ATmega328P-AU
The ATmega328P-AU is a surface-mount version of the popular 8-bit AVR microcontroller, optimized for performance and energy efficiency. Built using AVR’s RISC-based architecture, it delivers robust computational power with minimal instruction cycles — ideal for embedded systems, smart devices, and space-constrained applications.
Packaged in a TQFP-32 (Thin Quad Flat Package), it is suited for automated PCB assembly while providing all the core features of the ATmega328P line — including 32KB Flash memory, 1KB EEPROM, and 2KB SRAM. With 23 programmable I/O lines, three timers, ADC, and serial communication interfaces (UART, SPI, I²C), the ATmega328P-AU is a preferred choice for custom hardware designs, wearable tech, and industrial automation.
🛠 Technical Specifications
| Parameter | Details |
|---|---|
| Architecture | 8-bit AVR RISC |
| Operating Voltage | 1.8V – 5.5V |
| Flash Memory | 32KB |
| SRAM | 2KB |
| EEPROM | 1KB |
| GPIO Pins | 23 |
| Package Type | TQFP-32 (Surface Mount) |
| Timers | 2 × 8-bit, 1 × 16-bit |
| Communication | UART, SPI, I²C |
| ADC | 10-bit, 6 Channels |
| Operating Frequency | Up to 20 MHz |
| Power-Saving Modes | Idle, ADC Noise Reduction, Power-Down |
| Temperature Range | –40°C to +85°C (Industrial Grade) |
| Programming Interface | ISP, bootloader supported |
💡 Use Cases & Applications
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Custom IoT Hardware
Seamlessly integrates into low-power connected devices, smart wearables, or sensor nodes. -
SMD-Based DIY Boards
Ideal for designers creating their own Arduino-compatible boards with a compact SMD footprint. -
Consumer Electronics Prototypes
Reliable for small gadgets, remote controls, or smart chargers with logic control. -
Robotics & Motion Control
Easily manages motor drivers, encoders, and digital sensors in mobile robots and automation kits. -
Home Automation Devices
Suitable for thermostats, wireless relays, and other smart control systems.
🛠️ Pair With
🎥 YouTube Tutorial
📺 How to Solder and Program the ATmega328P-AU for Custom Boards
👉 Watch Now
⚠️ Precautions & Tips
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Ensure proper SMD soldering tools and reflow profiles are used to avoid pin bridging.
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When programming without bootloader, use ICSP programmers like USBasp or AVRISP mkII.
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For low-noise ADC applications, connect AVCC and GND properly and filter Vref if needed.
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This version does not come with bootloader pre-installed — requires initial flashing if used standalone.
🏁 Summary & Purchase Info
Compact, powerful, and reliable — the ATmega328P-AU gives you all the functionality of a full-size microcontroller in a TQFP-32 package, perfect for professional-grade embedded designs and custom PCB layouts.
🛒 Available now at Electroway — your destination for quality electronics components and hardware development tools.
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