| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AT80C51SND1C-ROTIL | ATMEL CORP | 80C51 | 8-Bit | 40MHz | I²C, IDE/ATAPI, Memory Card, SPI, UART/USART, USB | 44 | - | ROMless | - | 2.25K x 8 | 2.7 V ~ 3.3 V | A/D 2x10b | Internal | -40°C ~ 85°C | 80-LQFP | |
| AT89C51SND2C-7FTUL | ATMEL CORP | 80C51 | 8-Bit | 40MHz | I²C, IDE/ATAPI, Memory Card, SPI, UART/USART, USB | 32 | 64KB (64K x 8) | FLASH | - | 2.25K x 8 | 2.7 V ~ 3.3 V | - | Internal | -40°C ~ 85°C | 100-TFBGA | |
| AT89C51SND1C-ROTUL | ATMEL CORP | 80C51 | 8-Bit | 40MHz | I²C, IDE/ATAPI, Memory Card, SPI, UART/USART, USB | 44 | 64KB (64K x 8) | FLASH | - | 2.25K x 8 | 2.7 V ~ 3.3 V | A/D 2x10b | External | -40°C ~ 85°C | 80-LQFP | |
| AT80C51SND1C-ROTUL | ATMEL CORP | 80C51 | 8-Bit | 40MHz | I²C, IDE/ATAPI, Memory Card, SPI, UART/USART, USB | 44 | - | ROMless | - | 2.25K x 8 | 2.7 V ~ 3.3 V | A/D 2x10b | Internal | -40°C ~ 85°C | 80-LQFP | |
| AT89C51SND1C-7HTUL | ATMEL CORP | 80C51 | 8-Bit | 40MHz | I²C, IDE/ATAPI, Memory Card, SPI, UART/USART, USB | 44 | 64KB (64K x 8) | FLASH | - | 2.25K x 8 | 2.7 V ~ 3.3 V | A/D 2x10b | External | -40°C ~ 85°C | 81-CBGA |
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