| PartNumber | ATMEGA324A-AUR | ATMEGA324A-CU | ATMEGA324A-AU |
| Description | 8-bit Microcontrollers - MCU AVR 32KB FLSH 1KB EE 2KB SRAM-20MHz, IND | 8-bit Microcontrollers - MCU AVR 32KB FLSH 1KB EE 2KB SRAM-20MHz, IND | 8-bit Microcontrollers - MCU AVR 32KB FLSH 1KB EE 2KB SRAM-20MHz, IND |
| 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 | VFBGA-49 | TQFP-44 |
| Series | ATmega324 | ATmega324 | ATmega324 |
| Core | AVR | AVR | AVR |
| Data Bus Width | 8 bit | 8 bit | 8 bit |
| Maximum Clock Frequency | 20 MHz | 20 MHz | 20 MHz |
| Operating Supply Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Packaging | Reel | Tray | Tray |
| Product | MCU | MCU | MCU |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | Microchip Technology / Atmel |
| Moisture Sensitive | Yes | Yes | Yes |
| Processor Series | megaAVR | megaAVR | megaAVR |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| Factory Pack Quantity | 2000 | 490 | 160 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
| Tradename | AVR | AVR | AVR |
| Unit Weight | 0.009640 oz | - | 0.077179 oz |
| Program Memory Size | - | 32 kB | 32 kB |
| Data RAM Size | - | 2 kB | 2 kB |
| ADC Resolution | - | 10 bit | 10 bit |
| Number of I/Os | - | 32 I/O | 32 I/O |
| Minimum Operating Temperature | - | - 40 C | - 40 C |
| Maximum Operating Temperature | - | + 85 C | + 85 C |
| Program Memory Type | - | Flash | Flash |
| Data RAM Type | - | SRAM | SRAM |
| Data ROM Size | - | 1 kB | 1 kB |
| Data ROM Type | - | EEPROM | EEPROM |
| Interface Type | - | 2-Wire, SPI, USART | 2-Wire, SPI, Serial, USART |
| Number of ADC Channels | - | 8 Channel | 8 |
| Number of Timers/Counters | - | 2 x 8 bit, 1 x 16 bit | 3 Timer |
| Supply Voltage Max | - | 5.5 V | - |
| Supply Voltage Min | - | 1.8 V | - |
| Watchdog Timers | - | Watchdog Timer | - |