Overview
The STM32G474VBT6 is a mainstream Arm Cortex-M4 microcontroller from STMicroelectronics. It is part of the STM32G474xB/xC/xE family, which is based on the high-performance Arm Cortex-M4 32-bit RISC core. This MCU operates at a frequency of up to 170 MHz and features a single-precision floating-point unit (FPU), DSP instructions, and a memory protection unit (MPU) for enhanced security. The device is equipped with 512 Kbytes of Flash memory and 128 Kbytes of SRAM, along with various peripherals and interfaces that make it suitable for a wide range of applications.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | Arm 32-bit Cortex-M4 CPU with FPU, Adaptive real-time accelerator (ART Accelerator) |
| Frequency | Up to 170 MHz with 213 DMIPS |
| Flash Memory | 512 Kbytes with ECC support, two banks read-while-write, proprietary code readout protection (PCROP) |
| SRAM | 128 Kbytes with hardware parity check implemented on the first 32 Kbytes |
| Operating Voltage | 1.71 V to 3.6 V |
| Operating Temperature | -40 to +85 °C (+105 °C junction), -40 to +125 °C (+130 °C junction) |
| ADCs | 5 x 12-bit ADCs, up to 42 channels, resolution up to 16-bit with hardware oversampling |
| DACs | 7 x 12-bit DAC channels, 3 buffered external channels, 4 unbuffered internal channels |
| Timers | 2 x 32-bit timers, 11 x 16-bit timers, high resolution timer with 184 ps resolution |
| Communication Interfaces | 3 x FDCAN, 4 x I2C, 5 x USART/UARTs, 4 x SPIs, 1 x SAI, USB 2.0 full-speed interface |
| Power Modes | Sleep, stop, standby, and shutdown |
Key Features
- Mathematical hardware accelerators: CORDIC for trigonometric functions and FMAC for filter functions
- External memory interface for static memories (FSMC) and Quad-SPI Flash memory interface
- Low-power modes: sleep, stop, standby, and shutdown
- VBAT supply for RTC and backup registers
- Clock management: 4 to 48 MHz crystal oscillator, 32 kHz oscillator with calibration, internal 16 MHz RC with PLL option
- Up to 107 fast I/Os, all mappable on external interrupt vectors
- 16-channel DMA controller
- 7 x ultra-fast rail-to-rail analog comparators and 6 x operational amplifiers
- Internal voltage reference buffer (VREFBUF) supporting three output voltages
- Calendar RTC with alarm and periodic wakeup from stop/standby
- True random number generator (RNG) and CRC calculation unit
- Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell™
Applications
The STM32G474VBT6 is versatile and can be used in a variety of applications, including:
- Industrial automation and control systems
- Medical devices requiring precise analog and digital signal processing
- Automotive systems, especially those needing advanced motor control and communication interfaces
- Consumer electronics that demand low power consumption and high performance
- IoT devices requiring robust security features and efficient data processing
Q & A
- What is the core architecture of the STM32G474VBT6?
The STM32G474VBT6 is based on the Arm 32-bit Cortex-M4 CPU with a single-precision floating-point unit (FPU) and DSP instructions.
- What is the maximum operating frequency of the STM32G474VBT6?
The maximum operating frequency is up to 170 MHz with 213 DMIPS.
- How much Flash and SRAM memory does the STM32G474VBT6 have?
The device has 512 Kbytes of Flash memory and 128 Kbytes of SRAM.
- What are the operating voltage and temperature ranges of the STM32G474VBT6?
The operating voltage range is 1.71 V to 3.6 V, and the operating temperature range is -40 to +85 °C (+105 °C junction), -40 to +125 °C (+130 °C junction).
- What types of ADCs and DACs are available on the STM32G474VBT6?
The device features 5 x 12-bit ADCs and 7 x 12-bit DAC channels.
- What communication interfaces are supported by the STM32G474VBT6?
The device supports 3 x FDCAN, 4 x I2C, 5 x USART/UARTs, 4 x SPIs, 1 x SAI, and a USB 2.0 full-speed interface.
- Does the STM32G474VBT6 have any power-saving modes?
Yes, it has sleep, stop, standby, and shutdown power-saving modes.
- What kind of timers are available on the STM32G474VBT6?
The device includes 2 x 32-bit timers, 11 x 16-bit timers, and a high resolution timer with 184 ps resolution.
- Does the STM32G474VBT6 support any specific motor control features?
Yes, it includes 3 x 16-bit 8-channel advanced motor control timers with up to 8 x PWM channels, dead time generation, and emergency stop.
- What development tools are supported by the STM32G474VBT6?
The device supports serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™.
