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| PartNumber | TN80C251SB16 | TN80C251SQ16 | TN80C251TB24 |
| Description | MCU 8-bit MCS251 CISC ROMLess 5V 44-Pin PLCC - Bulk (Alt: TN80C251SB16) | ||
| Manufacturer | - | Intel | Intel |
| Product Category | - | Embedded - Microcontrollers | Embedded - Microcontrollers |
| Series | - | 80C | 80C |
| Packaging | - | Tube | Tube |
| Package Case | - | 44-LCC (J-Lead) | 44-LCC (J-Lead) |
| Operating Temperature | - | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Supplier Device Package | - | 44-PLCC | 44-PLCC |
| Number of I O | - | 32 | 32 |
| Speed | - | 16MHz | 24MHz |
| EEPROM Size | - | - | - |
| Core Processor | - | MCS 251 | MCS 251 |
| RAM Size | - | 512 x 8 | 1K x 8 |
| Program Memory Type | - | ROMless | ROMless |
| Peripherals | - | PWM, WDT | PWM, WDT |
| Connectivity | - | SIO | SIO |
| Voltage Supply Vcc Vdd | - | 4.5 V ~ 5.5 V | 4.5 V ~ 5.5 V |
| Core Size | - | 8-Bit | 8-Bit |
| Program Memory Size | - | - | - |
| Data Converters | - | - | - |
| Oscillator Type | - | External | External |