AT88SC118-SH-CM

Specialized ICS Overview

The AT88SC118-SH-CM is a CryptoCompanion security chip designed to partner with Atmel CryptoRF and CryptoMemory devices. It securely implements host algorithms, stores secrets, and verifies firmware digests using hardware-based protection. The device supports the F2 algorithm and SHA-1 cryptography, featuring a 64-bit mutual authentication protocol. It includes a high-quality random number generator, metal shielding, and data scrambling for nonvolatile memory. Electrical specifications include a supply voltage range of 2.7V to 3.6V, a maximum supply current of 5mA at 400kHz, and standby current below 15µA. It operates within an industrial temperature range of -40°C to +85°C.

Specialized ICS Feature Summary

• Hardware-based secure storage and execution of cryptographic keys and algorithms
• Supports SHA-1 standard and 64-bit Mutual Authentication Protocol
• Integrated Random Number Generator (RNG) and up to 232 bytes of configurable user data
• 8-lead SOIC package with 2-Wire Serial Interface (TWI) compatibility

Specialized ICS Applications

• Networking and Communications systems requiring secure authentication
• Host-side crypto functions for CRF device integration
• Secure key management and diversification in embedded systems

Specialized ICS Procurement Notes

Verify the specific ordering suffix against the manufacturer's current catalog, as packaging options such as bulk or tape-and-reel may vary. Confirm that the component meets RoHS compliance standards if required by the target assembly process. Ensure the selected variant matches the necessary memory locking state upon shipment, as this cannot be altered after the lock command is executed.

Specialized ICS Selection Notes

Select the AT88SC118-SH-CM when a dedicated hardware companion is needed for CryptoRF or CryptoMemory tags to protect host secrets. This component is suitable for applications requiring SHA-1 hashing and mutual authentication without exposing keys to the main processor. Consider the 2.7V–3.6V operating range and TWI interface constraints during system design.

Specialized ICS Part Context

This component belongs to the CryptoCompanion™ series, specifically engineered to complement Atmel's CryptoRF and CryptoMemory product lines. It serves as a secure element that offloads cryptographic operations from the main host controller, enhancing overall system security against reverse-engineering and physical attacks.

Specialized ICS Replacement Considerations

Direct replacements must support the same TWI interface, voltage range, and cryptographic capabilities. Verify pinout compatibility with the 8-SOIC package. Note that the AT88SC118-SH-CN variant offers a different default memory locking state (Unlocked/Confidential) compared to the SH variant.