My Inquiry
My Account
STMicroelectronics STM32G491VCT6
- Part No.:
- STM32G491VCT6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
STM32G491VCT6.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,855
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STM32G491VCT6 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. It targets high-precision motor control, digital power conversion, and industrial sensing systems requiring real-time math acceleration via CORDIC and FMAC units.
For engineers reviewing the STM32G491VCT6 datasheet, STM32G491VCT6 pinout, STM32G491VCT6 application, or STM32G491VCT6 equivalent, key selection considerations include its LQFP100 package with 86 fast I/Os (5 V tolerant on select pins), dual FDCAN 2.0B interfaces with flexible data rate, USB 2.0 FS + UCPD for USB Type-C™ PD, and hardware cryptographic RNG - all supported by ST's STM32Cube ecosystem and production-ready toolchain.
Technical Context
The STM32G491VCT6 implements a tightly coupled memory subsystem with Adaptive Real-Time (ART) Accelerator enabling zero-wait-state execution from Flash, alongside a multi-AHB interconnect matrix for concurrent peripheral access. Its analog subsystem integrates independent voltage reference buffer (VREFBUF) with selectable 2.048 V/2.5 V/2.9 V outputs, and operational amplifiers configurable in programmable-gain amplifier (PGA) mode with full terminal access.
Timing architecture includes 15 timers: three advanced motor-control timers (TIM1/TIM8/TIM20) with dead-time generation and emergency stop, plus low-power timer (LPTIM1), RTC with calendar and alarm, and clock recovery system (CRS) for USB synchronization. Communication stack supports dual FDCAN, five USARTs (including LIN/IrDA), three SPIs with I2S multiplexing, SAI, and USB Type-C™ power delivery controller (UCPD).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU, 170 MHz max frequency (213 DMIPS), MPU, DSP instructions |
| Memory | 512 KB Flash with ECC & 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: 3 × advanced motor-control (TIM1/TIM8/TIM20), 1 × 32-bit general-purpose, 2 × watchdog (IWDG/WWDG), RTC with calendar |
| Communication | 2 × FDCAN FD, 5 × USART/UART (with LIN/IrDA), 3 × I2C (Fast Mode Plus), 3 × SPI (2 with I2S), 1 × SAI, 1 × USB 2.0 FS + UCPD |
| Math Acceleration | CORDIC engine for trigonometric/hyperbolic functions; FMAC for FIR/IIR filter computation |
| Supply Range | VDD/VDDA = 1.71 V to 3.6 V; supports multiple low-power modes (Sleep, Stop, Standby, Shutdown) |
Pinout & Package
LQFP100 (14 × 14 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant ECOPACK2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA | Core & Analog Power Supply | Separate 1.71–3.6 V supplies; VDDA must be ≥ VDD for analog accuracy |
| VSS, VSSA | Digital & Analog Ground | Independent ground planes required for noise isolation between digital and analog domains |
| NRST | Active-Low Reset Input | Asynchronous reset with internal pull-up; accepts external push-pull or open-drain assertion |
| PA0–PA15, PB0–PB15, etc. | General-Purpose I/O | 86 total I/Os; up to 5 V tolerant on specific ports (e.g., PA0–PA7, PB0–PB1); all mappable to EXTI |
| PA11/PA12 | USB D+/D− | Dedicated full-speed USB 2.0 interface pins with internal transceivers and pull-ups |
| PD0/PD1 | FDCAN1 TX/RX | Dual FDCAN controllers support CAN FD up to 5 Mbit/s with flexible data-rate arbitration |
| PC13–PC15 | RTC/OSC32_IN/OSC32_OUT | 32 kHz crystal oscillator inputs for calendar RTC with tamper detection and backup register retention |
Key Features
| Feature | Design Value |
|---|---|
| CORDIC Engine | Hardware-accelerated sine/cosine/tangent/log/exp computation reduces CPU load in motor control and sensor fusion |
| FMAC Unit | Dedicated filter math accelerator enables real-time FIR/IIR filtering without CPU intervention, critical for audio and power quality monitoring |
| VREFBUF | Programmable internal reference (2.048 V / 2.5 V / 2.9 V) eliminates need for external precision voltage references in ADC/DAC calibration paths |
| OPAMP PGA Mode | All opamp terminals accessible; configurable gain from 1× to 40× with rail-to-rail input/output - enables direct sensor signal conditioning without external components |
| UCPD Peripheral | Integrated USB Type-C™ power delivery controller handles CC line detection, VCONN switching, and PD protocol negotiation - reduces BOM count in portable charging applications |
Applications
| Industrial Motor Control | Digital Power Supply |
|---|---|
Use Scenario: Closed-loop field-oriented control (FOC) of 3-phase BLDC/PMSM motors in HVAC compressors and servo drives. IC Role / Device Role / Timing Role: Main system controller executing FOC algorithm, PWM generation (via TIM1/TIM8), current sensing (ADC oversampling), and position feedback decoding (quadrature encoder input). Use Value: CORDIC and FMAC offload trigonometric and filter computations, enabling 20 kHz PWM update rates while maintaining >10 kSPS ADC sampling for precise current loop response. | Use Scenario: Isolated AC/DC and DC/DC converters with active PFC, LLC resonant, or synchronous rectification. IC Role / Device Role / Timing Role: Digital power controller managing gate drive timing (dead-time insertion), voltage/current regulation loops, and communication with PMBus/I2C host. Use Value: Dual FDCAN supports real-time telemetry and firmware updates over industrial bus; 16-bit ADCs with hardware oversampling achieve <1% THD in voltage sensing at 100 kHz switching frequencies. |
| Smart Grid Sensor Node | USB-C Powered Industrial IoT Gateway |
