50MHz Cortex-M3 with 64KB Flash — what the memory split means for firmware fit
The LM3S1162-IQC50-A2T: That 4:1 Flash-to-RAM ratio means the firmware image can hold a moderate application stack — think a sensor hub or motor-control loop — while leaving enough RAM for a real-time OS tick and a few communication buffers. The 2.25V to 2.75V supply rail is tighter than the usual 3.3V single-supply MCU, so the board's regulator must be set for that window.
Texas Instruments lists this part as Obsolete. For a BOM that already uses this MCU, the last-time-buy window has closed — any remaining stock is what the market holds.
The device brings 46 I/O lines, a 2×10-bit ADC, and a peripheral set that includes I²C, SPI, SSI, UART/USART, IrDA, and Microwire. Brown-out detect, POR, PWM, and a watchdog timer are integrated — enough for a standalone controller without external supervisor ICs.
100-LQFP (14×14) — board integration and rework
The exposed pad is not present on this package — thermal dissipation relies on the leadframe and board copper. For rework, the fine pitch demands a hot-air nozzle that covers the full body; a standard soldering iron tip won't reach the inner rows.