Nuvoton Launches the M433, a Power-Sipping Microcontroller Built Around the Arm Cortex-M4F

Supporting CAN 2.0B, USB 2.0 Full Speed, and with 41 GPIO pins, the M433 aims to deliver a platform for "Industry 5.0."

Gareth Halfacree
25 days ago β€’ HW101

Semiconductor specialist Nuvoton has announced a new family of microcontrollers, built around the Arm Cortex-M4F core, and a development board designed to bring its features out for ease of use: the NuMaker-M433SE.

"The latest Arm Cortex-M4 M433 CAN/USB FS series is optimized specifically for industrial control, Battery Management Systems (BMS), mini-LED control, and other fields," the company says of its latest chip launch, which it claims represents part of its focus on "Industry 5.0" and the Internet of Things (IoT).

"This product line is designed to be versatile, providing ample room for innovation while highlighting Nuvoton's flexibility in serving high-versatility markets."

The Nuvoton M433 itself, brought to our attention by CNX Software, is built around a single Arm Cortex-M4F core running at up to 144MHz and with an integrated digital signal processor (DSP). There's up to 64kB of static RAM (SRAM), model dependent, and up to 128kB of flash memory with an additional 4kB of bootable LDROM.

The microcontroller offers a nine-channel peripheral direct memory access (PDMA) controller, a 12-bit 16-channel analog to digital converter (ADC) supporting up to 5 mega-samples per second (MSps) with dual analog comparators, up to four UART, two I2C, and two SPI or I2S buses with one quad-SPI (QSPI) bus, plus dual CAN bus 2.0B interfaces. There's USB 2.0 Full Speed On-The-Go, Host, and Device support, and 41 general-purpose input/output (GPIO) pins all of which include interrupt support.

To make it easier to get started with the chip, Nuvoton has announced a companion development board built around the M433SE8AE chip, which brings out all the GPIO pins to a pair of double-stack pin headers while also providing expansion headers compatible with Arduino UNO Shields.

There's an on-board ammeter for power monitoring, integrated debugging and programming capabilities, and two USB Type-C connectors, while the board is supported in Arm's Keil, IAR's Embedded Workbench for Arm (EWARM), and Eclipse via the GNU Compiler Collection (GCC) for software development.

More information on the M433 family is available on the Nuvoton website, while the development board is available to order direct for $25.

Gareth Halfacree
Freelance journalist, technical author, hacker, tinkerer, erstwhile sysadmin. For hire:
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