My Inquiry
My Account
STMicroelectronics STM32G491VCT6TR
- Part No.:
- STM32G491VCT6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
STM32G491VCT6TR.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,532
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STM32G491VCT6TR 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 STM32G491VCT6TR datasheet, STM32G491VCT6TR pinout, STM32G491VCT6TR application, or STM32G491VCT6TR equivalent, key selection criteria include its dual FDCAN support for automotive/industrial networking, UCPD interface for USB Type-C™ power delivery, and hardware-accelerated trigonometric filtering in closed-loop control designs.
Technical Context
The device implements an Adaptive Real-Time Accelerator (ART) enabling zero-wait-state execution from Flash at 170 MHz, paired with a Memory Protection Unit (MPU) for secure task isolation. Its interconnect matrix routes 16 DMA channels across multiple AHB/APB buses, supporting concurrent high-bandwidth transfers for ADC sampling, DAC streaming, and communication stack processing.
Timing architecture integrates three advanced motor-control timers (TIM1/TIM8/TIM20) with dead-time generation, emergency stop, and up to 8 PWM outputs per timer-enabling three-phase inverter control with synchronized current sensing. The dual FDCAN controllers support ISO 11898-1:2015 compliant flexible data-rate operation up to 5 Mbit/s for deterministic fieldbus communication.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU and DSP instructions, enabling single-cycle MAC and IEEE-754 floating-point math for real-time control algorithms. |
| Max Clock Frequency | 170 MHz with 213 DMIPS performance, sustained via ART Accelerator for deterministic flash-based code execution. |
| Flash Memory | 512 KB with ECC protection and PCROP security, allowing safe firmware updates and protected bootloader storage. |
| SRAM | 112 KB total: 96 KB general-purpose SRAM (32 KB parity-checked) + 16 KB CCM SRAM (parity-checked, accessible by CPU only). |
| Analog Peripherals | 3 × 16-bit ADCs (0.25 µs conversion, up to 36 channels), 4 × 12-bit DACs (2 buffered external @ 1 MSPS, 2 unbuffered internal @ 15 MSPS). |
| Communication | 2 × FDCAN, 5 × USART/UART (including LIN/IrDA), 3 × I²C (Fast Mode Plus), 3 × SPI, USB 2.0 FS, SAI, and UCPD for USB Type-C™ PD negotiation. |
| Math Acceleration | CORDIC engine for sin/cos/tan/atan/range reduction; FMAC unit for FIR/IIR filter coefficient computation without CPU load. |
Pinout & Package
LQFP100 (14 × 14 mm, 0.5 mm pitch) package with 100 leads; RoHS-compliant, ECOPACK2 certified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA | Core & analog supply | 1.71–3.6 V input; separate VDDA enables clean analog reference for ADC/DAC/OPAMP operation. |
| VSS, VSSA | Digital & analog ground | Independent grounding reduces noise coupling between digital switching and precision analog circuits. |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/O | Up to 86 fast I/Os; most support 5 V tolerance and remappable alternate functions for flexible peripheral routing. |
| NRST | Active-low reset | Asynchronous reset input with internal pull-up; compatible with external reset supervisors and push-button debouncing circuits. |
| BOOT0 | Boot mode select | Configures boot source (system memory, embedded flash, or SRAM); sampled at reset to determine startup vector location. |
| OSC_IN / OSC_OUT | External crystal interface | Supports 4–48 MHz quartz oscillator for precise clock generation; essential for USB timing and CAN bit rate accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| CORDIC accelerator | Hardware trigonometric computation reduces CPU cycles for motor angle estimation and coordinate transformations. |
| FMAC unit | Offloads real-time FIR/IIR filter coefficient updates in digital power supplies and sensor signal conditioning paths. |
| UCPD interface | Integrated USB Type-C™ Power Delivery controller enables bidirectional power negotiation without external PD ICs. |
| Advanced motor timers | TIM1/TIM8/TIM20 provide synchronized PWM, dead-time insertion, and emergency shutdown for 3-phase inverter gate drivers. |
| VREFBUF | Programmable internal voltage reference (2.048 V / 2.5 V / 2.9 V) eliminates need for external precision references in ADC/DAC calibration. |
Applications
| Industrial Motor Control | Digital Power Supply |
|---|---|
Use Scenario: Field-oriented control (FOC) of PMSM/BLDC motors in HVAC compressors and industrial pumps. IC Role / Device Role / Timing Role: Main system controller executing FOC algorithm, managing ADC sampling, PWM generation, and fault handling in <1 µs loop time. Use Value: CORDIC and FMAC accelerate Clarke/Park transforms and current-loop filters, reducing CPU load by >40% versus software-only implementation. | Use Scenario: Isolated AC/DC and DC/DC converters with adaptive voltage regulation and digital compensation. IC Role / Device Role / Timing Role: Digital controller implementing PID and adaptive compensation in real time using internal DACs and high-speed ADCs. Use Value: Dual 1 MSPS buffered DAC outputs drive optocoupler feedback loops; 16-bit ADC oversampling achieves <0.1% output voltage regulation accuracy. |
| Automotive Body Electronics | Smart Industrial Sensors |
