ATECC608C-TCSMU

Specialized ICS Overview

The Microchip ATECC608C-TCSMU is a CryptoAuthentication™ hardware security module providing secure key storage and cryptographic acceleration. It supports up to 16 keys, certificates, or data slots with protected storage. Key algorithms include ECDSA (FIPS 186-3), ECDH (NIST P256), SHA-256, HMAC, and AES-128. The device features a JIL HIGH rating, NIST SP 800-90A/B/C certified TRNG, and a unique 72-bit serial number. It operates on a 2.0V to 5.5V supply with <150 nA sleep current. Communication interfaces include 1 MHz I2C and Single-Wire Interface (SWI). This specific variant is Trust Custom provisioned in an 8-pad UDFN package.

Specialized ICS Feature Summary

• Hardware-based secure storage for up to 16 keys, certificates, or data
• Supports ECDSA, ECDH (P256), SHA-256, HMAC, and AES-128 encryption
• JIL HIGH rated vulnerability resistance and NIST SP 800-90A/B/C certified TRNG
• Dual interface options: 1 MHz I2C and High-Speed Single Wire Interface (SWI)

Specialized ICS Applications

• IoT network endpoint key management and exchange
• Secure boot and protected firmware download
• Small message encryption and PII data protection
• Ecosystem control and anti-counterfeiting

Specialized ICS Procurement Notes

Verify the 'TCSMU' suffix indicates Trust Custom provisioning status rather than standard factory configuration. Confirm the 8-UDFN (2x3) package matches the design footprint. Ensure the selected temperature range aligns with system requirements, as extended industrial ranges are available. Check for specific provisioning service agreements required for custom key injection prior to deployment.

Specialized ICS Selection Notes

Select this component when high-security authentication is required alongside minimal GPIO usage. The SWI interface option reduces pin count compared to standard I2C. Ensure the host MCU supports the required wake-up timing and command set. Compare against ATECC608B if migration from older designs is planned, noting that ATECC608C offers enhanced security while maintaining compatibility.

Specialized ICS Part Context

The ATECC608C belongs to the CryptoAuthentication™ family, succeeding the ATECC608B with improved security features. The -TCSMU designation specifies the Trust Custom provisioning service and the 8-pad UDFN package. It serves as a hardware root of trust for embedded systems requiring robust identity management and secure key handling without exposing private keys to the main processor.

Specialized ICS Replacement Considerations

ATECC608B is a compatible predecessor with identical command sets but lower security ratings. ATECC508A and ATECC608A are older generations requiring software adaptation. Direct replacement requires verifying that the provisioning state of the substitute matches the application's security requirements.