The ATECC608A is a secure cryptographic authentication and key storage integrated circuit designed to provide strong hardware-based security for embedded systems. It enables secure device identity, encrypted communications, and protection against cloning, counterfeiting, and unauthorized access. Widely used in IoT, industrial, and consumer electronics, the ATECC608A performs cryptographic operations internally, ensuring that private keys are never exposed to the host microcontroller.
Key Features
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Secure hardware-based cryptographic engine
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Supports elliptic curve cryptography (ECC) including ECDSA and ECDH
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Secure key generation, storage, and management
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Hardware random number generator (TRNG)
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Secure boot, firmware authentication, and device identity
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Protection against physical and logical attacks
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Tamper-resistant non-volatile memory
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Low power consumption suitable for battery-powered devices
Technical Specifications
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Cryptographic algorithms: ECC (NIST P-256), SHA-256, HMAC
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Interface: I²C (up to 1 MHz)
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Operating voltage: 2.0V – 5.5V
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Operating temperature: -40°C to +85°C
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On-chip secure EEPROM for keys, certificates, and data
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Unique factory-programmed serial number
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Fast cryptographic execution times
Compatibility
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Arduino (with CryptoAuthLib)
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ESP32, ESP8266
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Raspberry Pi
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STM32 and other I²C-compatible microcontrollers
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Compatible with AWS IoT, Azure IoT, and Google Cloud IoT security frameworks
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