| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| P87C42 | INTEL CORP | MCS 51 | 8-Bit | 12MHz | UPI | 18 | 4KB (4K x 8) | OTP | - | 256 x 8 | 4.5 V ~ 5.5 V | - | External | 0°C ~ 70°C | 40-DIP | |
| N87C42 | INTEL CORP | MCS 51 | 8-Bit | 12MHz | UPI | 18 | 4KB (4K x 8) | OTP | - | 256 x 8 | 4.5 V ~ 5.5 V | - | External | 0°C ~ 70°C | 44-LCC (J-Lead) | |
| S87C42 | INTEL CORP | MCS 51 | 8-Bit | 12MHz | UPI | 18 | 4KB (4K x 8) | OTP | - | 256 x 8 | 4.5 V ~ 5.5 V | - | External | 0°C ~ 70°C | 44-QFP | |
| EE87C42 | INTEL CORP | MCS 51 | 8-Bit | 12MHz | UPI | 18 | 4KB (4K x 8) | OTP | - | 256 x 8 | 4.5 V ~ 5.5 V | - | External | -40°C ~ 85°C | 44-LCC (J-Lead) | |
| EG87C42 | INTEL CORP | MCS 51 | 8-Bit | 12MHz | UPI | 18 | 4KB (4K x 8) | OTP | - | 256 x 8 | 4.5 V ~ 5.5 V | - | External | -40°C ~ 85°C | 44-QFP | |
| UJ87C42 | INTEL CORP | MCS 51 | 8-Bit | 12MHz | UPI | 18 | 4KB (4K x 8) | OTP | - | 256 x 8 | 4.5 V ~ 5.5 V | - | External | 0°C ~ 70°C | 40-DIP |
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