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STMicroelectronics STM32G491MET6
- Part No.:
- STM32G491MET6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
STM32G491MET6.pdf
- Description:
- IC MCU 32BIT 512KB FLASH 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:799
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Product details
Overview
STM32G491MET6 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 - deployed in motor control, digital power conversion, and industrial sensing systems.
For engineers reviewing the STM32G491MET6 datasheet, STM32G491MET6 pinout, STM32G491MET6 application, or STM32G491MET6 equivalent, key selection criteria include its dual FDCAN 2.0B/FD support, CORDIC/FMAC hardware accelerators for real-time math, UCPD interface for USB Type-C™ PD, and 5 V-tolerant GPIOs enabling direct interfacing with legacy logic and industrial I/O.
Technical Context
The STM32G491MET6 implements a tightly coupled interconnect matrix supporting concurrent access to flash, SRAM, and peripherals - critical for deterministic execution in closed-loop motor control. Its ART Accelerator enables zero-wait-state 170 MHz operation from Flash, while the CCM SRAM (16 KB) provides low-latency instruction/data storage with hardware parity.
It integrates two independent FDCAN controllers compliant with ISO 11898-1:2015 (FD mode up to 5 Mbps), a dedicated UCPD block for USB Type-C™ power negotiation, and dual 16-bit advanced timers (TIM1/TIM8) with 8-channel PWM, dead-time insertion, and emergency stop - all synchronized via shared trigger routing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU and DSP extensions, enabling single-cycle MAC and IEEE 754-compliant floating-point math for real-time control loops. |
| Max Clock Frequency | 170 MHz with 213 DMIPS - sustained via ART Accelerator, eliminating flash wait states for deterministic timing-critical firmware. |
| Flash Memory | 512 KB with ECC and PCROP, allowing secure firmware storage and protection against unauthorized readout or field reprogramming. |
| SRAM | 112 KB total: 96 KB general-purpose (32 KB with parity), plus 16 KB CCM SRAM on both instruction and data buses for ultra-low-latency code/data access. |
| 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), 4 op-amps (PGA-capable), 4 comparators. |
| Communication | 2 × FDCAN FD, 5 × USART/UART (incl. LIN/IrDA), 3 × I²C (Fast Mode Plus), 3 × SPI, 1 × SAI, 1 × USB FS (LPM/BCD), 1 × UCPD - enabling mixed-signal system integration without external transceivers. |
| Math Accelerators | CORDIC engine for sin/cos/tan/atan/sqrt/log/exp acceleration; FMAC unit for FIR/IIR filter coefficient computation - offloading CPU in digital power and motor algorithms. |
Pinout & Package
STM32G491MET6 is housed in a 80-pin LQFP package (12 × 12 mm, pitch 0.5 mm), RoHS-compliant and ECOPACK2-certified. Pin functions are validated per ST's DS13122 Rev 4, Section 4.7 (LQFP80 pinout description) and Table 12 (pin definition).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA | Core & analog supply | 1.71–3.6 V operation; separate VDDA enables clean analog reference for ADC/DAC/OPAMP with independent filtering. |
| VSS, VSSA | Digital & analog ground | Dedicated analog ground plane minimizes noise coupling into precision analog circuits. |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/O | Up to 86 fast I/Os; multiple pins support 5 V tolerance, enabling direct connection to 5 V logic without level shifters. |
| PA11/PA12 | USB D+/D− | Integrated full-speed USB transceiver with internal termination - no external resistors required for basic USB connectivity. |
| PD0/PD1 | FDCAN1 TX/RX | Dedicated differential CAN FD physical layer interface, supporting bit rates up to 5 Mbps with flexible data-rate switching. |
| PC13–PC15 | RTC oscillator inputs | Support external 32.768 kHz crystal for calendar RTC with alarm and periodic wakeup from Stop/Standby modes. |
| VBAT | Backup supply | Enables RTC and 32 B backup registers during main power loss - powered by coin cell or supercapacitor. |
| NRST | Reset input | Active-low reset with internal pull-up; supports external reset button or supervisor IC assertion. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Real-Time Accelerator (ART) | Eliminates flash wait states at 170 MHz, ensuring deterministic interrupt latency and jitter-free execution of time-critical control code. |
| CORDIC + FMAC accelerators | Reduces CPU load by >70% in motor FOC or digital power PFC calculations - verified in ST AN5023 application note. |
| UCPD interface | Hardware-managed USB Type-C™ power delivery negotiation (voltage/current/role swap), eliminating need for external PD controller ICs. |
| Advanced motor control timers | TIM1/TIM8/TIM20 each provide 8 complementary PWM outputs with programmable dead time, fault input, and break functionality - essential for 3-phase inverter gate driving. |
| 5 V-tolerant I/Os | 32 GPIOs tolerate 5 V inputs while powered from 3.3 V, simplifying interface to industrial sensors, PLC modules, and legacy peripherals. |
Applications
| Industrial Motor Drives | Digital Power Supplies |
|---|---|
Use Scenario: Field-oriented control (FOC) of 3-phase BLDC/PMSM motors in HVAC compressors and industrial pumps. IC Role / Device Role / Timing Role: Primary controller executing real-time FOC algorithm, managing PWM generation, current sensing (via ADC), and position feedback (encoder/ Hall). Use Value: CORDIC/FMAC offload trigonometric and filter math; 16-bit ADCs resolve current ripple <10 mV; 170 MHz core sustains 20 kHz PWM update rate with safety checks. | Use Scenario: Digital AC-DC and DC-DC converters (LLC, Phase-Shifted Full-Bridge) requiring adaptive voltage/current regulation. IC Role / Device Role / Timing Role: System-on-chip controller handling PID loop, soft-start, overvoltage/overcurrent protection, and communication (PMBus via I²C). Use Value: Dual 16-bit ADCs sample primary/secondary side simultaneously; UCPD manages USB-C PD negotiation; 5 V-tolerant pins interface directly to optocoupler feedback networks. |
