| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ATTINY40-SU | ATMEL CORP | AVR | 8-Bit | 12MHz | I²C, SPI | 18 | 4KB (2K x 16) | FLASH | - | 256 x 8 | 1.8 V ~ 5.5 V | A/D 12x10b | Internal | -40°C ~ 85°C | 20-SOIC (0.295, 7.50mm Width) | |
| 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 | |
| ATTINY441-SSU | ATMEL CORP | AVR | 8-Bit | 16MHz | I²C, SPI, UART/USART | 12 | 4KB (4K x 8) | FLASH | 256 x 8 | 256 x 8 | 1.7 V ~ 5.5 V | A/D 12x10b | Internal | -40°C ~ 85°C | 14-SOIC (0.154, 3.90mm Width) | |
| ATTINY441-MU | ATMEL CORP | AVR | 8-Bit | 16MHz | I²C, SPI, UART/USART | 12 | 4KB (4K x 8) | FLASH | 256 x 8 | 256 x 8 | 1.7 V ~ 5.5 V | A/D 12x10b | Internal | -40°C ~ 85°C | 20-WFQFN Exposed Pad | |
| ATTINY841-SSU | ATMEL CORP | AVR | 8-Bit | 16MHz | I²C, SPI, UART/USART | 12 | 8KB (8K x 8) | FLASH | 512 x 8 | 512 x 8 | 1.7 V ~ 5.5 V | A/D 12x10b | Internal | -40°C ~ 85°C | 14-SOIC (0.154, 3.90mm Width) | |
| ATTINY441-MMH | ATMEL CORP | AVR | 8-Bit | 16MHz | I²C, SPI, UART/USART | 12 | 4KB (4K x 8) | FLASH | 256 x 8 | 256 x 8 | 1.7 V ~ 5.5 V | A/D 12x10b | Internal | -40°C ~ 85°C | 20-VFQFN Exposed Pad | |
| ATTINY841-MMH | ATMEL CORP | AVR | 8-Bit | 16MHz | I²C, SPI, UART/USART | 12 | 8KB (8K x 8) | FLASH | 512 x 8 | 512 x 8 | 1.7 V ~ 5.5 V | A/D 12x10b | Internal | -40°C ~ 85°C | 20-VFQFN Exposed Pad | |
| 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 | |
| ATTINY40-SUR | ATMEL CORP | AVR | 8-Bit | 12MHz | I²C, SPI | 18 | 4KB (2K x 16) | FLASH | - | 256 x 8 | 1.8 V ~ 5.5 V | A/D 12x10b | Internal | -40°C ~ 85°C | 20-SOIC (0.295, 7.50mm Width) |
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