What this Stellaris MCU brings to an industrial control board
The LM3S8530-IQC50-A2T is a 32-bit ARM Cortex-M3 MCU from the Stellaris 8000 series, clocked at 50 MHz with 96 KB Flash and 64 KB RAM. It integrates Ethernet MAC, CAN, I²C, SPI, SSI, UART/USART, and Microwire. The 64 KB RAM is notably generous for a Cortex-M3 in this Flash class; it can hold a moderate Ethernet TCP/IP stack plus a CANopen object dictionary without tight buffer management. The 35 I/O lines in a 100-LQFP package leave room for a parallel LCD interface or a bank of opto-isolated inputs alongside the serial channels.
Industrial temperature range and supply
Rated for -40°C to 85°C ambient. The core logic runs from 2.25 V to 2.75 V.
Sourcing reality — obsolete, no direct replacement listed
Texas Instruments has marked the LM3S8530-IQC50-A2T as obsolete. No official successor order code appears in the lifecycle record. For a BOM line that depends on this exact MCU, the procurement path is through independent distribution — quoted to order against an RFQ, with availability and current pricing confirmed at quote time. If the design is still in development, consider migrating to a currently active Stellaris or Tiva-C family part; a pin-compatible drop-in is not guaranteed, but the peripheral set (Ethernet + CAN) is common across the Stellaris line.