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| PartNumber | AT80C51SND1C-ROTIL | AT80C51SND1C-ROTUL | AT80C51SND1C-UL |
| Description | IC MCU 8BIT ROMLESS 80TQFP | IC MCU 8BIT ROMLESS 80TQFP | |
| Manufacturer | - | Atmel | - |
| Product Category | - | Embedded - Microcontrollers | - |
| Series | - | 80C | - |
| Packaging | - | Tray | - |
| Package Case | - | 80-LQFP | - |
| Operating Temperature | - | -40°C ~ 85°C (TA) | - |
| Supplier Device Package | - | 80-TQFP (14x14) | - |
| Number of I O | - | 44 | - |
| Speed | - | 40MHz | - |
| EEPROM Size | - | - | - |
| Core Processor | - | 80C51 | - |
| RAM Size | - | 2.25K x 8 | - |
| Program Memory Type | - | ROMless | - |
| Peripherals | - | Audio, I2S, MP3, PCM, POR, WDT | - |
| Connectivity | - | I2C, IDE/ATAPI, Memory Card, SPI, UART/USART, USB | - |
| Voltage Supply Vcc Vdd | - | 2.7 V ~ 3.3 V | - |
| Core Size | - | 8-Bit | - |
| Program Memory Size | - | - | - |
| Data Converters | - | A/D 2x10b | - |
| Oscillator Type | - | Internal | - |