80 MHz Cortex-M3 with integrated Ethernet and CAN
The Texas Instruments LM3S9B90-IBZ80-C1T is a Stellaris® ARM® Cortex®-M3S 9000 series microcontroller built around a 32-bit ARM Cortex-M3 core running at 80 MHz.
The 96 KB RAM is organized as 96K x 8, which is ample for buffering Ethernet frames or USB packets without external memory. For designs that need to store firmware updates or configuration tables, the Flash is organized as 256K x 8.
Connectivity set: CAN, Ethernet, USB OTG, and more
The LM3S9B90 integrates a CAN controller, a 10/100 Ethernet MAC with integrated PHY, and a USB OTG controller — a combination that is rare in a single MCU at this price tier. This makes the part a natural fit for industrial gateways, protocol converters, and human-machine interfaces that need to bridge fieldbus and Ethernet.
Buyers should expect to work with surplus or broker inventory for this device.