Key Features

• 8-bit AVR RISC architecture: Designed for efficient instruction execution and stable embedded performance.
• Low-power picoPower technology: Suitable for portable, battery-powered, and energy-sensitive applications.
• 32KB ISP flash memory: Supports in-system programming and read-while-write operation.
• 2KB SRAM and 1KB EEPROM: Provides memory for runtime variables and non-volatile stored settings.
• 23 general-purpose I/O lines: Flexible pins for digital input, output, communication, and control functions.
• Multiple timers and counters: Useful for timing control, PWM generation, frequency measurement, and event handling.
• Serial communication support: Includes USART, SPI, and 2-wire serial interface for connecting modules and peripherals.
• Analog input support: Includes 10-bit analog-to-digital conversion for sensor reading and measurement circuits.
• Programmable watchdog timer: Helps improve system reliability in embedded applications.
• Surface-mount TQFP32 package: Suitable for compact PCB layouts and production designs.

Technical Specifications

Applications

• Arduino-compatible custom board designs.
• Standalone microcontroller circuits.
• Robotics and automation control boards.
• Sensor reading and data acquisition circuits.
• Motor control and PWM applications.
• Battery-powered embedded systems.
• IoT nodes and compact control modules.
• Educational electronics and microcontroller training.
• Custom PCB projects requiring a compact AVR controller.

Programming and Design Notes

The ATmega328P U-TH is commonly used in projects that require Arduino-style development or direct AVR programming. When using this chip with Arduino-based workflows, make sure the exact ATmega328P device is selected in the programming environment, because the P version has a different device signature from some non-P variants. If the chip is blank, a bootloader may need to be burned first using a suitable AVR ISP programmer before uploading code through a USB-to-serial interface.

For custom PCB design, the TQFP32 package is suitable for compact boards but requires proper footprint selection, stable power supply decoupling, reset circuitry, programming header access, and clock configuration depending on the application. The device can operate from 1.8V to 5.5V, making it suitable for both low-voltage and 5V-compatible circuits when designed correctly.

Package Includes

• 1 × ATmega328P U-TH AVR Microcontroller TQFP32.

Micro Ohm Quality Note

The ATmega328P U-TH AVR Microcontroller TQFP32 is supplied for electronics development, repair, education, and custom circuit design. Random samples may be checked by Micro Ohm to help verify package type, marking, and physical condition. Packaging, reel cut format, printed code, or batch marking may vary depending on stock batch while the main electrical specification remains based on the ATmega328P TQFP32 device family.