Cortex-M0+ at 64 MHz with USB Type-C PD
The STM32G071CBT6 is an STMicroelectronics STM32G0 series MCU built around a 32-bit ARM Cortex-M0+ core running at 64 MHz. It packs 128 KB of flash and 36 KB of SRAM, which together budget for a control loop, a USB protocol stack, and a modest data buffer without external memory. The headline peripheral is USB Type-C with Power Delivery support — this is the feature that lifts the G071 above the base STM32G0 parts. For a design that needs to negotiate power roles or charge a battery over USB-C, this MCU integrates the PHY and the PD controller, saving a separate chip and the associated BOM cost.
Memory, analog, and I/O budget
The 128 KB flash is organized as 128K x 8 bits. With 36 KB of RAM, the headroom above a typical FreeRTOS + USB stack is about 20 KB for application data — enough for a moderate sensor buffer or a command queue. The 44 general-purpose I/O lines in the 48-LQFP package give enough pins for a parallel display interface or a bank of external interrupts without bit-banging. The 17 input channels cover multiple sensor feedback paths — current sense, voltage divider, temperature — without an external mux. The dual DACs can generate two independent analog setpoints or a differential output for a motor-drive reference. At the low end, the MCU runs from a near-depleted Li-ion cell or a 1.8 V regulated rail.
Package and board integration
The STM32G071CBT6 ships in a 48-LQFP package with a 7x7 mm body and 0.5 mm pitch. Surface-mount assembly is standard for this pitch; the 0.5 mm lead pitch requires a solder-paste stencil with 0.25 mm apertures and a reflow profile per JEDEC J-STD-020 for the LQFP package. The tray packaging (not tape-and-reel) means the part is handled in trays for prototype or low-volume builds; for high-volume reflow, request the reel-pack variant if available.
Lifecycle and supply posture
The part is RoHS3 compliant. No stock-holding claim — quoted to order per RFQ.