ATECC608B-MAVDA-T

Specialized ICS Overview

The ATECC608B-MAVDA-T is a CryptoAuthentication™ security IC in an 8-UDFN package. It provides hardware-based key storage for up to 16 keys and supports asymmetric operations including ECDSA, ECDH, and NIST P256 curves. Symmetric capabilities include AES-128, SHA-256, and HMAC. The device features a 1 MHz I2C interface and operates on a 2.0V to 5.5V supply. It includes a high-quality RNG compliant with NIST SP 800-90A/B/C standards and two monotonic counters. Electrical parameters specify active current at 3 mA maximum and sleep current below 150 nA.

Specialized ICS Feature Summary

• Hardware-accelerated ECC (ECDSA/ECDH) and symmetric algorithms (AES-128, SHA-256).
• Secure storage for 16 keys/certificates with configurable access locks.
• Supports TLS 1.2/1.3 key management via PRF/HKDF calculation.
• Integrated NIST-compliant Random Number Generator (RNG).

Specialized ICS Applications

• IoT network endpoint key management and exchange.
• Secure boot code signature validation.
• Small message encryption and PII data protection.
• Ecosystem control and anti-cloning authentication.

Specialized ICS Procurement Notes

Verify the ordering suffix 'MAVDA' corresponds to the specific temperature range and packaging configuration required for the design. Confirm that the 8-UDFN exposed pad connection meets the thermal and grounding requirements of the host PCB layout. Ensure the I2C address configuration aligns with system bus constraints before finalizing procurement quantities.

Specialized ICS Selection Notes

Select this model for designs requiring enhanced security over the ATECC608A while maintaining command compatibility. The MAVDA suffix indicates the UDFN package; verify if the -40°C to +100°C extended industrial range is necessary or if the standard -40°C to +85°C range suffices. Consider the 1 MHz I2C speed versus Single-Wire Interface options based on GPIO availability.

Specialized ICS Part Context

This component belongs to the Microchip CryptoAuthentication™ family, succeeding the ATECC608A with improved security profiles and additional features like monotonic counters and volatile key permitting. It offers full backwards compatibility with ATECC508A configurations, facilitating migration from legacy secure elements without significant software modifications.

Specialized ICS Replacement Considerations

The ATECC608A is a compatible predecessor with identical pinouts and command sets. For designs originally using the ATECC508A, the ATECC608B provides a direct upgrade path with enhanced cryptographic support. Verify that any fixed timing delays in existing firmware are updated to accommodate the modified command execution times of the ATECC608B.