STMicroelectronics STM32G061G6U6

Overview

STM32G061G6U6 from STMicroelectronics is an Arm® Cortex®-M0+ 32-bit microcontroller with 64 KB Flash, 18 KB SRAM, dual USARTs, 12-bit ADC (0.4 µs conversion), two 12-bit DACs, and AES-128/256 hardware encryption. It operates from 1.7–3.6 V across –40°C to 125°C and targets secure, low-power industrial sensor nodes and smart metering endpoints.

For engineers reviewing the STM32G061G6U6 datasheet, STM32G061G6U6 pinout, STM32G061G6U6 application, or STM32G061G6U6 equivalent, key selection criteria include its 64 MHz CPU frequency, 44 fast I/Os (including 5 V-tolerant pins), integrated RNG and securable flash area, and support for Stop/Standby low-power modes with RTC wakeup.

Technical Context

The STM32G061G6U6 integrates an Arm Cortex-M0+ core with MPU, a 7-channel DMA controller with flexible peripheral mapping, and dual 12-bit DACs with sample-and-hold capability. Its analog subsystem includes a 12-bit ADC (up to 16 external channels, 16-bit oversampling), two rail-to-rail comparators, and internal voltage reference buffer (VREFBUF).

Clock management supports four oscillators: 4–48 MHz HSE, 32 kHz LSE with calibration, 16 MHz HSI with PLL, and 32 kHz LSI (±5%). Communication interfaces include two I²C (Fast-mode Plus), two USARTs (one with ISO7816/LIN/IrDA), one LPUART, and two SPIs (32 Mbit/s) - one multiplexed with I²S.

Key Specifications

Pinout & Package

STM32G061G6U6 is housed in a 28-pin UFQFPN package (4 × 4 mm, 0.5 mm pitch), RoHS-compliant and ECOPACK2 certified. Pin functions are validated per ST's DS13513 Rev 4, Section 4 (Pinouts and Alternate Functions).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32G071GBU6, the G061G6U6 trades USB and memory for lower cost and identical low-power behavior; versus STM32L071KBU6, it delivers 2× CPU throughput, hardware crypto, and superior analog integration at marginally higher active current.

Availability

STM32G061G6U6 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, automotive body electronics, and portable medical diagnostics requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for STM32G061G6U6 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 ICs, sensors, and automotive semiconductors since 1987.

The STM32G0 series targets cost-sensitive, secure, and ultra-low-power applications - emphasizing simplified development, robust security primitives, and seamless migration from legacy 8-bit platforms to 32-bit Arm architecture.

FAQ

What is the maximum operating frequency of the STM32G061G6U6?

The STM32G061G6U6 features an Arm Cortex-M0+ core rated for up to 64 MHz operation. This frequency is achievable using the internal 16 MHz HSI oscillator with PLL multiplication or an external crystal up to 48 MHz. All peripherals-including timers, ADC, and communication interfaces-are fully functional at this speed, with timing specifications validated across the full temperature and voltage range (–40°C to +125°C, 1.7–3.6 V).

Does the STM32G061G6U6 support hardware-based secure boot?

Yes. The STM32G061G6U6 implements secure boot through configurable Readout Protection (RDP) levels and a dedicated securable flash area. When RDP Level 2 is enabled, debug access is permanently disabled and the securable area prevents read-out of critical keys or firmware. Combined with the hardware AES engine and True RNG, it enables authenticated boot and encrypted firmware updates without external security ICs.

How many I/O pins are 5 V tolerant on the STM32G061G6U6?

According to ST's DS13513 Rev 4, Section 5.3.14, 31 I/O pins on the STM32G061G6U6 are explicitly specified as 5 V tolerant (FT_e class). These include PA0–PA15, PB0–PB10, PC13–PC15, and PD0–PD2. Tolerance applies across the full operating voltage range (1.7–3.6 V) and ambient temperature (–40°C to +125°C), enabling direct interfacing with 5 V logic without external level shifters.

What low-power modes does the STM32G061G6U6 support, and what is the lowest current draw?

The STM32G061G6U6 supports Sleep, Stop (0 and 1), Standby, and Shutdown modes. In Shutdown mode-with RTC and backup registers disabled-the typical current draw is 100 nA at 25°C (DS13513 Rev 4, Table 31). With RTC and backup registers active, Shutdown current rises to 300 nA. All low-power modes retain SRAM content in Stop 0/1 and preserve register state, enabling fast wake-up (<5 µs from Stop 0) via EXTI, RTC alarm, or USART activity.