SHA104-SSVCZ-T

Overview

The Microchip SHA104-SSVCZ-T is a CryptoAuthentication™ security IC providing 128-bit symmetric key authentication. It features hardware-based secure key storage, MAC generation support, and an internal NIST-certified random number generator. The device includes 384 bytes of user-accessible EEPROM with 40-year data retention at +55°C and a monotonic counter limited to 10,000 uses. It operates on a 1.65V to 5.5V supply with a nominal sleep current of 130nA. This specific part utilizes the I2C interface and is housed in an 8-SOIC package.

Feature Summary

• Hardware-accelerated cryptographic engine supporting SHA-256 for MAC generation
• Protected memory storing one symmetric secret key plus 384 bytes of user EEPROM
• Integrated high-quality RNG compliant with NIST SP 800-90A/B/C standards
• Unique 72-bit serial number and monotonic counter (max 10,000 counts)

Applications

• Accessory and disposable component authentication
• Ecosystem control and anti-cloning validation
• Challenge-response or shared-key authentication systems

Procurement Notes

Verify that the SS suffix confirms the 8-Lead SOIC package selection. Ensure the VCCZ suffix aligns with the required temperature range and interface specifications for the target application environment before finalizing procurement.

Selection Notes

Select this model when an I2C interface is preferred over Single-Wire PWM. The 8-SOIC package is suitable for standard surface-mount assembly. Consider the Trust Platform variants if pre-provisioned credentials are required instead of custom provisioning.

Part Context

This component belongs to the Microchip CryptoAuthentication™ family, designed as companion devices for microcontrollers. It addresses security needs in IoT and consumer electronics by offloading cryptographic operations from the main processor.

Replacement Considerations

SHA105 serves as the host-side counterpart for shared-key implementations. For single-wire applications, consider SWI-interface variants within the same SHA104 series.