STC89C51RC-40C-PQF
STC89C51RC-40C-PQFP
STC89C51RC40C-PQFP
STC89C51RC-40C-PQFP44
STC89C51RC-40I-LQFP44
STC89C51RC-40I-LQFP44G
STC89C51RC-40I-PDI
STC89C51RC-40I-PDIP
STC89C51RC-40I-PDIP40
STC89C51RC-40I-PLCC