STMicroelectronics STM32G491VET6TR

Overview

STM32G491VET6TR from STMicroelectronics is an Arm® Cortex®-M4 32-bit 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. It targets motor control, digital power conversion, and industrial sensing systems requiring real-time math acceleration via CORDIC and FMAC.

For engineers reviewing the STM32G491VET6TR datasheet, STM32G491VET6TR pinout, STM32G491VET6TR application, or STM32G491VET6TR equivalent, key selection criteria include FDCAN support for automotive-grade communication, 5 V-tolerant I/Os for mixed-voltage interfacing, ultra-fast analog subsystem performance (0.25 µs ADC, 1 MSPS buffered DAC), and UCPD integration for USB Type-C™ power delivery control.

Technical Context

The STM32G491VET6TR implements a dual-bank flash architecture with PCROP and securable memory zones, coupled with an Adaptive Real-time Accelerator (ART) enabling zero-wait-state execution at 170 MHz. Its interconnect matrix routes 16 DMA channels across multiple AHB/APB buses for concurrent peripheral access without arbitration bottlenecks.

It integrates two FDCAN controllers compliant with ISO 11898-1:2015 (FD mode), supporting flexible data-rate up to 5 Mbps, alongside a dedicated USB Type-C™/PD controller (UCPD) with hardware CRC and protocol state machine - eliminating need for external PD policy engine in compact power adapters and docking stations.

Key Specifications

Pinout & Package

STM32G491VET6TR uses the LQFP100 (14 × 14 mm) package with 100 pins, ECOPACK2-compliant, rated for industrial temperature range (–40 °C to +85 °C). Pin functions are validated per DS13122 Rev 4 Section 4.8 (LQFP100 pinout description) and Table 12 (pin definition).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-performance mixed-signal microcontroller applications.

Compared with STM32G474RET6, the STM32G491VET6TR adds UCPD and enhanced analog density for USB-C PD + sensor fusion in space-constrained designs; versus STM32H743VIT6, it delivers superior energy efficiency and deterministic latency for real-time control at 40% lower active power.

Availability

STM32G491VET6TR is available at Aetrix Electronics and suitable for industrial motor drives, digital power supplies, smart grid instrumentation, and portable medical devices requiring stable component supply across long production lifecycles.

Supply support for STM32G491VET6TR 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 products for industrial, automotive, and consumer markets.

The STM32G4 series targets high-efficiency digital power conversion and precision motor control, integrating math accelerators and robust analog peripherals to replace discrete signal-chain components in cost-sensitive, space-constrained applications.

FAQ

What is the maximum operating temperature range for STM32G491VET6TR?

The STM32G491VET6TR is qualified for industrial temperature range: –40 °C to +85 °C ambient. This is confirmed in DS13122 Rev 4 Section 5.3.1 and Table 17. The LQFP100 package thermal resistance (θ_JA) is 27.5 °C/W, enabling reliable operation at full frequency under natural convection cooling in enclosed enclosures.

Does STM32G491VET6TR support hardware encryption for firmware security?

No - the STM32G491VET6TR does not integrate AES, PKA, or TRNG-based key derivation engines. It offers proprietary code readout protection (PCROP) and securable memory areas, but lacks dedicated cryptographic accelerators. For hardware encryption, ST recommends STM32L5 or STM32U5 series with ARM TrustZone and AES-256 engines.

Can the CORDIC unit perform inverse trigonometric functions like arcsin or arccos?

Yes - the CORDIC unit supports vectoring mode, enabling computation of arctan(y/x), arcsin(x), and arccos(x) directly in hardware. As documented in DS13122 Rev 4 Section 3.8, it computes magnitude and phase of complex numbers, and its microcode supports all six basic trigonometric and inverse trigonometric functions with typical latency of 12–20 cycles.

Is the 16 KB CCM SRAM accessible by DMA?

No - the 16 KB CCM SRAM (Core-Coupled Memory) is only accessible by the Cortex-M4 core via instruction and data buses; it is excluded from the AHB bus matrix and therefore unavailable to DMA controllers. This design ensures deterministic ISR execution latency, as confirmed in DS13122 Rev 4 Section 3.5 and Table 4 (DMA implementation).