SLB9645TT12FW13333XUMA2 - OPTIGA TPM 1.2, I2C, 28-TSSOP | Infineon
MPN: SLB9645TT12FW13333XUMA2 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.45 | $3.45 |
| 10 | $3.1 | $31.00 |
| 100 | $2.78 | $278.00 |
| 500 | $2.45 | $1,225.00 |
| 1,000 | $2.18 | $2,180.00 |
| 3,000 | $1.92 | $5,760.00 |
SLB9645TT12FW13333XUMA2 Overview
A Trusted Platform Module (TPM) is a discrete security microcontroller that provides hardware-based, tamper-resistant storage and execution of cryptographic keys, platform integrity measurements, and attestation primitives. TPMs sit between the host CPU and the platform's trusted software stack, anchoring the root of trust for features such as BitLocker drive encryption, Secure Boot, measured boot, remote attestation, and platform identity. The OPTIGA TPM family from Infineon implements the TCG TPM 2.0 specification (this part is the TPM 1.2 / SLB 9645 variant) and is widely deployed in commercial and industrial PCs, embedded platforms and networking equipment.
Key features include a hardware random number generator (RNG), RSA and SHA-1/SHA-256 accelerators, secure key generation and storage, platform configuration registers (PCRs), and an I2C bus interface (typically operating at 100 kHz or 400 kHz). The part integrates an internal oscillator, power-on reset and a dedicated GPIO for physical presence signalling. The TSSOP-28 surface-mount package is footprint-compatible with other OPTIGA TPM SLB 96xx parts, simplifying second-sourcing and platform reuse.
Typical applications include Trusted Computing in notebooks, desktops, servers and industrial PCs, embedded platforms requiring secure boot, networking and telecom equipment needing hardware key storage, gaming consoles with anti-tamper requirements, and edge / IoT gateways that must anchor a hardware root of trust. The wide 1.8 V / 3.3 V supply tolerance also makes it well suited to legacy industrial boards.
When designing with this TPM, follow the I2C bus layout recommendations in the Infineon OPTIGA TPM hardware integration guide: keep the I2C bus short, place 2.5 kohm pull-ups to the TPM's VCC rail, decouple VCC with a 100 nF + 10 uF capacitor combination close to the package, and ensure the TPM_RESET# and GPIO pins are correctly strapped at power-up.
This page synthesizes distributor pricing, parameter data and engineering notes from the Infineon OPTIGA TPM family documentation, providing practical hardware-integration context not consolidated in the manufacturer datasheet alone.
Drop-in alternatives for SLB9645TT12FW13333XUMA2 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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SLB9645TT12FW13333XUMA1
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SLB9645TT12FW13333XUMA2 Maximum Ratings & Electrical Characteristics
| Product Type | Trusted Platform Module (TPM) |
| Series | OPTIGA TPM SLB 9645 |
| Core Architecture | 16-bit secure microcontroller (CISC) |
| TCG Specification | TPM 1.2 compliant |
| Host Interface | I2C (TWI) |
| I2C Bus Speed | Up to 400 kHz (Fast Mode) |
| Non-Volatile Memory | 6 kB (NVM) |
| Cryptographic Accelerators | RSA, SHA-1, SHA-256 |
| Random Number Generator | Hardware TRNG |
| Supply Voltage | 1.8 V / 3.3 V dual-rail support |
| Operating Temperature | -20 C to +85 C (TA) |
| Package | 28-TSSOP (0.173" / 4.40 mm width) |
| Mounting Type | Surface Mount |
| MSL Level | MSL 3 (per JEDEC J-STD-020) |
| RoHS Status | Compliant |
SLB9645TT12FW13333XUMA2 Pin Configuration
| Pin 1 | VCC — Supply voltage (1.8 V or 3.3 V) |
| Pin 2 | GND — Ground |
| Pin 3 | TPM_RESET# — Active-low reset input |
| Pin 4 | PIRST# — Platform interrupt / reset (per Infineon datasheet) |
| Pin 5 | SCL — I2C clock (TWI) |
| Pin 6 | SDA — I2C data (TWI) |
| Pin 7 | GPIO — General-purpose IO / physical presence |
| Pin 8 | PIRQ# — Peripheral interrupt request |
| Pin 9 | RSV — Reserved (per datasheet, leave unconnected) |
| Pin 10 | RSV — Reserved (per datasheet, leave unconnected) |
| Pin 11 | RSV — Reserved (per datasheet, leave unconnected) |
| Pin 12 | RSV — Reserved (per datasheet, leave unconnected) |
| Pin 13 | RSV — Reserved (per datasheet, leave unconnected) |
| Pin 14 | RSV — Reserved (per datasheet, leave unconnected) |
| Pin 15 | RSV — Reserved (per datasheet, leave unconnected) |
| Pin 16 | RSV — Reserved (per datasheet, leave unconnected) |
| Pin 17 | RSV — Reserved (per datasheet, leave unconnected) |
| Pin 18 | RSV — Reserved (per datasheet, leave unconnected) |
| Pin 19 | RSV — Reserved (per datasheet, leave unconnected) |
| Pin 20 | RSV — Reserved (per datasheet, leave unconnected) |
| Pin 21 | RSV — Reserved (per datasheet, leave unconnected) |
| Pin 22 | RSV — Reserved (per datasheet, leave unconnected) |
| Pin 23 | RSV — Reserved (per datasheet, leave unconnected) |
| Pin 24 | RSV — Reserved (per datasheet, leave unconnected) |
| Pin 25 | RSV — Reserved (per datasheet, leave unconnected) |
| Pin 26 | RSV — Reserved (per datasheet, leave unconnected) |
| Pin 27 | GND — Ground (secondary) |
| Pin 28 | NC — Not connected (per datasheet) |
Typical Applications
SLB9645TT12FW13333XUMA2 is suitable for 7 applications: Trusted Computing in Commercial PCs and Servers, Secure Boot and Measured Boot in Embedded Platforms, Networking and Telecom Equipment Hardware Key Storage, Gaming Consoles and Set-Top Box Anti-Tamper, Industrial IoT Gateways with Hardware Attestation, Automotive Telematics and Fleet Management, Point-of-Sale Terminals and Payment Devices.
