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| PartNumber | ATSAM3S2BA-AU | ATSAM3S2BA-AUR | ATSAM3S2BA |
| Description | ARM Microcontrollers - MCU MRL A 128K Flash 32K SRAM Ind Temp | ARM Microcontrollers - MCU LQFP,Green,IND TEMP,MRL A | |
| Manufacturer | Microchip | Microchip | - |
| Product Category | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | - |
| RoHS | Y | N | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | QFP-64 | QFP-64 | - |
| Series | SAM3S | SAM3S | - |
| Core | ARM Cortex M3 | ARM Cortex M3 | - |
| Data Bus Width | 32 bit | 32 bit | - |
| Maximum Clock Frequency | 64 MHz | 64 MHz | - |
| Program Memory Size | 128 kB | 128 kB | - |
| Data RAM Size | 32 kB | - | - |
| ADC Resolution | 12 bit | 12 bit | - |
| Number of I/Os | 47 I/O | 79 I/O | - |
| Operating Supply Voltage | 1.8 V | 1.62 V to 3.6 V | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Packaging | Tray | Reel | - |
| Program Memory Type | Flash | Flash | - |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | - |
| Data ROM Size | 16 kB | - | - |
| Interface Type | 2-Wire, RS-485, SPI, UART | I2S, SPI, UART, USART, USB | - |
| Analog Supply Voltage | 3.3 V | 3.3 V | - |
| I/O Voltage | 3.3 V | 3.3 V | - |
| Moisture Sensitive | Yes | - | - |
| Number of ADC Channels | 10 | 16 Channel | - |
| Number of Timers/Counters | 6 Timer | 6 Timer | - |
| Processor Series | AT91SAM3S | SAM3S | - |
| Product Type | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | - |
| Factory Pack Quantity | 160 | 1500 | - |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | - |
| Supply Voltage Max | 1.9 V | 3.6 V | - |
| Supply Voltage Min | 1.62 V | 1.62 V | - |
| Unit Weight | 0.062237 oz | - | - |
| Product | - | MCU | - |
| Data RAM Type | - | SRAM | - |
| DAC Resolution | - | 12 bit | - |
| Watchdog Timers | - | Watchdog Timer | - |