Core and memory profile for BOM fit
The LM3S1607-IQR50-A0: The 64-LQFP package (10x10 mm body) keeps the board footprint compact, with 33 general-purpose I/O lines accessible for sensor inputs, actuator outputs, or a parallel display interface.
Peripheral set and analog integration
On-chip connectivity includes I²C, SPI, SSI, UART/USART, and IrDA — covering the common serial buses for industrial sensor networks and human-machine interface panels. The 8-channel 10-bit ADC samples analog signals directly, eliminating a separate converter on the board. Built-in brown-out detect, POR, and watchdog timer handle power-sequencing and fault recovery without external supervisor ICs. The internal oscillator runs the core, though an external crystal can be used for tighter timing on the serial ports.
Supply rails and temperature range
The core and I/O share a single 2.25 V to 2.75 V supply rail — a narrow window that demands a regulated 2.5 V rail with ±10 % tolerance.
NRND lifecycle — planning the BOM line
Texas Instruments lists the LM3S1607-IQR50-A0 as NRND (Not Recommended for New Designs). This means the part is still available for existing production but is not intended for new board spins. For sustainment programs already using this MCU, the part remains orderable through independent distribution channels.