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STMicroelectronics STM32G491VET6

Name: STM32G491VET6
Brand: STMicroelectronics
SKU: STM32G491VET6
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STM32G491VET6

Manufacturer:: STMicroelectronics

Category:: Microcontrollers

Package:: 100-LQFP

Datasheet:: STM32G491VET6.pdf

Description:: IC MCU 32BIT 512KB FLASH 100LQFP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

STM32G491VET6 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 (including 16 KB CCM-SRAM with parity), and integrated analog peripherals including three 16-bit ADCs, four 12-bit DACs, four rail-to-rail comparators, and four operational amplifiers - deployed in industrial motor control, digital power conversion, and precision sensor signal conditioning systems.

For engineers reviewing the STM32G491VET6 datasheet, STM32G491VET6 pinout, STM32G491VET6 application, or STM32G491VET6 equivalent, key selection considerations include its dual FDCAN support for automotive-grade communication, CORDIC/FMAC hardware accelerators for real-time trigonometric and filtering math, and UCPD interface for USB Type-C™ power delivery control - all within a 100-pin LQFP package rated for -40°C to +85°C operation.

Technical Context

The STM32G491VET6 implements an Arm Cortex-M4 core with floating-point unit and Memory Protection Unit (MPU), paired with ST's 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 for concurrent peripheral access.

It integrates dual FDCAN controllers compliant with ISO 11898-1:2015 (CAN FD), a USB 2.0 full-speed interface with Link Power Management (LPM) and Battery Charging Detection (BCD), and a dedicated USB Type-C™/USB PD controller (UCPD) supporting VCONN switching and SOP' message handling - distinguishing it from base-line G4 series MCUs.

Key Specifications

Parameter	Value and Actual Design Meaning
CPU Core	Arm Cortex-M4 with FPU and MPU, 170 MHz max frequency (213 DMIPS)
Memory	512 KB Flash with ECC and PCROP; 112 KB SRAM (96 KB + 16 KB CCM-SRAM with parity)
Analog Peripherals	3 × 16-bit ADCs (0.25 µs, up to 36 channels); 4 × 12-bit DACs (2 buffered external @ 1 MSPS, 2 unbuffered internal @ 15 MSPS)
Timers	15 timers including 3 × advanced motor-control timers (TIM1/TIM8/TIM20) with dead-time generation and emergency stop
Communication	2 × FDCAN, 5 × USART/UART, 3 × I²C, 3 × SPI, 1 × SAI, 1 × USB FS, 1 × UCPD
Math Acceleration	CORDIC engine for sin/cos/tan/sqrt/log/exp; FMAC for FIR/IIR filter acceleration
Package & Temp	LQFP100 (14 × 14 mm), ECOPACK2-compliant, industrial temperature range (−40 °C to +85 °C)

Pinout & Package

LQFP100 package (14 × 14 mm, 0.5 mm pitch), RoHS-compliant and ECOPACK2-certified, with exposed thermal pad for enhanced thermal dissipation in high-duty-cycle motor control and power conversion applications.

Pin/Terminal	Circuit Role	Design Meaning
VDD, VDDA	Core & Analog Supply	1.71–3.6 V main supply; separate analog domain for precision ADC/DAC reference stability
VSS, VSSA	Digital & Analog Ground	Independent ground planes minimize noise coupling between digital switching and analog signal paths
PA0–PA15, PB0–PB15, etc.	General-purpose I/O	Up to 86 fast I/Os; most 5 V tolerant, mappable to EXTI lines for low-latency wake-up or event capture
PA11/PA12	USB D+/D−	Dedicated full-speed USB 2.0 transceiver pins with internal pull-ups; no external PHY required
PD0/PD1	FDCAN1 TX/RX	Dual independent FDCAN interfaces support simultaneous CAN FD bus monitoring and control in gateway or BMS applications
PC13–PC15	RTC & Oscillator	Connect 32.768 kHz crystal for calendar RTC with alarm and periodic wakeup from Stop/Standby modes
VBAT	Backup Supply	Supplies RTC and 32 backup registers during main power loss; supports tamper detection circuitry
NRST	Reset Input	Active-low reset with internal pull-up; accepts external reset sources or debugger-initiated system reset

