STM32H5 vs. STM32H7

Attribute	STM32H5	STM32H7
Core	Cortex-M4	Cortex-M7
Max CPU Frequency	480 MHz	480 MHz
Flash Memory	Up to 2MB	Up to 2MB
SRAM	Up to 1MB	Up to 1MB
Operating Voltage	1.71V to 3.6V	1.7V to 3.6V

Introduction

STM32 microcontrollers are widely used in a variety of embedded applications due to their high performance and low power consumption. Two popular families within the STM32 series are the STM32H5 and STM32H7. In this article, we will compare the attributes of these two microcontrollers to help you decide which one is best suited for your project.

Performance

Both the STM32H5 and STM32H7 microcontrollers are based on the Arm Cortex-M7 core, which provides high performance for demanding applications. However, the STM32H7 offers a higher clock speed of up to 480 MHz compared to the STM32H5's maximum clock speed of 400 MHz. This means that the STM32H7 can handle more complex tasks and process data faster than the STM32H5.

Memory

When it comes to memory, the STM32H7 has an advantage over the STM32H5. The STM32H7 offers up to 2 MB of flash memory and 1 MB of RAM, while the STM32H5 only provides up to 1 MB of flash memory and 512 KB of RAM. This extra memory in the STM32H7 allows for larger programs and data storage, making it more suitable for applications that require extensive memory usage.

Connectivity

Both the STM32H5 and STM32H7 microcontrollers come with a variety of connectivity options, including USB, Ethernet, CAN, and UART interfaces. However, the STM32H7 offers more advanced connectivity features such as a dual-mode USB interface, which supports both host and device modes. This makes the STM32H7 more versatile in terms of connectivity options compared to the STM32H5.

Security

Security is a crucial aspect of embedded systems, especially in applications that handle sensitive data. The STM32H7 microcontroller comes with advanced security features such as hardware cryptographic accelerators, secure boot, and secure firmware update mechanisms. While the STM32H5 also offers some security features, the STM32H7 provides a higher level of security, making it more suitable for applications that require robust security measures.

Power Consumption

Power consumption is a critical factor in embedded applications, especially in battery-powered devices. Both the STM32H5 and STM32H7 microcontrollers are designed to be energy-efficient, with low-power modes to minimize power consumption. However, the STM32H5 has a slight edge in power efficiency compared to the STM32H7, making it a better choice for applications that prioritize low power consumption.

Price

When it comes to cost, the STM32H5 is generally more affordable than the STM32H7. This makes the STM32H5 a more budget-friendly option for projects with cost constraints. However, it is essential to consider the overall requirements of your project and choose a microcontroller that meets your performance, memory, connectivity, security, and power consumption needs, even if it means investing in a slightly more expensive option like the STM32H7.

Conclusion

In conclusion, both the STM32H5 and STM32H7 microcontrollers offer high performance, advanced features, and low power consumption. The STM32H7 has a slight edge in terms of performance, memory, connectivity, and security features, while the STM32H5 is more power-efficient and cost-effective. Ultimately, the choice between the two microcontrollers will depend on the specific requirements of your project and your budget constraints. We hope this comparison has helped you make an informed decision on which microcontroller is best suited for your application.