🔍 Product Overview

The ATTINY85-20PU is a compact, high-performance 8-bit AVR microcontroller from Microchip (formerly Atmel). Despite its small size, it packs powerful features — 8 KB of Flash memory, 512 B SRAM, 512 B EEPROM, and multiple peripherals — making it a favorite for small, low-power, and cost-sensitive embedded projects.

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🚀 Why It’s Ideal for Your Projects

• Tiny yet powerful: Designed for projects where space is limited but performance matters — from wearable devices to custom automation.

• Low power consumption: Excellent for battery-operated designs thanks to multiple sleep modes and efficient operation up to 20 MHz.

• Flexible I/O: Each of the 6 I/O pins can serve multiple functions, such as ADC, PWM, or serial communication.

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📝 Key Features

• Model: ATTINY85-20PU (DIP-8 package)

• Architecture: 8-bit AVR RISC

• Flash Memory: 8 KB for program storage

• SRAM: 512 bytes

• EEPROM: 512 bytes for non-volatile data

• Clock Speed: Up to 20 MHz (external crystal or internal oscillator)

• Operating Voltage: 2.7 V – 5.5 V

• I/O Pins: 6 general-purpose pins (multiplexed with ADC, PWM, SPI, and I²C functions)

• Peripherals:

  • Analog-to-Digital Converter (10-bit)

  • PWM Channels

  • Timer/Counter Units

  • Watchdog Timer

  • USI (Universal Serial Interface) for I²C/SPI

• Package: 8-pin DIP — easy to handle for breadboard or through-hole projects

• Temperature Range: -40 °C to +85 °C

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⚙️ Typical Applications

• DIY electronics & prototypes – Ideal for compact, battery-powered or wearable devices.

• Automation & control – Used in sensor modules, small robots, and signal processing units.

• IoT & smart devices – Great for simple smart gadgets that require basic processing or communication.

• Educational use – Perfect for learning microcontroller programming with limited I/O.

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✅ Why You’ll Love It

The ATTINY85-20PU combines simplicity, reliability, and power efficiency in a small DIP-8 form factor. It’s fully programmable using the Arduino IDE (via USB-to-ISP programmer or Arduino as ISP), making it easy for both beginners and advanced developers. Compact yet versatile, it’s an excellent choice for anyone building low-power, space-constrained, or cost-optimized embedded systems.