STMicroelectronics STM32G031K6T6

Overview

STM32G031K6T6 from STMicroelectronics is a 32-bit Arm® Cortex®-M0+ microcontroller in UFQFPN32 package, operating up to 64 MHz with 64 KB Flash, 8 KB SRAM, and integrated 12-bit ADC (0.4 µs conversion), dual USARTs (one with LIN/ISO7816), and two I²C interfaces supporting Fast-mode Plus (1 Mbit/s). It targets cost-sensitive industrial control and smart sensor nodes requiring low-power operation down to Shutdown mode (200 nA) and RTC backup via VBAT.

For engineers reviewing the STM32G031K6T6 datasheet, STM32G031K6T6 pinout, STM32G031K6T6 application, or STM32G031K6T6 equivalent, key selection criteria include its 64 MHz CPU frequency, 5-channel DMA controller with flexible mapping, 11 timers (including two low-power LPTIMs), 44 fast I/Os with 5 V tolerance, and support for SWD debug interface - all validated for -40°C to 85°C operation.

Technical Context

The STM32G031K6T6 integrates an Arm Cortex-M0+ core with MPU, embedded flash with securable area and hardware parity on SRAM, and a comprehensive clock system featuring 4–48 MHz HSE, 32 kHz LSE with calibration, and ±1% internal 16 MHz RC oscillator with PLL. Its power architecture supports four low-power modes (Sleep, Stop, Standby, Shutdown) with programmable BOR and PVD.

Peripheral interconnect includes dedicated DMA request multiplexer (DMAMUX), NVIC with 32 external interrupts, and advanced analog subsystem comprising 12-bit ADC with hardware oversampling (up to 16-bit), temperature sensor, VREFINT, and VBAT monitoring - all accessible across multiple I/O ports with full alternate function remapping.

Key Specifications

Pinout & Package

STM32G031K6T6 is housed in a 32-pin Ultra-Fine Pitch Quad Flat No-lead (UFQFPN32) package, 5 × 5 mm, 0.5 mm pitch, ECOPACK2-compliant. Pinout validated per STMicroelectronics DS12992 Rev 4, Section 4 (Pinouts, pin description and alternate functions).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with STM32G030K6T6, the G031K6T6 adds securable flash and VREFBUF for enhanced security and analog accuracy; versus STM32F030K6T6, it delivers higher clock speed, richer low-power modes, and modern peripheral set - making it the preferred choice for new designs requiring scalability and future-proofing.

Availability

STM32G031K6T6 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart metering systems, and motor interface modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for STM32G031K6T6 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 devices, sensors, and analog ICs for industrial, automotive, and consumer markets.

The STM32G0 series targets entry-level embedded applications demanding high integration, ultra-low power, and robust security - delivering Cortex-M0+ performance in cost-optimized packages for mass-market IoT and control systems.

FAQ

Does STM32G031K6T6 support USB device functionality?

No, STM32G031K6T6 does not integrate a USB physical layer (PHY). While PA11/PA12 are labeled USB D+/D− in the datasheet, they require an external USB transceiver to implement USB Full-Speed device functionality. The MCU provides only the USB controller logic and clocking infrastructure.

What is the maximum operating frequency of the ADC clock?

The ADC clock (ADCCLK) is derived from APB1 and must not exceed 16 MHz per DS12992 Rev 4 Section 5.3.18. At 16 MHz, the 12-bit conversion time remains 0.4 µs (16 ADCCLK cycles), enabling up to 2.5 MSPS sampling rate with no oversampling.

Can the internal 32 kHz RC oscillator be used for RTC calibration?

Yes - the internal 32 kHz RC oscillator (LSI) can drive the RTC in absence of an external 32.768 kHz crystal. However, its ±5% accuracy limits timekeeping precision; for sub-second accuracy, the calibrated 32 kHz crystal oscillator (LSE) with built-in trimming is required.

Is the STM32G031K6T6 pin-compatible with other STM32G031 variants?

Yes, within the same package variant: STM32G031K6T6 (UFQFPN32) shares identical pinout with STM32G031K4T6 and STM32G031K8T6. Differences lie solely in Flash size (32/64/128 KB) and feature enablement - allowing hardware reuse across product tiers.