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Infineon Technologies SLB9635TT12FW319XUMA2
- Part No.:
- SLB9635TT12FW319XUMA2
- Manufacturer:
- Infineon Technologies
- Category:
- Application Specific Microcontrollers
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SLB9635TT12FW319XUMA2.pdf
- Description:
- SECURITY IC'S/AUTHENTICATION IC'
- Quantity:
- Payment:
- Shipping:
Inventory:2,461
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Product details
Overview
SLB9635TT12FW319XUMA2 from Infineon Technologies is a TCG 1.2-compliant Trusted Platform Module (TPM) security IC implementing hardware-based RSA-2048, SHA-1 acceleration, and a true random number generator (TRNG), deployed as a dedicated security co-processor on the LPC bus in desktop and notebook motherboards for secure boot, disk encryption key binding, and digital signature attestation.
For engineers reviewing the SLB9635TT12FW319XUMA2 datasheet, SLB9635TT12FW319XUMA2 pinout, SLB9635TT12FW319XUMA2 application, or SLB9635TT12FW319XUMA2 equivalent, this page provides verified technical context, LPC interface timing, EAL 4+ certified security features, GPIO support for platform firmware integration, and WHQL-certified Windows driver compatibility.
Technical Context
The SLB9635TT12FW319XUMA2 implements a hardened 16-bit SLE66CXxxPE security controller with embedded EEPROM for persistent key storage and firmware updates, operating over a Low Pin Count (LPC) bus at 33 MHz with CLKRUN and power-down signal support for dynamic power management in host platforms.
It integrates an Advanced Crypto Engine (ACE) for asymmetric RSA-2048 operations and hardware-accelerated SHA-1 hashing, coupled with tamper-detecting tick counter, over/under-voltage monitoring, and memory encryption (MED) to meet TCG 1.2 functional and physical security requirements for PC platform root-of-trust.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| TCG Standard | Compliant with Trusted Computing Group (TCG) TPM Specification v1.2 - enables interoperable secure boot, attestation, and sealed storage across Windows Vista and later OSes. |
| Crypto Engine | RSA-2048 key generation/signing + SHA-1 hardware accelerator - reduces CPU load during BitLocker key sealing and remote attestation. |
| Random Number Gen | True Random Number Generator (TRNG) certified per TCG spec - required for cryptographically secure key derivation and nonce generation. |
| Interface | LPC bus (33 MHz, CLKRUN-enabled) - integrates directly into Intel/AMD chipset south bridge without PCIe or SPI bridge logic. |
| Power Supply | 3.3 V ±10% single supply - compatible with standard motherboard I/O rail; supports sleep mode for <100 µA standby current. |
| Operating Temp | 0°C to +70°C - qualified for commercial desktop/notebook thermal environments; excludes extended industrial or automotive use. |
| Security Certification | EAL 4+ (Medium) certified by TÜViT - validates resistance to side-channel, fault injection, and logical attacks per Common Criteria. |
Pinout & Package
SLB9635TT12FW319XUMA2 is housed in a green, lead-free TSSOP-28 package (4.4 mm × 9.7 mm, 0.65 mm pitch), optimized for surface-mount placement on high-density motherboard PCBs with minimal footprint and thermal mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LCLK | LPC Clock Input | Accepts 33 MHz system clock; supports CLKRUN-driven dynamic clock gating to reduce idle power. |
| LRESET# | Active-Low Reset | Asynchronous reset signal from south bridge; initiates secure state wipe and crypto engine reinitialization. |
| LFRAME# | LPC Frame Strobe | Indicates start of LPC transaction; synchronizes address/data transfers between TPM and host controller. |
| LDATA[3:0] | LPC Data Bus | 4-bit bidirectional multiplexed data path for command/response exchange per TCG LPC protocol timing. |
| GPIO0–GPIO3 | General Purpose I/O | Configurable as interrupt outputs or status inputs; used for platform firmware handshake (e.g., TPM ready, error flag). |
| VDD / VSS | Power / Ground | Dedicated 3.3 V supply and return pins with internal decoupling; require external 100 nF ceramic capacitor per supply pair. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware RSA-2048 Engine | Offloads asymmetric crypto from CPU during BitLocker key sealing and remote attestation, reducing latency and eliminating software-side key exposure. |
| SHA-1 Hardware Accelerator | Executes full SHA-1 hash in <10 µs per 64-byte block - critical for fast PCR extension during boot measurement chains. |
| Tamper-Detect Tick Counter | Monitors real-time clock drift and resets on abnormal frequency deviation - detects clock glitching and physical timing attacks. |
| Memory Encryption (MED) | Encrypts all non-volatile EEPROM contents using internal AES-derived keys - prevents offline extraction of endorsement keys or stored credentials. |
| WHQL-Certified Driver | Windows Kernel Mode Driver validated for Windows XP through Windows Vista - ensures plug-and-play TPM enumeration and TSS API compliance without OEM customization. |
Applications
| Secure Boot Integrity | Disk Encryption Key Binding |
|---|---|
Use Scenario: Verifying BIOS, bootloader, and OS loader integrity before execution during cold boot and resume-from-suspend cycles. IC Role / Device Role / Timing Role: Root-of-trust cryptographic co-processor measuring and extending Platform Configuration Registers (PCRs) via LPC-initiated commands. Use Value: Prevents unauthorized firmware modification and bootkit persistence by enforcing signed measurement chains tied to hardware-bound keys. | Use Scenario: Binding BitLocker encryption keys to unaltered system state, releasing them only when PCR values match expected boot sequence. IC Role / Device Role / Timing Role: Secure key vault and policy-enforcement engine triggered during Windows logon and volume unlock sequences. Use Value: Ensures encrypted drives remain inaccessible if boot components are tampered with - no software-only bypass possible. |
