72 MHz Cortex-M3 with 32 KB Flash — what the memory budget means
The 32 KB program memory suits firmware for a single control loop, sensor fusion algorithm, or communication stack where the code fits within that footprint — think motor control with field-oriented control (FOC) libraries trimmed to size, or a CANopen node handling a few PDOs. The 10 KB RAM handles moderate data buffers; if your application needs a large display frame buffer or extensive logging, you'll bump into the ceiling quickly.
Peripheral set — CAN, USB, and motor-control PWM on one chip
This MCU integrates a CANbus controller, full-speed USB, multiple SPI/I2C/UART interfaces, and a motor-control PWM timer with complementary outputs and dead-time insertion. The DMA engine offloads the core for peripheral-to-memory transfers, which matters when you're streaming ADC conversions or USB packets without stalling the CPU. The 16-channel 12-bit ADC samples at up to 1 µs per conversion — adequate for current sensing in a motor drive or for reading multiple analog sensors in a PLC I/O module.
ST lists the STM32F103R6T6A as Active (current production). ROHS3 compliant. If you need a larger Flash variant, the STM32F103R8T6 (64 KB) is pin-compatible in the same 64-LQFP footprint, though that is a separate order code.