Lpc2000

We're working with several prototype boards.  Because of a layout error,
we have a jumper on the linear regulator circuit.  On 2 boards, the
jumper broke free and 1.8V was driven to the LPC2106 without 3.3V.  On
one of these board, the LPC2106 seems to have died (no oscillation); on
the other, it's still working.

My question: does supplying 1.8V to an LPC2106 without 3.3V damage or
destroy the part?  We're trying to figure out whether we need to replace
the LPC2106 on the second board.

Thanks.