| Products | Microcontrollers | 80C51 |
80C51 MCUs
Products
Parametric Filter (74)
| RAM | ≥128B (73) ≥256B (67) ≥512B (45) ≥768B (19) ≥1KB (19) ≥2KB (6) ≥3KB (2) | Don't Care |
| Code Memory | ≥1KB (62) ≥2KB (62) ≥4KB (62) ≥8KB (58) ≥16KB (47) ≥32KB (27) ≥64KB (13) ROMless (12) | Don't Care |
| Code Mem Type | OTP (27) Flash (26) External (12) ROM (9) | Don't Care |
EEPROM (KB)  | None (74) | Don't Care |
| GP Timers | 0 (1) 1 (5) 2 (30) 3 (33) 4 (5) | Don't Care |
| Special Timers | WD (48) RTC (21) None (26) | Don't Care |
| Motor PWM | None (74) | Don't Care |
| Quadrature | No (74) | Don't Care |
| Standard PWM | 0 (25) 2 (10) 5 (39) | Don't Care |
| UART Interface(s) | 1 (72) 2 (2) | Don't Care |
| I2C Interface(s) | 0 (55) 1 (16) 2 (3) | Don't Care |
| CAN Interface(s) | 0 (70) 1 (3) 2 (1) | Don't Care |
| SPI Interface(s) | 0 (60) 1 (14) | Don't Care |
| USB Interface(s) | None (74) | Don't Care |
| ADC Channel(s) | ≥2 (10) ≥4 (10) ≥8 (7) None (64) | Don't Care |
| DAC Channel(s) | None (74) | Don't Care |
| ADC/DAC Resolution | 10-Bits (10) | Don't Care |
| I/O Pins | 20-40 (65) ≥40 (9) | Don't Care |
| Program Security | Available (62) None (12) | Don't Care |
| Clocks/Instruction | 6 (44) 12 (30) | Don't Care |
| Max Clock (MHz) | 12 (1) 16 (7) 24 (6) 33 (51) 40 (9) | Don't Care |
| Ext Interrupts | ≥1 (74) ≥2 (74) ≥3 (10) ≥4 (10) ≥5 (10) ≥6 (10) | Don't Care |
| Ext Bus Interface | Yes (73) No (1) | Don't Care |
| Package | PLCC (69) DIL (46) QFP (29) LQFP (28) TQFP (12) TSSOP (1) | Don't Care |
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