CJMCU: ATECC608A, Cryptographic Coprocessor Breakout Board

Secure Your IoT Nodes with Hardware-Based Crypto Acceleration

The CJMCU ATECC608A Breakout Board is a high-performance, low-power cryptographic co-processor designed to bring enterprise-grade security to your IoT projects, smart home devices, and embedded systems. Featuring the Microchip ATECC608A CryptoAuthentication™ chip, this module offloads secure key storage, cryptographic workflows, and encryption algorithms from your main microcontroller.

Key Features & Capabilities

• Hardware Key Storage: Protected storage for up to 16 keys, certificates, or data blocks.
• Cryptographic Accelerators: Hardware support for ECDSA, ECDH, AES-128, and SHA-256.
• High-Quality RNG: Integrated high-endurance True Random Number Generator.
• Unique Serial Number: Factory-programmed 72-bit unique ID for easy device tracking.
• Interface: Standard I2C interface, making it universally compatible with Arduino, Raspberry Pi, ESP32, and STM32.

Technical Specifications

• Operating Voltage: 2.0V to 5.5V DC
• Communication Protocol: I2C (Up to 1 Mb/s)
• Form Factor: Compact CJMCU breakout board with pre-routed pinouts
• Active Current: < 2 mA
• Sleep Current: < 150 nA

Common Applications

• IoT Node Authentication and Cloud Onboarding (AWS IoT, Microsoft Azure, Google Cloud)
• Secure Boot validation and firmware integrity checks
• Ecosystem control and anti-counterfeiting protection for peripherals
• Hardware-accelerated encryption for TLS/SSL connections