STM32H722 vs. STM32H743

Attribute	STM32H722	STM32H743
Core	Cortex-M7	Cortex-M7
Max CPU Frequency	550 MHz	480 MHz
Flash Memory	512 KB	2 MB
SRAM	256 KB	1 MB
GPIO	114	144
Timers	14	17

Introduction

When it comes to choosing a microcontroller for your embedded system design, STM32 microcontrollers from STMicroelectronics are a popular choice due to their performance, features, and scalability. In this article, we will compare two popular STM32 microcontrollers, the STM32H722 and STM32H743, to help you decide which one is the best fit for your project.

Performance

The STM32H722 is based on the Arm Cortex-M7 core running at up to 550 MHz, while the STM32H743 is based on the Arm Cortex-M7 core running at up to 480 MHz. This means that the STM32H722 has a slight edge in terms of raw processing power. However, both microcontrollers offer excellent performance for a wide range of applications, including industrial automation, consumer electronics, and IoT devices.

Memory

When it comes to memory, the STM32H743 offers more options compared to the STM32H722. The STM32H743 comes with up to 2MB of Flash memory and up to 1MB of RAM, while the STM32H722 offers up to 1MB of Flash memory and up to 512KB of RAM. If your application requires more memory for storing code and data, the STM32H743 might be the better choice.

Peripherals

Both the STM32H722 and STM32H743 come with a rich set of peripherals, including multiple UART, SPI, I2C, and CAN interfaces, as well as timers, ADCs, DACs, and more. However, the STM32H743 offers a few additional features compared to the STM32H722, such as a USB OTG controller, an LCD-TFT controller, and a cryptographic accelerator. If your application requires these specific peripherals, the STM32H743 would be the better choice.

Security

Security is a critical consideration for many embedded system designs, especially for applications that handle sensitive data or require secure communication. Both the STM32H722 and STM32H743 come with hardware-based security features, such as a True Random Number Generator (TRNG), a hardware cryptographic accelerator, and secure boot capabilities. These features help protect your system from various security threats and vulnerabilities.

Development Tools

STMicroelectronics provides a comprehensive set of development tools and software libraries for both the STM32H722 and STM32H743 microcontrollers. This includes the STM32CubeMX graphical configuration tool, the STM32CubeIDE integrated development environment, and a wide range of software libraries and examples. Whether you are a beginner or an experienced embedded developer, these tools make it easy to get started with your project and accelerate your development process.

Conclusion

In conclusion, both the STM32H722 and STM32H743 are powerful and feature-rich microcontrollers that offer excellent performance, memory options, peripherals, security features, and development tools. The choice between the two will ultimately depend on your specific project requirements, such as performance needs, memory constraints, required peripherals, and security considerations. Whichever microcontroller you choose, you can be confident that you are getting a reliable and versatile solution for your embedded system design.