Nand gate stick diagram layout software

The boolean expression for a logic nand gate is denoted by a single dot or full stop symbol. Nand gate the nand gate will be created with 102 pmos and nmos transistors as seen in the following schematic. Here is my drafted schematic along with its icon of a 2input nand gate using 102 mosfets. It does not show exact placement, transistor sizes, wire lengths, wire widths, tub boundaries. Lab 6 design, layout, and simulation of cmos nandnorxor. Nand page data layout describes the nand driver structure, the data organization in a nand flash device page, and methods to change the data organization. The gate poly we will use a vertical polysilicon rectangle to create the gate of the nmos transistor. In order to draw the layout of this circuit it is necessary to define the direction and metalization of the power supply. Guide to draw stick diagrams in vlsi integrated circuit cmos. Sketch a 4input cmos nor gate complementary cmos complementary cmos logic gates nmos pulldown network pmos pullup network a. Stick diagrams unit ii circuit design processes examples of stick diagrams nor gate and nand using nmos transistors. Get familiar with the cadence virtuoso environment. In this video i am going to create a stick diagram design out from a cmos example. The layout for each gate will use a standard frame, or sframe, to make each gate compact and standardized, allowing for easy ground and power routing.

Figure below shows the schematic, stick diagram and layout of two input nor gate implemented using complementary cmos logic. Define cells by outlines use in a hierarchy to build more complex cells. Layout of lowerlevel cells constrained by higher level. Cmos vlsi design 4th edition 0321547748 9780321547743. Schematic diagram and layout of two input nand gate youtube. Optimized stick diagram layout of the complex cmos logic gate. Figure shows a stick diagram of a 2input nand gate. L2 layout 2input nand gate you must now create the layout for a 2input nand gate. Aug 04, 2015 a basic cmos structure of any 2input logic gate can be drawn as follows.

Figure below shows the schematic, stick diagram and layout of two input nand gate implemented using complementary cmos logic. It consists of a pmos and a nmos connected to get the inverted output. To know mos layers to understand the stick diagrams to learn design rules to understand layout and symbolic diagrams outcome. April 29, 20 204424 digital design automation 55 example. I am the author and i release this to the public domain. Describe the connection between actual layouts and stick diagram. Redraw of stick diagram for a twoinput nand gate with vertical poly line. Stick diagram for a twoinput nand gate110 figure 4. What does layout of nand gate look in finfet technology soi.

Layout also gives the minimum dimensions of different layers, along with the logical connections and main thing about layouts is that can be simulated and checked for errors which cannot be done with only stick diagrams. Sketch a 4input cmos nand gate cmos gate design activity. Answer to figure shows a stick diagram of a 2input nand gate. Figure below shows, the schematic, stick diagram and layout of three input nand gate. Art of layout eulers path and stick diagram part 3 vlsi system.

Use minimumsize transistors assume power supply lines pass through cell from left to right at top and bottom of cell assume inputs are on left side of cell assume output is on right side of cell optimize. Lab6 designing nand, nor, and xor gates for use to design. Mar 07, 2012 transform static cmos logic circuits inverter, nand and nor gate into stick diagrams using colour codes. State two measurement units used in geometry rules. Schematic diagram and layout of two input nand gate. Ppt lecture 4 design rules,layout and stick diagram. Stick diagrams are commonly used to represent the topology not the geometry of cmos integrated circuits.

I work on microelectronics reliability, mainly on soft errors, set characterization and prediction in cmos technologies. Stick diagrams vlsi design aims to translate circuit concepts onto silicon stick diagrams are a means of capturing topography and layer information simple diagrams stick diagrams convey layer information through color codes or monochrome encoding. It may not always be possible to construct a complete euler path both in the pulldown and in the pullup network. The stick diagrams uses sticks or lines to represent the devices and conductors. The logic or boolean expression given for a logic nand gate is that for logical addition, which is the opposite to the and gate, and which it performs on the complements of the inputs. The channel hosts series of lectures to get started with different technologies covering topics like programmable system on chip psoc, arm mbed, arduino, fpga design using vhdl, vlsi design. Topdown and bottomup design approach stick diagrams stick diagrams for nmos 4 38 two inputs nmos nand gate 1 draw the transistor level schematic cmos and stick diagram for the following. Cadence tutorial layout of cmos nand gate duration. Guide to draw stick diagrams in vlsi free download as powerpoint presentation.

Also create a fulladder implemented by 3 nands and 2 xors. What does layout of nand gate look in finfet technology. Conceptdraw diagram is a powerful software for creating professional looking electrical diagram quick and easy. Stickdiagrams digitalcmosdesign electronics tutorial. In that case, the best strategy is to find subeulerpaths in both graphs, which should be as long as possible. Schematic diagram and layout of two input nor gate youtube. Stick diagram for nand gate 82618 11 identifies actual layers, can be annotated with transistor sizes. Stick diagram for a twoinput nand gate 110 figure 4. The jed file is for configuring the home made cpld board. A basic cmos structure of any 2input logic gate can be drawn as follows.

Jun 18, 2015 schematic diagram and layout of two input nand gate. Here is the corresponding layout for the 2input nand gate, and as we can see, there are no errors using the drc, now well errors with erc, and both layout and schematic match using ncc. What does layout of nand gate look in finfet technology soi or bulk. When the input is low, pmos yellow is on and pulls the output to vdd. The circuit output should follow the same pattern as in the truth table for different input combinations. The above drawn circuit is a 2input cmos nand gate. In the virtuoso layout editing window select create rectangle draw a rectangle that is 3.

Layout stick diagram create a layout for a nand gate given constraints. The diagram shown here is the stick diagram for the cmos inverter. Lab6 designing nand, nor, and xor gates for use to. Tool related, uncategorized, vsdopen 2018 conference papers, vsdopen. What is a stick diagram and how is it drawn to represent any. Clock pulse generator schmitt trigger quad twoinput nand gate random number generator ic4033 decade counter decoder7segment led display driver switch controller ic4017 decade counter decoder foul play checker ic4027 dual jk flip flop bc547 npn silicon score counter ic4033 control pulse generator ic4093 schmitt trigger quad twoinput nand gate reset sound. Cadence pspice technology offers more than 33,000 models covering various types of devices that are included in the pspice software. Depending on the context, the term may refer to an ideal logic gate, one that has for instance zero rise time and unlimited fanout, or it may refer to a nonideal physical device pic. Layoutoflogicgates digitalcmosdesign electronics tutorial.

Stick diagram and layout diagram rmd engineering college. A nand gate is made using transistors and junction diodes. At the end of this, will be able draw the stick diagram, layout and symbolic diagram for simple mos circuits introduction unit ii circuit design processes. Schematic and layout of a nand gate in lab 1, our objective is to. Lecture 3layout floorplanning university of texas at austin.

Draw a schematic of a simple nand gate and simulate it. Logic nand gate tutorial with nand gate truth table. The stick diagrams uses sticks or lines to represent the devices and. Feb 19, 2017 stick diagram and representation 21920174 a stick diagram is a stick representation for the layout and represented by simple lines. This video shows the nand gate and then the nor gate implemented on the home made cpld board. Complete stick diagram 43 example stick diagrams 22 44 dynamic latch stick diagram vdd in out vss phi phi 45 stick diagram xor gate examples 46 hierarchical stick diagrams. Figure below shows the schematic, stick diagram and layout of two input nor gate. Draw layout of a nand gate using cell library, then run a design rule check drc, extract. A stick diagram is a kind of diagram which is used to plan the layout of a transistor cell.