The maximum clock frequency of the LM3S817 is 50 MHz.
The LM3S817 has 256 KB of flash memory.
Yes, the LM3S817 is rated for industrial temperature ranges (-40°C to 85°C).
No, the LM3S817 does not have built-in Ethernet capability. However, it does have a 10/100 Ethernet MAC interface that can be used with an external PHY chip.
The power consumption of the LM3S817 varies depending on the clock frequency and operating mode. In active mode, the typical current consumption is around 50 mA at 50 MHz. In sleep mode, the typical current consumption is around 1.5 mA.