| PartNumber | ATSAMA5D21B-CU | ATSAMA5D21A-CUR | ATSAMA5D21A-CU |
| Description | Microprocessors - MPU MPU ARM BGA GREEN | Microprocessors - MPU BGA GREEN, IND TEMP,MRLA,T&R | Microprocessors - MPU BGA GREEN, IND TEMP,MRLA |
| Manufacturer | Microchip | Microchip | Microchip |
| Product Category | Microprocessors - MPU | Microprocessors - MPU | Microprocessors - MPU |
| RoHS | Y | Y | Y |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | TFBGA-196 | TFBGA-196 | TFBGA-196 |
| Series | SAMA5D2 | SAMA5D2 | SAMA5D2 |
| Packaging | Tray | - | - |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Moisture Sensitive | Yes | - | - |
| Factory Pack Quantity | 176 | 176 | 176 |
| Unit Weight | 0.008261 oz | - | - |
| Core | - | ARM Cortex A5 | ARM Cortex A5 |
| Number of Cores | - | 1 Core | 1 Core |
| Data Bus Width | - | 32 bit | 32 bit |
| Maximum Clock Frequency | - | 500 MHz | 500 MHz |
| L1 Cache Instruction Memory | - | 32 kB | 32 kB |
| L1 Cache Data Memory | - | 32 kB | 32 kB |
| Operating Supply Voltage | - | 1.2 V | 1.2 V |
| Minimum Operating Temperature | - | - 40 C | - 40 C |
| Maximum Operating Temperature | - | + 85 C | + 85 C |
| Memory Type | - | L1/L2 Cache, ROM, SRAM | L1/L2 Cache, ROM, SRAM |
| Data RAM Size | - | 128 kB | 128 kB |
| Data ROM Size | - | 160 kB | 160 kB |
| Interface Type | - | 2-Wire, Ethernet, CAN, I2C, SPI, UART, USB | 2-Wire, Ethernet, CAN, I2C, SPI, UART, USB |
| Number of I/Os | - | 72 I/O | 72 I/O |
| I/O Voltage | - | 1.65 V to 3.6 V | 1.65 V to 3.6 V |
| Instruction Type | - | Floating Point | Floating Point |
| L2 Cache Instruction / Data Memory | - | 128 kB | 128 kB |
| Number of Timers/Counters | - | 6 x 32 bit | 6 x 32 bit |
| Processor Series | - | SAMA5D2 | SAMA5D2 |
| Watchdog Timers | - | Watchdog Timer | Watchdog Timer |