SHA104-TFLXAUTHU-HV

Overview

The SHA104-TFLXAUTHU-HV is a pre-provisioned security IC from Microchip’s CryptoAuthentication family, designed for symmetric authentication in disposable and accessory applications. It features hardware-protected key storage, a NIST-compliant random number generator, and anti-tamper mechanisms. The device supports I2C (up to 400 kHz) and single-wire serial interfaces, operating within a 1.65V to 5.5V range. It includes 384 bytes of user EEPROM and a monotonic counter. The HV suffix indicates high-voltage tolerance or specific environmental ratings as defined by the manufacturer.

Feature Summary

• Pre-provisioned symmetric authentication engine with hardware-protected key storage
• Integrated NIST SP 800-90A/B/C compliant random number generator
• Anti-tamper physical protection against invasive attacks
• Supports CheckMAC operations for enhanced host-side security

Applications

• Disposable device authentication
• Accessory verification in ecosystems
• Consumable identification
• Anti-counterfeiting measures

Procurement Notes

Verify the exact datasheet version and ordering suffixes to confirm voltage ranges and package types. Ensure compatibility with host controller interface requirements. Confirm that the pre-provisioned nature meets your security provisioning strategy without requiring on-site key injection.

Selection Notes

Choose this component for low-cost, high-security symmetric authentication where pre-provisioning is preferred. It suits applications requiring robust physical protection and simple interface protocols like I2C or SWI. Consider the HV variant if specific voltage or environmental tolerances are required beyond standard specifications.

Part Context

Part of the Microchip CryptoAuthentication™ family, specifically tailored for trust platform implementations. The SHA104 series focuses on cost-effective security for mass-produced disposable items, leveraging hardware-based cryptographic functions to prevent cloning and unauthorized access.

Replacement Considerations

SHA104-TFLXAUTH

FAQ

What is the primary security function of the SHA104-TFLXAUTHU-HV?

It provides 128-bit symmetric authentication using hardware-protected keys and supports CheckMAC operations for secure pairing.

Does the SHA104 require external components for operation?

No, it integrates a high-quality RNG, protected memory, and cryptographic engines internally, requiring only power and interface connections.