SHA104-MAVCZ-T

Overview

The SHA104-MAVCZ-T is a Microchip CryptoAuthentication™ device providing 128-bit symmetric security for accessory and disposable applications. It features hardware-based key storage, MAC generation support, and an internal NIST-certified RNG. The component operates on a 1.65V to 5.5V supply with a nominal sleep current of 130nA. It includes 384 bytes of user EEPROM and a monotonic counter (max 10,000). This specific variant utilizes the I²C interface (400kHz fast-mode) and is housed in an 8-pad UDFN (2mm x 3mm) package supplied in Tape & Reel format.

Feature Summary

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

Applications

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

Procurement Notes

Verify that the ordering suffix 'MAVCZ' corresponds to the specified 8-pad UDFN package and I²C interface configuration. Confirm the delivery format matches the Tape & Reel (TR) requirement indicated by the local product fields. Ensure compatibility with host-side devices such as the SHA105 if shared or diversified key architectures are required.

Selection Notes

Select this model when an I²C interface is preferred over the Single-Wire PWM option. The 8-pad UDFN package is suitable for surface-mount applications requiring a compact footprint. Consider the Trust Platform variants (TrustFLEX/TrustCUSTOM) if pre-provisioning services are needed rather than generic unprovisioned units.

Part Context

The SHA104 belongs to the Microchip CryptoAuthentication™ family, designed as companion devices for microcontrollers. It supports various provisioning flows including Trust&GO, TrustFLEX, and TrustCUSTOM through Microchip's secure provisioning system. The device is agnostic to the host processor architecture.

Replacement Considerations

Generic SHA104 models with different interfaces (SWI-PWM) or packages (SOIC, 3-Lead Contact) may serve as functional alternatives if pinout and communication protocol differences are accommodated in the design.