Lab 8 - MOSIS Fabrication

Digital IC Design - Lab 8 - EE421L

Authors:

Leonardo Ledesma
Jesus Flores-Arellano

Kanoa Hokoana

Emails:

ledesl1@unlv.nevada.edu

florej29@unlv.nevada.edu

hokoana@unlv.nevada.edu

December 5th, 2023

Lab Description

This lab will focus on the layout and submission preperation to MOSIS for device fabrication.

Pre-Laboratory Procedure

Tutorial 6 was completed prior to the start of this lab and all content was reviewed in its entirety.

Laboratory Objectives

Using a 40 pin pad design, the devices listed below should be added being sure to not allow any two devices to share a vdd connection to prevent shorts to ground that would cause all devices to become inoperable.
Global ground can be shared amound devices located on pin 20.

Devices Added to the Chip:
- Buck Switching Power supply from F_23 semester
- 31-stage ring oscillator with buffer circuit to drive a 20pF off-chip load
- 6u/600n NAND and NOR
- 12/6 inverter with minimum length
- 6u/600n PMOS and NMOS with all terminals connected to indivdual pins outside of global grounded NMOS
- 25K N-well resistor and 10K hi-res resistor forming a voltage divider

Pin definitions, associated schematic and device locations should be included along with a concise testing procedure to verfiy proper operation of each device

Laboratory Procedure

Device list with pin locations shown below:

** NOTE: For many logical operations input Pins 12 & 13 are share among devices **

Device	Pin#	Signal	Value
Common GND	20	input	gnd!
NOR Gate	8	Output	A NOR B
	9	Input	vdd
	12	Input	A
	13	Input	B
NAND Gate	10	Output	A NAND B
	11	Input	vdd
	12	Input	A
	13	Input	B
XOR Gate	19	Output	A XOR B
	18	Input	vdd
	12	Input	A
	13	Input	B
12/6 Inverter	6	Output	Ai
	7	Input	vdd
	12	Input	A
NMOS(Bodu grounded to substrate)	21	Output	Drain
	22	Input	Gate
	23	Input	Source
PMOS	14	Input	Body
	15	Input	Source
	16	Input	Gate
	17	Output	Drain
31 Stage + Buffer	34	Input	Enable
	35	Output	Oscillator Ouput
	36	Input	vdd
Voltage Divider	24	Input/Output	25k Input
	25	Input/Output	25/10 Common
	26	Input/Output	10k Input
Buck Switching Power Supply	37	Output	3.125V
	38	Input	Vout
	39	Input	vdd
Unused Pins	24, 27-33	N/A	N/A