Блог компании ST STM32G474 High-Performance Mainstream 170MHz Arm Cortex-M4 MCU

Shenzhen Mingjiada Electronics Co., Ltd. supplies the ST STM32G474, a high-performance, mainstream 170 MHz Arm Cortex-M4 microcontroller.

The STM32G474 belongs to the STM32G4 high-performance mixed-signal sub-series. It features an Arm Cortex‑M4 core running at 170MHz, integrated with an FPU, DSP instructions, a rich analogue front-end, high-resolution timers and a maths accelerator. It is primarily designed for applications such as digital power, motor control, industrial signal acquisition and USB‑PD, and is a mainstream mixed-signal MCU for industrial control.

1. STM32G474 Core and Computational Capabilities
- Core: Arm Cortex‑M4, up to 170 MHz, delivering 213 DMIPS
- Built-in single-precision FPU, complete DSP instruction set, and MPU memory protection unit
- ART (Adaptive Real-Time Accelerator): Zero-wait execution from Flash
- Dual hardware maths accelerators
- CORDIC: Accelerates trigonometric operations such as sine, cosine, arctangent and square root
- FMAC: Hardware acceleration for filter, PID and convolution operations, significantly reducing the CPU load

2. STM32G474 Memory Resources
- Flash: Up to 512 KB, with ECC error correction, dual-bank RWW (read-write-write) simultaneous operations, support for PCROP proprietary code protection and secure storage areas, and an integrated 1 KB OTP
- SRAM: Total of 128 KB (96 KB general-purpose SRAM + 32 KB CCM-SRAM tightly coupled memory, with parity checking)
- External expansion interfaces: FSMC static memory controller (100-pin and above packages, supporting SRAM/PSRAM/NOR/NAND), Quad-SPI (external Flash)

3. STM32G474 Analogue peripherals (core strengths)
- 5 x 12-bit ADCs, up to 4 MSPS, supporting hardware oversampling equivalent to 16-bit precision, multi-channel synchronous sampling
- 6 on-chip operational amplifiers (op-amps) with programmable gain
- 7 high-speed comparators supporting rapid fault shutdown
- 7-channel DAC (3 external outputs + 4 internal channels), suitable for waveform generation and analogue loop control

4. STM32G474 Timers (Core for Power Supply and Motor Control)
- High-resolution timer (HRTIM, 184 ps resolution), a core peripheral for digital PFC, LLC, inverters and servo drives, capable of generating high-precision complementary PWM, dead time and fault latching
- 3 advanced motor control timers (with complementary outputs, braking and dead time)
- 2 x 32-bit general-purpose timers, multiple sets of 16-bit timers, 1 x low-power timer (LPTIM), independent watchdog + windowed watchdog, RTC real-time clock (with alarm)

5. STM32G474 Communication Interfaces
- 3 FDCAN (CAN FD) channels, the preferred choice for industrial bus systems
- USB 2.0 Full-Speed + UCPD USB Type-C PD 3.0 controller (with integrated PHY), capable of functioning as a PD power adapter or bidirectional power delivery device
- 5 USART/UART channels + 1 LPUART low-power serial port
- 4 I²C channels (1 Mbps Fast Mode Plus)
- 4 SPI channels, of which 2 are multiplexable with I²S; 1 SAI audio interface
- Infrared (IRTIM), CRC, true random number generator (RNG), and AES hardware encryption module

6. STM32G474 Electrical and Low-Power Features
- Supply voltage: 1.71 V to 3.6 V; VDDA provides independent power supply for the analogue domain
- Low-power modes: Sleep, Stop, Standby, Shutdown; VBAT supports RTC backup domain
- Integrated POR/PDR/BOR (power-on, power-down and under-voltage) detection, and programmable voltage detector (PVD)
- Internal high-precision RC oscillator with ±1% accuracy, eliminating the need for an external crystal oscillator in certain scenarios

7. STM32G474 Packaging and Model Naming
The series comprises STM32G474xB / G474xC / G474xE, with Flash capacity increasing in that order; packaging options range from 48-pin to 128-pin: LQFP, UFQFPN, TFBGA, etc., such as STM32G474RE, STM32G474VE, STM32G474ME, etc.
Operating temperature: Industrial grade –40°C to +125°C

8. STM32G474 Typical Applications
- Digital power: Totem-pole PFC, LLC resonant converters, bidirectional DC/DC converters, server power supplies, chargers
- Motor drives: servo motors, BLDC motors, stepper motors, industrial frequency converters
- Industrial signal acquisition, PLC analogue modules, sensor signal conditioning
- USB-PD fast charging, bidirectional Type-C power devices
- Inverters, analogue control loops for energy storage BMS, signal control for automated equipment
- Servo drive control for humanoid robot joints

Shenzhen Mingjiada Electronics Co., Ltd. has specialised in the distribution of electronic components for nearly thirty years. As an independent distributor with a global presence, the company relies on stable direct channels from original manufacturers, a dual-warehouse stock system, professional quality control and full-cycle support services to provide reliable component supply assurance for clients across various industries.

Shenzhen Mingjiada Electronics Co., Ltd. stocks the full range of ST STM32G474 models, including the STM32G474RB, STM32G474RC, STM32G474RE, STM32G474VE and STM32G474ME, featuring various Flash capacities and package types. We supply genuine, original equipment manufacturer (OEM) components and support both small-batch sample orders and large-volume, long-term supply, complete with technical data sheets, lead time verification and BOM fulfilment services.