Key Features

Feature	Design Value
CORDIC accelerator	Hardware trigonometric and hyperbolic function engine reducing CPU load by >90% vs software implementation in motor FOC or PFC algorithms
FMAC unit	Dedicated 32-bit filter math accelerator supporting real-time 2nd-order IIR and FIR filtering without CPU intervention
UCPD controller	Integrated USB Type-C™ port controller with VCONN switch, SOP' message handling, and BC1.2 charger detection - eliminates need for external UCPD IC
Advanced timer system	Three 16-bit advanced timers (TIM1/TIM8/TIM20) each with 8 PWM channels, programmable dead time, and emergency stop input for 3-phase inverter gate drive
VREFBUF	Internal voltage reference buffer with selectable outputs (2.048 V / 2.5 V / 2.9 V) for precise ADC/DAC reference and analog comparator threshold setting

Applications

Industrial Motor Control

Digital Power Conversion

Use Scenario: Field-oriented control (FOC) of 3-phase BLDC/PMSM motors in HVAC compressors and industrial drives.

IC Role / Device Role / Timing Role: Main system controller executing real-time FOC loop (current/voltage sensing, space vector modulation, PWM generation) with sub-µs timing precision.

Use Value: Integrated CORDIC and FMAC offload 75% of math-intensive calculations; advanced timers deliver synchronized 3-phase PWM with <1 ns jitter and hardware emergency stop.

Use Scenario: Digital AC-DC and DC-DC power supplies with adaptive regulation, active PFC, and multi-loop feedback.

IC Role / Device Role / Timing Role: Primary digital power controller managing voltage/current loops, thermal protection, and communication via PMBus over I²C.

Use Value: Dual 16-bit ADCs sample up to 36 analog signals simultaneously; 4× op-amps serve as configurable error amplifiers or current-sense front-ends.

Precision Sensor Signal Conditioning

USB-C Power Delivery Hub

Use Scenario: High-resolution measurement of strain gauges, RTDs, and thermocouples in test equipment and process instrumentation.

IC Role / Device Role / Timing Role: Analog front-end processor digitizing low-level signals with 16-bit resolution, oversampling, and PGA-mode op-amps.

Use Value: Three independent 16-bit ADCs with hardware oversampling achieve effective resolution >18 bits; internal VREFBUF ensures stable reference across temperature.

Use Scenario: Multi-port USB-C docking station negotiating power contracts (up to 100 W), data role swaps, and alternate mode configuration.

IC Role / Device Role / Timing Role: Central UCPD manager coordinating VBUS sourcing/sinking, CC line monitoring, and SOP/SOP' message exchange with connected devices.

Use Value: On-chip UCPD controller handles full USB PD 3.0 stack including Fast Role Swap and extended messages - no external PD controller needed.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STM32G474RET6	Same LQFP100 package, but 512 KB Flash / 128 KB SRAM; lacks UCPD, single FDCAN, no CORDIC/FMAC	Suitable for cost-sensitive motor control without USB-C PD or advanced math acceleration	Select when USB-C PD and hardware math acceleration are not required; lower BOM cost and simpler firmware stack
STM32H743VIT6	Cortex-M7 core @ 480 MHz, 2 MB Flash / 1 MB RAM, dual QUADSPI, no UCPD; larger LQFP100 footprint with different pinout	Targeted at high-throughput HMI, AI edge inference, or multi-protocol gateway - not drop-in compatible	Choose only when raw processing bandwidth, large memory, or dual external flash interfaces outweigh pin compatibility and analog integration needs

Compared with STM32G474RET6, the STM32G491VET6 adds UCPD, dual FDCAN, and hardware math accelerators - critical for USB-C PD hubs and real-time digital power. Versus STM32H743VIT6, it trades peak performance for superior analog integration and deterministic low-latency peripheral control in embedded power systems.

