ATECC608 Secure Element Breakout Board – STEMMA QT / Qwiic Compatible

Product Description
The ATECC608 is a hardware-based secure element (crypto-authentication IC) designed to safely store cryptographic keys and perform secure operations inside the chip itself. Unlike standard microcontrollers, secret keys stored inside the ATECC608 cannot be read out, even if firmware or memory is compromised. All cryptographic operations are handled internally using challenge–response methods, ensuring strong protection against cloning, firmware extraction, and hardware attacks.

This breakout board exposes the ATECC608 over a simple I2C interface, making it easy to integrate into embedded systems, IoT devices, and secure products. Once configured and locked, the chip supports ECDH key exchange, AES-128 encryption/decryption, SHA-256 hashing, HMAC authentication, and true hardware random number generation.

The board includes onboard support circuitry and a STEMMA QT / Qwiic compatible JST-SH connector, allowing solder-free, plug-and-play connection with Arduino, Raspberry Pi, ESP32, STM32, and other I2C-capable platforms. It works with both 3.3V and 5V logic systems.

Key Features

• Hardware secure element for key storage and authentication

• Private keys are non-readable and protected in hardware

• Supports ECDH, AES-128, SHA-256, and HMAC operations

• True hardware random number generator (TRNG)

• I2C communication interface

• Fixed I2C address: 0x60

• Compatible with 3.3V and 5V systems

• STEMMA QT / Qwiic connector for solder-free use

Technical Specifications

• Secure Element IC: ATECC608

• Interface: I2C

• I2C Address: 0x60 (fixed)

• Cryptographic Functions:

  • ECDH key exchange

  • AES-128 encryption/decryption

  • SHA-256 hashing

  • HMAC authentication

• Random Number Generator: Hardware-based

• Operating Voltage: 3.3V – 5V

• Recommended I2C Speed: 400 kHz when sharing bus

Typical Applications

• Secure IoT devices and authentication systems

• Device identity and anti-cloning protection

• Encrypted communication between devices

• Secure boot and firmware validation

• License and accessory authentication

Package Contents

• 1 × ATECC608 Secure Element Breakout Board

This ATECC608 breakout provides a robust, hardware-level security solution for modern embedded designs, combining strong cryptography with easy integration through STEMMA QT / Qwiic compatibility.