Overview
The STM32G474QET3 is a mainstream microcontroller from STMicroelectronics, part of the STM32G4 series. It is based on the high-performance Arm® Cortex®-M4 32-bit RISC core, operating at a frequency of up to 170 MHz. This MCU features a single-precision floating-point unit (FPU), supporting all Arm single-precision data-processing instructions and DSP (digital signal processing) instructions. It also includes a memory protection unit (MPU) to enhance application security.
The device is equipped with 512 Kbytes of Flash memory and 128 Kbytes of SRAM, along with a flexible external memory controller and a Quad-SPI Flash memory interface. It offers a wide range of enhanced I/Os and peripherals, including multiple communication interfaces and mathematical/arithmetic function accelerators.
Key Specifications
| Parameter | Specification |
|---|---|
| Core Processor | ARM Cortex-M4 |
| Program Memory Type | Flash |
| Flash Size | 512 kB |
| RAM Size | 128 kB |
| Speed | Up to 170 MHz |
| No of I/O Lines | 107 |
| Interface/Connectivity | CAN, I2C, SAI, SPI, UART, USART, USB |
| Peripherals | BOR, DMA, POR, PVD, PWM |
| Number of Timers | 15 (including 3 advanced motor control, 5 general-purpose 16-bit, 2 general-purpose 32-bit, and 1 low-power 16-bit) |
| Supply Voltage | 1.71 V to 3.6 V |
| Operating Temperature | -40°C to +125°C |
| On-Chip ADC | 42-ch x 12-bit |
| On-Chip DAC | 7-ch x 12-bit (3 external + 4 internal) |
| Watchdog Timers | 2 |
| Package Style | LQFP-128 |
Key Features
- Core and Performance: Arm® 32-bit Cortex®-M4 CPU with FPU, Adaptive real-time accelerator (ART Accelerator) allowing 0-wait-state execution from Flash memory, frequency up to 170 MHz with 213 DMIPS, MPU, and DSP instructions.
- Memories: 512 Kbytes of Flash memory with ECC support, two banks read-while-write, proprietary code readout protection (PCROP), securable memory area, and 128 Kbytes of SRAM.
- Mathematical Accelerators: CORDIC for trigonometric functions acceleration and FMAC for filter mathematical acceleration.
- Communication Interfaces: Four I2Cs, four SPIs multiplexed with two half duplex I2Ss, three USARTs, two UARTs, one low-power UART, three FDCANs, one SAI, USB device, and UCPD.
- Peripherals: Five fast 12-bit ADCs, seven comparators, six operational amplifiers, seven DAC channels, internal voltage reference buffer, low-power RTC, and various timers including advanced motor control timers.
- Power Management: Low-power modes (sleep, stop, standby, and shutdown), independent power supplies for analog components, and VBAT supply for RTC and backup registers.
- Security and Protection: Readout protection, write protection, securable memory area, and proprietary code readout protection for embedded Flash memory and SRAM.
Applications
The STM32G474QET3 is versatile and can be used in a variety of applications, including:
- Industrial Automation: Motor control, power management, and industrial communication protocols.
- Medical Devices: Diagnostic equipment, patient monitoring systems, and medical imaging devices.
- Consumer Electronics: Smart home devices, wearables, and portable electronics.
- Automotive Systems: Infotainment systems, driver assistance systems, and vehicle control units.
- IoT Devices: Smart sensors, gateways, and other connected devices requiring advanced processing and communication capabilities.
Q & A
- What is the core processor of the STM32G474QET3?
The core processor is the Arm® 32-bit Cortex®-M4 CPU with FPU.
- What is the maximum operating frequency of the STM32G474QET3?
The maximum operating frequency is up to 170 MHz.
- How much Flash and SRAM memory does the STM32G474QET3 have?
The device has 512 Kbytes of Flash memory and 128 Kbytes of SRAM.
- What are the key communication interfaces available on the STM32G474QET3?
The device features I2C, SPI, USART, UART, FDCAN, SAI, USB, and UCPD interfaces.
- What are the operating temperature and voltage ranges for the STM32G474QET3?
The operating temperature range is -40°C to +125°C, and the supply voltage range is 1.71 V to 3.6 V.
- Does the STM32G474QET3 support low-power modes?
Yes, it supports sleep, stop, standby, and shutdown low-power modes.
- What kind of mathematical accelerators are included in the STM32G474QET3?
The device includes CORDIC for trigonometric functions and FMAC for filter mathematical acceleration.
- How many ADC and DAC channels does the STM32G474QET3 have?
The device has 42-ch x 12-bit ADCs and 7-ch x 12-bit DACs (3 external + 4 internal).
- What is the package style of the STM32G474QET3?
The package style is LQFP-128.
- Does the STM32G474QET3 have any security features?
Yes, it includes readout protection, write protection, securable memory area, and proprietary code readout protection for embedded Flash memory and SRAM.
