The Texas Instruments LM3S5C31-IBZ80-A2T is a 32-bit ARM Cortex-M3 MCU from the Stellaris® series, running at 80 MHz with 512 KB Flash and 64 KB RAM. It packs 67 general-purpose I/O lines and a broad peripheral set including CAN, USB, multiple serial interfaces (I²C, SPI, SSI, UART, LIN, IrDA), plus an external bus interface for memory expansion. The 108-ball BGA package (10x10 mm) and industrial temperature range make it suitable for embedded control in factory automation, motor drives, and automotive gateway modules where the full -40°C to 85°C span is needed.
80 MHz Cortex-M3 — throughput for protocol-heavy control
The 80 MHz core speed on this ARM Cortex-M3 gives enough headroom to run a CANopen stack alongside a PID loop and USB device enumeration without stalling. The 512 KB Flash is generous for a Stellaris-class part — you can fit a full bootloader, application firmware, and a small file system. The 64 KB RAM is adequate for moderate data buffers; if your application needs large packet queues or a framebuffer, watch the RAM budget.