| PartNumber | ATMEGA324PA-MNR | ATMEGA324PA-MN | ATMEGA324PA-MCHR |
| Description | 8-bit Microcontrollers - MCU 20 MHz, QFP, 105C, Green T&R | 8-bit Microcontrollers - MCU AVR 32KB FLSH 1KB EE 2KB SRAM-20MHz 105C | 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 | - | - |
| Package / Case | VQFN-44 | VQFN-44 | VQFN-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 |
| 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 | - |
| 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 | - |
| Maximum Operating Temperature | + 105 C | + 105 C | - |
| Packaging | Reel | Tray | Reel |
| Product | MCU | MCU | MCU |
| Program Memory Type | Flash | Flash | - |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | Microchip Technology / Atmel |
| Data RAM Type | SRAM | SRAM | - |
| Data ROM Size | 1 kB | 1 kB | - |
| Data ROM Type | EEPROM | EEPROM | - |
| Interface Type | I2C, SPI, UART | 2-Wire, JTAG, SPI, USART | - |
| Analog Supply Voltage | 5.5 V | 1.8 V to 5.5 V | - |
| Number of ADC Channels | 8 Channel | 8 Channel | - |
| Number of Timers/Counters | 2 x 8 bit, 1 x 16 bit | 3 Timer | - |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| Factory Pack Quantity | 4000 | 360 | 6000 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
| Supply Voltage Max | 5.5 V | 5.5 V | - |
| Supply Voltage Min | 1.8 V | 1.8 V | - |
| Tradename | AVR | AVR | AVR |
| Watchdog Timers | Watchdog Timer | Watchdog Timer | - |
| DAC Resolution | - | - | - |
| I/O Voltage | - | 1.8 V to 5.5 V | - |
| Moisture Sensitive | - | Yes | - |
| Processor Series | - | megaAVR | megaAVR |