Adafruit
Adafruit ATECC608 Breakout Board - STEMMA QT / Qwiic
The Adafruit ATECC608 Breakout provides hardware-based cryptographic security for your microcontroller projects. This crypto-authentication chip from Microch...
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.
The 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.
Key Features
- Secure Key Storage – Private keys locked in hardware, cannot be read back
- ECDH Key Agreement – Elliptic curve Diffie-Hellman for secure key exchange
- AES-128 Support – Hardware encrypt/decrypt/signing
- SHA-256/HMAC – Hardware-accelerated hash functions
- Random Number Generator – Hardware RNG for cryptographic operations
- I2C Interface – Fixed address 0x60
- STEMMA QT / Qwiic Connectors – Solderless I2C connection
- Wide Voltage Range – 3.3V or 5V power and logic
Ideal For
- IoT device authentication and security
- Secure boot and firmware verification
- Encrypted communication
- Hardware key management
Package Contents
- 1× Adafruit ATECC608 Breakout Board with STEMMA QT
Jargon buster
Plain-language definitions for the technical terms used above.
- breakout
- A breakout is a small circuit board that makes a tiny or hard-to-solder component easier to connect to with standard pins. It matters because this OLED module can be wired into a microcontroller project without needing to solder directly to the display’s fine contacts.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- I2C address
- An I2C address is the number a device uses so a microcontroller can tell it apart from other devices on the same I2C bus. It matters because two devices with the same fixed address may conflict if used together.
- IoT
- Short for Internet of Things, meaning physical devices that connect to networks or the internet to send data or be controlled remotely. It matters if you want projects such as connected sensors, remote controls or classroom data-logging activities.
- microcontroller
- A microcontroller is a small computer on a chip that runs your program and controls connected inputs and outputs. For this product, it is the part that reads buttons and sensors, drives the display and speaker, and communicates over Bluetooth.
- Qwiic
- Qwiic is a plug-in connector system for I2C devices that uses small 4-pin cables, so you can connect compatible sensors without soldering. It matters because your controller or adapter also needs Qwiic, or you will need a cable or breakout to wire it up.
- STEMMA
- A plug-and-cable connection system used on some maker electronics boards to make wiring simpler. If a product uses STEMMA, you need the matching cable or connector type to plug it in without soldering.
- STEMMA QT
- A small plug-in connector system for I2C boards that lets you connect compatible sensors and controllers without soldering. It matters because it can make wiring faster and less error-prone, especially when adding several small modules to a project.
Find this product in
Brands
Related Tutorials
Free guides on learn.littlebird.com.au
