STMicroelectronics STM32G051K6T6

Overview

STM32G051K6T6 from STMicroelectronics is a 32-bit Arm® Cortex®-M0+ microcontroller in UFQFPN32 package, operating up to 64 MHz with 64 KB Flash and 18 KB SRAM. It integrates dual 12-bit DACs, 12-bit ADC (0.4 µs conversion), two USARTs with LIN/IrDA support, and low-power timers - enabling compact, battery-aware industrial sensor nodes and smart metering endpoints.

For engineers reviewing the STM32G051K6T6 datasheet, STM32G051K6T6 pinout, STM32G051K6T6 application, or STM32G051K6T6 equivalent, key selection criteria include its 1.7–3.6 V supply range, -40°C to 125°C extended temperature grade, 5 V-tolerant I/Os, and dual DAC + RTC + LPUART combination for analog control and time-stamped telemetry in space-constrained designs.

Technical Context

The STM32G051K6T6 implements an Arm Cortex-M0+ core with Memory Protection Unit (MPU) and hardware CRC unit, supporting secure boot via securable flash area and readout protection levels. Its clock system combines 4–48 MHz HSE, 32 kHz LSE with calibration, and internal 16 MHz/32 kHz RC oscillators - enabling precise timing across Run, Stop, and Standby modes.

Peripheral interconnect uses dedicated routing matrices: DMA controller supports flexible channel mapping to ADC, DAC, USART, SPI, and timers; two I2C interfaces include Fast-mode Plus (1 Mbit/s) with SMBus/PMBus support and Stop-mode wakeup; one LPUART provides sub-microamp wake-from-standby capability with auto-baud detection.

Key Specifications

Pinout & Package

STM32G051K6T6 is housed in a 32-pin Ultra-Fine Pitch Quad Flat No-lead (UFQFPN32) package with 0.5 mm pitch, exposed thermal pad, and ECOPACK2 compliance. Pin functions are validated per ST's DS13303 Rev 4 Pin Assignment Table (Page 38).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32G051K6T6, STM32G071KBT6 adds USB and RAM at higher cost and power, while STM32F072CBT6 trades modern low-power features for legacy USB compatibility - making the G051 optimal for battery-critical, space-constrained embedded control without USB.

Availability

STM32G051K6T6 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, automotive body electronics, and home appliance UI controllers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for STM32G051K6T6 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, specializing in microcontrollers, power management, and MEMS sensors for industrial, automotive, and consumer markets.

The STM32G0 series targets cost-sensitive, ultra-low-power embedded applications - delivering Cortex-M0+ performance with enhanced analog integration and robust security features for next-generation IoT edge devices.

FAQ

What is the maximum operating frequency and voltage range of the STM32G051K6T6?

The STM32G051K6T6 operates at up to 64 MHz with a supply voltage range of 1.7 V to 3.6 V. Its internal voltage regulator supports dynamic scaling between Run and Low-power Run modes, and the 125°C extended temperature grade ensures stable timing across automotive and industrial thermal profiles.

Does the STM32G051K6T6 support hardware encryption or secure boot features?

Yes - it includes a securable flash area, Readout Protection (ROP) levels (Level 0–2), and hardware CRC acceleration. While it lacks dedicated AES engines, its MPU enforces memory isolation, and the bootloader supports signature verification via external secure element or software-based schemes using internal peripherals.

How many I/O pins are 5 V tolerant, and which packages support them?

Multiple I/Os on the STM32G051K6T6 are 5 V tolerant, including PA0–PA15, PB0–PB15, and PC13–PC15 - confirmed in Section 5.3.14 of DS13303 Rev 4. This applies specifically to the UFQFPN32 package (A0B8 marking), enabling direct interfacing with 5 V logic without level shifters.

Can the STM32G051K6T6 drive an external crystal oscillator for precise RTC operation?

Yes - it supports a 32.768 kHz external crystal oscillator (LSE) with built-in calibration circuitry, achieving ±10 ppm accuracy over -40°C to +85°C. The RTC maintains timekeeping in Standby mode using VBAT, and the LSE can be used as clock source for LPUART or system wakeup events.