| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ATMEGA328P-MU | ATMEL CORP | AVR | 8-Bit | 20MHz | I²C, SPI, UART/USART | 23 | 32KB (16K x 16) | FLASH | 1K x 8 | 2K x 8 | 1.8 V ~ 5.5 V | A/D 8x10b | Internal | -40°C ~ 85°C | 32-VFQFN Exposed Pad | |
| ATMEGA328P-MN | ATMEL CORP | AVR | 8-Bit | 20MHz | I²C, SPI, UART/USART | 23 | 32KB (16K x 16) | FLASH | 1K x 8 | 2K x 8 | 1.8 V ~ 5.5 V | A/D 8x10b | Internal | -40°C ~ 105°C | 32-VFQFN Exposed Pad | |
| ATMEGA32U2-MU | ATMEL CORP | AVR | 8-Bit | 16MHz | SPI, UART/USART, USB | 22 | 32KB (16K x 16) | FLASH | 1K x 8 | 1K x 8 | 2.7 V ~ 5.5 V | - | Internal | -40°C ~ 85°C | 32-VFQFN Exposed Pad | |
| ATXMEGA32E5-MU | ATMEL CORP | AVR | 8/16-Bit | 32MHz | I²C, IrDA, SPI, UART/USART | 26 | 32KB (16K x 16) | FLASH | 1K x 8 | 4K x 8 | 1.6 V ~ 3.6 V | A/D 16x12b, D/A 2x12b | Internal | -40°C ~ 85°C | 32-VFQFN Exposed Pad | |
| ATMEGA32M1-MU | ATMEL CORP | AVR | 8-Bit | 16MHz | CAN, LIN, SPI, UART/USART | - | 32KB (16K x 16) | FLASH | 1K x 8 | 2K x 8 | 2.7 V ~ 5.5 V | A/D 11x10b; D/A 1x10b | Internal | -40°C ~ 85°C | 32-VFQFN Exposed Pad | |
| ATXMEGA32E5-MUR | ATMEL CORP | AVR | 8/16-Bit | 32MHz | I²C, IrDA, SPI, UART/USART | 26 | 32KB (16K x 16) | FLASH | 1K x 8 | 4K x 8 | 1.6 V ~ 3.6 V | A/D 16x12b, D/A 2x12b | Internal | -40°C ~ 85°C | 32-VFQFN Exposed Pad | |
| ATMEGA328-MUR | ATMEL CORP | AVR | 8-Bit | 20MHz | I²C, SPI, UART/USART | 23 | 32KB (16K x 16) | FLASH | 1K x 8 | 2K x 8 | 1.8 V ~ 5.5 V | A/D 8x10b | Internal | -40°C ~ 85°C | 32-VFQFN Exposed Pad | |
| ATMEGA328P-15MZ | ATMEL CORP | AVR | 8-Bit | 16MHz | I²C, SPI, UART/USART | 23 | 32KB (16K x 16) | FLASH | 1K x 8 | 2K x 8 | 2.7 V ~ 5.5 V | A/D 8x10b | Internal | -40°C ~ 125°C | 32-VFQFN Exposed Pad | |
| ATMEGA328-MU | ATMEL CORP | AVR | 8-Bit | 20MHz | I²C, SPI, UART/USART | 23 | 32KB (16K x 16) | FLASH | 1K x 8 | 2K x 8 | 1.8 V ~ 5.5 V | A/D 8x10b | Internal | -40°C ~ 85°C | 32-VFQFN Exposed Pad | |
| ATMEGA32U2-MUR | ATMEL CORP | AVR | 8-Bit | 16MHz | SPI, UART/USART, USB | 22 | 32KB (16K x 16) | FLASH | 1K x 8 | 1K x 8 | 2.7 V ~ 5.5 V | - | Internal | -40°C ~ 85°C | 32-VFQFN Exposed Pad |
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