| PartNumber | ATMEGA1284P-AU | ATMEGA1284P-MU | ATMEGA1284P-AUR |
| Description | 8-bit Microcontrollers - MCU 128KB Flash 20MHz 1.8V-5.5V | 8-bit Microcontrollers - MCU 128KB Flash 20MHz 1.8V-5.5V | 8-bit Microcontrollers - MCU AVR,128KB FLASH,1.8V 4KB EE 16KB SRAM |
| 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-44 | VQFN-44 | TQFP-44 |
| Series | ATmega1284 | ATmega1284 | ATmega1284 |
| Core | AVR | AVR | AVR |
| Data Bus Width | 8 bit | 8 bit | 8 bit |
| Maximum Clock Frequency | 20 MHz | 20 MHz | 20 MHz |
| Program Memory Size | 128 kB | 128 kB | 128 kB |
| Data RAM Size | 16 kB | 16 kB | 16 kB |
| Number of I/Os | 32 I/O | 32 I/O | 32 I/O |
| Operating Supply Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 85 C | + 85 C | + 85 C |
| Packaging | Tray | Tray | Reel |
| Height | 1.05 mm | 0.88 mm | 1.05 mm |
| Length | 10.1 mm | 7 mm | 10.1 mm |
| Product | MCU | MCU | MCU |
| Program Memory Type | Flash | Flash | Flash |
| Width | 10.1 mm | 7 mm | 10.1 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 | 2-Wire, SPI, USART | 2-Wire, SPI, USART | 2-Wire, SPI, USART |
| Moisture Sensitive | Yes | - | - |
| Number of Timers/Counters | 3 Timer | 3 Timer | 3 Timer |
| Processor Series | megaAVR | megaAVR | megaAVR |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| Factory Pack Quantity | 160 | 360 | 2000 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
| Supply Voltage Max | 5.5 V | 5.5 V | 5.5 V |
| Supply Voltage Min | 1.8 V | 1.8 V | 1.8 V |
| Tradename | AVR | AVR | AVR |
| Unit Weight | 0.077179 oz | 0.057320 oz | - |