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| PartNumber | ATMEGA64A-MN | ATMEGA64A-MU | ATMEGA64A-MNR |
| Description | 8-bit Microcontrollers - MCU 16MHz MLF 105C | 8-bit Microcontrollers - MCU 64K Flsh 2K EEPROM 4K SRAM 16MHz | 8-bit Microcontrollers - MCU 16MHz MLF105C |
| Manufacturer | Microchip | Microchip | Microchip |
| Product Category | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| RoHS | Y | Y | Y |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | TQFP-64 | MLF-64 | TQFP-64 |
| Series | ATmega64A | ATmega64A | ATmega64A |
| Core | AVR | AVR | AVR |
| Data Bus Width | 8 bit | 8 bit | 8 bit |
| Maximum Clock Frequency | 16 MHz | 16 MHz | 16 MHz |
| Program Memory Size | 64 kB | 64 kB | 64 kB |
| Data RAM Size | 2 kB | 4 kB | 2 kB |
| Number of I/Os | 53 I/O | 53 I/O | 53 I/O |
| Operating Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 105 C | + 85 C | + 105 C |
| Packaging | Tray | Tray | Reel |
| Product | MCU | MCU | MCU |
| Program Memory Type | Flash | Flash | Flash |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | Microchip Technology / Atmel |
| Data RAM Type | EEPROM | SRAM | EEPROM |
| Interface Type | I2C, SPI, UART | SPI, USART | I2C, SPI, UART |
| Moisture Sensitive | Yes | Yes | - |
| Processor Series | megaAVR | megaAVR | megaAVR |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| Factory Pack Quantity | 260 | 260 | 4000 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
| Tradename | AVR | AVR | AVR |
| Unit Weight | 0.012720 oz | 0.053158 oz | 0.012720 oz |
| Height | - | 0.88 mm | - |
| Length | - | 9 mm | - |
| Width | - | 9 mm | - |
| Data ROM Size | - | 2 kB | - |
| Data ROM Type | - | EEPROM | - |
| Number of Timers/Counters | - | 4 Timer | - |
| Supply Voltage Max | - | 5.5 V | - |
| Supply Voltage Min | - | 2.7 V | - |