| PartNumber | ATXMEGA128A4U-AU | ATXMEGA128A4U-AN | ATXMEGA128A4U-ANR |
| Description | 8-bit Microcontrollers - MCU 44TQFP, IND TEMP GREEN, 1.6-3.6V | 8-bit Microcontrollers - MCU TQFP, 105C, Green 1.6-3.6V | 8-bit Microcontrollers - MCU TQFP, 105C, Green 1.6-3.6V T&R |
| Manufacturer | Microchip | Microchip | Microchip |
| Product Category | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| RoHS | Y | Y | Y |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | TQFP-44 | TQFP-44 | - |
| Series | XMEGA A4U | XMEGA A4U | XMEGA A4U |
| Core | AVR | AVR | - |
| Data Bus Width | 8 bit/16 bit | 8 bit/16 bit | - |
| Maximum Clock Frequency | 32 MHz | 32 MHz | - |
| Program Memory Size | 128 kB | 128 kB | - |
| Data RAM Size | 8 kB | 8 kB | - |
| ADC Resolution | 12 bit | 12 bit | - |
| Number of I/Os | 34 I/O | 34 I/O | - |
| Operating Supply Voltage | 1.6 V to 3.6 V | 1.6 V to 3.6 V | - |
| Minimum Operating Temperature | - 40 C | 0 C | - |
| Maximum Operating Temperature | + 85 C | + 105 C | - |
| Packaging | Tray | Tray | Reel |
| Product | MCU | MCU | - |
| Program Memory Type | Flash | Flash | - |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | Microchip Technology / Atmel |
| Data RAM Type | SRAM | SRAM | - |
| Data ROM Size | 2 kB | 2 kB | - |
| Data ROM Type | EEPROM | EEPROM | - |
| Interface Type | I2C, SPI, UART | I2C, SPI, UART | - |
| Moisture Sensitive | Yes | Yes | - |
| Number of ADC Channels | 12 | 12 Channel | - |
| Number of Timers/Counters | 5 Timer | 5 x 16 bit | - |
| Processor Series | AVR XMEGA | AVR XMEGA | - |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| Factory Pack Quantity | 160 | 160 | 1500 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
| Supply Voltage Max | 3.6 V | 3.6 V | - |
| Supply Voltage Min | 1.6 V | 1.6 V | - |
| Tradename | XMEGA | XMEGA | XMEGA |
| Unit Weight | 0.061447 oz | 0.009640 oz | - |
| Analog Supply Voltage | - | 1.6 V to 3.6 V | - |
| DAC Resolution | - | 12 bit | - |
| Watchdog Timers | - | Watchdog Timer | - |