STMicroelectronics STM32G071CBU7TR

Overview

STM32G071CBU7TR from STMicroelectronics is a 32-bit Arm® Cortex®-M0+ microcontroller with 128 KB Flash, 36 KB SRAM, and integrated USB Type-C Power Delivery controller. It operates from 1.7–3.6 V, supports -40°C to 125°C extended temperature range, and delivers up to 64 MHz CPU frequency. It targets embedded control in smart power adapters, industrial sensors, and battery-powered IoT edge nodes requiring secure firmware execution and low-power RTC wake-up.

For engineers reviewing the STM32G071CBU7TR datasheet, STM32G071CBU7TR pinout, STM32G071CBU7TR application, or STM32G071CBU7TR equivalent, key selection criteria include its dual 12-bit DACs with sample-and-hold, 14-timer suite (including two 128 MHz-capable advanced timers), 12-bit 0.4 µs ADC with hardware oversampling, and native USB Type-C PD controller for source/sink negotiation - all in a compact UFQFPN48 package.

Technical Context

The STM32G071CBU7TR integrates an Arm Cortex-M0+ core with Memory Protection Unit (MPU) for real-time task isolation and secure code partitioning. Its clock system combines four oscillators - 4–48 MHz HSE, 32 kHz LSE with calibration, 16 MHz HSI (±1%), and 32 kHz LSI (±5%) - enabling precise timing across active and ultra-low-power modes.

Peripheral interconnect uses a flexible AHB/APB matrix supporting concurrent DMA transfers across 7-channel DMA controller with DMAMUX routing. Analog subsystem includes two rail-to-rail comparators with programmable hysteresis, temperature sensor, VREFINT, and VBAT monitoring - all directly accessible via dedicated ADC channels without software overhead.

Key Specifications

Pinout & Package

STM32G071CBU7TR is housed in a 48-pin Ultra-Fine Pitch Quad Flat No-lead (UFQFPN48) package with 0.5 mm pitch, 7 × 7 mm body, and exposed thermal pad. Pin layout supports full GPIO remapping, 5 V-tolerant I/Os on selected pins, and dedicated debug (SWDIO/SWCLK) and reset (NRST) terminals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32G071CBT6, the CBU7TR offers superior thermal performance and smaller footprint in volume production; versus STM32G081CBU7, it trades crypto acceleration for lower unit cost where security requirements are met by software-only implementations.

Availability

STM32G071CBU7TR is available at Aetrix Electronics and suitable for smart power adapters, industrial sensor nodes, motor control modules, and medical wearables requiring stable component supply across multi-year production cycles.

Supply support for STM32G071CBU7TR 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 components for industrial, automotive, and consumer markets.

The STM32G0 series targets cost-sensitive, power-constrained embedded applications demanding high integration, robust security primitives, and seamless toolchain compatibility - bridging entry-level Cortex-M0+ performance with mainstream ecosystem support.

FAQ

What is the maximum operating frequency and corresponding supply voltage range?

The STM32G071CBU7TR achieves a maximum CPU frequency of 64 MHz across its full 1.7–3.6 V operating voltage range. At 1.7 V, the maximum guaranteed frequency is 24 MHz; above 2.0 V, full 64 MHz operation is supported per DS12232 Rev 5 Section 5.3.1. Voltage scaling is managed automatically by the internal regulator during mode transitions.

Does this MCU support hardware encryption, and if not, what security features are included?

The STM32G071CBU7TR does not include AES or hash accelerators. It provides foundational security via Readout Protection (RDP) levels, securable Flash memory regions, 96-bit unique device identifier, and tamper-detect capable backup registers. These features enable secure boot verification and firmware IP protection but require software libraries for cryptographic operations.

How many I/O pins support 5 V tolerance, and which specific pins are they?

31 I/O pins are 5 V-tolerant: all pins in Port A (PA0–PA15), Port B (PB0–PB15), and PF0–PF1, excluding PA13/PA14 (SWD) and BOOT0. Tolerance is valid only when VDD is powered (1.7–3.6 V); no 5 V input is allowed during reset or power-down states per Section 5.3.14 of DS12232 Rev 5.

What is the wakeup time from Stop mode using the LPUART, and how is it measured?

Wakeup from Stop mode using LPUART occurs in ≤6.5 µs (typical) after detecting a start bit, as specified in Table 36 of DS12232 Rev 5. This measurement includes oscillator stabilization, clock tree reconfiguration, and NVIC vector fetch - verified under VDD = 3.3 V, TA = 25°C, with HSI16 enabled and LPUART clock sourced from LSE.