Nuvoton Released NuMicro M3351 Microcontroller Series
The new 32-bit line introduces 5V logic support and specialized ADC peripherals for industrial sensing applications.
Updated on Sept. 22, 2026 in Semiconductors
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Nuvoton Technology has launched the NuMicro M3351 series, a collection of 32-bit microcontrollers built on the Arm Cortex-M33 core. This hardware series provides extended operating voltages and integrated signal-processing capabilities for embedded systems.
Why it matters
By supporting input voltages up to 5.5V, these microcontrollers enable direct integration into industrial environments that rely on higher-voltage logic. This compatibility simplifies circuit design in systems that previously required voltage-level shifting components.
The M3351 series features a 144 MHz clock speed and provides 256 KB to 1 MB of Flash memory alongside 128 KB of SRAM. Integrated SAR ADCs—successive approximation register analog-to-digital converters—achieve sampling rates of 1.7 MSPS at 12-bit resolution and 1.0 MSPS at 14-bit resolution.
The players
Nuvoton Technology
A semiconductor developer specializing in microcontroller units, audio ICs, and battery management solutions for industrial and consumer markets.
Arm
A global chip architecture firm that licenses the Cortex-M processor designs used by Nuvoton and other manufacturers.
The details
These microcontrollers utilize an Arm Cortex-M33 core, an architecture optimized for energy efficiency and secure operations in embedded devices. The design incorporates hardware trigger paths that allow peripheral events to be processed without CPU intervention, reducing latency for time-sensitive tasks. It also features a wide operating temperature range of -40°C to +105°C, ensuring stability in demanding thermal conditions.
Timeline
September 22, 2026: Nuvoton Technology released the NuMicro M3351 series.
The Tech Race
The industry is currently consolidating around the Arm Cortex-M33 core for secure and performance-focused embedded applications. Nuvoton's release follows this trend while optimizing for higher voltage thresholds to differentiate from competitors limited to standard 3.3V logic.
Engineers designing industrial sensors and feedback systems can now use a single-chip solution for 5V systems without external level shifters. Availability for the new series has commenced globally, though procurement timelines for individual units depend on regional distributor stock.
The takeaway
This launch marks a shift toward higher-voltage compatibility in ARM-based microcontrollers, simplifying complex industrial hardware stacks. Watch for upcoming developer kit documentation to evaluate how the M3351 integrates with specific I3C and CAN FD communication protocols.
Further reading
For more on the current state of embedded processing architectures, visit Semiconductors.
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Do you believe specialized hardware components like the NuMicro M3351 will simplify your robotics development projects?