Use Scenario: Compact, battery-backed metering node measuring grid voltage, current, harmonics, and temperature in distribution panels. IC Role / Device Role / Timing Role: Data acquisition hub interfacing CT/PT sensors, computing RMS/harmonic spectra, and storing logs in Flash with ECC protection. Use Value: RTC with calendar and tamper detection ensures time-stamped event logging; VREFBUF and OPAMP PGA enable single-chip front-end for ±0.1% accuracy across temperature range. | Use Scenario: Edge gateway aggregating Modbus RTU, CAN FD, and RS-485 sensor data, powered and updated via USB-C PD. IC Role / Device Role / Timing Role: Central connectivity processor handling USB-C PD negotiation (UCPD), serial protocol bridging, and secure firmware OTA via USB or FDCAN. Use Value: Integrated UCPD eliminates external PD controller IC; dual FDCAN and five USARTs allow simultaneous legacy industrial bus support without external protocol translators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32G474RET6 | Same Cortex-M4 core, 170 MHz, but only 512 KB Flash / 128 KB SRAM; lacks CORDIC/FMAC, one fewer FDCAN, no UCPD | Suitable for cost-sensitive motor control without advanced math or USB-C PD requirements | Select when USB-C PD, hardware trigonometric acceleration, or dual FDCAN are not required - lower BOM cost and smaller footprint (LQFP64) |
| STM32H743VIT6 | Cortex-M7 core, 480 MHz, 2 MB Flash / 1 MB SRAM; includes DCache/ICache, Ethernet MAC, no CORDIC/FMAC, single FDCAN | Targeted at high-throughput HMI, vision preprocessing, or real-time Ethernet networks - not optimized for analog-rich, math-intensive edge sensing | Choose for applications demanding >300 DMIPS, large code/data space, or Ethernet connectivity - at expense of higher power and complexity |
Compared with STM32G474RET6, the STM32G491VCT6 adds deterministic math acceleration and USB-C PD capability; versus STM32H743VIT6, it delivers superior analog integration and lower power for sensor/motor edge nodes - making it optimal for compact, precision industrial controllers where mixed-signal performance and embedded math are critical.
Availability
STM32G491VCT6 is available at Aetrix Electronics and suitable for industrial motor control, digital power conversion, and smart grid sensor nodes requiring stable component supply, long-term manufacturability, and full STMicroelectronics ecosystem support.
Supply support for STM32G491VCT6 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 devices, sensors, and analog ICs for industrial, automotive, and consumer markets.
The STM32G4 series targets high-performance, analog-rich embedded applications - combining real-time determinism, mathematical acceleration, and robust industrial connectivity in a single chip for next-generation power electronics and intelligent motion systems.
FAQ
What is the maximum operating frequency and corresponding DMIPS rating of the STM32G491VCT6?
The STM32G491VCT6 operates at up to 170 MHz with an integer DMIPS rating of 213, measured using the Dhrystone 2.1 benchmark with ART Accelerator enabled and zero-wait-state Flash execution. This performance level is sustained across the full industrial temperature range (–40 °C to +85 °C) under specified VDD and VDDA conditions.
Does the STM32G491VCT6 support hardware-based cryptographic operations?
The STM32G491VCT6 includes a true random number generator (RNG) compliant with NIST SP800-90B and ISO/IEC 19790, but does not integrate AES, SHA, or PKA accelerators. Cryptographic functions must be implemented in software or via external co-processors; however, its 96-bit unique ID and Flash PCROP support secure boot and firmware authentication workflows.
How many analog-to-digital converter (ADC) instances are integrated, and what is their maximum resolution and sampling speed?
The device integrates three independent 12-bit ADCs (ADC1/ADC2/ADC3), each capable of 16-bit resolution with hardware oversampling (up to 256×). Maximum effective sampling rate is 4 MSPS per ADC in interleaved mode, with 0.25 µs conversion time and full-scale input range of 0 to VREF+ (up to 3.6 V). All ADCs share common calibration and support injected/conversion sequences.
Is the STM32G491VCT6 pin-compatible with other members of the STM32G4 series?
No - the STM32G491VCT6 uses an LQFP100 package (14 × 14 mm), while most other G4-series variants (e.g., STM32G431, G474) use LQFP64 or UFQFPN48 packages. Pin mapping differs significantly across packages due to peripheral count and I/O routing constraints; migration requires PCB redesign and firmware adaptation even within the same G4 family.
STM32G491VCT6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 100-LQFP
- Series:
- STM32G4
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- ARM® Cortex®-M4
- Core Size:
- 32-Bit
- Speed:
- 170MHz
- Connectivity:
- CANbus, I2C, IrDA, LINbus, QSPI, SAI, SPI, UART/USART, USB
- Peripherals:
- Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT
- Number of I/O:
- 86
- Program Memory Size:
- 256KB (256K 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 SAR; D/A 4x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32G491VCT6 FAQ
1.How can I place an order for STM32G491VCT6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32G491VCT6 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 STM32G491VCT6 reliable?
The price and inventory of STM32G491VCT6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32G491VCT6 is usually 5 days.
3.What payment methods are accepted for STM32G491VCT6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32G491VCT6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32G491VCT6?
STM32G491VCT6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32G491VCT6 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 STM32G491VCT6?
For technical support, including STM32G491VCT6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32G491VCT6 requirements.
6.How does Aetrix verify that STM32G491VCT6 is sourced from the original manufacturer or authorized distributors?
All STM32G491VCT6 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 STM32G491VCT6 meets industry standards.
7.What is the process for return or replacement of STM32G491VCT6?
All STM32G491VCT6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32G491VCT6, 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 STM32G491VCT6 part is unused and in its original packaging.
Return procedure for STM32G491VCT6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32G491VCT6 Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
