 Let's start the first Enzone about the unique ID. The purpose of this Enzone is to check the unique ID of STM32L476HG and the possibility to shrink it. The first step I would say is to open the reference manual and to search the location of the register. So if I open the reference manual. Ok. And if you search in this documentation you will find the chapter about the unique device ID registers. Here you've got the bad address of those registers and detailed about the contents. At this address we will find the X and Y coordinates on the wafer. Then if I scroll down out of state 4 we will have load number and we will have a wafer number. Then load number again. Ok. So I copy all those values here just to remind. So on haunt we got this. I propose we connect the board. Then I will launch Q programmer. And ok my steling is detected. Let's connect. First by default it should show you the flash memory. So we will enter this value to check the unique ID. 1 f f f 7 5 9 0. The size I would say c should be enough but it doesn't matter. So here we've got our unique ID. Just for clarification let's limit the range. Ok. So here we've got at offset 0 X and Y coordinates. Then we will have a load number, wafer number and load number and load number again. So I just sum up for you those information here. As you can see I just copy them directly. So it's exactly the same value. On your side obviously it's a different value. But just to show you how it's organized and the fact that those load numbers are according in ASCII. And it was on those load numbers that we can shrink some bits in the unique ID. So let's see how. In fact I got the information that those load numbers are coded with a value between 0.19 and capital letter A to Z. And also space. So if you convert it in hexadecimal you will find value from 20 hexadecimal to 5A. And if you just check how many components is here it could be coded on 6 bits. So that means you can save 14 bits thanks to these tricks I would say. You can degrade 96 bits to 82 bits for the unique ID. So it could be interesting for you. I hope you like this end zone and now let's switch to the next part.