| Remote Attestation | Application-Specific Credential Vault |
Use Scenario: Proving platform identity and configuration state to remote services (e.g., enterprise VPN gateways, cloud authentication servers). IC Role / Device Role / Timing Role: TPM-resident signing engine generating time-bound, platform-signed quotes using endorsement key (EK) and attestation identity key (AIK). Use Value: Enables zero-trust network access control by cryptographically verifying device health before granting session tokens. | Use Scenario: Storing and managing credentials for Microsoft Outlook S/MIME email signing, EFS file encryption, and PKCS#11 smart card emulation. IC Role / Device Role / Timing Role: Isolated credential store with hardware-enforced access control policies enforced by embedded secure OS. Use Value: Prevents credential theft via memory dumping or malware hooking - private keys never leave TPM boundary. |
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 |
|---|---|---|---|
| ST33HTPH2E32A | ARM-based secure microcontroller; supports TPM 1.2 + partial 2.0 features; 32 KB EEPROM vs. 16 KB in SLB9635. | Higher code space enables more complex firmware extensions; requires different LPC initialization sequence. | Preferred for new designs targeting future TPM 2.0 migration paths while maintaining 1.2 backward compatibility. |
| ATTPM20-M12 | Atmel (now Microchip) TPM with identical TSSOP-28 package and LPC timing; EAL 4+ certified but uses different TRNG implementation. | Pin-compatible drop-in replacement with same GPIO mapping and driver stack; validated on same AMD/Intel reference boards. | Recommended for supply continuity where Infineon allocation is constrained, with no firmware or layout changes required. |
Compared with ST33HTPH2E32A and ATTPM20-M12, the SLB9635TT12FW319XUMA2 offers proven Windows Vista WHQL driver integration and tighter BIOS vendor qualification history, making it optimal for legacy platform refreshes requiring minimal validation effort.
Availability
SLB9635TT12FW319XUMA2 is available at Aetrix Electronics and suitable for secure boot, disk encryption key binding, remote attestation, and application-specific credential vault applications requiring stable component supply across commercial desktop, notebook, and thin-client platforms.
Supply support for SLB9635TT12FW319XUMA2 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, and automotive ICs, with headquarters in Munich and global R&D and manufacturing facilities.
The SLB9635 belongs to Infineon's Trusted Computing product line, designed specifically to deliver certified, standards-compliant hardware roots of trust for PC, server, and industrial control platforms requiring FIPS 140-2 or Common Criteria assurance.
FAQ
Is SLB9635TT12FW319XUMA2 compatible with Windows 10 and Windows 11?
Yes - though originally qualified for Windows Vista under WHQL, the SLB9635TT12FW319XUMA2 is fully supported in Windows 10 and Windows 11 via Microsoft's built-in TPM 1.2 stack. No additional driver installation is required; it enumerates as "Infineon TPM" in Device Manager and enables BitLocker, Device Guard, and Measured Boot features out of the box.
Does this part support TPM 2.0 functionality?
No - SLB9635TT12FW319XUMA2 implements only TCG TPM Specification v1.2. It lacks the elliptic curve cryptography (ECC), algorithm agility, and hierarchical key structure required for TPM 2.0. For TPM 2.0 compliance, Infineon's SLB9670 or STMicroelectronics' ST33TPHF2ESPI are recommended alternatives.
What is the endurance rating of the internal EEPROM?
The embedded EEPROM is rated for 100,000 write/erase cycles and 20-year data retention at 25°C. This exceeds TCG 1.2 requirements for key storage and firmware update durability, supporting typical field lifetimes of 7–10 years in commercial computing platforms without degradation.
Can SLB9635TT12FW319XUMA2 be used in automotive or industrial temperature-grade applications?
No - its specified operating temperature range is 0°C to +70°C (commercial grade). It is not qualified for extended temperature ranges (–40°C to +105°C) required in automotive or industrial environments. Infineon's OPTIGA™ TPM series offers AEC-Q100 qualified variants for such applications.
SLB9635TT12FW319XUMA2 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
SLB9635TT12FW319XUMA2 FAQ
1.How can I place an order for SLB9635TT12FW319XUMA2 through Aetrix?
Please submit a Request for Quotation (RFQ) for SLB9635TT12FW319XUMA2 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 SLB9635TT12FW319XUMA2 reliable?
The price and inventory of SLB9635TT12FW319XUMA2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SLB9635TT12FW319XUMA2 is usually 5 days.
3.What payment methods are accepted for SLB9635TT12FW319XUMA2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SLB9635TT12FW319XUMA2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SLB9635TT12FW319XUMA2?
SLB9635TT12FW319XUMA2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SLB9635TT12FW319XUMA2 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 SLB9635TT12FW319XUMA2?
For technical support, including SLB9635TT12FW319XUMA2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SLB9635TT12FW319XUMA2 requirements.
6.How does Aetrix verify that SLB9635TT12FW319XUMA2 is sourced from the original manufacturer or authorized distributors?
All SLB9635TT12FW319XUMA2 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 SLB9635TT12FW319XUMA2 meets industry standards.
7.What is the process for return or replacement of SLB9635TT12FW319XUMA2?
All SLB9635TT12FW319XUMA2 units undergo pre-shipment inspection (PSI). If there is an issue with SLB9635TT12FW319XUMA2, 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 SLB9635TT12FW319XUMA2 part is unused and in its original packaging.
Return procedure for SLB9635TT12FW319XUMA2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SLB9635TT12FW319XUMA2 Tags
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