| Part Numbers | Manufacturer Name | Datasheet | Core Processor | Core Size | Speed | Connectivity | RAM Size | Number of I/O | Program Memory Size | Program Memory Type | EEPROM Size | Voltage - Supply (Vcc/Vdd) | Data Converters | Oscillator Type | Operating Temperature | Package / Case |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| N80C251TQ24 | INTEL CORP | MCS 251 | 8-Bit | 24MHz | SIO | 32 | - | ROMless | - | 512 x 8 | 4.5 V ~ 5.5 V | - | External | 0°C ~ 70°C | 44-LCC (J-Lead) | |
| P80C251TQ24 | INTEL CORP | MCS 251 | 8-Bit | 24MHz | SIO | 32 | - | ROMless | - | 512 x 8 | 4.5 V ~ 5.5 V | - | External | 0°C ~ 70°C | 40-DIP | |
| P80C251TB24 | INTEL CORP | MCS 251 | 8-Bit | 24MHz | SIO | 32 | - | ROMless | - | 1K x 8 | 4.5 V ~ 5.5 V | - | External | 0°C ~ 70°C | 40-DIP | |
| N80C251TB24 | INTEL CORP | MCS 251 | 8-Bit | 24MHz | SIO | 32 | - | ROMless | - | 1K x 8 | 4.5 V ~ 5.5 V | - | External | 0°C ~ 70°C | 44-LCC (J-Lead) | |
| N80C251SQ16 | INTEL CORP | MCS 251 | 8-Bit | 16MHz | SIO | 32 | - | ROMless | - | 512 x 8 | 4.5 V ~ 5.5 V | - | External | 0°C ~ 70°C | 44-LCC (J-Lead) | |
| P80C251SQ16 | INTEL CORP | MCS 251 | 8-Bit | 16MHz | SIO | 32 | - | ROMless | - | 512 x 8 | 4.5 V ~ 5.5 V | - | External | 0°C ~ 70°C | 40-DIP | |
| P80C251SB16 | INTEL CORP | MCS 251 | 8-Bit | 16MHz | SIO | 32 | - | ROMless | - | 1K x 8 | 4.5 V ~ 5.5 V | - | External | 0°C ~ 70°C | 40-DIP | |
| N80C251SB16SF87 | INTEL CORP | MCS 251 | 8-Bit | 16MHz | SIO | 32 | - | ROMless | - | 1K x 8 | 4.5 V ~ 5.5 V | - | External | 0°C ~ 70°C | 44-LCC (J-Lead) | |
| N87C251SP16 | INTEL CORP | MCS 251 | 8-Bit | 16MHz | SIO | 32 | 8KB (8K x 8) | OTP | - | 512 x 8 | 4.5 V ~ 5.5 V | - | External | 0°C ~ 70°C | 44-LCC (J-Lead) | |
| P87C251SP16 | INTEL CORP | MCS 251 | 8-Bit | 16MHz | SIO | 32 | 8KB (8K x 8) | OTP | - | 512 x 8 | 4.5 V ~ 5.5 V | - | External | 0°C ~ 70°C | 40-DIP |
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