SLB9635TT12FW317XUMA1

Overview

The Infineon SLB9635TT12FW317XUMA1 is a Trusted Platform Module (TPM) compliant with the TCG TPM 1.2 specification, designed for notebook and desktop architectures. It utilizes a 16-bit microcontroller based on the SLE66CXxxPE security controller family in 0.22 µm CMOS technology. The device features an Advanced Crypto Engine supporting RSA up to 2048 bits, a hardware accelerator for SHA-1, and an embedded True Random Number Generator (TRNG). It operates at 3.3 V with an LPC interface and includes EEPROM for firmware and user data.

Feature Summary

• TCG 1.2 Compliant: Embedded software and hardware architecture fully adhere to Trusted Computing Group specifications.
• Cryptographic Capabilities: Includes an Advanced Crypto Engine for RSA (up to 2048-bit keys), SHA-1 hardware acceleration, and a True Random Number Generator.
• Security Architecture: Based on the Infineon SLE66CXxxPE family, featuring tamper detection via tick counter, dictionary attack protection, and memory encryption.
• Interface & Power: Connects via Low Pin Count (LPC) bus operating from a single 33 MHz clock; supports power-down signals and dynamic clock shutdown.

Applications

• Notebook and Desktop PC Security
• Trusted Execution Technology Support
• Secure E-commerce and Communication Platforms

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm that the specific ordering suffix matches the required firmware version and package configuration. Ensure compliance with RoHS standards and check for end-of-life status prior to procurement planning.

Selection Notes

Select this component for systems requiring TCG 1.2 compliance and integration with Windows Vista or later operating systems. Ensure the motherboard design supports the LPC interface and 3.3 V power supply. Consider the 28-TSSOP package dimensions for PCB layout constraints.

Part Context

This part belongs to the Infineon OPTIGA™ TPM family, specifically targeting the legacy TPM 1.2 standard. It serves as a hardware root of trust for computing platforms, differentiating itself from newer TPM 2.0 solutions by its specific cryptographic implementations and compatibility with older OS requirements.

Replacement Considerations

Direct replacements may require firmware adaptation due to differences between TPM 1.2 and TPM 2.0 specifications. Verify pinout compatibility with the existing LPC interface. Consult Infineon documentation for any updated security controllers offering backward compatibility.