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| PartNumber | AT32UC3C0256C-ALUR | AT32UC3C0128C-ALUR | AT32UC3C0128C-ALUT |
| Description | 32-bit Microcontrollers - MCU UC3C 256K FLASH 64K SRAM | 32-bit Microcontrollers - MCU UC3C 128K FLASH 32K SRAM | 32-bit Microcontrollers - MCU UC3C 128K FLASH 32K SRAM |
| Manufacturer | Microchip | Microchip | Microchip |
| Product Category | 32-bit Microcontrollers - MCU | 32-bit Microcontrollers - MCU | 32-bit Microcontrollers - MCU |
| RoHS | Y | Y | Y |
| Package / Case | LQFP-144 | LQFP-144 | LQFP-144 |
| Series | AT32UC3C0 | AT32UC3C0 | AT32UC3C0 |
| Core | AVR | AVR | AVR |
| Data Bus Width | 32 bit | 32 bit | 32 bit |
| Maximum Clock Frequency | 66 MHz | 66 MHz | 66 MHz |
| Program Memory Size | 256 kB | 128 kB | 128 kB |
| Data RAM Size | 64 kB | 32 kB | 32 kB |
| Number of I/Os | 123 I/O | 123 I/O | 123 I/O |
| Operating Supply Voltage | 3 V to 5.5 V | 3 V to 5.5 V | 3 V to 5.5 V |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 85 C | + 85 C | + 85 C |
| Packaging | Reel | Reel | Tray |
| Height | 1.4 mm | 1.4 mm | 1.4 mm |
| Length | 20 mm | 20 mm | 20 mm |
| Program Memory Type | Flash | Flash | Flash |
| Width | 20 mm | 20 mm | 20 mm |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | Microchip Technology / Atmel |
| Interface Type | CAN/Ethernet/I2S/SPI/TWI/USART/USB | CAN/Ethernet/I2S/SPI/TWI/USART/USB | CAN/Ethernet/I2S/SPI/TWI/USART/USB |
| Moisture Sensitive | Yes | - | Yes |
| Number of Timers/Counters | 7 Timer | 7 Timer | 7 Timer |
| Processor Series | AT32UC3C | AT32UC3C | AT32UC3C |
| Product Type | 32-bit Microcontrollers - MCU | 32-bit Microcontrollers - MCU | 32-bit Microcontrollers - MCU |
| Factory Pack Quantity | 800 | 800 | 60 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
| Supply Voltage Max | 3.6 V, 5.5 V | 3.6 V, 5.5 V | 3.6 V, 5.5 V |
| Supply Voltage Min | 3 V, 4.5 V | 3 V, 4.5 V | 3 V, 4.5 V |
| Tradename | AVR | AVR | AVR |
| Unit Weight | 0.045518 oz | 0.045518 oz | 0.045518 oz |