Service interrupt during DFlash erase on 56F805 and 56F8345

Hi,
I want to know if it's possible to continue to service interrupt during
page erase or word program on Data Flash.

I have a periodical timer interrupt (about 150 us) that stop when I erase a page
of Data Flash. As I read in the DSP user's manual, it takes 40ms to do a
page erase and I can't let the interrupt disable for that long.

Thanks
Bruno