64 MHz Cortex-M0+ with USB Type-C PD — the power-aware control MCU
The STM32G071C8T6 is a 32-bit single-core ARM Cortex-M0+ microcontroller from the STM32G0 series, clocked at 64 MHz. It carries 64 KB of on-chip flash and 36 KB of RAM — enough headroom for a real-time control loop with a communication stack and a modest data buffer. The headline feature is the integrated USB Type-C Power Delivery controller, which lets this MCU negotiate power roles and data on a single connector without an external PD PHY — a board-space win for compact battery-powered or bus-powered peripherals.
48-LQFP footprint and 44 I/O — board-fit constraints
The 0.5 mm pitch demands careful fan-out on a two-layer board — inner rows may need via stitching to break out to the power and ground planes.
Peripheral set and analog interface
On-chip peripherals include DMA, PWM timers, a temperature sensor, and brown-out detection. The DMA offloads the CPU during periodic ADC reads or UART transfers, leaving the Cortex-M0+ free for the control algorithm.