{"title":"Adafruit ATECC608 Breakout Board - STEMMA QT / Qwiic","handle":"adafruit-atecc608-breakout-board-stemma-qt-qwiic","url":"/products/adafruit-atecc608-breakout-board-stemma-qt-qwiic","description":"The Adafruit ATECC608 Breakout provides hardware-based cryptographic security for your microcontroller projects. This crypto-authentication chip from Microchip stores private keys securely — once locked, the keys cannot be read back, only used for challenge-response authentication. Even if someone gains access to your hardware and reads the firmware, the secret keys remain protected.\n\nThe ATECC608 communicates over I2C and supports ECDH key agreement, AES-128 encrypt/decrypt/signing, SHA-256/HMAC hash functions, and hardware random number generation. STEMMA QT connectors provide solderless I2C connection, and the board works with 3.3V or 5V logic.\n\nKey Features\n\n\nSecure Key Storage – Private keys locked in hardware, cannot be read back\n\nECDH Key Agreement – Elliptic curve Diffie-Hellman for secure key exchange\n\nAES-128 Support – Hardware encrypt/decrypt/signing\n\nSHA-256/HMAC – Hardware-accelerated hash functions\n\nRandom Number Generator – Hardware RNG for cryptographic operations\n\nI2C Interface – Fixed address 0x60\n\nSTEMMA QT / Qwiic Connectors – Solderless I2C connection\n\nWide Voltage Range – 3.3V or 5V power and logic\n\n\nIdeal For\n\nIoT device authentication and security\nSecure boot and firmware verification\nEncrypted communication\nHardware key management\n\n\nPackage Contents\n\n1× Adafruit ATECC608 Breakout Board with STEMMA QT\n\n\n\nNote: The I2C address is fixed at 0x60. Microchip recommends using 400 kHz I2C speed when other devices share the bus, to avoid bus contention. STEMMA QT cable not included.\n","vendor":"Adafruit","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":5001,"title":"Default Title","sku":"AF-4314","price":10.05,"on_sale":false,"in_stock":true,"available_quantity":100,"option1":"Default Title"}]}