| PartNumber | ATMEGA2561V-8MU | ATMEGA2561V-8MUR | ATMEGA2561V-8MI |
| Description | 8-bit Microcontrollers - MCU AVR 256K FLASH 4K EE 8K SRAM ADC 1.8V | 8-bit Microcontrollers - MCU AVR 256K FLSH4K EE 8K SRAM ADC1.8V-8MHz | IC MCU 8BIT 256KB FLASH 64QFN |
| Manufacturer | Microchip | Microchip | - |
| Product Category | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | - |
| RoHS | Y | Y | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | MLF-64 | VQFN-64 | - |
| Series | ATmega256x | ATmega256x | - |
| Core | AVR | AVR | - |
| Data Bus Width | 8 bit | 8 bit | - |
| Maximum Clock Frequency | 8 MHz | 8 MHz | - |
| Program Memory Size | 256 kB | - | - |
| Data RAM Size | 8 kB | - | - |
| Number of I/Os | 54 I/O | - | - |
| Operating Supply Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | - |
| Minimum Operating Temperature | - 40 C | - | - |
| Maximum Operating Temperature | + 85 C | - | - |
| Packaging | Tray | Reel | - |
| Height | 0.95 mm | - | - |
| Length | 9 mm | - | - |
| Product | MCU | MCU | - |
| Program Memory Type | Flash | - | - |
| Width | 9 mm | - | - |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | - |
| Data RAM Type | SRAM | - | - |
| Data ROM Size | 4 kB | - | - |
| Data ROM Type | EEPROM | - | - |
| Interface Type | 2-Wire, SPI, USART | - | - |
| Number of Timers/Counters | 6 Timer | - | - |
| Processor Series | megaAVR | megaAVR | - |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | - |
| Factory Pack Quantity | 260 | 4000 | - |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | - |
| Supply Voltage Max | 5.5 V | - | - |
| Supply Voltage Min | 1.8 V | - | - |
| Tradename | AVR | AVR | - |
| Moisture Sensitive | - | Yes | - |
| Unit Weight | - | 0.008021 oz | - |