SHA104-MAVDA-T

Overview

The SHA104-MAVDA-T is a Microchip CryptoAuthentication™ member providing 128-bit symmetric security for disposable and ecosystem control 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 temperatures from -40°C to +105°C. It utilizes an I²C interface at 400kHz and ships in an 8-pad UDFN (2mm x 3mm) 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: 384-byte user memory with 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 validation
• Challenge-response or CheckMAC operations with host-side security devices

Procurement Notes

Verify the MAVDA suffix indicates the specific Tape & Reel packaging configuration for the 8-pad UDFN variant. Confirm that the ordering code aligns with the required I/O interface type, as the SHA104 family offers distinct I²C and SWI-PWM versions. Ensure provisioning requirements match the Trust Platform service level needed for the application.

Selection Notes

Select this component when 128-bit symmetric security is sufficient for accessory authentication. Choose the I²C version over SWI-PWM if standard bus compatibility is preferred. Verify that the 8-pad UDFN footprint fits the PCB layout constraints. Consider the monotonic counter limit of 10,000 cycles if consumption logging is critical.

Part Context

The SHA104 belongs to the Microchip CryptoAuthentication™ family, designed as companion devices for microcontrollers. It complements host-side devices like the SHA105 for secure ecosystems. Unlike asymmetric solutions such as the ATECC608A, it focuses on cost-effective symmetric key management for high-volume disposable items.

Replacement Considerations

SHA104-MAHDA-S serves as a direct pin-compatible alternative in the same 8-pad UDFN package. For applications requiring asymmetric cryptography, the ECC204 or ATECC608A are functional replacements within the same product family.