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| PartNumber | ATXMEGA64A4U-AN | ATXMEGA64A4-AU | ATXMEGA64A4-MU |
| Description | 8-bit Microcontrollers - MCU TQFP, 105C, Green 1.6-3.6V | 8-bit Microcontrollers - MCU 8/16 bit 1.6V-3.6V 64KB + 4KB | IC MCU 8/16BIT 64KB FLASH 44VQFN |
| Manufacturer | Microchip | Microchip | - |
| Product Category | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | - |
| RoHS | Y | Y | - |
| Series | XMEGA A4U | XMEGA A4 | - |
| Packaging | Tray | - | - |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | - |
| Moisture Sensitive | Yes | - | - |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | - |
| Factory Pack Quantity | 160 | 160 | - |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | - |
| Tradename | XMEGA | XMEGA | - |
| Shipping Restrictions | - | - | |
| Mounting Style | - | SMD/SMT | - |
| Package / Case | - | TQFP-44 | - |
| Core | - | AVR | - |
| Data Bus Width | - | 8 bit/16 bit | - |
| Maximum Clock Frequency | - | 32 MHz | - |
| Program Memory Size | - | 64 kB | - |
| Data RAM Size | - | 4 kB | - |
| ADC Resolution | - | 12 bit | - |
| Number of I/Os | - | 36 I/O | - |
| Operating Supply Voltage | - | 1.6 V to 3.6 V | - |
| Minimum Operating Temperature | - | - 40 C | - |
| Maximum Operating Temperature | - | + 85 C | - |
| Height | - | 1 mm | - |
| Length | - | 10 mm | - |
| Product | - | MCU | - |
| Program Memory Type | - | Flash | - |
| Width | - | 10 mm | - |
| Data RAM Type | - | SRAM | - |
| Data ROM Size | - | 2 kB | - |
| Data ROM Type | - | EEPROM | - |
| Interface Type | - | I2C, SPI, USART | - |
| Number of ADC Channels | - | 1 Channel | - |
| Number of Timers/Counters | - | 5 Timer | - |
| Processor Series | - | AVR XMEGA | - |