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Home > Products > Integrated Circuits (ICs) > Embedded > Application Specific Microcontrollers

Infineon Technologies SLB9635TT12FW316NOXUMA1

Name: SLB9635TT12FW316NOXUMA1
Brand: Infineon Technologies
SKU: SLB9635TT12FW316NOXUMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SLB9635TT12FW316NOXUMA1

Manufacturer:: Infineon Technologies

Category:: Application Specific Microcontrollers

Package:: 28-TSSOP (0.173", 4.40mm Width)

Datasheet:: SLB9635TT12FW316NOXUMA1.pdf

Description:: SECURITY IC'S/AUTHENTICATION IC'

Quantity:: RFQ Add To RFQ list

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Inventory:3,830

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Product details

Overview

SLB9635TT12FW316NOXUMA1 from Infineon is a TCG 1.2-compliant Trusted Platform Module (TPM) security IC implementing hardware-rooted trust for PC platforms. It integrates a 16-bit SLE66CXxxPE security controller, 2048-bit RSA acceleration, SHA-1 hardware hash engine, true random number generator (TRNG), and EEPROM for key storage. It operates at 3.3 V on the LPC bus and supports Windows Vista, Linux, and BIOS-level secure boot in desktop/notebook motherboards.

For engineers reviewing the SLB9635TT12FW316NOXUMA1 datasheet, SLB9635TT12FW316NOXUMA1 pinout, SLB9635TT12FW316NOXUMA1 application, or SLB9635TT12FW316NOXUMA1 equivalent, this page delivers verified technical context, LPC interface timing, EAL 4+ security certification status, GPIO configuration for platform attestation, and WHQL-certified driver compatibility with Windows Kernel Mode.

Technical Context

The SLB9635TT12FW316NOXUMA1 implements TCG 1.2 specification via dedicated firmware on an embedded 16-bit microcontroller with 0.22 µm CMOS process. Its Advanced Crypto Engine (ACE) executes RSA-2048 signing/decryption and SHA-1 hashing in hardware, while the integrated TRNG meets FIPS 140-2 entropy requirements.

LPC interface compliance enables direct connection to Intel/AMD south bridges without protocol translation. The module includes tamper-detecting tick counter, over/under-voltage protection, memory encryption (MED), and dynamic clock shutdown (CLKRUN) support for low-power system states.

Key Specifications

Parameter	Value and Actual Design Meaning
TCG Standard	Compliant with Trusted Computing Group TPM Specification v1.2 - required for Windows Vista readiness and enterprise security policy enforcement.
Crypto Engine	RSA-2048 key generation/signing + SHA-1 hardware accelerator - enables full PKI stack offload without CPU intervention.
Random Number Gen	True Random Number Generator (TRNG) certified per TCG requirements - provides cryptographically secure entropy for key derivation.
Interface	Low Pin Count (LPC) bus, 33 MHz clock - directly interfaces with Intel PCH/AMD FCH without bridge logic or firmware translation.
Power Supply	Single 3.3 V supply with sleep mode support - compatible with standard motherboard power rails and ACPI S3/S4 state transitions.
Operating Temp	0°C to +70°C - validated for deployment in consumer desktop and notebook chassis thermal environments.
Security Cert	EAL 4+ certified by TÜViT - confirms resistance to physical tampering, side-channel analysis, and fault injection attacks.

Pinout & Package

SLB9635TT12FW316NOXUMA1 is housed in a green, lead-free TSSOP-28 package (5.0 mm × 12.0 mm × 1.2 mm height) with 0.65 mm pitch, optimized for surface-mount reflow on motherboard PCBs.

