72 MHz Cortex-M3 with 256 KB Flash — mid-range control MCU
The STM32F103RCT7: This places it in the mid-range of the STM32F1 line — enough headroom for a field-oriented motor-control loop, a CANopen stack, or a USB virtual-comport bridge without external memory. The 72 MHz core delivers roughly 1.25 DMIPS/MHz, so the effective throughput is about 90 DMIPS — adequate for real-time current-regulation loops running at 10–20 kHz with margin for the application layer.
Industrial temperature grade and peripheral set
On-chip peripherals include CAN, USB 2.0 full-speed, three UARTs, two SPIs, two I²Cs, and a motor-control PWM timer with complementary outputs and dead-time insertion — a direct fit for brushless DC or PMSM drive firmware without glue logic.
64-LQFP package — rework-friendly, common footprint
The 51 general-purpose I/O pins provide enough connectivity for a parallel LCD interface, external memory bus, or a bank of sensor inputs alongside the serial peripherals.
Active production — no end-of-life risk
The base product number STM32F103 covers a broad family of pin-compatible density and temperature variants, which simplifies BOM hedging — a drop-in upgrade to 512 KB flash (STM32F103VCT6) or a wider temperature grade is possible without a board spin.