170 MHz Cortex-M4 with mixed-signal muscle
This is an STM32G4 series part built around an ARM Cortex-M4 core running at 170 MHz. The 20-channel 12-bit SAR ADC and 7-channel 12-bit DAC let it handle analog feedback loops without an external converter. Connectivity includes CANbus, I²C, SPI, UART/USART, USB, and QSPI, plus peripherals like a TRNG and PWM timers.
48-LQFP — field-swappable with a standard iron
Housed in a 48-LQFP (7x7 mm) package with a 0.5 mm pitch, this part is rework-friendly. A standard soldering iron and some flux are enough to swap it on a board — no hot-air station required, which matters when you are fixing a motor drive on a customer site. The exposed pad on the bottom needs a via stitch under the package for thermal relief if the MCU is running the ADC and PWM at full tilt. The 38 I/O lines leave room for a parallel LCD or a bank of sensors alongside the usual serial buses.
What the TR suffix means for your reel
If your BOM calls for the tray variant (STM32G473CCT6 without the TR), the silicon is identical; only the shipping medium differs.