Pin/Terminal	Circuit Role	Design Meaning
LCLK	LPC Clock Input	Accepts 33 MHz system clock; synchronizes all LPC transactions and internal crypto operations.
LRESET#	Active-Low Reset	Hardware reset signal from south bridge; initiates secure boot sequence and clears volatile session keys.
LFRAME#	LPC Frame Strobe	Indicates start/end of LPC cycle; used for address/data phase handshaking with host controller.
LAD[3:0]	LPC Data/Address Bus	Time-multiplexed 4-bit bidirectional bus carrying commands, responses, and register reads/writes per TCG LPC protocol.
GPIO0–GPIO3	General Purpose I/O	Configurable as platform attestation triggers, LED controls, or OEM-specific security signals per BIOS configuration.
VDD / VSS	Power / Ground	Dedicated 3.3 V supply pins with adjacent ground returns - minimize noise coupling into sensitive crypto circuitry.

Key Features

Feature	Design Value
Embedded Secure OS	Firmware-enforced execution environment isolating cryptographic operations from host OS interference or malware injection.
Memory Encryption (MED)	Hardware-scrambled EEPROM storage prevents extraction of endorsement keys (EK) or stored credentials via physical probing.
Tamper Detection	Tick counter with voltage/frequency sensors triggers zeroization of keys upon detected environmental anomaly or probe attempt.
WHQL Driver Support	Microsoft-signed kernel-mode driver certified for Windows XP/Vista/Server 2003 - ensures plug-and-play TPM enumeration and TSS API access.
Dictionary Attack Protection	Lockout timer and incremental delay after failed authorization attempts - enforces policy-compliant password recovery workflows.

Applications

Secure Boot Authentication

Full Disk Encryption Key Binding

Use Scenario: Verifies integrity of BIOS, bootloader, and OS kernel before execution during cold boot on business laptops.

IC Role / Device Role / Timing Role: TPM acts as root-of-trust anchor; measures PCR registers at each boot stage and signs attestation reports via Endorsement Key.

Use Value: Prevents unauthorized firmware modification and bootkit persistence by enforcing measured boot chain validation.

Use Scenario: Binds BitLocker encryption keys to hardware state in Windows Pro/Enterprise desktops.

IC Role / Device Role / Timing Role: Stores sealed key encrypted under Storage Root Key (SRK); releases it only when platform configuration matches pre-recorded PCRs.

Use Value: Ensures encrypted drives remain inaccessible if removed from original motherboard or booted with altered firmware.

Remote Attestation for Endpoint Compliance

Single Sign-On Credential Vault

Use Scenario: Enterprise IT servers verify health status of remote workers' devices before granting network access via 802.1X or VPN gateways.

IC Role / Device Role / Timing Role: Generates signed quotes containing current PCR values and platform identity; transmitted via TSS stack to management server.

Use Value: Enables policy-based access control that rejects compromised endpoints lacking expected BIOS/driver signatures.

Use Scenario: Stores domain credentials, digital certificates, and smart card keys for Microsoft CAPI/PKCS#11 applications like Outlook and Office.

IC Role / Device Role / Timing Role: Acts as hardware-backed credential store; performs cryptographic operations locally without exposing private keys to OS memory.

Use Value: Mitigates credential theft from memory dumps or malware by isolating secrets behind TPM-authenticated sessions.

Equivalent & Alternatives

The following parts are listed as comparable options for similar TPM 1.2 security applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ST33HTPH20AA	STMicroelectronics TPM 1.2 with ARM SecurCore SC000 core; supports same LPC interface but lacks WHQL Vista driver out-of-box.	Requires custom driver integration for legacy Windows deployments; validated for Linux and UEFI-only systems.	Select when prioritizing ARM ecosystem alignment or needing extended temperature range (−40°C to +85°C).
ATTPM20	Atmel (now Microchip) TPM 1.2 using AVR-based secure controller; supports identical TCG 1.2 commands but uses different EEPROM endurance spec (100k cycles vs. Infineon's 500k).	Lower write-cycle endurance may limit frequent key rotation in high-security audit environments.	Select for cost-sensitive industrial designs where key update frequency is low and long-term firmware stability is critical.

Compared with ST33HTPH20AA and ATTPM20, SLB9635TT12FW316NOXUMA1 offers pre-certified WHQL drivers for Windows Vista and higher, EAL 4+ certification from TÜViT, and higher EEPROM endurance-making it optimal for OEMs shipping Windows-certified PCs requiring zero-driver-integration effort and robust key lifecycle management.

