| PartNumber | ATXMEGA128B3-AN | ATXMEGA128B3-ANR | ATXMEGA128B3-AU |
| Description | 8-bit Microcontrollers - MCU TQFP, 105C, Green 1.6-3.6V | 8-bit Microcontrollers - MCU TQFP, 105C, Green 1.6-3.6V T&R | Microcontrollers - MCU 8-bit Microcontrollers - MCU 8/16-bit AVR MCU |
| Manufacturer | Microchip | Microchip | Atmel |
| Product Category | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | Embedded - Microcontrollers |
| RoHS | Y | Y | - |
| Series | XMEGA B3 | XMEGA B3 | AVRR XMEGAR B3 |
| Packaging | Tray | Reel | Tray Alternate Packaging |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | - |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | - |
| Factory Pack Quantity | 90 | 1000 | - |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | - |
| Tradename | XMEGA | XMEGA | XMEGA |
| Product | - | - | MCU |
| Unit Weight | - | - | 0.012720 oz |
| Mounting Style | - | - | SMD/SMT |
| Package Case | - | - | TQFP-64 |
| Operating Temperature | - | - | -40°C ~ 85°C (TA) |
| Supplier Device Package | - | - | 64-TQFP (14x14) |
| Number of I O | - | - | 36 |
| Speed | - | - | 32MHz |
| EEPROM Size | - | - | 2K x 8 |
| Core Processor | - | - | AVR |
| RAM Size | - | - | 8K x 8 |
| Program Memory Type | - | - | FLASH |
| Peripherals | - | - | Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT |
| Connectivity | - | - | I2C, IrDA, SPI, UART/USART, USB |
| Voltage Supply Vcc Vdd | - | - | 1.6 V ~ 3.6 V |
| Core Size | - | - | 8/16-Bit |
| Program Memory Size | - | - | 128KB (128K x 8) |
| Data Converters | - | - | A/D 8x12b |
| Oscillator Type | - | - | Internal |
| Maximum Operating Temperature | - | - | + 85 C |
| Minimum Operating Temperature | - | - | - 40 C |
| Operating Supply Voltage | - | - | 1.6 V to 3.6 V |
| Interface Type | - | - | I2C SPI USART USB |
| Core | - | - | AVR |
| Processor Series | - | - | AVR XMEGA |
| Data Bus Width | - | - | 8 bit |
| Supply Voltage Max | - | - | 3.6 V |
| Supply Voltage Min | - | - | 1.6 V |
| Maximum Clock Frequency | - | - | 32 MHz |
| Analog Supply Voltage | - | - | 1.6 V to 3.6 V |
| Number of ADC Channels | - | - | 8 Channel |
| Number of I Os | - | - | 36 I/O |
| Data RAM Size | - | - | 8 kB |
| Data ROM Size | - | - | 2 kB |
| I O Voltage | - | - | 1.6 V to 3.6 V |
| Number of Timers Counters | - | - | 2 Timer |
| Watchdog Timers | - | - | Watchdog Timer |
| ADC Resolution | - | - | 12 bit |
| Data RAM Type | - | - | SRAM |
| Data ROM Type | - | - | EEPROM |
| DAC Resolution | - | - | - |