Device    Package       Core    I/O     Usage   +hamm  f,MHz    Pro's and co's
A42MX09   100 PQFP      3.3V    3.3V    20%     42%     9       single supply (+)  online prototype (+)
A54SX08   100 VQFP      3.3V    3.3V    18%     34%    44       single supply (+)  better for other designs (+)
A54SX08A  100 TQFP      2.5V    3.3V    18%     34%    24       dual supply   (-)  online prototype (+)
eX256     100 TQFP      2.5V    3.3V    18%     34%    28       dual supply   (-)  online prototype (+)
A40MX04   100 PQFP      3.3V    3.3V    66%     -      -        too small     (-)  online prototype (+)