STMicroelectronics STM32G4A1REI6

Overview

STM32G4A1REI6 from STMicroelectronics is a 32-bit Arm® Cortex®-M4 microcontroller with FPU, operating up to 170 MHz (213 DMIPS), featuring 512 KB Flash with ECC, 112 KB SRAM (96 KB + 16 KB CCM), and integrated analog peripherals including three 16-bit ADCs, four 12-bit DACs, four rail-to-rail comparators, and four operational amplifiers - deployed in motor control, digital power conversion, and industrial sensing systems.

For engineers reviewing the STM32G4A1REI6 datasheet, STM32G4A1REI6 pinout, STM32G4A1REI6 application, or STM32G4A1REI6 equivalent, key selection criteria include its CORDIC/FMAC math accelerators, dual FDCAN 2.0B interfaces with flexible data rate, UCPD controller for USB Type-C™ PD, and 5 V-tolerant GPIOs supporting mixed-voltage system interfacing.

Technical Context

The STM32G4A1REI6 implements an Adaptive Real-time Accelerator (ART) enabling zero-wait-state execution from Flash at 170 MHz. Its interconnect matrix routes 16 DMA channels across multiple AHB/APB buses, supporting concurrent high-bandwidth peripheral access without arbitration bottlenecks.

It integrates dual FDCAN controllers compliant with ISO 11898-1:2015, supporting bit rates up to 5 Mbps in FD mode, alongside a dedicated USB Type-C™/PD controller (UCPD) with hardware CRC and protocol state machine - enabling native source/sink role negotiation without external PHY.

Key Specifications

Pinout & Package

STM32G4A1REI6 is packaged in UFQFPN48 (7 × 7 mm, 0.5 mm pitch), a 48-pin near-chip-scale package with exposed thermal pad, rated for industrial temperature range (–40 °C to +85 °C) and ECOPACK2 compliance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32G474RET6, the G4A1REI6 trades crypto acceleration for integrated UCPD and math accelerators optimized for real-time control; versus STM32H723ZGT6, it delivers better power efficiency and lower BOM cost for deterministic analog/motor workloads without needing M7-class throughput.

Availability

STM32G4A1REI6 is available at Aetrix Electronics and suitable for industrial motor control, digital power conversion, programmable logic controllers, and USB-C enabled gateways requiring stable component supply across multi-year production cycles.

Supply support for STM32G4A1REI6 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 automotive semiconductors.

The STM32G4 series targets high-efficiency digital power, motor control, and industrial automation - combining real-time analog integration, math acceleration, and USB-C PD in a single chip to reduce system complexity and bill-of-materials cost.

FAQ

What is the maximum operating frequency and associated performance metric of the STM32G4A1REI6?

The STM32G4A1REI6 operates at up to 170 MHz with an integer performance rating of 213 DMIPS (Dhrystone 2.1). This is achieved using the Adaptive Real-time Accelerator (ART) to eliminate Flash wait states, and includes a single-precision FPU for floating-point intensive tasks like motor control algorithms.

Does the STM32G4A1REI6 support USB Type-C™ Power Delivery, and how is it implemented?

Yes - the STM32G4A1REI6 integrates a dedicated USB Type-C™/Power Delivery controller (UCPD) with hardware CRC, protocol state machine, and VBUS discharge circuitry. It supports both source and sink roles, handles PD message exchange, and manages VCONN switching without external components or firmware overhead.

How many analog-to-digital converters does the STM32G4A1REI6 include, and what are their key resolution and speed specifications?

The device includes three independent 16-bit ADCs with hardware oversampling, capable of 0.25 µs conversion time (up to 4 MSPS effective sampling rate). Each supports up to 16 external channels plus internal sensors (temperature, VREFINT, VBAT), with full 0–3.6 V input range and configurable sampling windows.

What packaging and thermal specifications apply to the STM32G4A1REI6 variant?

The STM32G4A1REI6 uses the UFQFPN48 package (7 × 7 mm body, 0.5 mm pitch, exposed thermal pad), qualified for industrial temperature range (–40 °C to +85 °C). Its θ_JA is 40.5 °C/W, and it complies with ECOPACK2 environmental standards including halogen-free and RoHS requirements.