87C51FA-4A Integrated Circuit - Standard Case - NXP Semiconductors

87C51FB4N40 Integrated Circuit - Standard Case - NXP Semiconductors

87C52SBAA Integrated Circuit - Standard Case - NXP Semiconductors

87C51CCA44 Integrated Circuit - Standard Case - NXP Semiconductors

87C51CCF40 Integrated Circuit - Standard Case - NXP Semiconductors

87C51ACA44 Integrated Circuit - Standard Case - NXP Semiconductors

87C52EBAA Integrated Circuit - Standard Case - NXP Semiconductors

87C51UBAA Integrated Circuit - Standard Case - NXP Semiconductors