Chinese electronics firm ARTERY Technology has launched a new family of high performance microcontrollers designed for industrial IoT. The AT32F455/F456/F457 series features high clock speeds, large memory capacity, and peripheral interfaces such as multiple CAN-FD modules. They are designed to support industrial automation, intelligent connectivity (AIoT), and data processing.

The AT32F455/F456/F457 series is based on the 32-bit ARM Cortex-M4F core, running at up to 192MHz to ensure efficient processing in complex applications. It integrates high-speed embedded memory with up to 512KB Flash and up to 144KB SRAM, and provides 4KB OTP for storing unique IDs, production batch information, and hardware configuration data—ensuring data reliability and security to meet the storage needs of diverse applications.

The series supports high-capacity memory expansion with a QSPI interface for connecting external SPI flash or SPI RAM, supporting address mapping mode. The XMC interface supports memory expansion with SDRAM, SRAM, PSRAM, and NOR Flash.

The AT32F455/F456/F457 series integrates rich peripheral resources and enhanced I/O ports, including two 12-bit, 16-channel high-speed ADCs with up to 5.33Msps sampling rate, two 12-bit DACs, eight general-purpose 16-bit timers, two general-purpose 32-bit timers, and two basic timers. It also includes 3 I2C, 4 SPI/I2S (2 full-duplex), 1 full-duplex I2SF, 8 USART, SDIO, USB OTG, XMC, and QSPI interfaces—fully meeting users’ customised development needs and offering broad application scalability. Equipped with 3 CAN or CAN-FD interfaces and an Ethernet MAC interface, the series ensures strong connectivity in high-speed data transmission, industrial automation, and IoT applications.

The AT32F455 supports three CAN interfaces, while the AT32F456 and AT32F457 integrate three CAN-FD interfaces to enable lower latency and higher data throughput, ideal for complex scenarios requiring large data exchange. On top of the AT32F455/F456 features, the AT32F457 adds an IEEE-802.3 10/100Mbps Ethernet controller to enable precise industrial network connectivity, supporting distributed systems and remote device management—particularly suitable for IoT applications.

The AT32F455/F456/F457 series enhances security design by integrating ARTERY’s proprietary SLib Security Library, along with a built-in AES (Advanced Encryption Standard) hardware accelerator and a True Random Number Generator (TRNG) to protect code and data security. The AES hardware encryption effectively safeguards firmware and data transmission, while the TRNG generates high-quality keys and encryption parameters to further strengthen the system’s resistance against attacks—delivering a higher level of protection for industrial control, smart security, and connected devices.

All AT32 MCUs support industrial-grade temperature ranges from -40°C to 105°C and comply with IEC-60730 international safety standards, ensuring stable operation in harsh environments and enhancing safety risk management in home appliances. Its low-power architecture combined with various power-saving modes—including sleep, deep sleep, and standby—delivers excellent performance in industrial automation, IoT endpoints, and portable devices.