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| PartNumber | P80C31X2BN,112 | P80C31X2BA | P80C31X2BN |
| Description | IC MCU 8BIT ROMLESS 40DIP | 8-bit Microcontrollers - MCU 80C51 128B 12/6 CLKS ROMLESS | |
| Manufacturer | - | PHILIPS | NXP Semiconductors |
| Product Category | - | IC Chips | Embedded - Microcontrollers |
| Series | - | - | 80C |
| Packaging | - | - | Tube |
| Package Case | - | - | 40-DIP (0.600", 15.24mm) |
| Operating Temperature | - | - | 0°C ~ 70°C (TA) |
| Supplier Device Package | - | - | 40-DIP |
| Number of I O | - | - | 32 |
| Speed | - | - | 33MHz |
| EEPROM Size | - | - | - |
| Core Processor | - | - | 8051 |
| RAM Size | - | - | 128 x 8 |
| Program Memory Type | - | - | ROMless |
| Peripherals | - | - | POR |
| Connectivity | - | - | EBI/EMI, UART/USART |
| Voltage Supply Vcc Vdd | - | - | 2.7 V ~ 5.5 V |
| Core Size | - | - | 8-Bit |
| Program Memory Size | - | - | - |
| Data Converters | - | - | - |
| Oscillator Type | - | - | Internal |