Manufacturer: Microchip Technology

Key Specifications

• Package: UDFN-8
• Interface: I2C (1MHz)
• Crypto: ECDSA/ECDH, AES-128, SHA-256
• Key Storage: 16 slots (secure)
• Voltage: 2.0V - 5.5V
• Temperature: -40°C to +85°C
• Memory: 16.5 Kb EEPROM (to be verified)
• Certifications: FIPS 140-2 (to be verified)

The ATECC608A-TNGTLSU-G from Microchip Technology is a dedicated secure element designed to provide robust hardware-based security for embedded systems. It integrates a wide range of cryptographic functions, including ECDSA and ECDH for asymmetric authentication and key exchange, AES-128 for symmetric encryption, and SHA-256 for hashing. The device is housed in a compact UDFN-8 package and communicates via a standard I2C interface, making it suitable for space-constrained applications.

Key Features

• Hardware-based secure key storage with 16 slots, protecting sensitive data from software attacks
• Support for ECDSA, ECDH, AES-128, and SHA-256 algorithms
• I2C interface with speeds up to 1 MHz
• Wide operating voltage range from 2.0V to 5.5V
• Extended temperature range from -40°C to +85°C
• Low power consumption for battery-operated devices
• High reliability with EEPROM endurance (to be verified)

Applications

• IoT device authentication and secure boot
• Secure firmware update verification
• Cloud service authentication (e.g., AWS IoT, Azure)
• Anti-counterfeiting protection for accessories and consumables
• Secure data storage for medical and industrial devices

Selection Guidance

When selecting the ATECC608A-TNGTLSU-G, consider the required cryptographic operations and the number of keys needed. The device offers 16 key slots, which can be configured for different purposes. Ensure that the I2C bus voltage and speed are compatible with your host microcontroller. For applications requiring FIPS 140-2 certification, verify the specific part variant and firmware version. The UDFN package is ideal for compact designs, but for prototyping, a SOIC or other package may be more convenient. Always refer to the latest datasheet for detailed electrical specifications and design guidelines.