SHA104-SSVDA-T

Overview

The SHA104-SSVDA-T is a Microchip CryptoAuthentication™ member providing 128-bit symmetric security for accessory and disposable applications. It features hardware-based key storage, MAC generation support, and an internal NIST SP 800-90A/B/C certified RNG. The device includes field-programmable EEPROM with 384 bytes of user memory and supports a monotonic counter up to 10,000 uses. Electrical specifications include a supply voltage range of 1.65V to 5.5V, nominal sleep current of 130nA, and operating temperature from -40°C to +105°C. It offers I2C (400kHz) or SWI-PWM interfaces and ships in an 8-SOIC package.

Feature Summary

• Hardware-accelerated cryptographic authentication with protected symmetric key storage
• Internal high-quality NIST SP 800-90A/B/C Random Number Generator (RNG)
• Field-programmable EEPROM with 384-byte user memory and 40-year data retention at +55°C
• Monotonic counter with max count value of 10,000 attachable to keys for limited use

Applications

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

Procurement Notes

Verify the ordering suffix 'SSVDA' corresponds to the specific 8-Lead SOIC package and Tape & Reel delivery format. Confirm that the selected variant matches the required interface type (I2C vs SWI) as specified in the product identification system documentation. Ensure compatibility with the host system's voltage levels within the 1.65V to 5.5V range.

Selection Notes

Select the SHA104-SSVDA-T when an 8-SOIC surface-mount package is required for the design. Choose this part over UDFN or 3-lead contact variants if standard PCB footprinting is preferred. Verify interface requirements; ensure the application utilizes the I2C interface compatible with the 'SS' package designation rather than the Single-Wire Interface options available in other suffixes.

Part Context

The SHA104 belongs to the Microchip CryptoAuthentication™ family designed for companion device authentication. It operates independently of microcontrollers and integrates with host-side devices like the SHA105 for enhanced security protocols such as CheckMAC operations. This series targets cost-sensitive, high-volume applications requiring robust physical protection against invasive attacks.

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source material. For equivalent functionality, consider other members of the CryptoAuthentication™ family such as the ATSHA204A or ATECC608A, ensuring interface and memory requirements align with the specific application needs.