| PartNumber | ATSAM3X4CA-AU | ATSAM3U4EA-AU | ATSAM3U4EA-CU |
| Description | ARM Microcontrollers - MCU QFP100,GREEN IND TEMP, MRL A | ARM Microcontrollers - MCU 256K Flash, 52K SRAM 32-bit ARM Cortex M3 | ARM Microcontrollers - MCU 256K Flash, 52K SRAM 32-bit ARM Cortex M3 |
| Manufacturer | Microchip | Microchip | Microchip |
| Product Category | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU |
| RoHS | Y | Y | Y |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | LQFP-100 | LQFP-144 | LFBGA-144 |
| Series | SAM3X | SAM3U | SAM3U |
| Core | ARM Cortex M3 | ARM Cortex M3 | ARM Cortex M3 |
| Data Bus Width | 32 bit | 32 bit | 32 bit |
| Maximum Clock Frequency | 84 MHz | 96 MHz | 96 MHz |
| Program Memory Size | 256 kB | 256 kB | 256 kB |
| Data RAM Size | 64 kB | 52 kB | 52 kB |
| Operating Supply Voltage | 1.8 V | 1.8 V | 1.8 V |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 85 C | + 85 C | + 85 C |
| Packaging | Tray | Tray | Tray |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | Microchip Technology / Atmel |
| I/O Voltage | 3.3 V | 3.3 V | 3.3 V |
| Moisture Sensitive | Yes | Yes | Yes |
| Processor Series | SAM3X | ATSAM3x | ATSAM3x |
| Product Type | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU |
| Factory Pack Quantity | 90 | 60 | 184 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
| Supply Voltage Max | 1.95 V | 1.95 V | 1.95 V |
| Supply Voltage Min | 1.62 V | 1.62 V | 1.62 V |
| Unit Weight | 0.046530 oz | 0.045518 oz | 0.078273 oz |
| Number of I/Os | - | 96 I/O | 96 I/O |
| Height | - | 1.4 mm | 0.91 mm |
| Length | - | 20 mm | 10 mm |
| Product | - | MCU | MCU |
| Program Memory Type | - | Flash | Flash |
| Width | - | 20 mm | 10 mm |
| Interface Type | - | 2xTWI, 4xUSART, 5xSPI, Bus | 2xTWI, 4xUSART, 5xSPI, Bus |
| Number of Timers/Counters | - | 8 Timer | 8 Timer |
| Tradename | - | Cortex-M3, Cortex | Cortex-M3, Cortex |