Availability

STM32G491VET6 is available at Aetrix Electronics and suitable for industrial motor control, digital power conversion, precision sensor signal conditioning, and USB-C power delivery hub designs requiring stable component supply across long production lifecycles.

Supply support for STM32G491VET6 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 STM32G4 series targets high-performance, analog-rich embedded applications - specifically engineered for digital power, motor control, and USB-C PD systems where real-time determinism, precision analog integration, and hardware-accelerated math are essential.

FAQ

What is the maximum operating frequency and associated performance metric of the STM32G491VET6?

The STM32G491VET6 operates at a maximum CPU frequency of 170 MHz, delivering 213 DMIPS (Dhrystone MIPS) with the ART Accelerator enabled. This performance level is sustained across the full industrial temperature range (−40 °C to +85 °C) and supported by zero-wait-state Flash execution, verified per DS13122 Rev 4 Section 3.1 and Table 17.

Does the STM32G491VET6 support USB Type-C™ Power Delivery, and what interfaces are required?

Yes - the STM32G491VET6 integrates a dedicated USB Type-C™/USB PD controller (UCPD) compliant with USB PD 3.0. It requires only two CC (Configuration Channel) pins (e.g., PA13/PA14), VBUS sensing (via ADC), and optional VCONN switching circuitry. No external PD controller IC is needed, as confirmed in Section 3.35 and Figure 12 of DS13122 Rev 4.

How many analog-to-digital converters does the STM32G491VET6 include, and what are their key resolution and speed specifications?

The device integrates three independent 16-bit ADCs, each capable of 0.25 µs conversion time (up to 4 MSPS) across up to 36 channels. Hardware oversampling enables effective resolution beyond 16 bits, and the 0–3.6 V input range supports direct connection to most industrial sensors - detailed in Sections 3.18 and Table 18 of DS13122 Rev 4.

What are the low-power modes supported, and what is the typical current consumption in Stop 1 mode?

The STM32G491VET6 supports Sleep, Stop (0/1), Standby, and Shutdown modes. In Stop 1 mode (Flash powered down, SRAM retained, RTC running), typical current consumption is 2.5 µA at 25 °C with VDD = 3.3 V - measured under conditions defined in Section 5.3.29 and Table 29 of DS13122 Rev 4.

STM32G491VET6 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: 100-LQFP

Series:: STM32G4

Packaging:: Tray

Product Status:: Active

Programmable:: Not Verified

Core Processor:: ARM® Cortex®-M4F

Core Size:: 32-Bit Single-Core

Speed:: 170MHz

Connectivity:: CANbus, I2C, IrDA, IRTIM, LINbus, SAI, SPI, UART/USART, USB

Peripherals:: Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT

Number of I/O:: 86

Program Memory Size:: 512KB (512K x 8)

Program Memory Type:: FLASH

EEPROM Size:: -

RAM Size:: 112K x 8

Voltage - Supply (Vcc/Vdd):: 1.71V ~ 3.6V

Data Converters:: A/D 36x12b; D/A 4x12b

Oscillator Type:: Internal

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:

STM32G491VET6 FAQ

1.How can I place an order for STM32G491VET6 through Aetrix?

Please submit a Request for Quotation (RFQ) for STM32G491VET6 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for STM32G491VET6 reliable?

The price and inventory of STM32G491VET6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32G491VET6 is usually 5 days.

3.What payment methods are accepted for STM32G491VET6?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32G491VET6 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STM32G491VET6?

STM32G491VET6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STM32G491VET6 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for STM32G491VET6?

For technical support, including STM32G491VET6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32G491VET6 requirements.

6.How does Aetrix verify that STM32G491VET6 is sourced from the original manufacturer or authorized distributors?

All STM32G491VET6 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STM32G491VET6 meets industry standards.

7.What is the process for return or replacement of STM32G491VET6?

All STM32G491VET6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32G491VET6, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The STM32G491VET6 part is unused and in its original packaging.

Return procedure for STM32G491VET6:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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