ATECC608C-SSVDA-B

Specialized ICS Overview

The ATECC608C-SSVDA-B is a hardware-based cryptographic co-processor designed for secure key storage and authentication. It supports ECDSA, ECDH, AES-128, SHA-256, and HMAC operations within a protected environment. The device features up to 16 slots for keys or certificates and includes a unique 72-bit serial number. Communication is handled via a standard I2C interface operating at speeds up to 1 MHz. It operates on a supply voltage of 2.0V to 5.5V with sleep current below 150 nA. The component is housed in an 8-lead SOIC package.

Specialized ICS Feature Summary

• Hardware-accelerated asymmetric (ECDSA/ECDH) and symmetric (AES-128/SHA-256/HMAC) cryptography
• Secure storage for up to 16 keys, certificates, or data objects
• I2C interface supporting standard mode (100 kHz), fast mode (400 kHz), and FM+ (1 MHz)
• Unique 72-bit factory-programmed serial number

Specialized ICS Applications

• IoT network endpoint security and session key management
• Secure boot code signature validation
• Small message encryption and PII data protection
• Anti-cloning and ecosystem control

Specialized ICS Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to confirm package type and temperature range. Ensure the procurement channel provides valid traceability for security-critical components. Confirm that the delivered units match the specified Trust Platform variant if pre-provisioning is required.

Specialized ICS Selection Notes

Select this component when hardware-level key protection is mandatory. The I2C interface requires external pull-up resistors for proper operation. Consider the extended industrial temperature range (-40°C to +100°C) if the application environment exceeds standard limits. Verify GPIO availability if Single-Wire Interface (SWI) is preferred over I2C.

Specialized ICS Part Context

This part belongs to the CryptoAuthentication™ family, succeeding the ATECC608A with enhanced security profiles while maintaining command compatibility. It serves as a dedicated security element for microcontrollers, offloading cryptographic tasks to prevent software-side key exposure.

Specialized ICS Replacement Considerations

The ATECC608B is functionally compatible and recommended for migration from ATECC608A designs. Verify pinout and configuration byte definitions before swapping. No direct drop-in replacement exists outside the ATECC608x series without firmware adaptation.