ATECC108-SSHCZ-B

Specialized ICS Overview

The ATECC108-SSHCZ-B is a hardware authentication device from the CryptoAuthentication™ family, designed for secure product validation and anti-counterfeiting. It features an integrated high-speed public key crypto engine supporting ECDSA with NIST P256, B283, and K283 curves, alongside SHA-256 hashing. The component includes 8.5Kb EEPROM for up to 16 keys, 512 OTP bits, and a unique 72-bit serial number. It operates on a single-wire interface within a supply voltage range of 2.0V to 5.5V, consuming less than 150nA in sleep mode.

Specialized ICS Feature Summary

• Supports FIPS186-3 ECDSA signatures using NIST standard P256, B283, and K283 elliptic curves.
• Includes 8.5Kb EEPROM for key storage and 512 One Time Programmable (OTP) bits.
• Features a guaranteed unique 72-bit serial number and internal FIPS random number generator.
• Operates via Single-Wire Interface with <150nA sleep current and 2.0V–5.5V supply range.

Specialized ICS Applications

• Anti-clone protection for accessories, daughter cards, and consumables.
• Secure boot validation and software anti-piracy measures.
• Network access control and password handling.
• Authenticated or encrypted network communications.

Specialized ICS Procurement Notes

This component is marked as Not Recommended for New Designs (NRND) and has been replaced by the ATECC108A series. Verify end-of-life status and availability constraints before procurement. Ensure compatibility with existing system designs if utilizing legacy stock.

Specialized ICS Selection Notes

Select this part for applications requiring single-wire communication to minimize GPIO usage. It is suitable for environments needing robust ECC-based authentication without I2C bus complexity. Consider the ATECC108A for new projects due to the NRND status of this model.

Specialized ICS Part Context

Manufactured originally by Atmel Corporation, now part of Microchip Technology. This specific SKU belongs to the ATECC108 series, which serves as a predecessor to the enhanced ATECC108A family. The 'B' suffix indicates bulk tube packaging in an 8-SOIC package.

Specialized ICS Replacement Considerations

The datasheet explicitly states that the ATECC108 is replaced by the ATECC108A. Designers should evaluate the ATECC108A series for new implementations to ensure long-term supply support and updated specifications.

Specialized ICS FAQ

What cryptographic algorithms does the ATECC108 support?

It supports FIPS186-3 Elliptic Curve Digital Signature Algorithm (ECDSA) with NIST standard P256, B283, and K283 curves, as well as SHA-256 hashing with HMAC options.

How many keys can be stored in the ATECC108?

The device provides 8.5Kb of EEPROM memory capable of storing up to 16 keys, along with miscellaneous read/write data and security configuration.

What is the power consumption in sleep mode?

The ATECC108 consumes less than 150nA in sleep mode, making it suitable for low-power battery-operated applications.