STMicroelectronics NUCLEO-C031C6

Overview

NUCLEO-C031C6 from STMicroelectronics is an STM32 Nucleo-64 development board built around the STM32C031C6T6 32-bit Arm® Cortex®-M0+ microcontroller in LQFP48 package, featuring 32 KB Flash, 12 KB SRAM, 48 MHz HSE oscillator, and integrated ST-LINK/V2-1 debugger/programmer via USB Micro-B connector. It supports Arduino Uno V3 expansion and ST morpho headers for full I/O access, targeting rapid prototyping of low-power industrial control and sensor interface applications.

For engineers reviewing the NUCLEO-C031C6 datasheet, NUCLEO-C031C6 pinout, NUCLEO-C031C6 application, or NUCLEO-C031C6 equivalent, this board delivers verified out-of-box support for STM32CubeIDE, IAR Embedded Workbench®, and Keil MDK-ARM toolchains with preloaded demonstration firmware, comprehensive HAL/LL drivers, and hardware-level power optimization features including 32.768 kHz RTC crystal and flexible VBUS/external power sourcing.

Technical Context

The NUCLEO-C031C6 implements a fixed-function evaluation platform-not a configurable IC-centered on the STM32C031C6T6 MCU with its Arm Cortex-M0+ core, 48 MHz max CPU frequency, and integrated peripherals including USART, SPI, I²C, 12-bit ADC, and 16-bit timers. Its architecture prioritizes low-cost entry into the STM32 C-line ecosystem with minimal external components required for basic operation.

Board-level design integrates ST-LINK/V2-1 as a dedicated debug interface with mass storage, virtual COM port, and SWD capabilities-all accessible through a single USB Micro-B connection. Power delivery is simplified via dual-source flexibility (ST-LINK VBUS or external 5 V/3.3 V), and clocking relies on both internal RC oscillators and the discrete 32.768 kHz crystal for precise RTC timing.

Key Specifications

Availability

NUCLEO-C031C6 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart metering interfaces, and low-power motor control prototypes requiring stable component supply, consistent firmware toolchain integration, and long-term evaluation board availability.

Supply support for NUCLEO-C031C6 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, sensors, and analog devices for automotive, industrial, and consumer markets.

The STM32 Nucleo series was developed to lower barriers to entry for Arm-based embedded development, delivering standardized, open-hardware evaluation platforms with unified software ecosystems across the STM32 portfolio.

FAQ

Does the NUCLEO-C031C6 support USB device functionality?

No-the NUCLEO-C031C6 does not expose USB device capability from the target STM32C031C6T6. Its USB Micro-B connector serves exclusively for the on-board ST-LINK/V2-1 debugger/programmer. The target MCU lacks a USB peripheral; only boards marked with "USB Device" or "USB SNK/UFP" (e.g., NUCLEO-C071RB or NUCLEO-C542RC) provide user-accessible USB functionality.

What IDEs are officially supported for firmware development on this board?

STMicroelectronics officially supports STM32CubeIDE (free, cross-platform), IAR Embedded Workbench® for Arm (Windows-only, commercial license), and Keil MDK-ARM (Windows-only, free version for Cortex-M0+/M3/M4 cores). All three integrate directly with the ST-LINK/V2-1 interface and recognize the NUCLEO-C031C6's target MCU out of the box.

Can the NUCLEO-C031C6 be powered solely by the ST-LINK USB connection?

Yes-the board can be powered entirely via the ST-LINK USB Micro-B connection (VBUS), eliminating need for external power during development and debugging. It also accepts external 5 V or 3.3 V supply through the VIN or E5V pins, enabling standalone operation or power-constrained testing scenarios.

Is the STM32C031C6T6 on this board pin-compatible with other Nucleo-64 boards?

No-the STM32C031C6T6 uses an LQFP48 package, while most other Nucleo-64 boards host LQFP64 MCUs (e.g., STM32C071RBT6, STM32G431RBT6). Physical pin count and layout differ; Arduino and morpho headers maintain consistent signal mapping per function, but direct MCU substitution is not mechanically or electrically feasible.