PSEUDO RANDOM NUMBER GENERATOR for Tiny Tapeout

International Hellenic University (IHU) Thessaloniki, Sindos

Mentor: Ioannis Intzes

Students: Spyridon Tsioupros, Eumorfia Sidiroglou, Georgios Vellios

What is a Pseudo Random Number Generator

This circuit is a Pseudo Random Number Generator (PRNG)

A pseudorandom number generator (PRNG), also known as a deterministic random bit generator (DRBG), is an algorithm for generating a sequence of numbers whose properties approximate the properties of sequences of random numbers. The PRNG-generated sequence is not truly random, because it is completely determined by an initial value, called the PRNG's seed (which may include truly random values).

There are also Real Random Number Generator (TRNG)

is a device that generates random numbers from a physical process capable of producing entropy (in other words, the device always has access to a physical entropy source)

Implementation details

-In this project as source of pseudo-randomnes used 2 LFSR's. One that works with 8 bit and one with 16 bit. The circuit don't have input data, just 1 clock and 1 enable pin. The output will be a 7 segment display, so 14 output pins.
-The 16 bit LFSR produce the input of a 16-to-8 multiplexer and the 8 bit LFSR produce the selection bits of 16-to-8 multiplexer.
-The 16-to-8 multiplexer is implemented by 8 2-to-1 multiplexers.
-The final stage is convert the data readable by 2 7 segment displays.

#	Input	Output
0	CLK	Segment0 A
1	EN	Segment0 B
2	RST_N	Segment0 C
3	NONE	Segment0 D
4	NONE	Segment0 E
5	NONE	Segment0 F
6	NONE	Segment0 G
7	NONE	Segment1 A
8	NONE	Segment1 B
9	NONE	Segment1 C
10	NONE	Segment1 D
11	NONE	Segment1 E
12	NONE	Segment1 F
13	NONE	Segment1 G

This is the 2d photo of gds file of chip

Test

Test done in FPGA Cyclone V De1-Soc Board

Idea

The idea for the implementation of this cell came from the paper: Dopingless Transistor Based Hybrid Oscillator Arbiter Physical Unclonable Function

What is Tiny Tapeout?

TinyTapeout is an educational project that aims to make it easier and cheaper than ever to get your digital designs manufactured on a real chip!

Go to https://tinytapeout.com for instructions!

How to change the Wokwi project

Edit the info.yaml and change the wokwi_id to match your project.

How to enable the GitHub actions to build the ASIC files

Please see the instructions for:

How does it work?

When you edit the info.yaml to choose a different ID, the GitHub Action will fetch the digital netlist of your design from Wokwi.

After that, the action uses the open source ASIC tool called OpenLane to build the files needed to fabricate an ASIC.

Resources

What next?

Share your GDS on Twitter, tag it #tinytapeout and link me!

ioannisin / tt_lfsr_test Goto Github PK

tt_lfsr_test's Introduction