| PartNumber | ATMEGA329-16MUR | ATMEGA329-16MU | ATMEGA329-16MI |
| Description | 8-bit Microcontrollers - MCU AVR 32K FLSH 1K EE 2 K SRAM ADC 5V-16MHZ | Microcontrollers - MCU 8-bit Microcontrollers - MCU AVR 32K FLASH 1K EE 2K SRAM LCD ADC | IC MCU 8BIT 32KB FLASH 64QFN |
| Manufacturer | Microchip | Atmel | - |
| Product Category | 8-bit Microcontrollers - MCU | Embedded - Microcontrollers | - |
| RoHS | Y | - | - |
| Package / Case | VQFN-64 | - | - |
| Series | ATmega329 | AVRR ATmega | - |
| Core | AVR | AVR | - |
| Data Bus Width | 8 bit | 8 bit | - |
| Maximum Clock Frequency | 16 MHz | 16 MHz | - |
| Operating Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | - |
| Packaging | Reel | Tray Alternate Packaging | - |
| Product | MCU | MCU | - |
| Brand | Microchip Technology / Atmel | - | - |
| Processor Series | megaAVR | megaAVR | - |
| Product Type | 8-bit Microcontrollers - MCU | - | - |
| Factory Pack Quantity | 4000 | - | - |
| Subcategory | Microcontrollers - MCU | - | - |
| Tradename | AVR | ATMEGA | - |
| Mounting Style | - | SMD/SMT | - |
| Package Case | - | MLF-64 | - |
| Operating Temperature | - | -40°C ~ 85°C (TA) | - |
| Supplier Device Package | - | 64-QFN (9x9) | - |
| Number of I O | - | 54 | - |
| Speed | - | 16MHz | - |
| EEPROM Size | - | 1K x 8 | - |
| Core Processor | - | AVR | - |
| RAM Size | - | 2K x 8 | - |
| Program Memory Type | - | FLASH | - |
| Peripherals | - | Brown-out Detect/Reset, LCD, POR, PWM, WDT | - |
| Connectivity | - | SPI, UART/USART, USI | - |
| Voltage Supply Vcc Vdd | - | 2.7 V ~ 5.5 V | - |
| Core Size | - | 8-Bit | - |
| Program Memory Size | - | 32KB (16K x 16) | - |
| Data Converters | - | A/D 8x10b | - |
| Oscillator Type | - | Internal | - |
| Maximum Operating Temperature | - | + 85 C | - |
| Minimum Operating Temperature | - | - 40 C | - |
| Interface Type | - | JTAG SPI USART USI | - |
| Supply Voltage Max | - | 5.5 V | - |
| Supply Voltage Min | - | 2.7 V | - |
| Analog Supply Voltage | - | 1.8 V to 5.5 V | - |
| Number of ADC Channels | - | 8 Channel | - |
| Number of I Os | - | 54 I/O | - |
| Data RAM Size | - | 2 kB | - |
| Data ROM Size | - | 1 kB | - |
| I O Voltage | - | 1.8 V to 5.5 V | - |
| Number of Timers Counters | - | 3 Timer | - |
| Watchdog Timers | - | Watchdog Timer | - |
| ADC Resolution | - | 10 bit | - |
| Data RAM Type | - | SRAM | - |
| Data ROM Type | - | EEPROM | - |
| DAC Resolution | - | - | - |