 Hi everybody, my name is Mauro Scanduzzo, I'm a Field Application Engineer for ST Microelectronic and I'm working in the sensor area, particular MEMS sensor. What I'm going to show you today, how to measure through our Profi-MEM tool, the MKI-109-V3 and through a graphical user interface that we call Unico, Unico GUI, the power consumption of our device. Our device can be applicable here with an adapter board and directly through the graphical user interface you are able to measure directly the power consumption without using any kind of meter, any kind of external tool. So how we start evaluating the power consumption of our sensor? First of all, you need the graphical user interface that is called Unico. So you type Unico here, if you already have downloaded, don't worry, you can use it or you can always check if there is a new update version of the tool. In particular, I'm working in Windows 10 so I will use the version for Windows. There is also a version for Mac and Linux. So let's press this one, you download the software, so you scroll down, get the software, you accept it, you log in. Once you have logged in, you start in the process of downloading. Once you have downloaded and installed the Unico and also you are sure that the firmware is updated, at this point you can launch Unico from the tool bar here. You just type Unico or if you have a link on your desktop also is fine. So on the left side of Unico you have all the components. So the first thing that we're going to use is an accelerometer stand alone, the LIS-2DW12, to measure the power consumption. The LIS-2DW12 is designed for really extremely low power application. That is the reason why we have the W on the power number for the wearable application. So we're going to select the device type accelerometer. On the right side there is the device name. If we scroll down, so you select the device that is LIS-2DW12, you leave common communication with motherboard enabled, automatic port detection enabled, you select the device, at this point there is automatic recognition of the Wi-Fi, so the device is here, you have the version of firmware, the version of graphical user interface and the sensor that you are working with. So if you start the communication here and you go to the second tab option, you see now then as a default the device is in power down mode. So and let's say now we want to measure the power consumption. So let's press the button advanced feature. On the advanced feature on the bottom part you have the supply voltage and in particular you have the VDD and for the core of the chip and VDDIO then is the supply voltage for the pad frame. So now you are working with 1.8 voltage but you can also change here and put whatever is your voltage cases. So we are measuring a power consumption of about 0.88 microamps. So now let's check together if this measure is consistent with our data sheet. So let's go in the website and type this particular number then it's called LIS-2DW12. This is the device, you press it, you open the data sheet. If you go on the document at the beginning of the document there is the specification and in particular there is also the power consumption section. So let's look how much is the power consumption declared on the data sheet. Current consumption in power down 50 nanoamps. So what we are measuring now is a little bit higher around 88, 0.88 microamps due to some overhead but that is the power consumption that we measure. So obviously we are talking about nanoamps probably with an amperometer will be much better to measure that power consumption but this give you a roughly idea about how much is the power consumption in its power down. Let's move now in an operating way so assuming that I want to work now with 12.5 micro, 12.5 hertz. So let's see how much is the power consumption in typical mode is 1 microamps. Let's see now how much is. So we put here we select low power 12.5 hertz and press again the advanced feature. And now we are measuring a little bit more than one microamps so 1.76 microamps. Let's see on the data sheet how much is the power consumption for example with one hundred hertz. So we are talking about five microamps. So let's move that now with one hundred hertz advanced feature and now we are talking about six microamps. I can always change here also the voltages for example if I work at 3 volts I can set 3 and I can set 3 also on the VDDIO at this point the power consumption is 6.12 microamps. So I can actually sorry is a 7.47 microamps is a little bit higher respect 1.8 voltage. With this tool I can do a pseudo static measure of the power consumption. In any case if I want to have a more accurate power consumption measurement I can always remove this jumper here. One is for VDD and one for the VDDIO I would suggest to use the VDD1 and put in series an amperometer. In this way you can also have a more accurate power consumption measurement. In any case for all the documentation when you download the package here in docs you have the manual of the ProfiMEM tools and you can also look and check the schematic. If you scroll down the document you have the layout and you have also the schematic. Here is the schematic of the board. Now let's move to a different device. Let's move we close the interface here and let's evaluate the power consumption of a different device. Now let's look for the new 6-axis, let's say 6DSOX then is the latest with also machine learning core capability. We change the adapter with a new one, we connect the board, we launch the graphical use interface UNICO, at this point we are working with a 6-axis so the section to look in for is IEMO inertial module, the LSM6DSOX is this one, the power number is STIVA MKI197V1 I select this device, the graphical use interface is going to open, come on port 3 communication, start the communication as a default the device is in power down. So let's at this point measure the we enable the ultra low power accelerometer and we enable the lower auto data rate 1.6 hertz and let's measure together how much is the power consumption. So the power consumption is 4.39 micro amp with 1.8 voltage of supply so let's check how much is the power consumption to declare, 4.4 micro amp with the accelerometer in ultra low power mode so we are matching exactly the condition. Let's see how much is the power consumption at this point with 50 hertz. We change here and we put 50 hertz and we check again the power consumption. We are talking about 9.67 micro amps, let's see how much is here and so we are talking about the same 9.5 micro amps with 50 hertz of power of auto data rate. Let's put now the accelerometer in high performance mode and check. So now we disable that and we put for example 100 hertz and check how much is the power consumption. The power consumption now is 152.93 micro amps, if you look how much is declared an accelerometer current consumption 9 performance mode 170 micro amps. Now let's look if I turn on everything in high performance mode also the gyro. So the power consumption due to the fact that we enable also the gyro will jump up to 0.55 milliamps, let's check it out. So we enable also 100 hertz the gyro, let's measure that and now we are 533.94 micro amps. Now then always you can change the voltages and select the voltages that you want to enable and also you can enable here the kind of different communication that you want to perform to SPI for wire 3 wire or also I2C. Let's leave SPI for wire, let's check again, measure again and now we see then the power consumption increase up to 548 micro amps with 3 voltage configuration. Thank you very much today for watching the video and so if you need any kind of more information please go to our website www.st.com you can find a lot of information a lot of collateral and please enjoy the experience to work with st.com.