32-bit ARM Cortex M3 RISC microcontroller featuring 256KB Flash program memory and 64KB RAM. Operates at up to 84 MHz with multiple interface types including CAN, I2C, SPI, UART, USART, USB, and I2S. Offers 16 ADC channels and 2x 12-bit DAC channels. Packaged in a 100-pin LQFP (14x14mm) for surface mounting.
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Microchip ATSAM3A4CA-AU technical specifications.
| Basic Package Type | Lead-Frame SMT |
| Package Family Name | QFP |
| Package/Case | LQFP |
| Package Description | Low Profile Quad Flat Package |
| Lead Shape | Gull-wing |
| Pin Count | 100 |
| PCB | 100 |
| Package Length (mm) | 14 |
| Package Width (mm) | 14 |
| Package Height (mm) | 1.4 |
| Seated Plane Height (mm) | 1.6(Max) |
| Pin Pitch (mm) | 0.5 |
| Package Material | Plastic |
| Mounting | Surface Mount |
| Jedec | MS-026BED |
| Family Name | SAM3A |
| Data Bus Width | 32bit |
| Instruction Set Architecture | RISC |
| Maximum Clock Rate | 84MHz |
| Maximum CPU Frequency | 84MHz |
| Device Core | ARM Cortex M3 |
| Program Memory Type | Flash |
| Program Memory Size | 256KB |
| RAM Size | 64KB |
| Number of Programmable I/Os | 63 |
| Core Architecture | ARM |
| Programmability | Yes |
| Number of Timers | 1 |
| Interface Type | CAN/I2C/I2S/SPI/UART/USART/USB |
| CAN | 2 |
| I2C | 2 |
| SPI | 4 |
| Ethernet | 0 |
| UART | 4 |
| USART | 4 |
| USB | 1 |
| I2S | 1 |
| Max Operating Supply Voltage | 3.6V |
| Min Operating Temperature | -40°C |
| Max Operating Temperature | 85°C |
| ADC Channels | 16 |
| Number of ADCs | Single |
| DAC Channels | 2 |
| DAC Resolution | 12bit |
| Number of DACs | Single |
| Cage Code | 60991 |
| EU RoHS | Yes |
| HTS Code | 8542310001 |
| Schedule B | 8542310000 |
| ECCN | 3A991.a.2 |
| Automotive | No |
| AEC Qualified | No |
| PPAP | No |
| RoHS Versions | 2011/65/EU, 2015/863 |
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