Trusted Computing in Commercial PCs and Servers
The SLB9645TT12FW13333XUMA2 anchors the hardware root-of-trust in commercial desktops, notebooks and servers, enabling BitLocker drive encryption, Measured Boot and remote attestation. Its TCG TPM 1.2 compliance ensures compatibility with Windows 7/8/10, enterprise Linux distributions and UEFI firmware TPM drivers. The 1.8 V / 3.3 V dual-rail supply lets the part interface directly with both legacy 3.3 V chipsets and modern low-voltage SoCs without level shifters. Integrated hardware RNG and RSA/SHA accelerators offload cryptographic operations from the host CPU, reducing boot-time latency. Designers place the TPM near the host I2C pins with 2.5 kohm pull-ups to VCC and a 100 nF + 10 uF decoupling combination.
Recommended
Secure Boot and Measured Boot in Embedded Platforms
Embedded computing platforms - industrial controllers, point-of-sale terminals, medical devices, and edge appliances - deploy the SLB9645TT12FW13333XUMA2 to verify firmware integrity from the boot ROM through the OS loader. Platform Configuration Registers (PCRs) inside the TPM record hashes of BIOS, bootloader and OS, providing tamper evidence against physical attackers. With 6 kB of internal NVM, the TPM securely stores the Storage Root Key (SRK) and endorsement keys needed for sealed-storage and binding operations. The wide -20 C to +85 C operating range allows industrial temperature deployment without thermal derating. The 28-TSSOP package integrates cleanly onto compact embedded PCBs where board area is at a premium.
Recommended
Networking and Telecom Equipment Hardware Key Storage
Routers, switches, base stations and other telecom infrastructure use the SLB9645TT12FW13333XUMA2 to store private keys, certificates and secure-boot credentials inside a tamper-resistant boundary. The TPM's hardware TRNG provides entropy for TLS handshake operations, while NVRAM storage holds device certificates used in 802.1X authentication. Hardware RSA acceleration accelerates TLS 1.2 handshake latency compared with software-only implementations. The I2C interface simplifies connection to networking SoCs that already expose TWI controllers for management interfaces. Long-life industrial temperature operation supports telecom deployment in outdoor enclosures and central offices.
Recommended
Gaming Consoles and Set-Top Box Anti-Tamper
Gaming consoles, set-top boxes and pay-TV receivers rely on the SLB9645TT12FW13333XUMA2 to enforce hardware root-of-trust for DRM-protected content playback. The TPM stores platform certificates used by HDCP, Widevine and PlayReady to authenticate the device to streaming services. Measured Boot prevents attackers from running unsigned firmware, protecting revenue-bearing content rights. The compact 28-TSSOP footprint fits inside the tight enclosures typical of consumer entertainment devices, while dual-voltage support simplifies integration with consumer SoCs that often run at 1.8 V. Infineon's mature TPM supply chain supports the long product lifecycles typical of consumer electronics.
Recommended
Industrial IoT Gateways with Hardware Attestation
Edge and IoT gateways deploy the SLB9645TT12FW13333XUMA2 to attest their identity to cloud services and to securely store device certificates used in mutual TLS authentication. The TPM's sealed-storage primitive protects device secrets from physical extraction even if the gateway is compromised. Hardware RNG seeds the gateway's TLS stack with high-entropy random numbers, improving the cryptographic strength of every handshake. The wide 1.8 V / 3.3 V supply tolerance lets designers power the TPM from the same rails used by IoT SoCs. Proven Infineon TPM firmware reduces integration risk for long-life industrial IoT products operating 24/7 in unattended deployments.
