ST33TPM12I2CR28 STMicroelectronics Integrated Circuit (Small Outline Packages) In Stock
ST33TPM12I2CR28 is an STMicroelectronics Trusted Platform Module (TPM 1.2) powered by a 32-bit ARM SecurCore SC300 CPU with an I2C interface, delivered in a 28-pin TSSOP package, providing hardware-rooted cryptographic security and key storage for embedded platforms.
- Manufacturer
- STMicroelectronics
- Package
- Small Outline Packages
- Pin Count
- 28
- Lifecycle
- NOT RECOMMENDED
- Datasheet
- ST33TPM12I2CR28 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
- I2C host interface for straightforward integration with microcontrollers and embedded SoCs
- Hardware-accelerated RSA key generation, AES encryption, and SHA hashing
- Secure key storage with tamper-resistant non-volatile memory for platform authentication
- 28-pin TSSOP package (9.7 x 4.4 mm) for compact PCB integration in security-critical applications
Applications
Designed for embedded platforms requiring hardware-rooted trust, such as industrial gateways, network equipment, and secure boot systems where TPM 1.2 attestation prevents firmware tampering. The ST33TPM12I2CR28 is widely used in enterprise computing, medical devices, and IoT edge nodes that must comply with platform integrity standards like TCG and FIPS. Its I2C interface reduces pin count overhead compared to LPC-connected TPMs, making integration into resource-limited embedded designs straightforward.
Specifications
| Manufacturer Package Code | TSSOP28 9.7 x 4.4 |
| YTEOL | 3 |
| uPs/uCs/Peripheral ICs Type | CRYPTOGRAPHIC AUTHENTICATOR |
| Package | Small Outline Packages |
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 ST33TPM12I2CR28:
Frequently Asked Questions
Which TPM specification version does the ST33TPM12I2CR28 implement, and what cryptographic algorithms are supported?
The ST33TPM12I2CR28 complies with TCG TPM 1.2 specification. It supports hardware-accelerated RSA-2048 key generation and signing, AES-128 encryption, SHA-1 hashing, and HMAC authentication, providing a comprehensive hardware security foundation for platform integrity and attestation workflows.
How does the I2C interface of the ST33TPM12I2CR28 compare to LPC-connected TPMs in embedded integration?
The I2C interface requires only 2 signal lines (SDA and SCL) versus 7 or more for LPC-connected TPMs, reducing pin count significantly on the 28-pin TSSOP host connector. This simplifies routing and makes the ST33TPM12I2CR28 suitable for embedded ARM SoC platforms that expose I2C but not LPC bus.
Is the ST33TPM12I2CR28 appropriate for industrial designs with wide temperature requirements?
Yes. The industrial-grade ST33TPM12I2CR28 is specified over an extended temperature range typically from -40°C to +85°C, meeting the reliability demands of factory automation controllers, smart meters, and outdoor communication infrastructure where temperature extremes are common.
What form factor does the ST33TPM12I2CR28 use and how does it affect PCB layout for security module designs?
The part uses a 28-pin TSSOP package measuring 9.7 x 4.4 mm, a well-supported SMT footprint that fits standard pick-and-place assembly. The compact body allows the TPM to be placed close to the host SoC, keeping I2C trace lengths under 10 cm to minimize noise on the security bus.
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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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