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Infineon Technologies SLB9655TT12FW432XUMA2
- Part No.:
- SLB9655TT12FW432XUMA2
- Manufacturer:
- Infineon Technologies
- Category:
- Application Specific Microcontrollers
- Package:
- -
- Datasheet:
-
SLB9655TT12FW432XUMA2.pdf
- Description:
- IC SECURITY TPM I2C 28TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,697
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Product details
Overview
SLB9655TT12FW432XUMA2 from Infineon Technologies is a discrete Trusted Platform Module (TPM) 2.0 security IC implementing FIPS 140-2 Level 3 validated cryptographic functions, supporting SHA-256, RSA-2048, ECC-256, and AES-128 encryption, with I²C interface and integrated hardware random number generator, deployed in server boot authentication and firmware integrity verification.
For engineers reviewing the SLB9655TT12FW432XUMA2 datasheet, SLB9655TT12FW432XUMA2 pinout, SLB9655TT12FW432XUMA2 application, or SLB9655TT12FW432XUMA2 equivalent, key selection criteria include TPM 2.0 compliance level, I²C timing budget, tamper-evident package construction, and certified cryptographic algorithm support for secure boot chain validation.
Technical Context
The SLB9655TT12FW432XUMA2 implements a dedicated ARM SecurCore SC300 CPU with TrustZone-enabled execution environment, executing firmware verified via ROM-based root of trust. It integrates dedicated cryptographic accelerators for asymmetric key generation, digital signature, and hash computation - all operating independently of host system resources.
It supports TPM 2.0 Main Specification Part 1 (Architecture) and Part 2 (Structures), compliant with PC Client Platform TPM Profile (PTP) v1.03 and Server Platform TPM Profile (SPTP) v1.02, with configurable locality levels and hierarchical key storage using endorsement, storage, and attestation key hierarchies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| TPM Standard | TPM 2.0 Main Specification compliant, certified to FIPS 140-2 Level 3 physical security requirements |
| Interface | I²C at up to 1 MHz - enables direct connection to host PCH or BMC without protocol translation logic |
| Crypto Engine | Dedicated hardware accelerators for RSA-2048 sign/verify, ECC-256 key exchange, SHA-256 hashing, and AES-128 block cipher |
| Random Number | On-die TRNG meeting NIST SP 800-90B entropy requirements, used for key generation and nonce derivation |
| Supply Voltage | 3.3 V ±10% - compatible with standard server/platform I/O voltage rails |
| Operating Temp | –40°C to +85°C - qualified for industrial and server chassis thermal environments |
Pinout & Package
28-pin TSSOP package (4.4 mm × 9.7 mm, 0.65 mm pitch) with exposed thermal pad for enhanced heat dissipation in high-reliability platforms.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | 3.3 V main supply rail; decoupling capacitor required per Infineon layout guidelines |
| GND | Ground reference | Dedicated analog/digital ground pin; must be connected to low-impedance system ground plane |
| SCL | I²C clock input | Open-drain input requiring external pull-up; supports standard/fast-mode I²C timing |
| SDA | I²C data bidirectional | Open-drain bidirectional line; shares same pull-up as SCL for bus arbitration |
| RESET_N | Active-low reset input | Asynchronous hard reset; assertion clears internal state and forces re-initialization sequence |
| INT_N | Interrupt output | Open-drain interrupt signal indicating command completion or error condition to host |
| CLK | Optional external clock input | Supports optional 32.768 kHz crystal or oscillator for precise timekeeping in time-based PCR extensions |
Key Features
| Feature | Design Value |
|---|---|
| FIPS 140-2 Level 3 certification | Physically tamper-resistant design with active shield mesh, voltage/temperature/frequency sensors, and zeroization on intrusion detection |
| Hardware-based Root of Trust | Immutable boot ROM with signed firmware loader ensures only authenticated firmware executes on SecurCore SC300 core |
| Hierarchical Key Management | Endorsement Key (EK) permanently fused; Storage Root Key (SRK) derived from EK and protected by platform-specific authorization |
| PCR Extend Capability | 24 Platform Configuration Registers (PCRs) support measured boot chain extension with SHA-256 hashing at each stage |
Applications
| Server Secure Boot | Industrial Control Firmware Integrity |
|---|---|
Use Scenario: Data center rack servers performing UEFI Secure Boot with measured launch and runtime attestation. IC Role / Device Role / Timing Role: TPM acts as immutable root of trust, extending PCRs during BIOS, bootloader, and hypervisor load phases. Use Value: Enables remote attestation of boot state via TPM Quote command, verifying absence of unauthorized firmware modifications. | Use Scenario: Programmable logic controller (PLC) firmware update over industrial Ethernet with rollback protection. IC Role / Device Role / Timing Role: TPM stores and verifies digital signatures of firmware images prior to execution, enforcing code authenticity. Use Value: Prevents deployment of malicious or corrupted firmware by validating ECDSA signatures against embedded public keys. |
| Automotive Telematics Security | Medical Device Data Provenance |
Use Scenario: Cellular-connected telematics control unit (TCU) authenticating OTA updates and establishing TLS sessions. IC Role / Device Role / Timing Role: TPM generates and protects private keys for TLS client authentication and firmware signing key storage. Use Value: Ensures private key material never leaves the tamper-resistant boundary, satisfying ISO/SAE 21434 cybersecurity requirements. | Use Scenario: Diagnostic imaging device logging DICOM metadata with cryptographically verifiable timestamps and operator identity. IC Role / Device Role / Timing Role: TPM signs audit logs using time-bound keys bound to hardware-verified real-time clock values. Use Value: Provides non-repudiable evidence of data origin and integrity for HIPAA-compliant audit trails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TPM 2.0 security applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ST33TPHF2ESAB2 | ARM Cortex-M0+ core; supports SPI and I²C; FIPS 140-2 Level 3 certified; lacks integrated RTC | Preferred in space-constrained embedded designs where SPI interface simplifies routing | Select when SPI host interface is available and RTC functionality is not required for PCR timestamping |
| ATTPM20MA12 | Microchip CryptoAuthentication device; implements subset of TPM 2.0 commands; no full FIPS 140-2 Level 3 certification | Suitable for cost-sensitive IoT endpoints needing basic attestation, not full server-grade compliance | Select only for non-regulated environments where full TPM 2.0 feature set and FIPS validation are not mandated |
Compared with ST33TPHF2ESAB2 and ATTPM20MA12, the SLB9655TT12FW432XUMA2 delivers full FIPS 140-2 Level 3 assurance, integrated RTC for time-bound PCR extension, and broader algorithm support - making it the only option qualified for enterprise server and regulated medical/automotive deployments requiring auditable cryptographic assurance.
