Obsolete — sourcing through independent channels
The LM3S9790-IQC80-C5T is officially obsolete per the manufacturer's product status. No last-time-buy window remains open. For any BOM line that still calls this order code, supply runs through the independent surplus and broker channel. The part is sourced and quoted to order against an RFQ; availability and current pricing are confirmed at quote time.
80 MHz core — what it means for the BOM
The 80 MHz core speed places this MCU in the mid-range Cortex-M3 performance band — fast enough to handle a real-time control loop with Ethernet stack and CAN messaging simultaneously, without needing an external protocol coprocessor. For designs that require deterministic response under interrupt load, the 80 MHz clock and the DMA controller (listed among peripherals) keep bus contention manageable.
Connectivity and I/O
Ethernet support is built in — no external PHY needed. The part also integrates CAN, USB OTG, and multiple serial interfaces (UART, I²C, SPI, SSI, Microwire, IrDA, LIN). With 60 general-purpose I/O lines and an external bus interface, the LM3S9790 can drive a parallel LCD or SRAM expansion directly. The 100-pin LQFP package (14x14 mm body) is a standard footprint for this I/O count; board layout should account for the fine-pitch routing to the EBI and Ethernet differential pairs.
Supply voltage and power management
The core supply range is 1.235 V to 1.365 V. Brown-out detect and POR are on-chip.