| Manufacturer | Part # | Datasheet | Description |

ATMEL Corporation
|
T87C5101 |
679Kb/58P |
80C51 Code Compatible |
| AT89C5115 |
1Mb/113P |
Full Duplex UART Compatible 80C51 |
| T89C5115 |
343Kb/30P |
80C51 Microcontrollers |

Freescale Semiconductor...
|
MC68020RC25E |
1Mb/306P |
Object-Code Compatible with Earlier M68000 Microprocessors |

ATMEL Corporation
|
AT89C51AC2 |
324Kb/29P |
80C51 Microcontrollers |
| AT83C51RB2 |
72Kb/4P |
80C51 MCUs |
| T89C51CC01UA |
136Kb/8P |
80C51 MCUs |

NXP Semiconductors
|
8XC552 |
382Kb/60P |
80C51 FAMILY DERIVATIVES 1996 Aug 06 |
| P83CX80 |
422Kb/84P |
80C51 type core 1997 Dec 12 |
| P87C552SFAA |
341Kb/74P |
80C51 8-bit microcontroller 2003 Apr 01 |
| P87C51RA2 |
417Kb/67P |
80C51 Central Processing Unit 2003 Jan 24 |

Seiko Instruments Inc
|
S-2934A |
647Kb/16P |
CMOS 4K- bit serial E2PROM Compatible with NMC93C66, NS code |

Megawin Technology Co.,...
|
MG87FX52YE |
1Mb/48P |
80C51 Central Processing Unit |

NXP Semiconductors
|
P8XCX70 |
268Kb/80P |
Fully static 80C51 CPU 1999 Jun 11 |
| P8XCX66 |
383Kb/92P |
80C51 8-bit CPU 1999 Mar 10 |
| P89C51RC |
287Kb/50P |
80C51 Central Processing Unit 1999 Oct 27 |
| P87CL52X2 |
301Kb/47P |
80C51 8-bit microcontroller family 2003 May 14 |
| P83C660X2 |
574Kb/102P |
80C51 8-bit microcontroller family 2003 Oct 02 |
| P8XCE560 |
442Kb/84P |
80C51 Central Processing Unit (CPU) 1997 Aug 01 |
| P89C51RB2HXX |
314Kb/56P |
80C51 8-bit Flash microcontroller family 2002 May 24 |