Specification	ATMEGA324PB-AU

A/D Channels	8 count
A/D Resolution (bits)	10 bit
Connectivity	USART, UART, SPI, I2C
Core Processor	AVR
Core Size (Bit Width)	8 Bit
EEPROM Size (Depth)	1 K
EEPROM Size (Width)	8 bit
Mounting Type	Surface Mount
Number of I/O	39
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-40 °C
Oscillator Type	Internal
Package / Case	44-TQFP
Package Length	10 mm
Package Name	44‑TQFP
Package Width	10 mm
Peripherals	WDT, PWM, Brown-out Detect, POR, Reset
Program Memory Depth	16 K
Program Memory Size	32 KB
Program Memory Type	FLASH
Program Memory Width	16
RAM Size Depth	2 K
RAM Size Width	8 bit
Speed	20 MHz
Voltage - Supply (Vcc/Vdd) Maximum	5.5 V
Voltage - Supply (Vcc/Vdd) Minimum	1.8 V

ATMEGA324 Series

Part	Program Memory Width	Program Memory Size	Program Memory Depth	Package Name	Package Width	Package Length	Operating Temperature (Max)	Operating Temperature (Min)	A/D Channels	A/D Resolution (bits)	RAM Size Depth	RAM Size Width	EEPROM Size (Depth)	EEPROM Size (Width)	Number of I/O	Voltage - Supply (Vcc/Vdd) Minimum	Voltage - Supply (Vcc/Vdd) Maximum	Package / Case	Core Processor	Program Memory Type	Oscillator Type	Speed	Peripherals	Connectivity	Core Size (Bit Width)	Mounting Type
Microchip Technology ATMEGA324PA-MCHR	16	32 KB	16 K	44-QFN	5 mm	5 mm	85 °C	-40 °C	8 count	10 bit	2 K	8 bit	1 K	8 bit	32	1.8 V	5.5 V	44-VQFN Dual Rows Exposed Pad	AVR	FLASH	Internal	20 MHz	Brown-out Detect POR PWM Reset WDT	I2C SPI UART USART	8 Bit	Surface Mount
Microchip Technology ATMEGA324PA-MN	16	32 KB	16 K	44-VQFN	7 mm	7 mm	105 °C	-40 °C	8 count	10 bit	2 K	8 bit	1 K	8 bit	32	1.8 V	5.5 V	44-VFQFN Exposed Pad	AVR	FLASH	Internal	20 MHz	Brown-out Detect POR PWM Reset WDT	I2C SPI UART USART	8 Bit	Surface Mount