The maximum clock frequency of the LM3S608 is 50 MHz.
The LM3S608 has 256 KB of flash memory.
Yes, the LM3S608 is rated for industrial temperature ranges (-40°C to 85°C).
No, the LM3S608 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 LM3S608 varies depending on the clock frequency and operating mode. In active mode, the typical current consumption is around 35 mA at 50 MHz. In sleep mode, the typical current consumption is around 1.5 mA.