STMicroelectronics STM32G0B1RET6

Overview

STM32G0B1RET6 from STMicroelectronics is a 32-bit Arm® Cortex®-M0+ microcontroller with 512 KB flash, 144 KB SRAM, dual 12-bit DACs, six USARTs, and two FDCAN controllers-designed for industrial control, smart metering, and USB-C PD endpoint applications requiring high integration and low-power operation.

For engineers reviewing the STM32G0B1RET6 datasheet, STM32G0B1RET6 pinout, STM32G0B1RET6 application, or STM32G0B1RET6 equivalent, key selection criteria include its 64 MHz CPU frequency, 94 fast I/Os (including 5 V-tolerant), USB 2.0 FS device/host capability, crystal-less USB support, and dual FDCAN interfaces for robust automotive and industrial communication.

Technical Context

The STM32G0B1RET6 integrates an Arm Cortex-M0+ core with MPU, supporting up to 64 MHz operation and hardware parity on 128 KB of its 144 KB SRAM. Its memory subsystem includes dual-bank flash with read-while-write and securable area for firmware IP protection.

Clock architecture combines four oscillators (HSE, LSE, HSI16, HSI48) plus PLL, enabling precise timing for USB FS (48 MHz), RTC calibration, and low-power wakeup. Peripheral interconnect uses AHB/APB buses with DMA controller and DMAMUX for flexible data routing across ADC, DAC, timers, and communication interfaces.

Key Specifications

Pinout & Package

LQFP64 package (10 × 10 mm, 1.4 mm height), ECOPACK2-compliant, with 64 pins including dedicated VDD/VSS pairs, separate VDDIO for I/O voltage scaling (1.65–3.6 V), NRST, BOOT0, and SWD debug interface (SWCLK/SWDIO).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32G0B1RET6, the STM32G0B1REY6 trades package flexibility for miniaturization, while the STM32G0C1RET6 extends flash capacity and adds hardware crypto - both retain identical peripheral sets and software compatibility within the STM32G0 series SDK.

Availability

STM32G0B1RET6 is available at Aetrix Electronics and suitable for industrial automation, smart energy metering, USB-C power delivery adapters, and motor control systems requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for STM32G0B1RET6 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, specializing in microcontrollers, power management, sensors, and automotive ICs with strong manufacturing vertical integration.

The STM32G0 series targets cost-sensitive, low-power, and high-integration applications - designed specifically for industrial control, smart home, and USB-C ecosystem devices where security, analog integration, and USB functionality converge.

FAQ

What is the maximum operating temperature rating for STM32G0B1RET6?

The STM32G0B1RET6 is qualified for operation from –40°C to +125°C ambient temperature, meeting industrial and extended-temperature automotive requirements. This rating is validated per ST's qualification standards and applies to all LQFP64 variants in the G0B1xE family, with thermal performance confirmed in DS13560 Rev 6 Section 5.3.1.

Does STM32G0B1RET6 support crystal-less USB Full-Speed operation?

Yes - the integrated HSI48 oscillator is factory-trimmed to ±0.25 % accuracy and directly feeds the USB 2.0 FS PHY, eliminating the need for an external 48 MHz crystal. This is documented in Section 3.9 and electrical characteristics Table 45 of DS13560 Rev 6.

How many 5 V-tolerant I/Os does STM32G0B1RET6 have?

The STM32G0B1RET6 features up to 51 5 V-tolerant GPIOs across its LQFP64 package, as specified in Section 3.10 and Table 12 of DS13560 Rev 6. These pins maintain full functionality when interfaced with 5 V logic while powered from a 3.3 V or lower VDDIO supply.

Is the STM32G0B1RET6 pin-compatible with other STM32G0 series MCUs in LQFP64?

No - while it shares the LQFP64 footprint with some G0 series parts (e.g., STM32G071, STM32G081), pin functions differ significantly due to expanded peripheral count (dual FDCAN, USB-C PD, extra USARTs). Pin mapping must be verified against Table 12 in DS13560 Rev 6; direct substitution is not supported.