The LM3S9DN5-IQC80-A1: It packs 512 KB of Flash and 96 KB of SRAM, giving firmware room for protocol stacks and data buffering without external memory. The peripheral set includes Ethernet MAC+PHY, USB OTG, two CAN 2.0B controllers, plus multiple UART, SPI, I²C, and SSI interfaces — enough connectivity to act as a system controller in an industrial gateway or a motor-drive node.
512 KB Flash, 96 KB SRAM — sizing the firmware and data budget
The 512 KB program memory (Flash) and 96 KB SRAM are well matched for a real-time control application running an RTOS, a TCP/IP stack, and a file system. The 12-bit ADC with 16 channels covers analog sensing — current, voltage, temperature — without an external converter. Brown-out detect and POR keep the core from running on a glitched supply, which matters in an industrial environment with noisy rails.