Content originally posted in LPCWare by starblue on Wed Jun 26 01:00:09 MST 2013It is just an ordinary LPC1114, see the ordering information in the data sheet or user manual.
The F specifies temperature range, in other series (e.g. LPC43xx) there may also be a J there for a wider range. Normally you would only write it together with the part specifying the package, i.e. LPC1114FBD48/301.
BTW, I dislike that some of the LPC11xx series are distinguished only by the /nnn suffix, that makes them hard to search for. A common prefix for each series would be much better.