Since last year, ST-STDC provides engineers with a lower cost microcontroller assessment platform St Nucleo series development board, its unique support for ARM MBED project development, support cloud development, and compatible Arduino R3 expansion interfaces It once again replaces the discovery series card, and it is not exaggerated that the Nucleo series card has made ST integrated into a more vast ecological circle.
Today, I'm lucky to get another Nucleo series development board - ", I also have a higher performance based on the ARM Cortex-M4 processor, but we have higher performance than the previously evaluated STM32F411, we have a higher performance. a bit.
STM32F446 Nucleo Development Board
If you don't have to say more, a series of cards will be adhered to any manufacturer.
The ST Nucleo Series card provides the engineer with a flexible microcontroller assessment platform, from the STM32F446 Nucleo development board, we can not find a variety of DIY features, whether we can do with performance, function, or power consumption, we can do Effective assessment. The board-mounted compatible Arduino open interface can be convenient to connect to other development platforms, integrated ST-LINK / V2-1 debugger / programmer saves the need for additional external simulators to reduce engineers' development costs.
The hardware design of the STM32F446 Nucleo board is basically the same as the previous Nucleo series card. The main difference is that the microcontroller mounted on the board, as shown in the figure below.
Onboard resources:
STM32F446RET6 microcontroller, based on ARM CORTEX-M4 processor, with DSP, maximum support for 180MHz
Support Arduino Uno R3 Shield Expansion Board, all IO ports of microcontrollers are drawn through the needle holder
ST-LINK / V2-1 debugger, support external microcontroller debugging
3 LEDs: a USB Communication LED, a power LED, a user LED; two mechanical buttons: reset, user
3 different features of the USB interface: virtual serial port, capacity storage, debug interface
3 different power supply methods: Mini USB interface power supply, IO pin power, powered by Arduino Uno R3 Shield interface
Support Keil, IAR, Embed Online Ide design tool
In addition, the IO expansion ports used in the board, such as the IO expansion port of the MCU, and the Arduino extension port, as follows.
MCU's IO extension definition
Arduino extension definition
As everyone saw, STM32F446 Nucleo is equipped with an Arduino expansion interface that is ideal for DIY, so we can buy a variety of expansion modules from the market, DIY, in the MBED official, many support STM32F446 Nucleo expansion The board, the specific list is as follows:
Many of the SEED modules, which can be seen in the ARDUINO open source ecotropic circle, the market share of SEED is huge.
STM32F446RET6 microcontroller
Go back to STM32F446 Nucleo, let's take a look at the microcontroller equipped with the next board.
STM32F446RET6 microcontroller characteristics:
ARM Cortex-M4 processor, up to 180 MHz frequency, 512 KB flash, 128 KB SRAM, 4 KB SRAM backup
General Timer * 10, advanced control timer * 2, basic timer * 2
SPI * 4, I2S * 2, USART * 4, UART * 2, USB OTG full speed and high speed, CAN * 2, SAI * 2
SPDIF-Receive * 1, HDMI-CEC * 1, Four Channel SPI * 1, camera interface, GPIO * 50
3 12-bit ADCs have 16 channels, 12 DACs, with 2 channels
The STM32F446RET6 microcontroller is 1.7 V to 3.6 V, based on ARM Cortex-M4 processor, up to 180MHz frequency, which is not very different from the STM32F7 previously introduced STM32F7. The ST microcontroller is adaptive to the real-time accelerator (ART AcceleratorTM), and STM32F446RET6 is no exception, which supports 0 waiting for execution code from Flash.
The STM32F446RET6 integrates 2 dedicated audio PLLs, SPDIF inputs, 3-channel half-duplex I2S and 2-channel audio interface (SAI), support full-duplex I2S and time division Reuse (TDM) mode, it can be easily applied to applications such as portable speakers, such as portable speakers.
In addition to our LQFP packaged microcontrollers on the board, STM32F446 RET6 also has a BGA package for small to 3.85 x 3.728 mm, allowing engineers to easily apply to existing products.
Development environment
The Nucleo Development Board has been evaluated many times in the previous article of the panel network. For its development environment, everyone should be unfamiliar. Multiple IDEs can be supported, such as common third-party IDE tools IAR, Keil et al, of course, STM32F446 Nucleo can also support online development environments in the MBED project, and specific operations can refer to previous evaluation articles:
From the traditional cloud, subverting the traditional design of the cloud development - a cost-effective STM32F401 Nucleo development board evaluation
One benefit using Mbed cloud development is not to install IDE software, and there are very many templates to get started quickly. You only need to register a development account when you first use it. You can use it for free.
When we first power on the STM32F446 Nucleo development board, we will automatically install the driver in the PC side, and wait for it to complete.
At this time, we can see a U disk named Node_f446re on the computer. After opening, you can see the link of the Mbed project, click Go in and follow the steps step by step, it is very simple.
After the STM32F446 Nucleo board is powered on, we can see the flicker of the user's LED. If the user button can also adjust the frequency of the LED flashing, the guessing the board is built into a program that can adjust the LED duty cycle by the user button.
summary
Introduced the latest STM32F446 Nucleo development board, high-performance STM32F446RET6 microcontroller based on the Cortex-M4 processor, the highest frequency can reach 180MHz, and the other board has the Nucleo series board, the board is compatible. Arduino interface, support ARM Mbed online compiler, convenient U disk download procedure, simple, powerful, affordable, is one of the excellent choices of engineers who want to learn or develop ARM series microcontrollers.
Reference
Nucleo family new member --ST Nucleo-F411RE development board evaluation
From the traditional cloud, subverting the traditional design of the cloud development - a cost-effective STM32F401 Nucleo development board evaluation
Suitable for M0 "cloud" development boards in multi-field --STM32F072 Nucleo review
Original declaration: This article is originally created by the panel network, declined!
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