| PartNumber | ATXMEGA128B1-AUR | ATXMEGA128B1-AU | ATXMEGA128B1-ANR |
| Description | 8-bit Microcontrollers - MCU 100TQFP INDTEMP,GRN 1.6-3.6V,T&R | 8-bit Microcontrollers - MCU 8/16-bit AVR MCU | 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 |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | TQFP-100 | TQFP-100 | - |
| Series | XMEGA B1 | XMEGA B1 | XMEGA B1 |
| 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 | - |
| Operating Supply Voltage | 1.6 V to 3.6 V | 1.6 V to 3.6 V | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Packaging | Reel | Tray | Reel |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | Microchip Technology / Atmel |
| Moisture Sensitive | Yes | Yes | - |
| Processor Series | AVR XMEGA | AVR XMEGA | - |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| Factory Pack Quantity | 1000 | 90 | 1000 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
| Tradename | XMEGA | XMEGA | XMEGA |
| Unit Weight | 0.023175 oz | 0.023175 oz | - |
| RoHS | - | Y | Y |
| Number of I/Os | - | 53 I/O | - |
| Product | - | MCU | - |
| Data ROM Size | - | 2 kB | - |
| Number of Timers/Counters | - | 3 Timer | - |