STMicroelectronics STM32G0B1CBT3TR

Overview

STM32G0B1CBT3TR from STMicroelectronics is a 32-bit Arm® Cortex®-M0+ microcontroller operating up to 64 MHz, featuring 128 KB SRAM with hardware parity, 512 KB dual-bank Flash with read-while-write and securable area, and integrated FDCAN, USB 2.0 FS (crystal-less), and USB Type-C™ Power Delivery controller - deployed in industrial motor control and smart power delivery systems.

For engineers reviewing the STM32G0B1CBT3TR datasheet, STM32G0B1CBT3TR pinout, STM32G0B1CBT3TR application, or STM32G0B1CBT3TR equivalent, key selection criteria include dual-bank Flash security architecture, 128 MHz-capable timers for advanced motor control, FDCAN timing precision, VBAT-backed RTC with periodic wakeup, and 5 V-tolerant I/O mapping across 94 pins.

Technical Context

The device implements an Arm Cortex-M0+ core with Memory Protection Unit (MPU) and supports TrustZone®-like secure boot via securable Flash area and hardware-based readout protection (RDP). Its clock system integrates four oscillators - HSE (4–48 MHz), LSE (32.768 kHz), HSI16 (±1%), and HSI48 (for crystal-less USB) - with programmable PLL for precise peripheral clock derivation.

Peripheral interconnect uses a hierarchical AHB/APB bus matrix enabling concurrent DMA transfers and low-latency interrupt response. The 12-channel DMA controller supports flexible request mapping to peripherals including ADC, SPI, USART, and timers - critical for deterministic real-time control loops in motor and power conversion applications.

Key Specifications

Pinout & Package

STM32G0B1CBT3TR is housed in a 48-pin UFQFPN package (7 × 7 mm, 0.5 mm pitch), RoHS-compliant and ECOPACK2 certified. Pin functions are validated per ST's DS13560 Rev 6 "Pin assignment and description" (Table 12, p.47) and alternate function mapping (Tables 13–20).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32G0B1CBT3TR, the STM32G0B1RCT3TR offers expanded I/O count in LQFP64 for modular industrial designs, while the STM32G0C1VET6 delivers cryptographic acceleration and dual USB PD - making it suitable for premium power delivery systems where security and redundancy outweigh cost and size constraints.

Availability

STM32G0B1CBT3TR is available at Aetrix Electronics and suitable for industrial motor control, smart USB-C power delivery, energy metering gateways, and factory automation I/O modules requiring stable component supply across extended temperature ranges (–40°C to 125°C).

Supply support for STM32G0B1CBT3TR 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-efficient, and secure entry-level embedded applications - emphasizing rapid development, robust security features, and seamless integration with ST's ecosystem (STM32CubeMX, HAL libraries, and Nucleo boards).

FAQ

What is the maximum operating temperature rating for STM32G0B1CBT3TR?

The STM32G0B1CBT3TR is qualified for operation from –40°C to +125°C ambient temperature, verified per ST's industrial temperature grade specification (DS13560 Rev 6, Section 5.3.1). This rating applies to the full feature set including FDCAN, USB, and ADC performance, and is supported by thermal characterization data in Table 23 (page 67).

Does STM32G0B1CBT3TR support crystal-less USB operation?

Yes - the device integrates an HSI48 oscillator with automatic calibration against USB Start-of-Frame (SOF) packets, enabling full-speed USB 2.0 device and host operation without an external 48 MHz crystal. This is confirmed in Section 3.9 (Clocks and startup) and electrical characteristics Table 45 (HSI48 oscillator specs, page 87).

How many FDCAN interfaces does STM32G0B1CBT3TR include?

STM32G0B1CBT3TR integrates two independent FDCAN controllers compliant with ISO 11898-1:2015, supporting CAN FD frames up to 5 Mbps, programmable bit timing, and hardware timestamping. This is explicitly stated in the "Features" section (p.1) and detailed in Section 3.26 (p.35) of DS13560 Rev 6.

Is the 128 KB SRAM protected by hardware parity checking?

Yes - 128 KB of the total 144 KB SRAM includes hardware parity checking, as documented in the "Memories" feature list (p.1) and Section 3.4 (Embedded SRAM, p.16). Parity error detection triggers a HardFault exception, enabling fail-safe memory integrity monitoring in safety-critical applications.