STMicroelectronics STM32G081EBY6TR

Overview

STM32G081EBY6TR from STMicroelectronics is a 32-bit Arm® Cortex®-M0+ microcontroller operating up to 64 MHz, featuring 128 KB flash, 36 KB SRAM, dual 12-bit DACs, 12-bit ADC with hardware oversampling, and AES-128/256 encryption. It integrates USB Type-C Power Delivery controller, four USARTs (two with ISO7816/LIN/IrDA), two I²C interfaces (one SMBus/PMBus-capable), and calendar RTC with wakeup from Stop/Standby - deployed in industrial sensor nodes requiring secure, low-power edge processing.

For engineers reviewing the STM32G081EBY6TR datasheet, STM32G081EBY6TR pinout, STM32G081EBY6TR application, or STM32G081EBY6TR equivalent, key selection criteria include its 60 fast I/Os (multiple 5 V-tolerant), 14 timers (including two 128 MHz-capable), LPUART wakeup capability, VBAT-backed RTC, and ECOPACK2-compliant UFQFPN48 package with 0.5 mm pitch.

Technical Context

The STM32G081EBY6TR implements an Arm Cortex-M0+ core with MPU, supporting TrustZone-like memory protection 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 HSI (±1%) with PLL for precise timing control across temperature ranges from –40°C to 125°C.

Peripheral interconnect uses a flexible AHB/APB matrix enabling concurrent DMA transfers (7-channel controller) and configurable alternate functions across all GPIOs. Analog subsystem includes rail-to-rail comparators with programmable inputs, VREFBUF for DAC/ADC reference stabilization, and temperature sensor with factory calibration data stored in system memory.

Key Specifications

Pinout & Package

STM32G081EBY6TR is housed in a 48-pin UFQFPN (7 × 7 mm, 0.5 mm pitch) package compliant with ECOPACK2 environmental standards. Pin assignments support full peripheral remapping across GPIO ports A–F, with dedicated pins for USB Type-C PD signaling (CC1/CC2), crystal oscillators (HSE_IN/HSE_OUT, LSE_IN/LSE_OUT), and VBAT backup supply.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32G071CBT6, the STM32G081EBY6TR adds 64 KB flash, 16 KB SRAM, USB-C PD controller, and enhanced analog features - justifying its use where secure, feature-rich, space-constrained edge control is needed. Against STM32G0B1RET6, it trades memory and CAN FD for smaller size and lower cost while retaining core timing, security, and low-power capabilities.

Availability

STM32G081EBY6TR is available at Aetrix Electronics and suitable for industrial sensor nodes, smart metering endpoints, USB-C charging adapters, and PLC I/O modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for STM32G081EBY6TR 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, MEMS, and automotive-grade components since 1987.

The STM32G0 series targets cost-sensitive, ultra-low-power embedded applications demanding high integration, security, and ease of certification - particularly in industrial automation, smart home, and energy infrastructure.

FAQ

What is the maximum operating temperature rating for STM32G081EBY6TR?

The STM32G081EBY6TR is qualified for operation from –40°C to +125°C ambient temperature, meeting industrial and extended-temperature requirements. This rating is verified per ST's production test flow and documented in Section 5.3.1 of DS12231 Rev 5, with thermal derating applied above 85°C for sustained high-frequency operation.

Does STM32G081EBY6TR support hardware-based secure boot?

Yes - it implements readout protection (RDP) levels, securable flash area, and boot option bytes that enforce execution only from system memory or user flash with verified integrity. While it lacks a dedicated ROM-based secure boot loader like higher-end STM32H7, its combination of RDP, flash locking, and AES/TRNG enables certified secure boot implementations per IEC 62443.

Can the internal 16 MHz RC oscillator be used as the system clock without calibration?

Yes - the HSI16 oscillator operates at ±1% accuracy across voltage and temperature without calibration, making it suitable for time-critical applications like UART communication. Factory-trimmed calibration values are stored in system memory and can be loaded for improved stability, but are not required for basic functionality.

Is the UFQFPN48 package of STM32G081EBY6TR compatible with reflow soldering per JEDEC J-STD-020?

Yes - the UFQFPN48 package is rated for standard lead-free reflow profiles per JEDEC J-STD-020D, with peak temperature up to 260°C for 30 seconds. ST specifies MSL3 handling and provides detailed thermal profile guidance in Section 6.7 of DS12231 Rev 5, including recommended preheat, soak, and cooling rates.