STMicroelectronics STM32G4 series STM32G474QBT6, 32-bit ARM Cortex-M4F MCU, 170MHz, 128KB Flash, 128K x 8 RAM, 107 I/O, 42x12b ADC, 7x12b DAC, -40°C to 85°C, 128-LQFP.
| Parameter | Value |
|---|---|
| Series | STM32G4 |
| Mounting | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 1.71V ~ 3.6V |
| Operating temperature | -40°C~85°C(TA) |
| Speed | 170MHz |
| Package | Tray |
| RAM size | 128K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT |
| Connectivity | CANbus, I²C, IrDA, LINbus, QSPI, SPI, UART/USART |
| Number of i (O) | 107 |
| Core processor | ARM® Cortex®-M4F |
| Case | 128-LQFP |
| Data converters | A/D 42x12b; D/A 7x12b |
| Program memory size | 128KB (128K x 8) |
The 170 MHz core speed means the part can run a field-oriented control loop at tens of kilohertz with headroom for comms stack overhead.
Housed in a 128-LQFP (14x14 mm) package, the STM32G474QBT6 is a surface-mount device with a 0.5 mm pitch.
No. The STM32G474QBT6 is listed as active by the manufacturer.
The difference is in the package variant — the QBT6 suffix indicates a 128-LQFP package, while the RBT6 suffix typically refers to a 64-LQFP package. The core, memory, and peripheral set are otherwise identical within the STM32G474 family. Pin count and footprint differ, so a board redesign is needed to swap between them.
Standard ARM Cortex-M4F toolchains apply: STM32CubeIDE, Keil MDK, IAR EWARM, and GCC-based toolchains. Debugging is via the SWD or JTAG port using an ST-Link or J-Link probe. The STM32CubeG4 HAL and LL drivers are available from ST.