Model No: STM32G491KEU6
STMicroelectronics STM32G491KEU6
Manufacturer: STMicroelectronics
SEMICON NO.: STM32G491KEU6
Package: 32-UFQFPN
Stock: In stock
Description: MCU STM32G4 IC 32-Bit 170MHz 512KB
SEMICON NO.: STM32G491KEU6
Package: 32-UFQFPN
Stock: In stock
Description: MCU STM32G4 IC 32-Bit 170MHz 512KB
Quantity :
| Mfr | STMicroelectronics |
| Device Type | 32-bit Microcontroller (MCU) |
| Product Family | STM32G4 Series |
| Core Processor | Arm® Cortex®-M4F |
| Core Size | 32-Bit Single-Core |
| Maximum CPU Speed | 170 MHz |
| Program Memory (Flash) | 512 KB |
| RAM (SRAM) | 112 KB total (96 KB SRAM + 16 KB CCM SRAM) |
| OTP Memory | 1 KB |
| External Memory Interface | Quad-SPI |
| Analog-to-Digital Converters (ADC) | 3x 12-bit ADCs (5 Msps) |
| ADC Channels | 11 channels |
| Digital-to-Analog Converters (DAC) | 4x 12-bit DAC |
| Operational Amplifiers | 4x |
| Analog Comparators | 4x |
| General-Purpose I/O Pins | 26 |
| Supply Voltage | 1.71 V to 3.6 V |
| Operating Temperature | -40°C to +85°C |
| Package | 32-UFQFPN |
| Mounting Type | Surface Mount |
| Compliance | RoHS Compliant |
The STM32G491KEU6 is a high-performance 32-bit microcontroller from STMicroelectronics, built on the Arm Cortex-M4 processor core with a floating-point unit (FPU) operating at up to 170 MHz and delivering 213 DMIPS of processing power. This device belongs to the STM32G4 Access Line series and features 512 KB of Flash memory paired with 112 KB of SRAM, providing substantial memory resources for complex embedded applications. The “KEU6” designation indicates a compact 32-pin UFQFPN package (5mm x 5mm) with an operating temperature range of -40°C to +85°C, making it suitable for space-constrained industrial designs. The STM32G491 distinguishes itself through its exceptional analog integration, incorporating multiple high-speed ADCs, DACs, comparators, and operational amplifiers, alongside specialized hardware mathematical accelerators designed specifically for digital power conversion and motor control applications.
Feature Highlights
● Mathematical Accelerators: Integrates both CORDIC (Coordinate Rotation Digital Computer) and FMAC (Filter Math Accelerator) hardware blocks that offload trigonometric calculations and filtering operations from the CPU core, enabling faster control loop execution for motor control and digital power applications.
● Rich Analog Peripherals: Features multiple 12-bit ADCs with sampling rates up to 4 MSPS, several 12-bit DAC channels, operational amplifiers, and ultra-fast comparators, providing comprehensive mixed-signal capability on a single chip.
● Advanced Timer Ecosystem: Includes general-purpose timers, motor-control timers with complementary PWM outputs and dead-time generation, plus high-resolution timers for precise switching applications in power converters.
● Memory Configuration: Offers 512 KB Flash memory with ECC capability and 112 KB SRAM, supporting complex algorithms and data-intensive applications while maintaining data integrity.
● Comprehensive Connectivity: Provides multiple communication interfaces including USART, SPI, I2C, CAN-FD, USB device, and various other serial protocols for system integration flexibility.
FAQ
Q: What distinguishes the CORDIC and FMAC accelerators from software-based calculations?
A: The CORDIC accelerator performs trigonometric functions (sine, cosine, arctangent) approximately 10 times faster than equivalent software routines, while the FMAC executes FIR and IIR filter operations without CPU intervention, freeing the Cortex-M4 core for other tasks and enabling faster control loop frequencies critical for motor control and digital power applications.
Q:How does the STM32G491KEU6 compare to the STM32G431 series?
