50MHz Cortex-M3 with 256KB Flash
The LM3S2948-IQC50-A2T: Core is a 32-bit ARM Cortex-M3 running at 50 MHz — the 256 KB on-chip flash (256K x 8) and 64 KB SRAM (64K x 8) give the firmware stack room for a real-time OS, CAN stack, and moderate application code without external memory. The 52 general-purpose I/O lines break out through a 100-pin LQFP (14x14 mm body) — the 0.5 mm pitch demands a controlled-impedance stack-up on the PCB for the higher-speed peripherals.
Peripheral set: CAN, multiple serial interfaces, 8-channel 10-bit ADC
Connectivity includes CANbus, I²C, IrDA, Microwire, SPI, SSI, and UART/USART — the CAN 2.0B controller with message filtering is the main draw for industrial fieldbus nodes. The 8-channel 10-bit A/D converter samples at rates adequate for slow-loop sensor feedback, not high-speed acquisition.
Industrial temperature grade, internal oscillator
Operating temperature range covers -40°C to 85°C (TA) — this is the industrial band, suitable for factory-floor controllers, HVAC, and outdoor telecom enclosures that see thermal cycling. The internal oscillator eliminates an external crystal for the core clock, though the CAN and USB timing may still need an external resonator for bit-rate accuracy.