Use Scenario: Gateway modules and body control units requiring CAN FD communication and secure firmware updates. IC Role / Device Role / Timing Role: Central node managing FDCAN bus traffic, LIN subnetworks, and secure OTA updates via encrypted flash sectors. Use Value: Dual FDCAN controllers support simultaneous high-speed (5 Mbit/s) and legacy (1 Mbit/s) CAN networks; PCROP secures bootloader against unauthorized modification. | Use Scenario: Condition-monitoring sensors with onboard signal processing, wireless telemetry, and battery longevity optimization. IC Role / Device Role / Timing Role: Edge-processing node performing vibration FFT analysis, temperature compensation, and low-power wake-on-event detection. Use Value: Low-power stop modes draw <1.5 µA while retaining RTC alarm and comparator-triggered wakeup; internal OPAMPs condition piezoelectric sensor signals before ADC digitization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32G474RET6 | Same core and peripherals but 512 KB Flash reduced to 512 KB (same), 96 KB SRAM (vs. 112 KB), no UCPD interface. | Lacks USB Type-C™ PD controller; unsuitable for USB-C powered devices requiring source/sink negotiation. | Select when UCPD is unnecessary and cost sensitivity outweighs SRAM margin. |
| STM32H743VIT6 | Cortex-M7 core @ 480 MHz, 2 MB Flash, 1 MB RAM, dual-core option, but no CORDIC/FMAC and higher power consumption. | Better raw compute for AI inference or GUI rendering; lacks analog math accelerators critical for real-time motor/power control. | Select for high-throughput applications where analog acceleration is secondary to CPU bandwidth. |
Compared with STM32G474RET6, the STM32G491VCT6TR adds UCPD and 16 KB extra CCM SRAM for tighter real-time control loops; versus STM32H743VIT6, it trades peak CPU speed for deterministic analog acceleration and lower active power in motor/power applications.
Availability
STM32G491VCT6TR is available at Aetrix Electronics and suitable for industrial motor drives, digital power supplies, automotive body electronics, and smart sensor nodes requiring stable component supply across multi-year production cycles.
Supply support for STM32G491VCT6TR 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, cost-sensitive embedded applications demanding rich analog integration, real-time math acceleration, and robust communication interfaces-including FDCAN, USB Type-C™, and advanced motor control peripherals.
FAQ
What is the maximum operating temperature range for STM32G491VCT6TR?
The STM32G491VCT6TR is rated for industrial temperature range: –40 °C to +85 °C ambient, validated per ST's qualification standards (AEC-Q100 not applicable; intended for industrial, not automotive-grade use). Thermal derating begins above 85 °C ambient, requiring PCB-level thermal design per Section 6.10 of DS13122 Rev 4.
Does STM32G491VCT6TR support hardware encryption or secure boot?
It includes proprietary code readout protection (PCROP) and securable memory areas, but no dedicated cryptographic accelerators (AES/RSA/SHA) or true secure boot ROM. Secure firmware update workflows rely on PCROP-protected bootloader sectors and external trusted execution environments-not on-chip hardware root-of-trust.
Can the internal op-amps be configured as programmable gain amplifiers (PGAs)?
Yes-four operational amplifiers are fully accessible with all terminals exposed, supporting PGA configurations via external resistor networks. Each OPAMP supports non-inverting, inverting, and differential gain modes; internal routing allows direct connection to ADC inputs for calibrated sensor signal conditioning without external components.
Is the STM32G491VCT6TR pin-compatible with other STM32G4-series MCUs in LQFP100?
No-pin compatibility is limited to same-density variants within the G491xC/E family (e.g., STM32G491VET6). The VCT6TR uses LQFP100, but peripheral mapping differs significantly from G474/G484 derivatives due to distinct analog subsystem routing and UCPD pin allocation, requiring board-level redesign for substitution.
STM32G491VCT6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 100-LQFP
- Series:
- STM32G4
- Packaging:
- Tape & Reel (TR)
- 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:
STM32G491VCT6TR FAQ
1.How can I place an order for STM32G491VCT6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32G491VCT6TR 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 STM32G491VCT6TR reliable?
The price and inventory of STM32G491VCT6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32G491VCT6TR is usually 5 days.
3.What payment methods are accepted for STM32G491VCT6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32G491VCT6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32G491VCT6TR?
STM32G491VCT6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32G491VCT6TR 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 STM32G491VCT6TR?
For technical support, including STM32G491VCT6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32G491VCT6TR requirements.
6.How does Aetrix verify that STM32G491VCT6TR is sourced from the original manufacturer or authorized distributors?
All STM32G491VCT6TR 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 STM32G491VCT6TR meets industry standards.
7.What is the process for return or replacement of STM32G491VCT6TR?
All STM32G491VCT6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32G491VCT6TR, 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 STM32G491VCT6TR part is unused and in its original packaging.
Return procedure for STM32G491VCT6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32G491VCT6TR 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…
