ATECC608C-MAHDA-S

Specialized ICS Overview

The ATECC608C-MAHDA-S is a CryptoAuthentication™ security IC featuring hardware-based key storage and cryptographic acceleration. It supports ECDSA, ECDH, AES-128, SHA-256, and HMAC operations using the NIST P256 curve. The device includes a unique 72-bit serial number and an internal RNG compliant with NIST SP 800-90A/B/C standards. It operates on a 2.0V to 5.5V supply voltage with I2C interface speeds up to 1 MHz. The component is housed in an 8-pad UDFN package and functions within a standard industrial temperature range of -40°C to +85°C.

Specialized ICS Feature Summary

• Hardware-accelerated asymmetric (ECDSA/ECDH) and symmetric (AES-128/SHA-256/HMAC) cryptography
• Secure storage for up to 16 keys or certificates with configurable access permissions
• Unique 72-bit factory-programmed serial number for anti-cloning verification
• Internal high-quality random number generator meeting NIST SP 800-90A/B/C requirements

Specialized ICS Applications

• IoT network endpoint key management and TLS session establishment
• Secure boot code signature validation and protected downloads
• Small message encryption and Personally Identifiable Information (PII) protection
• Ecosystem control and hardware anti-counterfeiting

Specialized ICS Procurement Notes

Verify that the specific ordering suffix matches the required Trust Platform variant (e.g., TrustFLEX vs. blank). Confirm the package type corresponds to the design footprint. Ensure the temperature grade aligns with system operating conditions. Check for any specific provisioning requirements if utilizing pre-configured variants.

Specialized ICS Selection Notes

Select this component when high-security authentication is required alongside low power consumption. The I2C interface suits systems with available bus lines, while SWI options exist for GPIO-constrained designs. Consider the 16-slot memory structure for certificate chains or multiple key pairs. Verify compatibility with existing host microcontroller command sets if migrating from older ATECC series devices.

Specialized ICS Part Context

This part belongs to the Microchip CryptoAuthentication family, succeeding the ATECC608A with enhanced security profiles. It maintains backward compatibility with previous generations regarding configuration settings and commands. The device serves as a dedicated hardware security module (HSM) to isolate sensitive keys from the main processor.

Specialized ICS Replacement Considerations

The ATECC608B is the direct successor offering enhanced security features while maintaining functional compatibility. Migration from ATECC608A or ATECC508A requires reviewing updated command timings and configuration zone definitions.