The Texas Instruments LM3S600-EGZ50-C2 is a 32-bit ARM Cortex-M3 MCU from the Stellaris 600 series, clocked at 50 MHz with 32 KB Flash and 8 KB RAM. It packs 36 general-purpose I/O, a full set of serial interfaces (I²C, SPI, SSI, UART/USART, Microwire), and on-chip peripherals including brown-out detect, POR, PWM, and a watchdog timer. The part is rated for -40 to 105°C, making it a fit for industrial control, motor drive, and outdoor telecom applications where the ambient temperature swings wide. The 48-VQFN package keeps the footprint compact for space-constrained boards.
50 MHz core — what it means for the control loop
At 50 MHz, this Cortex-M3 executes single-cycle multiply and hardware divide. The 8 KB RAM is the tight constraint — enough for a modest RTOS heap and a few data buffers.
Package and mounting — board-level fit
Surface-mount package with exposed pad (7x7 mm). The exposed pad must be soldered to a thermal land on the PCB for adequate heat dissipation. The 36 I/O are available on the perimeter pads.