| Smart Industrial Sensors | USB-C Enabled Test Equipment |
Use Scenario: High-accuracy multi-parameter sensor nodes (temperature, pressure, vibration) with local edge processing and wireless backhaul. IC Role / Device Role / Timing Role: Sensor fusion hub aggregating analog inputs (OPAMP/ADC), running FFT-based vibration analysis, and buffering data before transmission. Use Value: Four OPAMPs condition signals from piezoelectric/strain-gauge sensors; 112 KB SRAM stores 10+ seconds of 16-bit sampled data; RTC timestamps measurements with ±2 ppm accuracy. | Use Scenario: Portable oscilloscopes, multimeters, and signal generators with USB-C host/device connectivity and power delivery capability. IC Role / Device Role / Timing Role: Embedded controller managing analog front-end, display interface, USB-C enumeration, and bidirectional power negotiation (sink/source). Use Value: Integrated UCPD handles PD contract negotiation; USB FS interface streams waveform data at 12 MB/s; LPUART supports Bluetooth/Wi-Fi coexistence without CPU overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-performance mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32G474RET6 | Same G4 series, but 512 KB Flash, 128 KB SRAM, no UCPD, no CORDIC/FMAC, only 1 FDCAN. | Lacks USB-C PD and hardware math acceleration - unsuitable for USB-C power negotiation or intensive real-time math. | Select when UCPD and CORDIC/FMAC are unnecessary and cost optimization is prioritized over feature density. |
| STM32H743VIT6 | Cortex-M7 @ 480 MHz, 2 MB Flash, 1 MB RAM, dual-core option, no UCPD, no CORDIC (but DWT/MPU enhanced), higher power consumption. | Targeted at high-throughput applications (e.g., GUI, Ethernet, AI inference); lacks integrated USB-C PD and analog richness of G491. | Choose for compute-intensive tasks where analog integration is secondary and USB-C PD is handled externally. |
Compared with STM32G474RET6, the G491MET6 adds UCPD and math accelerators at identical Flash size but higher analog integration; versus STM32H743VIT6, it trades raw M7 performance for lower power, richer analog, and native USB-C PD - making it optimal for compact, power-sensitive, mixed-signal edge devices.
Availability
STM32G491MET6 is available at Aetrix Electronics and suitable for industrial motor drives, digital power supplies, smart sensor nodes, and USB-C enabled test equipment requiring stable component supply across long-lifecycle deployments.
Supply support for STM32G491MET6 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, MEMS, and automotive semiconductors since 1987.
The STM32G4 series targets high-efficiency digital power conversion, motor control, and industrial automation - combining Cortex-M4 performance with specialized analog and math acceleration to replace discrete signal-chain components.
FAQ
What is the maximum operating temperature range for STM32G491MET6?
The STM32G491MET6 is rated for industrial temperature range: –40 °C to +85 °C ambient, validated per DS13122 Rev 4 Section 6.10. It uses standard LQFP80 thermal characteristics (θJA = 36.5 °C/W) and supports junction temperatures up to +125 °C under defined PCB layout conditions.
Does STM32G491MET6 support hardware encryption or secure boot?
No - the STM32G491MET6 does not integrate AES, PKA, or secure boot engines. It offers proprietary code readout protection (PCROP) and securable memory areas, but lacks cryptographic accelerators found in STM32L5 or STM32H5 series. Secure firmware updates require external trusted elements or software-based TLS stacks.
Can the CORDIC unit perform inverse trigonometric functions like arcsin or arccos?
Yes - the CORDIC engine supports both forward (sin, cos, tan) and inverse (arcsin, arccos, arctan) trigonometric functions, plus hyperbolic, logarithmic, exponential, and square-root operations, as documented in RM0440 Reference Manual Section 19.4.3 and verified in ST's X-CUBE-CORDIC firmware library.
Is the UCPD peripheral compatible with USB Power Delivery Specification Revision 3.1?
Yes - the UCPD block complies with USB PD 3.1 (including Extended Power Range up to 240 W), supporting structured vendor-defined messages (VDMs), Fast Role Swap (FRS), and programmable power supply (PPS) negotiation - confirmed in ST Application Note AN5299 and DS13122 Section 3.35.
STM32G491MET6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 80-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:
- 66
- 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 32x12b; D/A 4x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32G491MET6 FAQ
1.How can I place an order for STM32G491MET6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32G491MET6 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 STM32G491MET6 reliable?
The price and inventory of STM32G491MET6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32G491MET6 is usually 5 days.
3.What payment methods are accepted for STM32G491MET6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32G491MET6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32G491MET6?
STM32G491MET6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32G491MET6 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 STM32G491MET6?
For technical support, including STM32G491MET6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32G491MET6 requirements.
6.How does Aetrix verify that STM32G491MET6 is sourced from the original manufacturer or authorized distributors?
All STM32G491MET6 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 STM32G491MET6 meets industry standards.
7.What is the process for return or replacement of STM32G491MET6?
All STM32G491MET6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32G491MET6, 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 STM32G491MET6 part is unused and in its original packaging.
Return procedure for STM32G491MET6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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