Hi , basic question -- for the carvel analog project , is it possible to have multiple supply voltages ? I would need external 2.5V , 2.4V , 1.7V and 2.6V . How many external voltages are supported ? THanks

There are four basic supplies, two 1.8V (vccd1 and vccd2) and two 3.3V (or 5V) (vdda1 and vdda2). You can also use the three analog pads that have clamps under them for additional 3.3V-level power supplies. The 3.3V supplies should also be good for your ~2.5V supply needs.