precharge circuit is used to limit this inrush current to slowly charge the downstream capacitance. It plays a critical role in the proper operation and protection of components in high voltage applications. Precharging increases the lifespan of electric components and the reliability of the system as a whole.