Memory and peripheral headroom for gateway designs
The LM3S9792-IBZ80-C5: The 65 GPIOs, combined with the external bus interface (EBI/EMI), allow expansion to external memory or FPGAs. The 16-channel 10-bit ADC provides enough analog front-end for current sensing or temperature monitoring in a three-phase motor drive.
108-BGA footprint and layout considerations
The core supply is a narrow 1.235 V to 1.365 V rail, which typically comes from an external LDO or switching regulator. Decoupling should follow the reference design: a 10 µF ceramic bulk cap plus 100 nF per supply pin pair, placed as close to the balls as the layout allows. The industrial temperature range means the board must handle -40°C startup without crystal oscillator reliability issues.
Obsolete — sourcing for sustainment programs
No direct pin-compatible replacement has been announced within the Stellaris family; the Stellaris line was transitioned to the Tiva C Series, which uses different package and peripheral mappings. Buyers should confirm date code availability and consider last-time-buy quantities for long-term sustainment.