| PartNumber | ATMEGA128A-AU | ATMEGA128A-AN | ATMEGA128A-ANR |
| Description | 8-bit Microcontrollers - MCU 128K Flash 4K EEPROM 4K SRAM 53 IO Pins | 8-bit Microcontrollers - MCU AVR 128K Flash 16MHz 105 degree C Green | 8-bit Microcontrollers - MCU AVR 128K Flash 16MHz 105 degree C Green |
| 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 | TQFP-64 | TQFP-64 |
| Series | ATmega128A | ATmega128A | ATmega128A |
| 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 | - |
| Data RAM Size | 4 kB | 4 kB | - |
| ADC Resolution | 10 bit | 10 bit | - |
| Number of I/Os | 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 | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Packaging | Tray | Tray | Reel |
| Height | 1 mm | - | - |
| Length | 14 mm | - | - |
| Product | MCU | MCU | MCU |
| Program Memory Type | Flash | Flash | - |
| Width | 14 mm | - | - |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | Microchip Technology / Atmel |
| Data RAM Type | SRAM | SRAM | - |
| Data ROM Size | 4 kB | 4 kB | - |
| Data ROM Type | EEPROM | EEPROM | - |
| Interface Type | JTAG | I2C, SPI, UART | - |
| Moisture Sensitive | Yes | Yes | Yes |
| Number of ADC Channels | 8 | 8 | - |
| Number of Timers/Counters | 4 Timer | 4 Timer | - |
| Processor Series | megaAVR | megaAVR | megaAVR |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| Factory Pack Quantity | 90 | 90 | 1000 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
| Tradename | AVR | AVR | AVR |
| Unit Weight | 0.012720 oz | 0.012720 oz | 0.012720 oz |
| Supply Voltage Max | - | 5.5 V | - |
| Supply Voltage Min | - | 2.7 V | - |