Altera N87C51RC1

Altera EE87C51RC24

Intel TS80C51RA1

Intel TS80C51RA24

Intel S80C51RA24

Altera S87C51RC1

Altera D87C51FA24

Altera S87C511

Honeywell Aerospace HT83C51

Altera S87C51FB33SF76

Altera S87C51FB24SF76

Altera S87C51RA24

Altera TS87C51RA1

Altera TS87C51RA24

Altera S87C51FA24SF76

Altera S87C5424SF76

Altera S87C51RB1

Intel N87C5833SF76

Altera S87C51FC1SF76