Nuvoton Technology has released the NuMicro M55M1, a 32-bit microcontroller based on the Arm Cortex-M55 core with integrated neural processing for edge AI applications. The device combines a 220 MHz processor with an Arm Ethos-U55 NPU that delivers 110 GOPS of computing power and a Helium vector processor that provides 15 times the performance of existing Arm DSPs.
The microcontroller includes 1.5 MB of RAM and 2 MB of flash memory with support for external HyperRAM and OctoSPI expansion. The integrated NPU provides 100 times the inference performance of traditional 1 GHz microcontrollers for applications including face recognition, object detection, audio command recognition, and anomaly detection. The NuML Tool Kit enables developers to port AI models using standard microcontroller firmware development methods.
The Cortex-M55 core operates at up to 220 MHz with five low-power modes. Peripherals include CCAP camera interface, DMIC microphone input, I2C, SPI, timer, UART, ADC, and GPIO, all of which function in low-power modes. Communication interfaces consist of Ethernet, USB high-speed OTG with power delivery, USB full-speed OTG, I3C, two CAN-FD ports, two SD card interfaces, and three ISO-7816-3 interfaces.
Analog peripherals include two 12-bit ADCs, two 12-bit 1 Msps DACs, and four analog comparators. Security features include secure boot, Arm TrustZone, a hardware crypto engine, and Arm PSA Certified Level 2 compliance.
Development support includes the NuMaker-X-M55M1D board, NuML Tool Kit, and Nu-Link debugging tool. The platform supports Keil MDK, IAR EWARM, and Eclipse IDE with GNU GCC. The device is available in LQFP64, LQFP128, and LQFP176 packages.
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