ATMEGA328P-AU TQFP-32 8-Bit AVR Microcontroller 32KB Flash 20MHz SMD

The ATMEGA328P-AU is a high-performance low-power 8-bit AVR RISC-based microcontroller engineered for high-density surface-mount PCB layouts. Operating as the primary hardware architecture behind the Arduino Nano and Uno ecosystems, this chip combines a highly efficient instruction set with a compact TQFP-32 package (7mm × 7mm, 0.8mm pitch). It is the definitive choice for high-volume commercial production, embedded system design, and miniaturized smart devices.

Built with Atmel’s picoPower technology, the ATMEGA328P-AU offers ultra-low power consumption in sleep modes and features two additional analog inputs (A6 and A7) unavailable on the DIP-28 format, providing greater design flexibility for engineers.

Key Specifications

• Manufacturer: Microchip Technology (formerly Atmel)
• Part Number: ATMEGA328P-AU
• Core Processor: 8-Bit AVR RISC
• Package: TQFP-32 (7 × 7 mm, 0.8 mm pitch)
• Program Memory: 32 KB Flash (Read-While-Write)
• SRAM: 2 KB
• EEPROM: 1 KB
• Max Operating Frequency: 20 MHz
• Operating Voltage: 1.8V to 5.5V
• I/O Pins: 23 Programmable
• ADC: 8-Channel, 10-Bit
• PWM Channels: 6
• Communication: SPI (Master/Slave), I2C (2-Wire), USART (Programmable)
• Mounting Style: SMD / SMT
• Compliance: RoHS, Lead-Free, Green Packaging

Applications

• Industrial automation and sensing for multi-channel analog sensor inputs, logic control, and Modbus/UART communication nodes
• IoT endpoints for smart appliances, environmental loggers, and automated telemetry hardware
• Robotics and motor control via onboard hardware PWM timers for H-bridge circuits, servo arrays, and stepper controllers
• Consumer electronics and prototyping including custom Arduino clones, wearable electronics, and smart home modules

Package Includes

• 1 x ATMEGA328P-AU TQFP-32 Microcontroller IC

Note: Image is for representation purpose only.