SHA105-MAVDA-T

Overview

The SHA105-MAVDA-T is a Microchip Technology CryptoAuthentication™ device providing 128-bit symmetric security for host-side authentication. It features secure hardware-based key storage, CheckMAC validation, and an internal NIST SP 800-90A/B/C certified Random Number Generator (RNG). The IC includes field-programmable EEPROM with 384 bytes of user memory, a monotonic counter (max 10,000), and a unique 72-bit serial number. Electrical specifications include a supply voltage range of 1.65V to 5.5V, a 400 kHz Fast-Mode I²C interface, and a nominal sleep current of 130 nA. It operates within a temperature range of -40°C to +105°C.

Feature Summary

• Hardware-accelerated symmetric authentication with SHA-256 support
• Protected storage for one symmetric secret key and one I/O protection key
• Internal high-quality NIST-certified Random Number Generator (RNG)
• Monotonic counter with a maximum count value of 10,000

Applications

• Accessory and disposable authentication
• Ecosystem control
• Anti-cloning protection

Procurement Notes

Verify the ordering suffix 'T' corresponds to Tape & Reel packaging as specified in the Product Identification System. Confirm the 'MA' suffix indicates the 8-pad UDFN package and 'DA' denotes the I²C interface. Ensure the 'V' suffix matches the required Extended Industrial temperature range (-40°C to +105°C). Cross-reference the specific revision level against the latest datasheet DS40002469B.

Selection Notes

Select this component for host-side applications requiring mutual authentication with accessory devices like the SHA104. It is suitable for microcontroller-agnostic designs needing secure key storage and MAC validation. Consider the 8-pad UDFN package dimensions (2 mm x 3 mm) for PCB layout constraints. Verify compatibility with standard-mode and fast-mode I²C specifications up to 400 kHz.

Part Context

This part belongs to the Microchip CryptoAuthentication™ family, designed for high-security cryptographic applications. It serves as a companion device to client-side authenticators, enabling shared or diversified key authentication schemes. The device integrates physical protection mechanisms against invasive attacks and logical defense mechanisms for data transmission security.

Replacement Considerations

SHA105-SSVDA-T: Identical functionality and electrical characteristics but packaged in an 8-Lead SOIC instead of UDFN.