| PartNumber | ATMEGA128-16MU | ATMEGA128-16MN | ATMEGA128-16MNR |
| Description | 8-bit Microcontrollers - MCU 128kB Flash 4kB EEPROM 53 I/O Pins | 8-bit Microcontrollers - MCU AVR,128KB FLASH 4KB SRAM,4KB EE,5V | 8-bit Microcontrollers - MCU AVR,128KB FLASH 4KB EE,4KB SRAM,5V |
| 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 | MLF-64 | MLF-64 | MLF-64 |
| Series | ATmega128 | ATmega128 | ATmega128 |
| 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 | 128 kB | 128 kB | 128 kB |
| Data RAM Size | 4 kB | 4 kB | 4 kB |
| ADC Resolution | 10 bit | - | - |
| Number of I/Os | 53 I/O | 53 I/O | - |
| Operating Supply Voltage | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 105 C | - |
| Packaging | Tray | Tray | Reel |
| Height | 0.88 mm | 0.88 mm | - |
| Length | 9 mm | 9 mm | - |
| Product | MCU | MCU | MCU |
| Program Memory Type | Flash | Flash | Flash |
| Width | 9 mm | 9 mm | - |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | Microchip Technology / Atmel |
| Data RAM Type | SRAM | SRAM | SRAM |
| Data ROM Size | 4 kB | 4 kB | 4 kB |
| Data ROM Type | EEPROM | EEPROM | EEPROM |
| Interface Type | I2C, JTAG, SPI, USART | JTAG/TWI/SPI/USART | - |
| Analog Supply Voltage | 2.7 V to 5.5 V | - | - |
| DAC Resolution | - | - | - |
| I/O Voltage | 2.7 V to 5.5 V | - | - |
| Number of ADC Channels | 8 Channel | - | - |
| Number of Timers/Counters | 4 Timer | 4 Timer | - |
| Processor Series | ATmega | 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 |
| Supply Voltage Max | 5.5 V | 5.5 V | - |
| Supply Voltage Min | 4.5 V | 4.5 V | - |
| Tradename | AVR | AVR | AVR |
| Watchdog Timers | Watchdog Timer | - | - |
| Unit Weight | 0.070548 oz | - | - |
| Moisture Sensitive | - | Yes | - |