EE 421L:  Digital Integrated Circuit Design Lab - Lab 8

Authors: 

Mario Verduzco, verdum1@unlv.nevada.edu

Gonzalo Arteaga, arteag1@unlv.nevada.edu

Byron Gorsuch, gorsuch@unlv.nevada.edu

 

Due Date:  12/6/2017 

Link to directory: <<chip3_f17 >>

 

Lab 8: Generating a test chip layout for submission to MOSIS for fabrication

 

 

Chip Layout

Chip Schematic

 

 

Pin Diagram

 

Pin<1>

Input to NAND, NOR, inverter

 

 

 

One end of 25k resistor

Pin<40>

Pin<2>

Input to NAND & NOR

Junction between 10k & 25k resistors

Pin<39>

Pin<3>

NAND output

One end of 10k resistor

Pin<38>

Pin<4>

Inverter output

n/a

Pin<37>

Pin<5>

NOR output

n/a

Pin<36>

Pin<6>

NAND VDD

n/a

Pin<35>

Pin<7>

Inverter VDD

Buck converter Vout

Pin<34>

Pin<8>

NOR VDD

Buck converter out

Pin<33>

Pin<9>

NMOS source/drain

Buck converter VDD

Pin<32>

Pin<10>

NMOS gate

Parity checker input P

Pin<31>

Pin<11>

NMOS source/drain

Parity checker input D7

Pin<30>

Pin<12>

PMOS source/drain

Parity checker input D6

Pin<29>

Pin<13>

PMOS gate

Parity checker input D5

Pin<28>

Pin<14>

PMOS source/drain

Parity checker input D4

Pin<27>

Pin<15>

PMOS body

Parity checker input D3

Pin<26>

Pin<16>

n/a

Parity checker input D2

Pin<25>

Pin<17>

n/a

Parity checker input D1

Pin<24>

Pin<18>

Oscillator VDD

Parity checker input D0

Pin<23>

Pin<19>

Oscillator output

Parity checker output

Pin<22>

Pin<20>

Ground (p-substrate)

Parity Checker VDD

Pin<21>

 

 

31-stage Ring Oscillator with buffer

Symbol

How to test

Ring Oscillator Symbol

Ground pin <20>

Connect 5 volt VDD to pin<18>

Measure the output at pin<19>

 

NAND Gate

Symbol

How to test

NAND Symbol

Ground pin <20>

Connect 5 volt VDD to pin<6>

Apply inputs to pin<1> and pin<2>

Measure the output at pin<3>

 

NOR Gate

Symbol

How to test

Ground pin <20>

Connect 5 volt VDD to pin<8>

Apply inputs to pin<1> and pin<2>

Measure the output at pin<5>

 

Inverter

Symbol

How to test

Inverter Symbol

Ground pin <20>

Connect 5 volt VDD to pin<7>

Apply input to pin<1>

Measure the output at pin<4>

 

NMOS

Symbol

How to test

Ground the body at pin <20> (Ground p- sub)

Drain/Source connection at pin<9>

Drain/Source connection at pin<11>

Gate input at pin<10>

 

PMOS

Symbol

How to test

Apply 5 volt VDD to body at pin<12>

Drain/Source connection at pin<12>

Drain/Source connection at pin<14>

Gate input at pin<13>

 

Voltage Divider

Symbol

How to test

Ground pin <38>

Apply input voltage to pin<40>

Measure output voltage at pin<39>

 

25k resistor between pin<40> and pin<39>

10k resistor between pin<39> and pin<38>

 

Even Parity bit checker

Symbol

How to test

Ground pin <20>

Apply 5 volt VDD to pin<21>

Apply inputs D0:7 to pin<23> through pin<30>

Apply input parity bit at pin<31>

Measure the output at pin<22>

 

 

Buck Converter

Symbol

How to test

Ground pin <20>

Apply 5 volt VDD to pin<32>

Place 470uH inductor across pin<33> and pin<34>

Place 4.7uF capacitor from pin<34> to ground (pin<20>)

Place load from pin<34> to ground (pin<20>)

Measure the output voltage at pin<34>

*this is designed for a maximum load current of 100mA

 

Final LVS and DRC

 

 

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