Core specs and board-fit
The LM3S2950-EQC50-A2: Housed in a 100-pin LQFP (14x14 mm), it breaks out 60 GPIOs. The 2.25 V to 2.75 V supply rail is tight — the board needs a clean 2.5 V rail with ±10 % regulation, and the decoupling scheme should follow the LQFP-100 layout guidelines to keep core noise under the brown-out threshold.
Peripheral set and integration
On-chip peripherals include a brown-out detect, POR, PWM, and a watchdog timer — the brown-out reset is critical for the 2.5 V rail; if the supply dips below 2.25 V, the core holds reset cleanly without external supervisor IC. Connectivity covers CAN, I²C, SPI, SSI, UART/USART, IrDA, Microwire, and a quadrature encoder interface (QEI). The CAN and QEI blocks make this MCU a natural fit for motor-drive feedback and industrial fieldbus nodes. The internal oscillator eliminates the external crystal for most applications — but if the CAN bus needs a precise time base, a 16 MHz external resonator on the main oscillator input keeps the bit timing within 0.5 % tolerance.
Texas Instruments lists the LM3S2950-EQC50-A2 as Obsolete. For existing BOM lines, this part is sourced through independent distribution channels — quantities are lot-specific and confirmed at RFQ. No second-source cross-reference is maintained; a board spin is required for any functional replacement.