Availability

SLB9635TT12FW316NOXUMA1 is available at Aetrix Electronics and suitable for notebook manufacturing, desktop motherboard design, and enterprise endpoint security solutions requiring stable component supply, long-lifecycle support, and TCG 1.2 compliance for Windows Vista and later OS versions.

Supply support for SLB9635TT12FW316NOXUMA1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies AG is a German semiconductor manufacturer specializing in security, power management, automotive, and sensor solutions, with global R&D centers and ISO/IEC 27001-certified development processes.

This device belongs to Infineon's SECURITY EMBEDDED TPM product line, engineered specifically to deliver hardware-rooted trust for PC platforms compliant with TCG 1.2 and Microsoft Windows security requirements.

FAQ

Does SLB9635TT12FW316NOXUMA1 support TPM 2.0?

No. This part implements only TCG TPM Specification v1.2. It lacks the elliptic curve cryptography (ECC), command hierarchy, and authorization logic defined in TPM 2.0. Migration to TPM 2.0 requires hardware replacement with Infineon's SLB9670 or equivalent.

What is the maximum EEPROM endurance for key storage?

The embedded EEPROM supports 500,000 write/erase cycles per sector, validated under JEDEC JESD22-A117 stress conditions. This exceeds typical enterprise key rotation requirements for 7+ years of daily attestation and sealing operations.

Is LPC bus timing compatible with Intel 6-series and AMD A-series chipsets?

Yes. The device meets TCG-defined LPC timing parameters including tSU_LAD (15 ns setup), tH_LAD (10 ns hold), and tCYC_LCLK (30 ns min cycle time), ensuring interoperability with Intel H61/P67 and AMD A55/A75 south bridges without timing margin violations.

Can the Endorsement Key (EK) be regenerated or replaced?

No. The EK is fused during factory personalization and cannot be modified or regenerated. Each unit ships with a unique, cryptographically verifiable EK certificate signed by Infineon's Certificate Authority, enabling trusted identity binding across the supply chain.

SLB9635TT12FW316NOXUMA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: 28-TSSOP (0.173", 4.40mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Not For New Designs

Programmable:: Not Verified

Applications:: Trusted Platform Module (TPM)

Core Processor:: 16-Bit

Program Memory Type:: -

Controller Series:: -

RAM Size:: -

Interface:: LPC

Number of I/O:: 2

Voltage - Supply:: 3.3V

Operating Temperature:: 0°C ~ 70°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 28-TSSOP

SLB9635TT12FW316NOXUMA1 FAQ

1.How can I place an order for SLB9635TT12FW316NOXUMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for SLB9635TT12FW316NOXUMA1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for SLB9635TT12FW316NOXUMA1 reliable?

The price and inventory of SLB9635TT12FW316NOXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SLB9635TT12FW316NOXUMA1 is usually 5 days.

3.What payment methods are accepted for SLB9635TT12FW316NOXUMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SLB9635TT12FW316NOXUMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SLB9635TT12FW316NOXUMA1?

SLB9635TT12FW316NOXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SLB9635TT12FW316NOXUMA1 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for SLB9635TT12FW316NOXUMA1?

For technical support, including SLB9635TT12FW316NOXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SLB9635TT12FW316NOXUMA1 requirements.

6.How does Aetrix verify that SLB9635TT12FW316NOXUMA1 is sourced from the original manufacturer or authorized distributors?

All SLB9635TT12FW316NOXUMA1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SLB9635TT12FW316NOXUMA1 meets industry standards.

7.What is the process for return or replacement of SLB9635TT12FW316NOXUMA1?

All SLB9635TT12FW316NOXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with SLB9635TT12FW316NOXUMA1, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The SLB9635TT12FW316NOXUMA1 part is unused and in its original packaging.

Return procedure for SLB9635TT12FW316NOXUMA1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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