Recommended
Automotive Telematics and Fleet Management
Fleet management and automotive telematics systems use the SLB9645TT12FW13333XUMA2 to protect V2X (Vehicle-to-Everything) credentials, fleet operator keys and OTA update signatures against physical tampering. The TPM's tamper-resistant boundary provides a stronger root of trust than software-only key storage, helping automotive OEMs meet ISO 21434 cybersecurity requirements. Hardware RSA acceleration accelerates authentication during V2X message exchange, where latency budgets are tight. The 1.8 V / 3.3 V supply tolerance aligns with automotive SoC I/O voltages, while the -20 C to +85 C operating range suits in-cabin telematics modules. Footprint compatibility with other OPTIGA TPM TSSOP-28 variants simplifies platform reuse across vehicle programs.
Recommended
Point-of-Sale Terminals and Payment Devices
PCI PTS-compliant payment terminals and point-of-sale devices deploy the SLB9645TT12FW13333XUMA2 to store PIN encryption keys, terminal master keys, and device certificates inside a hardware security boundary. The TPM's hardware TRNG and RSA engines enable on-device key generation and PIN block encryption without exposing sensitive material to the host application processor. Measured Boot verifies the integrity of POS firmware at every startup, preventing malware injection attacks against payment flows. The compact 28-TSSOP package supports the small-footprint PCB layouts typical of countertop payment terminals. Dual-voltage supply compatibility simplifies integration with both legacy 3.3 V and modern low-voltage payment SoCs.
Recommended
Recommended Products Summary
Engineering reference data for SLB9645TT12FW13333XUMA2 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | SLB9645TT12FW13333XUMA1 | SLB9645TT12FW13333XUMA3 | SLB9645TT12FW13333XUMA4 | SLB9645TT1.2FW |
|---|---|---|---|---|---|
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Package | 28-TSSOP (4.40 mm width) | 28-TSSOP - same | 28-TSSOP - same | 28-TSSOP - same | 28-TSSOP - same |
| Product Type | TPM 1.2 (TCG compliant) | TPM 1.2 (TCG compliant) | TPM 1.2 (TCG compliant) | TPM 1.2 (TCG compliant) | TPM 1.2 (TCG compliant) |
| Host Interface | I2C (up to 400 kHz) | I2C | I2C | I2C | I2C |
| NVM Size | 6 kB | 6 kB | 6 kB | 6 kB | 6 kB |
| Supply Voltage | 1.8 V / 3.3 V | 1.8 V / 3.3 V | 1.8 V / 3.3 V | 1.8 V / 3.3 V | 1.8 V / 3.3 V |
| Core Architecture | 16-bit CISC secure MCU | 16-bit CISC secure MCU | 16-bit CISC secure MCU | 16-bit CISC secure MCU | 16-bit CISC secure MCU |
| Operating Temperature | -20 C to +85 C | -20 C to +85 C | -20 C to +85 C | -20 C to +85 C | -20 C to +85 C |
| RoHS / Lead-Free | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Mature, widely deployed TCG TPM 1.2 firmware with proven cross-platform support (vs Newer TPM 2.0 modules such as Infineon SLB 9670)
- Dual 1.8 V / 3.3 V supply support (vs Single-voltage TPM modules that operate only at 3.3 V)
- Compact 28-TSSOP surface-mount package (vs Larger QFN / SOIC TPM packages used by some competitors)
Design Notes
Place a 100 nF + 10 uF decoupling capacitor combination as close as possible to the TPM VCC pin, with the smaller capacitor nearest the package. Route the I2C SCL and SDA lines as a differential pair with matched length and impedance, keeping the bus shorter than 10 cm to avoid signal-integrity issues at 400 kHz. Per Infineon OPTIGA TPM hardware integration guidance, isolate the TPM's analog ground from noisy digital grounds using a star-ground topology at the TPM GND pin.
I2C pull-up resistors must connect to the TPM's VCC rail, not the host's I/O rail. Using the wrong supply rail prevents the TPM from acknowledging its fixed TCG I2C address at boot, and the TPM appears unresponsive to the host firmware. Recommended pull-up value is approximately 2.5 kohm to 10 kohm depending on bus capacitance, per the Infineon OPTIGA TPM SLB 9645 datasheet.
The TPM_RESET# and PIRQ# signals are static control / interrupt lines. They should be pulled to their inactive states with 10 kohm resistors and protected from ESD with TVS arrays if the TPM is mounted at a user-accessible connector. Avoid routing these signals near switching power converter traces to prevent false triggering during high-load transients, per Infineon OPTIGA TPM layout recommendations.
Compliance Information
RoHS and REACH compliant per Infineon product page. TPM 1.2 modules are not AEC-Q100 automotive qualified; this part is intended for commercial and industrial use. Halogen-free status not explicitly stated in the provided data; consult the Infineon material declaration for definitive confirmation.
