50 MHz Cortex-M3 with CAN and Ethernet — what this MCU brings to a control board
The Texas Instruments LM3S8938-IQC50-A2T is a 32-bit ARM Cortex-M3 microcontroller from the Stellaris 8000 series, clocked at 50 MHz. It carries 256 KB of Flash program memory and 64 KB of SRAM, with a 10-bit 8-channel ADC on board. The distinguishing feature for this part is the dual industrial networking — CANbus and Ethernet — alongside the usual I²C, SPI, UART/USART, and IrDA interfaces. That combination targets embedded control nodes that need both a fieldbus connection and a higher-level network link, such as a programmable automation controller or a remote I/O gateway. The 38 general-purpose I/O lines and the peripheral set — brown-out detect, POR, PWM, and watchdog timer — cover the basic housekeeping for a standalone controller. The internal oscillator keeps the BOM simple for applications that do not require an external crystal for tight timing.
Industrial temperature grade and package
Rated for -40°C to 85°C ambient. It does not carry extended temperature ratings.