A: The STM32G491 offers significantly expanded memory (512KB Flash/112KB RAM versus 128KB Flash/32KB RAM in the G431) while maintaining pin compatibility and similar peripheral sets, making it ideal for applications requiring more complex algorithms or data buffering without upgrading to a higher-cost platform.
Alternative Arm Cortex-M4 MCU Models
● Microchip SAMD51: This Cortex-M4F-based MCU operates at 120 MHz with up to 1MB Flash and 256KB SRAM, offering similar analog integration and DSP capabilities in a compact form factor for industrial control applications.
● Infineon XMC4700: This industrial-focused microcontroller features a 144 MHz Cortex-M4 core with extensive motor control peripherals, six-channel CAN-FD, and robust EMC characteristics suitable for harsh environments.
● Texas Instruments TMS320F280025: This C2000-series real-time microcontroller specializes in digital power and motor control with a 100 MHz C28x DSP core, specialized control-law accelerators, and precision PWM modules optimized for power conversion applications.
● NXP Kinetis KV4F: This motor-control-optimized MCU combines a 168 MHz Cortex-M4F core with specialized motor control peripherals, high-speed ADCs, and flexible PWM generation for advanced motor drive applications in industrial automation.
Feature Highlights
● Mathematical Accelerators: Integrates both CORDIC (Coordinate Rotation Digital Computer) and FMAC (Filter Math Accelerator) hardware blocks that offload trigonometric calculations and filtering operations from the CPU core, enabling faster control loop execution for motor control and digital power applications.
● Rich Analog Peripherals: Features multiple 12-bit ADCs with sampling rates up to 4 MSPS, several 12-bit DAC channels, operational amplifiers, and ultra-fast comparators, providing comprehensive mixed-signal capability on a single chip.
● Advanced Timer Ecosystem: Includes general-purpose timers, motor-control timers with complementary PWM outputs and dead-time generation, plus high-resolution timers for precise switching applications in power converters.
● Memory Configuration: Offers 512 KB Flash memory with ECC capability and 112 KB SRAM, supporting complex algorithms and data-intensive applications while maintaining data integrity.
● Comprehensive Connectivity: Provides multiple communication interfaces including USART, SPI, I2C, CAN-FD, USB device, and various other serial protocols for system integration flexibility.
FAQ
Q: What distinguishes the CORDIC and FMAC accelerators from software-based calculations?
A: The CORDIC accelerator performs trigonometric functions (sine, cosine, arctangent) approximately 10 times faster than equivalent software routines, while the FMAC executes FIR and IIR filter operations without CPU intervention, freeing the Cortex-M4 core for other tasks and enabling faster control loop frequencies critical for motor control and digital power applications.
Q:How does the STM32G491KEU6 compare to the STM32G431 series?
A: The STM32G491 offers significantly expanded memory (512KB Flash/112KB RAM versus 128KB Flash/32KB RAM in the G431) while maintaining pin compatibility and similar peripheral sets, making it ideal for applications requiring more complex algorithms or data buffering without upgrading to a higher-cost platform.
Alternative Arm Cortex-M4 MCU Models
● Microchip SAMD51: This Cortex-M4F-based MCU operates at 120 MHz with up to 1MB Flash and 256KB SRAM, offering similar analog integration and DSP capabilities in a compact form factor for industrial control applications.
● Infineon XMC4700: This industrial-focused microcontroller features a 144 MHz Cortex-M4 core with extensive motor control peripherals, six-channel CAN-FD, and robust EMC characteristics suitable for harsh environments.
● Texas Instruments TMS320F280025: This C2000-series real-time microcontroller specializes in digital power and motor control with a 100 MHz C28x DSP core, specialized control-law accelerators, and precision PWM modules optimized for power conversion applications.
● NXP Kinetis KV4F: This motor-control-optimized MCU combines a 168 MHz Cortex-M4F core with specialized motor control peripherals, high-speed ADCs, and flexible PWM generation for advanced motor drive applications in industrial automation.
