What does the "A" signify in the Kinetis MCU part number? Specifically, MK22FN1M0AVLL12 vs. MK22FN1M0VLL12

[kevinpenn]

I can't find any consistencies between technical data sheets and reference manuals. Data sheets say one is QFP and one is LQFP.  Reference manuals say both are LQFP. Digi Key says one is QFP and one is LQFP.  Mouser and Newark say the opposite is QFP and the other is LQFP.

[isaacavila]

Hello Kevin,

In this case, A refers to Silicon Revision (A = After main) and LL refers to package identifier (LL = 100 LQFP (14 mm x 14 mm)).

You can consult this information on K22 Family Product Bried document located at:

http://cache.freescale.com/files/microcontrollers/doc/prod_brief/K22FPB.pdf

Regards,

Isaac Avila