A microcontroller offers IoT security, firmware updates, and low-power operation. Could this be the key to safer smart devices? Find out more!
Nuvoton Technology launches the NuMicro M2354 microcontroller, designed to strengthen IoT security for applications such as server Root of Trust (RoT), smart city systems, IoT devices, and smart metering. The M2354 is an Arm TrustZone MCU based on the Armv8-M architecture and powered by the Arm Cortex-M23 CPU, for long-term protection of data.
The target users of the M2354 include system designers, IoT developers, smart meter manufacturers, and server motherboard engineers who require security, low power consumption, and reliable operation in critical applications. It is suited for those developing connected devices that handle information and require firmware security.
The microcontroller supports firmware updates (FOTA) with dual-bank Flash memory up to 1024 KB and 256 KB SRAM. It features eXecute-Only-Memory (XOM) to prevent code theft and a cryptographic hardware accelerator supporting FIPS PUB 197/180/180-2/180-4 and NIST SP 800-38A. A hardware key store protects against side-channel and fault injection attacks, while its secure boot mechanism—based on DICE and ECDSA P-521—generates a device identity and verifies firmware, preventing rollback or tampering. The M2354 is certified to PSA Level 3 and SESIP Level 3 standards, meeting EU Cyber Resilience Act (CRA) requirements.
The M2354 delivers performance with low power consumption. It runs at up to 96 MHz, operates over a voltage range of 1.7V–3.6V, and withstands temperatures from -40°C to +105°C. Power efficiency is achieved with 89.3 μA/MHz in LDO mode and 39.6 μA/MHz in DC-DC mode, with Standby Power-down under 2 µA and Deep Power-down without V BAT below 0.1 µA.
The MCU supports a range of peripherals and analog components, including CAN, USB 2.0 full-speed OTG, PWM, UART, SPI/I2S, Quad-SPI, I²C, RTC, comparators, ADC, and DAC. Package options include LQFP-48, LQFP-64, LQFP-128, and WLCSP49. With support for SPDM secure communication protocol, the M2354 is suited for Root of Trust applications on server motherboards and daughterboards.
