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| PartNumber | AT32UC3A0512AU-ALUT | AT32UC3A0512AU-ALTRA | AT32UC3A0512AU-ALUR |
| Description | 32-bit Microcontrollers - MCU 512KB Flash Audio 85Deg | 32-bit Microcontrollers - MCU 512K FlashAUD144LQFP -40/+85o AUTO T&R | |
| Manufacturer | Microchip | Microchip | - |
| Product Category | 32-bit Microcontrollers - MCU | 32-bit Microcontrollers - MCU | - |
| RoHS | Y | Y | - |
| Mounting Style | SMD/SMT | - | - |
| Package / Case | LQFP-144 | - | - |
| Series | AT32UC3A0 | AT32UC3A0 | - |
| Core | AVR | AVR | - |
| Data Bus Width | 32 bit | 32 bit | - |
| Maximum Clock Frequency | 66 MHz | - | - |
| Program Memory Size | 512 kB | - | - |
| Data RAM Size | 64 kB | - | - |
| ADC Resolution | 10 bit | - | - |
| Number of I/Os | 109 I/O | - | - |
| Operating Supply Voltage | 1.8 V, 3.3 V | 1.8 V, 3.3 V | - |
| Minimum Operating Temperature | - 40 C | - | - |
| Maximum Operating Temperature | + 85 C | - | - |
| Packaging | Tray | Reel | - |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | - |
| Moisture Sensitive | Yes | - | - |
| Number of ADC Channels | 8 Channel | - | - |
| Number of Timers/Counters | 1 x 16 bit | - | - |
| Processor Series | AT32UC3A | - | - |
| Product Type | 32-bit Microcontrollers - MCU | 32-bit Microcontrollers - MCU | - |
| Factory Pack Quantity | 300 | 800 | - |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | - |
| Tradename | AVR | AVR | - |
| Watchdog Timers | Watchdog Timer | - | - |