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| # | Part: | Description: | Manuf. | Package | Pins | T°min | T°max | PDF size |
| 1. |  80C51RA | 8-bit CMOS (low voltage, low power and high speed) microcontroller families | NXP Semiconductors | PHILIPS | - | - | - | 394 Kb |
| 2. | 80C51RA | 8-bit CMOS (low voltage, low power and high speed) microcontroller families | NXP Semiconductors | PHILIPS | - | - | - | 394 Kb |
| 3. | 80C51RA+ | 80C51 8-bit microcontroller family 8K-4K/256-1K OTP/ROM/ROMless, low voltage (2.7V-5.5V), low power, high speed (33 MHz) | NXP Semiconductors | PHILIPS | - | - | - | 389 Kb |
| 4. | P80C51RA+4A | 8-bit CMOS (low voltage, low power and high speed) microcontroller families | NXP Semiconductors | PHILIPS | - | - | - | 394 Kb |
| 5. | P80C51RA+4B | 8-bit CMOS (low voltage, low power and high speed) microcontroller families | NXP Semiconductors | PHILIPS | - | - | - | 394 Kb |
| 6. | P80C51RA+4N | 8-bit CMOS (low voltage, low power and high speed) microcontroller families | NXP Semiconductors | PHILIPS | - | - | - | 394 Kb |
| 7. | P80C51RA+5A | 8-bit CMOS (low voltage, low power and high speed) microcontroller families | NXP Semiconductors | PHILIPS | - | - | - | 394 Kb |
| 8. | P80C51RA+5B | 8-bit CMOS (low voltage, low power and high speed) microcontroller families | NXP Semiconductors | PHILIPS | - | - | - | 394 Kb |
| 9. | P80C51RA+5N | 8-bit CMOS (low voltage, low power and high speed) microcontroller families | NXP Semiconductors | PHILIPS | - | - | - | 394 Kb |
| 10. | P80C51RA+IA | 8-bit CMOS (low voltage, low power and high speed) microcontroller families | NXP Semiconductors | PHILIPS | - | - | - | 394 Kb |
| 11. | P80C51RA+IB | 8-bit CMOS (low voltage, low power and high speed) microcontroller families | NXP Semiconductors | PHILIPS | - | - | - | 394 Kb |
| 12. | P80C51RA+IN | 8-bit CMOS (low voltage, low power and high speed) microcontroller families | NXP Semiconductors | PHILIPS | - | - | - | 394 Kb |
| 13. | P80C51RA+JA | 8-bit CMOS (low voltage, low power and high speed) microcontroller families | NXP Semiconductors | PHILIPS | - | - | - | 394 Kb |
| 14. | P80C51RA+JB | 8-bit CMOS (low voltage, low power and high speed) microcontroller families | NXP Semiconductors | PHILIPS | - | - | - | 394 Kb |
| 15. | P80C51RA+JN | 8-bit CMOS (low voltage, low power and high speed) microcontroller families | NXP Semiconductors | PHILIPS | - | - | - | 394 Kb |
| 16. | AT80C51RA2 | High Performance 8-bit Microcontroller | International Rectifier | IRF | - | - | - | 810 Kb |
| 17. | AT80C51RA2 | High Performance 8-bit Microcontroller | ATMEL Corporation | ATMEL | - | - | - | 830 Kb |
| 18. | TS80C51RA2 | High Performance 8-bit Microcontrollers | ATMEL Corporation | ATMEL | - | - | - | 495 Kb |
| 19. | TS80C51RA2 | High Performance 8-bit Microcontroller | International Rectifier | IRF | - | - | - | 810 Kb |
| 20. | TS80C51RA2 | High Performance 8-bit Microcontroller | ATMEL Corporation | ATMEL | - | - | - | 673 Kb |
| 21. | TS80C51RA2 | High Performance 8-bit Microcontroller | ATMEL Corporation | ATMEL | - | - | - | 830 Kb |
