ATECC108-SSHDA-B

Specialized ICS Overview

The ATECC108-SSHDA-B is a CryptoAuthentication™ security IC designed for secure authentication and product validation. It features a high-speed public key crypto engine supporting ECDSA with NIST P256, B283, and K283 curves, alongside SHA-256 hashing. The device includes 8.5Kb EEPROM for up to 16 keys, 512 OTP bits, and a unique 72-bit serial number. It operates on a 2.0V–5.5V supply with <150nA sleep current. This specific model uses an I2C interface in an 8-SOIC package, supplied in tubes.

Specialized ICS Feature Summary

• Supports FIPS186-3 ECDSA (P256, B283, K283) and SHA-256/HMAC algorithms
• Includes 8.5Kb EEPROM and 512 One Time Programmable (OTP) bits
• Features guaranteed unique 72-bit serial number and internal FIPS RNG
• Operates at 1MHz I2C speed with 2.0V–5.5V voltage range

Specialized ICS Applications

• Anti-counterfeiting for accessories and consumables
• Secure boot validation and software anti-piracy
• Network access control and password handling

Specialized ICS Procurement Notes

This component is marked as Not Recommended for New Designs (NRND). It has been replaced by the ATECC108A series. Verify availability and lifecycle status before procurement. Ensure design compatibility with the legacy ATECC108 specifications if used in existing systems.

Specialized ICS Selection Notes

Select this part for legacy designs requiring I2C communication in an 8-SOIC tube package. For new projects, consider the ATECC108A which offers updated features. Ensure the system supports the required 2.0V to 5.5V operating voltage and 1MHz I2C bus speed.

Specialized ICS Part Context

The ATECC108-SSHDA-B belongs to the Atmel CryptoAuthentication™ family. It serves as a hardware-based security solution for embedded systems. The 'SSHDA' suffix indicates the SOIC-8 package with I2C interface, while '-B' denotes bulk tube packaging. It is a predecessor to the ATECC108A.

Specialized ICS Replacement Considerations

The datasheet explicitly states that the ATECC108 is not recommended for new designs and is replaced by the ATECC108A. Engineers should evaluate the ATECC108A for new implementations due to potential feature enhancements and continued support.