The LM3S2620-IQC25-A2T: Connectivity is a strong suit: the peripheral set includes CANbus, I²C, IrDA, Microwire, QEI, SPI, SSI, and UART/USART interfaces, so it can bridge between legacy fieldbus networks and modern serial sensors or actuators without external protocol chips.
The 25 MHz core clock places this MCU in the mid-range of the Cortex-M3 performance band. It is not a high-speed DSP replacement, but it has enough throughput to run a CANopen stack, manage a PID control loop at a few kilohertz, and poll a handful of SPI sensors in a round-robin schedule without saturating the bus. The internal oscillator reduces external BOM count for applications that can tolerate its accuracy, though a precision crystal can still be attached through the on-chip clock tree. Designs requiring over-the-air update staging or large lookup tables will need to budget the Flash carefully.
This is an official Texas Instruments designation that means the part remains available for existing production programs but is no longer being actively marketed for new socket wins. There is no announced last-time-buy date in the current record, but the NRND flag is the standard precursor to eventual end-of-life — any new BOM should plan for a migration path. For a production line already qualified on this MCU, the NRND status is a signal to secure enough inventory to cover the remaining build horizon and to begin evaluating a pin-compatible or functionally equivalent successor. The Stellaris family has broad parametric overlap within the same 100-LQFP footprint, so a drop-in replacement from the same series is the upgrade path.
Package and footprint — 100-LQFP with 52 I/O
Housed in a 100-LQFP package with a 14x14 mm body, this MCU offers 52 general-purpose I/O pins. The LQFP footprint is a standard for medium-density MCU designs — it is hand-solderable in rework, inspectable under a microscope, and does not require the via-in-pad or X-ray inspection that a BGA would demand.