What does FF ss sf fs TT process corners represent?

What does FF ss sf fs TT process corners represent?

corners tt ff ss as montage said, they stand for typical, slow, and fast. since the transistors vary from lot to lot, we use these process corners to check the effects of process variation on our circuit. if you ask me, the main contributor is tox, which makes both transistor either slow or fast.

What is SS FF SF FS in VLSI?

graph, but called a corner, anyway), fast-fast (FF), slow-slow (SS), fast-slow (FS), and slow-fast (SF). The first three corners (TT, FF, SS) are called even corners, because both types of devices are affected evenly, and generally do not adversely affect the logical correctness of the circuit.

What is FF in semiconductor?

Because there are two types of transistors in a CMOS process, the NMOS and PMOS transistors, foundries provide the values that form the four different corners and the center of a “SPICE Box” – denoted as fast-fast (FF), slow-slow (SS), fast-slow (FS), slow-fast (SF) and typical-typical (TT).

What are different process corners?

There are therefore five possible corners: typical-typical (TT) (not really a corner of an n vs. p mobility graph, but called a corner, anyway), fast-fast (FF), slow-slow (SS), fast-slow (FS), and slow-fast (SF).

What is PVT corner?

PVT is abbreviation for Process, Voltage and Temperature. In order to make our chip to work in all possible conditions, like it should work in Siachen Glacier at -40°C and also in Sahara Desert at 60°C, we simulate it at different corners of process, voltage and temperature which IC may face after fabrication.

What is corner analysis?

Corners Analysis is performed to simulate your circuit’s performance against a set of parameters belonging to extreme manufacturing variations. You may find the attached document useful for Corners Analysis.

What is PVT variation?

Variability into design comes due to process, voltage and temperature (PVT) variation is a naturally occurring phenomenon during the fabrication of an integrated circuit (IC) that deviates of transistor electrical characteristics from the expected value.

What is POCV in VLSI?

POCV stands for Parametric On-Chip Variation. POCV was proposed to address shortcomings of AOCV/SBOCV for granularity, accuracy, Common path pessimism removal and half cycle paths. POCV eliminates the need for stages, path type and corner delay to find delay derate during characterization phase.

What is Monte Carlo simulation in cadence?

Monte Carlo analysis is based on statistical distributions. It realistically simulates mismatching and process variation. On each simulation run, it calculates every parameter randomly according to a statistical distribution model.