What this part is and where it fits
The Texas Instruments LM3S1J16-IQR50-C0T is a 32-bit ARM Cortex-M3 microcontroller from the Stellaris 1000 series, clocked at 50 MHz. It carries 128 KB of Flash program memory and 20 KB of SRAM, with an internal oscillator and a 8-channel 10-bit ADC. The part is packaged in a 64-LQFP (10x10 mm) and rated for the industrial temperature range of -40°C to 85°C.
Peripherals and connectivity
On-chip peripherals include brown-out detect, POR, PWM, WDT, and a DMA controller. The connectivity set covers I²C, IrDA, LINbus, Microwire, SPI, SSI, and UART/USART — enough for sensor aggregation, serial display links, or fieldbus bridge nodes. With 33 GPIOs in the 64-pin package, the I/O count is tight but workable for a focused control or data-acquisition role.