Availability
SLB9655TT12FW432XUMA2 is available at Aetrix Electronics and suitable for server motherboard design, industrial PLC firmware security, and automotive telematics authentication requiring stable component supply and long-term lifecycle commitment.
Supply support for SLB9655TT12FW432XUMA2 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 is a German semiconductor manufacturer specializing in power management, automotive microcontrollers, and hardware security solutions with global manufacturing and qualification infrastructure.
The SLB9655 series belongs to Infineon's OPTIGA™ TPM product line, engineered specifically for hardware-rooted trust in cloud infrastructure, industrial automation, and connected mobility systems requiring certified cryptographic assurance.
FAQ
What is the primary cryptographic processor architecture inside the SLB9655TT12FW432XUMA2?
The SLB9655TT12FW432XUMA2 integrates an ARM SecurCore SC300 32-bit RISC CPU with TrustZone technology, executing certified TPM 2.0 firmware from immutable ROM and protected flash. Its instruction set and memory protection features are hardened against side-channel and fault injection attacks per Common Criteria EAL4+ evaluation.
Does the SLB9655TT12FW432XUMA2 support both I²C and SPI interfaces?
No - the SLB9655TT12FW432XUMA2 supports I²C only (up to 1 MHz). It does not implement SPI. Interface selection is fixed at manufacture; no configuration register or strap pin enables SPI mode. Host systems requiring SPI must use alternative TPMs such as ST's ST33 series.
How is the Endorsement Key (EK) provisioned and protected in this device?
The Endorsement Key (EK) is generated during wafer test using on-die TRNG and permanently fused into ROM. It cannot be read, exported, or modified. All subsequent key operations (e.g., SRK derivation) are performed internally using the EK as a seed, ensuring the EK remains isolated from software-accessible memory or buses.
Can the SLB9655TT12FW432XUMA2 operate without an external 32.768 kHz clock source?
Yes - the device operates fully without external 32.768 kHz clock. The CLK pin is optional. Internal RC oscillator provides sufficient accuracy for non-time-critical PCR extension. External crystal is only required when precise, tamper-monitored timekeeping is needed for time-bound attestations or sealed storage.
SLB9655TT12FW432XUMA2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Programmable:
- Not Verified
- Applications:
- -
- Core Processor:
- -
- Program Memory Type:
- -
- Controller Series:
- -
- RAM Size:
- -
- Interface:
- -
- Number of I/O:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
SLB9655TT12FW432XUMA2 FAQ
1.How can I place an order for SLB9655TT12FW432XUMA2 through Aetrix?
Please submit a Request for Quotation (RFQ) for SLB9655TT12FW432XUMA2 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 SLB9655TT12FW432XUMA2 reliable?
The price and inventory of SLB9655TT12FW432XUMA2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SLB9655TT12FW432XUMA2 is usually 5 days.
3.What payment methods are accepted for SLB9655TT12FW432XUMA2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SLB9655TT12FW432XUMA2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SLB9655TT12FW432XUMA2?
SLB9655TT12FW432XUMA2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SLB9655TT12FW432XUMA2 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 SLB9655TT12FW432XUMA2?
For technical support, including SLB9655TT12FW432XUMA2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SLB9655TT12FW432XUMA2 requirements.
6.How does Aetrix verify that SLB9655TT12FW432XUMA2 is sourced from the original manufacturer or authorized distributors?
All SLB9655TT12FW432XUMA2 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 SLB9655TT12FW432XUMA2 meets industry standards.
7.What is the process for return or replacement of SLB9655TT12FW432XUMA2?
All SLB9655TT12FW432XUMA2 units undergo pre-shipment inspection (PSI). If there is an issue with SLB9655TT12FW432XUMA2, 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 SLB9655TT12FW432XUMA2 part is unused and in its original packaging.
Return procedure for SLB9655TT12FW432XUMA2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SLB9655TT12FW432XUMA2 Tags
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