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| S80C42 | Universal peripheral interface CHMOS 8-bit slave microcontroller. 4K ROM | Intel Corporation | QFP | 44 | 0°C | 70°C | S80C42 datasheet (345K) |
| S80C51BH | CHMOS single-chip 8-bit microcontroller. 3.5 MHz to 12 MHz, Vcc = 5 V | Intel Corporation | QFP | 44 | 0°C | 70°C | S80C51BH datasheet (284K) |
| S80C51BH-1 | CHMOS single-chip 8-bit microcontroller. 3.5 MHz to 16 MHz, Vcc = 5 V | Intel Corporation | QFP | 44 | 0°C | 70°C | S80C51BH-1 datasheet (284K) |
| S80C51BH-2 | CHMOS single-chip 8-bit microcontroller. 0.5 MHz to 12 MHz, Vcc = 5 V | Intel Corporation | QFP | 44 | 0°C | 70°C | S80C51BH-2 datasheet (284K) |
| S80C51BH-24 | CHMOS single-chip 8-bit microcontroller. 3.5 MHz to 24 MHz, Vcc = 5 V | Intel Corporation | QFP | 44 | 0°C | 70°C | S80C51BH-24 datasheet (284K) |
| S80C51BHP | CHMOS single-chip 8-bit microcontroller. 3.5 MHz to 12 MHz, Vcc = 5 V | Intel Corporation | QFP | 44 | 0°C | 70°C | S80C51BHP datasheet (284K) |
| S80C51BHP-1 | CHMOS single-chip 8-bit microcontroller. 3.5 MHz to 16 MHz, Vcc = 5 V | Intel Corporation | QFP | 44 | 0°C | 70°C | S80C51BHP-1 datasheet (284K) |
| S80C51BHP-2 | CHMOS single-chip 8-bit microcontroller. 0.5 MHz to 12 MHz, Vcc = 5 V | Intel Corporation | QFP | 44 | 0°C | 70°C | S80C51BHP-2 datasheet (284K) |
| S80C51BHP-24 | CHMOS single-chip 8-bit microcontroller. 3.5 MHz to 24 MHz, Vcc = 5 V | Intel Corporation | QFP | 44 | 0°C | 70°C | S80C51BHP-24 datasheet (284K) |
| S80C51FA | CHMOS single-chip 8-bit microcontroller. Commercial. ROMless version, 3.5 MHz to 12 MHz. | Intel Corporation | QFP | 44 | 0°C | 70°C | S80C51FA datasheet (259K) |