ST33TPM12I2CQFN STMicroelectronics Integrated Circuit (Quad Flat No-Lead) In Stock
The ST33TPM12I2CQFN is a Trusted Platform Module (TPM 1.2) IC by STMicroelectronics, built on a 32-bit ARM SecurCore SC300 CPU with I2C interface. It provides hardware-based cryptographic authentication and secure key storage in a compact VFQFPN-32 package. Suitable for embedded security and platform integrity applications.
- Manufacturer
- STMicroelectronics
- Package
- Quad Flat No-Lead
- Pin Count
- 33
- Lifecycle
- NOT RECOMMENDED
- Datasheet
- ST33TPM12I2CQFN Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- TPM 1.2 compliant hardware security module with 32-bit ARM SecurCore SC300 CPU core
- I2C interface for easy integration with host systems and microcontrollers
- Hardware-based RSA-2048 cryptographic engine for key generation, signing, and encryption
- Secure non-volatile memory for storing 2048-bit RSA keys and platform configuration registers
- VFQFPN-32 (5x5x1.0 mm) compact QFN package suitable for space-constrained embedded designs
Applications
The ST33TPM12I2CQFN is designed for embedded security applications requiring hardware-based trust anchors, including PC motherboards, laptops, industrial controllers, and IoT gateways. It enables platform integrity measurement and attestation, secure boot verification, and hardware-encrypted key storage for enterprise and industrial systems. This device is ideal for designs requiring TPM 1.2 compliance in space-constrained environments using the I2C bus.
Specifications
| Manufacturer Package Code | VFQFPN 32 5x5x1.0 |
| YTEOL | 3 |
| uPs/uCs/Peripheral ICs Type | CRYPTOGRAPHIC AUTHENTICATOR |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.31.00.30 |
| Country of Origin | Philippines |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for ST33TPM12I2CQFN:
Frequently Asked Questions
What cryptographic algorithms does the ST33TPM12I2CQFN support, and what key sizes can it handle?
The ST33TPM12I2CQFN supports RSA-2048 for asymmetric cryptography and SHA-1 hashing, which are mandated by the TPM 1.2 specification. It can generate and store 2048-bit RSA keys internally in secure non-volatile memory, ensuring private keys never leave the device. This makes it suitable for platform attestation, secure boot, and digital signing in embedded security designs.
How does the I2C interface of the ST33TPM12I2CQFN simplify integration compared to LPC-based TPM modules?
The ST33TPM12I2CQFN uses a 2-wire I2C bus interface operating at up to 400 kHz (Fast Mode), which requires fewer PCB traces and GPIO pins than LPC or SPI-based TPM alternatives. This makes it easier to add hardware security to microcontroller-based platforms, IoT nodes, and embedded boards where LPC bus lanes are unavailable. The I2C interface is natively supported by most modern ARM Cortex microcontrollers.
Which embedded platforms are best served by integrating the ST33TPM12I2CQFN for platform integrity protection?
The ST33TPM12I2CQFN is well suited for industrial controllers, single-board computers, IoT gateways, and network equipment that require hardware-rooted trust and TPM 1.2 compliance. Operating across a temperature range of -40°C to +85°C, it can serve both commercial and extended-temperature industrial environments. Its compact VFQFPN-32 5x5 mm footprint makes it feasible for space-constrained PCB layouts requiring certified security.
When should a designer choose ST33TPM12I2CQFN over a software-based TPM or firmware TPM solution?
Hardware TPMs like the ST33TPM12I2CQFN provide a dedicated 32-bit secure microcontroller with physically isolated cryptographic operations, meaning private RSA-2048 keys and PCR values are never exposed to the host CPU or OS memory. Software or firmware TPMs rely on the host processor and can be compromised by OS-level attacks. Choosing a discrete TPM 1.2 device is essential when FIPS 140-2 or Common Criteria certification is required for the end product.
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About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
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