| 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 | |
| ATMEGA8515-16AU | ATMEL CORP | AVR | 8-Bit | 16MHz | EBI/EMI, SPI, UART/USART | 35 | 8KB (4K x 16) | FLASH | 512 x 8 | 512 x 8 | 4.5 V ~ 5.5 V | - | Internal | -40°C ~ 85°C | 44-TQFP | |
| ATMEGA8535-16AU | ATMEL CORP | AVR | 8-Bit | 16MHz | I²C, SPI, UART/USART | 32 | 8KB (4K x 16) | FLASH | 512 x 8 | 512 x 8 | 4.5 V ~ 5.5 V | A/D 8x10b | Internal | -40°C ~ 85°C | 44-TQFP | |
| AT89LS51-16AU | ATMEL CORP | 8051 | 8-Bit | 16MHz | UART/USART | 32 | 4KB (4K x 8) | FLASH | - | 128 x 8 | 2.7 V ~ 4 V | - | 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 | |
| ATMEGA16-16AQ | ATMEL CORP | AVR | 8-Bit | 16MHz | I²C, SPI, UART/USART | 32 | 16KB (8K x 16) | FLASH | 512 x 8 | 1K x 8 | 4.5 V ~ 5.5 V | A/D 8x10b | Internal | -40°C ~ 105°C | 44-TQFP | |
| ATMEGA32-16AQ | ATMEL CORP | AVR | 8-Bit | 16MHz | I²C, SPI, UART/USART | 32 | 32KB (16K x 16) | FLASH | 1K x 8 | 2K x 8 | 4.5 V ~ 5.5 V | A/D 8x10b | Internal | -40°C ~ 105°C | 44-TQFP | |
| ATMEGA8515-16AUR | ATMEL CORP | AVR | 8-Bit | 16MHz | EBI/EMI, SPI, UART/USART | 35 | 8KB (4K x 16) | FLASH | 512 x 8 | 512 x 8 | 4.5 V ~ 5.5 V | - | Internal | -40°C ~ 85°C | 44-TQFP | |
| ATMEGA8535-16AUR | ATMEL CORP | AVR | 8-Bit | 16MHz | I²C, SPI, UART/USART | 32 | 8KB (4K x 16) | FLASH | 512 x 8 | 512 x 8 | 4.5 V ~ 5.5 V | A/D 8x10b | Internal | -40°C ~ 85°C | 44-TQFP |
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