Hi,
They are the same. There is only change in a numbering where the mask set is included into a part number as a code F0.
S9G64CF0N75C …. I suppose you have missed “L” and it should be S9G64CLF0N75C. (0N75C is a a mask set 75C of revision 0)
9S12G64F0C? ….. 9S12G64F0CLF, 9S12G64F0CLFR : F0 = Mask set 0N75C; R=Rape&Reel; LF=48 LQFP; C- -40~85deg.C.
There is confusing combination of letters F0.
In the first case it should be understood S9G64CLF 0N75C
In the first case it should be understood S9G64F0CLF
Best regards,
Ladislav