AT89C51RC2-IL
AT89C51RC2-IM
AT89C51RC2RIL
AT89C51RC2RIM
AT89C51RC2-RLRIL
AT89C51RC2-RLRIM
AT89C51RC2-RLRUL
AT89C51RC2-RLRUM
AT89C51RC2-RLTIL
AT89C51RC2-RLTIM