NRND — not recommended for new designs
TI has marked the LM3S2110-IQC25-A2 as NRND (Not Recommended for New Designs). It is still available for existing production runs, but the manufacturer has signaled a future EOL notice.
25 MHz, 64 KB Flash, 16 KB RAM — what the numbers mean for your design
The 25 MHz clock rate is modest by today's standards, but it is deliberate: the Cortex-M3 pipeline executes most instructions in a single cycle, so the throughput is adequate for control loops running at a few kilohertz and for protocol handling on the CAN and UART interfaces. The 64 KB Flash is enough for a modest application stack — a CANopen node, a Modbus-to-CAN gateway, or a brushless-DC motor controller — but leaves little room for a full RTOS with extensive middleware. The 16 KB RAM supports a few hundred bytes of data buffers per peripheral; if your application needs large packet buffers or a frame buffer, you will hit the ceiling quickly. The 40 I/O pins in the 100-LQFP give you headroom for external sensors, relays, and a parallel LCD interface.
Peripherals and connectivity — what is on-chip
The peripheral set includes a brown-out detect and reset circuit, a POR monitor, a PWM module, and a watchdog timer — the basics for a reliable embedded controller. On the communication side, the part has CANbus, I²C, IrDA, Microwire, SPI, SSI, and UART/USART. The CAN interface is the standout for industrial and automotive applications where you need a deterministic bus. The SPI and SSI ports handle external ADCs, DACs, or serial Flash. The UARTs support IrDA if you need wireless line-of-sight data transfer. No USB or Ethernet on this die — those go on the higher-density Stellaris variants.
Temperature grade and environment
Operating temperature range is -40°C to 85°C. The 100-LQFP package is a standard surface-mount footprint. Supply voltage is 2.25 V to 2.75 V.