The appraisal semiconductor's evaluation board has been deeply rooted in the hearts of the people, with a large quantity free gift, is very unwillingly ecological support, very popular with students, engineers, and the wenthouse groups, if you love hardware, like to toss, have a lot Development board, dismantled the current popular electronic products such as smart home sets, wearable equipment products, etc. You must have a microcontroller that is the simple controller of the semiconductor, and does not exaggerate, ST microcontroller Products are basically everywhere in the current electronic hardware products, using English expressions is "everywhere".
The author also started to contact the development board of the STMicroelectronics, from the Discovery Series to the Nucleo series, basically experienced the ease of use of the semiconductor in the development of the ease and ecological success expansion extension + transformation, this ecology The establishment has to be praised. Basically, the semiconductor is a hot chip series or the new MCU will support the corresponding evaluation board, and the ecological perfection makes the semiconductor easily produces a plate of different series of MCUs, and the user Based on the same ecology, it can quickly play each new series of products of the transparent semiconductor. At present, I can see on the ST official website that the Nucleo series development board of STMicroelectronics mainly has three types of Nucleo-32, Nucleo-64, and Nucleo-144, and we can easily understand the entry-level, middle-end, and high-end, regardless of Is the performance or functionality, which has a step-shaped increase, with some MCU series facing different application directions, such as this time we get the Nucleo-F303ze development board, the board belongs to the mainstream series of MCU products, the function is quite In order to enrich, you can use the use of many fields.
The STM32F303 microcontroller on the Nucleo-F303ze development board high-performance ARM Cortex-M4 processor with rich features and built-in 512KB Flash and 80KB SRAM large storage space.
Nucleo-F303ze development board hardware
The Nucleo-F303ze development board uses the ST Nucleo series consistently concise package, but it is clearly made of several important features of the board in the cardboard in the box, such as the ARM Cortex-M4 processor based on the maximum frequency of 72MHz. Integrated 512 KB Flash / 80KB SRAM, compatible with ST ZIO / Arduino UNO expansion interface and supports St Morpho, supports USB FS connection, integrated embedded debugger ST-LINK / V2-1, supports ARM MBED-Enabled project.
User of the ST Nucleo series card may understand that this series of boards are equivalent to a combination of microcontroller's minimum system + onboard repeat, but for beginners or users who contact Nucleo cards for the first time. When the first eye sees the physical object, it may be disappointed. After all, I will see that Nucleo-F303ze board performance and function are very powerful, but the many features of the onboard do not have the corresponding peripherals, and you need yourself To achieve various functions, it is easy to get simple, and it is more difficult to further.
Even so, why is ST still to vigorously expand the Nucleo series of boards? According to the foolishness of the pen, it actually involves an ecological problem. Users who have played the Discovery series cards. The Discovery board basically boards some peripherals, and can verify the microcontroller. Function, it is not a bit not knowing like a Nucleo board, but it is good to have a lot of money. For some users who have played with a single-chip microcomputer, I hope that I have a DiY card peripheral function, while the Discovery series The board part of the board has been occupied, and the user is not allowed to rely, and the Nucleo series of boards is different, depending on the extensive ecotrous circle of Arduino, there are many modules on the Arduino UNO expansion interface, and the price is low. This is like the chip development in the direction of SOC, and our peripheral components are slowly become modular, both standardized, and very convenient, facilitating verification, research and development, diy, so in the long run, Nucleo series The board is clearly with a greater advantage, and the life cycle will be longer.
The structure of the entire board is a combination of microcontrollers minimum system + debugger, and the new, not fully understood microcontrollers, ST-LINK / V2-1, but we are familiar with debuggers, not only within, You can also debug external debugging, convenient and practical, this is required for us to make an additional simulator, not only convenient, but also save a lot of costs.
In addition, we can also see that the external crystal of the microcontroller of the board is only retained a 32.768 kHz RTC crystal, and the high-speed crystal also saves. If you need to use, we can also use the STLINK / V2-1 MCO to come. High speed clock as MCU.
The Arduino UNO interface exists in the ZIO interface, with the reuse pins.
The resources on the Nucleo-F303ze board are probably these things. It can be seen that this board is clearly intended, even with the Ethernet interface, this device has been laid out on the PCB board, but actually take The board is still unpocked, which is no wonder that such a powerful MCU function board, the official offer is less than 19 dollars, what can you still ask?
The entire hardware system block diagram of the Nucleo-F303ze board is shown below.
STM32F303Zet6 microcontroller
To be honest, in addition to the microcontroller itself, the Nucleo-F303ze board really can't find a chat hardware. Of course, this may also be related to the form of the Nucleo series, too famible, do not know It's so awkward, the microcontroller equipped with the board is STM32F303ZET6, which is powered by LQFP144, 20mm * 20mm, is really big enough, than the current mobile phone's SOC, of course, this is also due to packaging relationships.
In addition, the ST series has a STM32F303zet7 model. T7 is mainly at the working temperature of T6, supports a higher range of maximum temperature 105 ° C, of course, the price will also be a few cents.
The features of the STM32F412ZGT6 microcontroller are not explained. Anyway is rich, such as supporting FSMC, supporting 14 timers, supporting a variety of peripheral features, including ADC, DAC, analog comparator, and touch sensing Channel, I2C, USART, SPI, I2S, SDIO, USB2.0 FS, CAN 2.0B, etc. For specific resources for microcontrollers, you can consult the officially provided specification, the following picture is the brief hardware system of the STM32F412ZGT6 microcontroller, which is not difficult to see its rich resources.
Power-on and development environment
The St Nucleo Series card is shipped from the factory with a built-in program, and some small features can be realized. The most common thing is to light the program. After all, this program is very common. If the first time use Nucleo board, it is necessary to install the driver, the most The important one is the driving of the ST-LINK / V2-1 debugger. Installation completion can see the corresponding prompt in device management of the PC.
The Nucleo-F303ze development board runs the default LED program, and can change different LEDs through the onboard blue user button, the actual demo effect is as follows:
At the same time, we can also see the Nucleo-F303ze implemented U disk in my computer in the PC side, which is an important feature of the Nucleo series board to support the ARM Mbed project and implements the program through the U disk.
Open the cloud compiled website in the U disk, we can easily develop the board through the cloud compilation tool.
Select the corresponding development board and then write a program to test it.
Click Compile, and then drag the downloaded .bin file directly to the U disk of the Nucleo-F303ze development board.
The actual operating effect, LD1 is lit.
In addition, you can also directly prepare some of the routine resources for useful semiconductor to facilitate the use of users who started.
In addition, the specific steps can be used by the STM32Cubeide tools that will be stronger to semiconductors, and the specific steps will not be described later. Interested in the evaluation article before the circuit city: it is a horse, pull it out. -NUCLEO-L452RE development board evaluation
summary
Nucleo-F303ze development board, rich features, flexible peripherals, less than 19 dollar prices, supporting ARM Mbed can make quick and easy online compilation, if you cooperate with more powerful STM32Cubeide tools, it is worthy of novice, engineers or Project cost-sensitive companies use, if this Nucleo-F303ze development board or netizens interested in this STM32F303zet6 microcontroller can contact Circuit City to apply for free trials.
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