| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ATMEGA16U4-AUR | ATMEL CORP | AVR | 8-Bit | 16MHz | I²C, SPI, UART/USART, USB | 26 | 16KB (8K x 16) | FLASH | 512 x 8 | 1.25K x 8 | 2.7 V ~ 5.5 V | A/D 12x10b | Internal | -40°C ~ 85°C | 44-TQFP | |
| ATMEGA32U4-AUR | ATMEL CORP | AVR | 8-Bit | 16MHz | I²C, SPI, UART/USART, USB | 26 | 32KB (16K x 16) | FLASH | 1K x 8 | 2.5K x 8 | 2.7 V ~ 5.5 V | A/D 12x10b | Internal | -40°C ~ 85°C | 44-TQFP | |
| ATMEGA16U4-AU | ATMEL CORP | AVR | 8-Bit | 16MHz | I²C, SPI, UART/USART, USB | 26 | 16KB (8K x 16) | FLASH | 512 x 8 | 1.25K x 8 | 2.7 V ~ 5.5 V | A/D 12x10b | Internal | -40°C ~ 85°C | 44-TQFP | |
| ATUC64D4-AUT | ATMEL CORP | AVR | 32-Bit | 48MHz | I²C, SPI, UART/USART, USB | 35 | 64KB (64K x 8) | FLASH | - | 16K x 8 | 1.65 V ~ 3.6 V | A/D 6x10b | Internal | -40°C ~ 85°C | 48-TQFP | |
| ATUC64D4-Z1UT | ATMEL CORP | AVR | 32-Bit | 48MHz | I²C, SPI, UART/USART, USB | 35 | 64KB (64K x 8) | FLASH | - | 16K x 8 | 1.65 V ~ 3.6 V | A/D 6x10b | Internal | -40°C ~ 85°C | 48-VFQFN Exposed Pad | |
| ATUC64D3-Z2UT | ATMEL CORP | AVR | 32-Bit | 48MHz | I²C, SPI, UART/USART, USB | 51 | 64KB (64K x 8) | FLASH | - | 16K x 8 | 1.65 V ~ 3.6 V | A/D 8x10b | Internal | -40°C ~ 85°C | 64-VFQFN Exposed Pad | |
| ATUC64D3-A2UT | ATMEL CORP | AVR | 32-Bit | 48MHz | I²C, SPI, UART/USART, USB | 51 | 64KB (64K x 8) | FLASH | - | 16K x 8 | 1.65 V ~ 3.6 V | A/D 8x10b | Internal | -40°C ~ 85°C | 64-TQFP | |
| AT89C5130A-PUTUM | ATMEL CORP | 80C51 | 8-Bit | 48MHz | I²C, SPI, UART/USART, USB | 18 | 16KB (16K x 8) | FLASH | 4K x 8 | 1.25K x 8 | 2.7 V ~ 5.5 V | - | Internal | -40°C ~ 85°C | 32-VQFN Exposed Pad | |
| ATUC128D4-Z1UT | ATMEL CORP | AVR | 32-Bit | 48MHz | I²C, SPI, UART/USART, USB | 35 | 128KB (128K x 8) | FLASH | - | 16K x 8 | 1.65 V ~ 3.6 V | A/D 6x10b | Internal | -40°C ~ 85°C | 48-VFQFN Exposed Pad | |
| ATUC128D4-AUT | ATMEL CORP | AVR | 32-Bit | 48MHz | I²C, SPI, UART/USART, USB | 35 | 128KB (128K x 8) | FLASH | - | 16K x 8 | 1.65 V ~ 3.6 V | A/D 6x10b | Internal | -40°C ~ 85°C | 48-TQFP |
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