 Hello and welcome to this STM32L053 Discovery Kit Getting Started video. The STM32L0 is a new range of 32-bit microcontrollers designed for energy-sensitive applications. These MCUs will significantly extend battery life in a wide range of applications, such as consumer, industrial, medical or healthcare. The new STM32L0 Ultra Low Power Series is a novel combination of both ST's Ultra Low Power Process Technology and Power Efficient peripherals. In addition to being Ultra Low Power, the STM32L0 is also a true low-voltage MCU, operating with a supply as low as 1.65 volts and having the industry's smallest variation in power consumption over the 25 to 125 degrees Celsius temperature range, leading to record low consumption levels at elevated temperatures. The STM32L0 series also embeds a built-in ADC and comparators running down to 1.65 volts. The 12-bit ADC features a hardware over-sampling capability up to 16-bit and will consume only 40 microamps at 100,000 samples per second conversion speed. Independent clock domains for I2C, USART and Low Power USART peripherals. The Low Power USART is able to run in Ultra Low Power modes, such as stop mode. The Ultra Low Power 16-bit timer also functions in stop mode. The Low Power timer can be used as a Low Power time counter, asynchronous counter or pulse counter. The Crystal S USB 2.0 full speed solution supports battery charging detection and link power management. This STM32L053 discovery kit is designed to be the quickest way to evaluate the Ultra Low Power microcontrollers of the STM32L0 series and discover the other features, such as USB and touch sensing. Now let's look at the board's main features and components. First of all, flip over the board and look at the bottom side. Here is the STM32L0538 device. You can see that there is no crystal around. And here is an STM32L152 companionship used to measure the power consumption of the STM32L0538 main device in the various power consumption modes. To facilitate the development of applications based on the STM32L053 discovery board, an on-board ST-Link v2-1 debug and programming tool is embedded on the board. A 2.04-inch e-paper display of 172 x 72 pixels is driven by the STM32L0538. To complete the user interface, the board includes user and reset buttons, two LEDs, and one linear touch sensor that could be used as four individual touch keys. To operate the board and access the functionalities of the pre-programmed application, we need to connect jumper CN4 and set jumper JP4 to the on position. Then power on the board by connecting the USB cable to the ST-Link USB connector. The embedded application consumes less than 100 mA current limit, allowed by default by the USB host. Nevertheless, to provide the user with more power for his own development, during the USB enumeration, the ST-Link negotiates with the host to increase the current output capability up to 300 mA. Once this is done, power LED2 is on and no longer blinking. The application will now start up. Let's start exploring the device's various power modes by pressing the right button of the linear sensor. The consumption of the different power modes can be measured using this touch key assignment. Let's now evaluate the run mode. In this application, the device's power consumption in run mode is 3.722 mA. Push the user button to return to the power mode selection menu. Let's now go to the sleep mode. In this mode, the ARM Cortex M0 Plus and the flash are off. The rest of the MCU, like the RAM or analog blocks, remain on. This mode divides the power consumption by 2.5. Real-time applications, such as a sensor hub, will clearly benefit from this mode, its low power consumption, and fast wake-up time. Here, the device power consumption is 1.22 milliamps. Now, we continue to go lower by entering the low power sleep mode. The main differences with the sleep mode are the regulator in low power state and the main clock speed, which is limited to 131 kHz. This mode is ideal for applications requiring a 4-20 mA loop or applications which just need to monitor incoming communication on the communication peripherals and then need to wake up fast. The wake-up-to-run is about 3.5 microseconds. In low power sleep mode, the device power consumption is only 4.2 microamps. For applications such as smoke detectors, gas meters, water meters, or remote control, the stop mode is the perfect fit. This mode offers a tiny power consumption of only 420 nanoamps with the full 8 kilobytes of RAM retained and with a fast wake-up-to-run of only 5 microseconds. For basic time counting, the low power time counter can be activated with only 40 nanoamps of extra power consumption. For more complex and accurate time counting, the stop mode can run the true RTC with calendar. Let's now go back to the main menu using the user button. And here, select the mouse demo. Now, plug a USB cable into the user USB connector and use the touch keys to control your computer pointer. In this presentation, we have explored the basic features of the STM32L0 series MCU. More examples based on this discovery board are available on the STM32CubeL0 software package. For more details about the STM32L0 538 disco and related material, please visit ST.com and search for STM32L0 538 disco. Then click on the related link here. All relative materials can be found in this section, such as data brief, DB 2356, user manuals, UM 1775 and 1790, and application note, AN 4500, all useful both to operate the board and to develop your own application. STM32CubeL0 snippets code examples and discovery board construction files are also available, helping you to speed up your development. And if you want to open your STM32L0 device to a more flexible hardware environment and connectivity, please evaluate our STM32L0 Nucleo. With it, you will be able to take part in the ARM embed community. To learn more about the STM32L0 and get materials related to this device, please visit our website at www.st.com and www.st.com slash STM32L0. Thank you for watching this video.