Texas Instruments has marked the LM3S600-IQN50-C2T as Obsolete. Quantities are lot-specific and confirmed at RFQ. No stock-holding claim — sourced per order.
Core and memory — what fits the BOM
ARM Cortex-M3 core running at 50 MHz — the 32-bit single-core architecture delivers deterministic interrupt response for real-time control loops. The 32 KB on-chip Flash (32K x 8) and 8K x 8 SRAM suit moderate-complexity firmware: a bootloader, a scheduler, and a few peripheral drivers fit without external memory. The internal oscillator eliminates the external crystal for basic timing, though an external clock source can be used through the oscillator input.
Peripherals and I/O — control-loop fit
36 general-purpose I/O lines in the 48-LQFP package. On-chip peripherals include a PWM generator, watchdog timer, brown-out detect, and POR — enough for a motor-control or sensor-interface node without external supervisor ICs. Connectivity covers I2C, SPI, SSI, Microwire, and UART/USART — the SSI and Microwire interfaces are legacy synchronous protocols still found in industrial encoder and ADC front-ends. The UART supports full-duplex asynchronous communication up to the core clock rate.
Package and temperature grade
48-pin LQFP with a 7x7 mm body (Supplier Device Package 48-LQFP 7x7). The 0.50 mm pitch demands a 4-layer board for clean fan-out of the inner rows; two-layer breakout is possible for the outer rows only. The silicon is rated for the full span — no derating needed for outdoor or unconditioned enclosure deployment. Surface-mount assembly per JEDEC MSL level (verify on the reel label); store the reels dry if the moisture barrier bag is compromised.