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| PartNumber | ATXMEGA256A3U-AN | ATXMEGA256A3U-AU | ATXMEGA256A3U-ANR |
| Description | 8-bit Microcontrollers - MCU 64 TQFP, 105C TEMP, GREEN, 1.6-3.6V | 8-bit Microcontrollers - MCU AVR8 256KB FLSH 16KB | 8-bit Microcontrollers - MCU 64 TQFP, 105C TEMP, 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-64 | TQFP-64 | - |
| Series | XMEGA A3U | XMEGA A3U | XMEGA A3U |
| Core | AVR | AVR | - |
| Data Bus Width | 8 bit/16 bit | 8 bit/16 bit | - |
| Maximum Clock Frequency | 32 MHz | 32 MHz | - |
| Program Memory Size | 256 kB | 256 kB | - |
| Data RAM Size | 16 kB | 16 kB | - |
| ADC Resolution | 12 bit | - | - |
| Number of I/Os | 50 I/O | 50 I/O | - |
| 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 | + 105 C | + 85 C | - |
| Packaging | Tray | Tray | Reel |
| Product | MCU | MCU | - |
| Program Memory Type | Flash | - | - |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | Microchip Technology / Atmel |
| Data RAM Type | SRAM | - | - |
| Interface Type | I2C, SMBus, SPI, USART | - | - |
| Analog Supply Voltage | 1.6 V to 3.6 V | - | - |
| DAC Resolution | 12 bit | - | - |
| Moisture Sensitive | Yes | Yes | - |
| Number of ADC Channels | 16 Channel | - | - |
| Number of Timers/Counters | 7 x 16 bit | 7 Timer | - |
| Processor Series | AVR XMEGA | AVR XMEGA | - |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| Factory Pack Quantity | 90 | 90 | 1000 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
| Supply Voltage Max | 3.6 V | - | - |
| Supply Voltage Min | 1.6 V | - | - |
| Tradename | XMEGA | XMEGA | XMEGA |
| Watchdog Timers | Watchdog Timer | - | - |
| Unit Weight | - | 0.012720 oz | - |