⌘K

Contents

MOS Fundamentals

MOS Capacitor Structure Threshold Voltage NMOS/PMOS I-V Channel Length Modulation Subthreshold Conduction MOS Capacitances Velocity Saturation Hot Carrier Effect

CMOS Logic

CMOS Inverter CMOS NAND/NOR Complex Gates Pass Transistor Logic Transmission Gates Tri-State Buffers Elmore Delay Logical Effort

CMOS Circuits

CMOS Adders Carry Skip/Select CMOS Multipliers Booth Multiplier Transmission Gate Logic Barrel Shifter Domino Logic Circuits Level Shifters IO Pads

Sequential VLSI

Bistability Principle SR Latch D Latch D Flip-Flop JK Flip-Flop CMOS Setup and Hold Time Clock Skew and Jitter Synchronizers

Memory Design

SRAM 6T Cell SRAM Array Org DRAM 1T Cell DRAM Refresh Sense Amplifiers ROM/PROM Design Flash Memory Cell

Design Flow

VLSI Design Flow Design Entry Lambda Rules Layout Basics DRC LVS Parasitic Extraction

Low Power Design

Power Components Dynamic Power Reduction Leakage Power Reduction Power Gating DVFS

Other Topics

FinFET Technology SOI Technology Design for Testability Fault Models FPGA Architecture Elements

Other Subjects

Analog Electronics Digital Electronics Signals & Systems Control Systems Electromagnetic Theory Digital Communication Analog Communication Network Analysis Microprocessors Verilog HDL Power Electronics Embedded Systems DSP Electronic Devices

Section Progress67%

4 of 6 articles

Layout Basics

Active, poly, metal layers, contacts.

Updated: 19 March 2026

5 min read

Layout Basics Quiz

Test your technical knowledge on this topic.

Question 1 of 3

Q1.In a standard P-substrate CMOS layout, what is the required function of the N-well?

Related Articles

VLSI Design Flow

Y-Chart, specification to layout steps.

4 min read

Design Entry

Schematic vs HDL.

11 min read

Parasitic Extraction

R and C extraction for post-layout sim.

10 min read

ROM/PROM Design

Nor-based and Nand-based ROMs.

9 min read

SRAM 6T Cell

Read stability, write ability.

5 min read