Nuvoton launches M433 Series ultra-low power Arm Cortex-M4F MCUs, NuMaker-M433SE development board

Nuvoton has recently announced their M433 Series MCUs (M433LE8AE and M433SE8AE) along with the NuMaker-M433SE development board. Nuvoton is calling this the “M433 CAN/USB FS OTG” Series, featuring an Arm Cortex-M4F core with DSP and FPU extensions. The MCU is clocked at 144 MHz and consumes 350 nA in deep power-down mode, making it ideal for battery-operated IoT, industrial, and consumer applications.

This is not the first Nuvoton MCU we have written about. In recent months, we have seen Nuvoton release the NuMicro M091 Series, the Nuvoton MA35H0 – a cost-optimized MPU, and other dev boards and MCUs. Feel free to check those out if you are interested in the topic.

Nuvoton NuMaker M433SE development board

Nuvoton M433 Series MCUs specifications:

  • MCU core
    • 144 MHz Arm Cortex-M4F
    • Includes DSP and FPU instructions
    • Memory Protection Unit (MPU) with 8 regions
  • Memory
    • Up to 128 KB Flash
    • 4 KB LDROM
    • Up to 64 KB SRAM with parity check
  • PDMA
    • 9-channel PDMA
    • Supports various triggers
  • Clocks
    • 4 to 24 MHz crystal oscillator
    • 32.768 kHz crystal for RTC
    • Internal oscillators: 48 MHz, 12 MHz, 10 kHz
    • PLL up to 200 MHz
  • Power Management
    • Active mode: 132 μA/MHz
    • NPD: 230 μA
    • SPD w/o RAM retention: 1.5 μA
    • DPD: 0.35 μA
    • Wake-up support from NPD mode
  • Timer & PWM
    • Four 32-bit timers
    • Enhanced and Basic PWM options
    • SysTick, watchdog, and window watchdog timers
    • EQEI and enhanced input capture timer/counter
  • Analog
    • 12-bit, 16-ch, 5 Msps SAR ADC
    • Dual analog comparators
  • Communication Interfaces
    • Up to 4 x UARTs with IrDA, LIN support
    • Up to 2 x I²C interfaces with SMBus/PMBus
    • Up to 2 x SPI/I²S, 1 Quad-SPI
    • Dual CAN 2.0B interfaces
  • USB – USB 2.0 FS OTG/Host/Device with PHY
  • I/O – 41 I/O pins with interrupt capability
  • Operating Characteristics
    • Voltage: 1.8V to 3.6V
    • Temperature: -40°C to 105°C
  • Development Support
    • Arm Keil RVMDK, IAR EWARM, GNU compiler with Eclipse
    • ICP and ISP programming
    • Pin Viewer and PinConfigure tool
  • Identification – 96-bit UID 128-bit UCID
  • Packaging – LQFP48 with 41 I/O pins, 0.5 mm pitch, 7x7x1.4 mm dimensions
Nuvoton M433 CAN USB FS Series M433LE8AE.png 562826683
Block Diagram of M433LE8AE MCU

NuMaker-M433SE development board specifications:

  • Main Microcontroller – NuMicro M433SE8AE, backward compatible with M433LE8AE.
  • Connectivity – Full pin extension connectors; Arduino UNO compatible connectors.
  • Power Measurement – Ammeter connector for microcontroller power consumption analysis.
  • Power Supply Options
    • External VDD connector.
    • Vin via Arduino UNO compatible connector.
    • USB FS connector on the M433 platform.
    • The ICE USB connector on Nu-Link2-Me.
  • On-board Debugger/Programmer – Nu-Link2-Me with
    • SWD interface debugging.
    • Support for both online and offline programming.
    • Virtual COM port functionality.

The microcontroller can be programmed with the Nuvoton Nu-Link debugger using either Keil or IAR development environments, and the company also provides a Pin Viewer and PinConfigure tool for this MCu.

NuMaker M433SE 1
NuMaker-M433SE development board

Nuvoton offers the NuMaker-M433SE development board, equipped with the Nu-Link-Me programmer, for an easy start with the MCU. It also features an Arduino UNO-compatible pin layout along with an ammeter for monitoring power consumption. Additionally, the Nu-Link2-Me acts as both a debugger and programmer, supporting online programming and debugging through the SWD interface. It includes a virtual COM port function for sending messages to a PC and can be detached for mass production use.

For more details on the product, feel free to check out their press release and product page. The company supports third-party IDEs like Keil MDK, IAR EWARM, and Eclipse IDE with GNU GCC compilers. Additionally, they provide code examples, libraries, datasheets, and more on their GitHub page.

At the time of writing, I only found that the M433LE8AE IC is available for $1.28 on Techdesign Store and the NuMaker-M433SE development board is available for $25.00 on the Nuvoton website.

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