Hi @cynthia_pinto,
The letter M shows the temperature range (-40 °C to 125 °C). You can refer to the S32K data sheet's chapter 3.2 (ordering information):
You can also refer to the spreadsheet attached to the data sheet (S32K1xx_Orderable_Part_Number_List.xlsx) for a list of standard orderable parts:
The row 3 & 4 markings refer to internal coding.
Finally, packaging information should be displayed in the "Buy Options" page: FS32K116LAT0MLFT Product Information | NXP Semiconductors.
Best regards,
Julián
