STMicroelectronics ST33HTPH2032AHD1

Overview

ST33HTPH2032AHD1 from STMicroelectronics is a Flash-memory-based Trusted Platform Module (TPM) 2.0 security IC compliant with TCG TPM Library Specification 2.0 Level 0 Rev 138 and PC Client Specific Platform Spec 1.03, featuring Arm® SecurCore® SC300™ 32-bit RISC core, FIPS 140-2 Level 2 and Common Criteria EAL4+ certifications, and SPI interface supporting up to 33 MHz in CRB/FIFO modes for secure boot and attestation in industrial edge controllers.

For engineers reviewing the ST33HTPH2032AHD1 datasheet, ST33HTPH2032AHD1 pinout, ST33HTPH2032AHD1 application, or ST33HTPH2032AHD1 equivalent, key selection criteria include extended temperature operation (−40 °C to 105 °C), dual-voltage support (1.8 V / 3.3 V), hardware physical presence (PP) and GPIO (GPI) for low-power mode control, and certified cryptographic acceleration including RSA-2048, ECC-256, AES-256, and SP800-90A-compliant DRBG + AIS-31 Class PTG2 TRNG.

Technical Context

The ST33HTPH2032AHD1 implements a dedicated TPM 2.0 stack on an Arm SecurCore SC300 core with memory protection unit (MPU), active shield, environmental sensors, and fault-injection countermeasures. It executes TPM commands exclusively in CRB and FIFO SPI protocol modes without legacy TIS support.

Its security architecture integrates a FIPS-compliant RNG combining SHA256-based DRBG and true entropy from analog noise sources, alongside hardware-accelerated RSA, ECC, AES, HMAC-SHA, and ECDAA operations - all operating within a tamper-resistant boundary validated to CC EAL4+ and FIPS 140-2 Level 2.

Key Specifications

Pinout & Package

ST33HTPH2032AHD1 is packaged in VFQFPN32 (5 × 5 mm, 0.5 mm pitch), a leadless quad flat pack with exposed thermal pad (Pin 33, not internally connected). The package supports high-density PCB layouts and enhanced thermal dissipation (θJA = 35.8 °C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar TPM 2.0 security module applications.

Compared with SLB9670 and A71CH, ST33HTPH2032AHD1 uniquely combines Arm SecurCore SC300 execution, extended temperature operation, native TPM 2.0 firmware, and dual-voltage flexibility - making it optimal for industrial and automotive edge devices requiring certified, self-contained trust anchors.

Availability

ST33HTPH2032AHD1 is available at Aetrix Electronics and suitable for industrial PLCs, automotive telematics gateways, medical imaging systems, and smart grid substation controllers requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for ST33HTPH2032AHD1 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, analog ICs, MEMS, and secure elements for industrial, automotive, and consumer markets.

The STSAFE-TPM product line delivers standardized, certified TPM 2.0 solutions targeting embedded, PC, mobile, and computing applications - engineered to simplify integration of hardware-rooted trust into resource-constrained platforms.

FAQ

What is the maximum SPI clock frequency supported by ST33HTPH2032AHD1?

The device supports SPI clock frequencies up to 33 MHz in both CRB and FIFO protocol modes, enabling high-throughput TPM command execution such as RSA-2048 signature generation in under 120 ms. This timing is validated across the full −40 °C to +105 °C operating range with 3.3 V supply.

Does ST33HTPH2032AHD1 support TPM 1.2 commands?

No - ST33HTPH2032AHD1 implements TPM 2.0 commands exclusively and does not support TPM 1.2 legacy functionality. Its firmware stack is built to TCG TPM Library Specification 2.0 Level 0 Rev 138, and no backward-compatible mode is provided.

How is physical presence enforced on this device?

Physical presence is implemented via the PP (Physical Presence) pin, an active-high input with internal pull-down. When asserted, it authorizes privileged operations like TPM2_Clear or dictionary attack lockout reset - preventing remote or automated execution of destructive commands without hardware-level confirmation.

What certifications apply to ST33HTPH2032AHD1?

The device holds Common Criteria EAL4+ certification against the TPM 2.0 Protection Profile and FIPS 140-2 Level 2 validation. These certifications cover the entire silicon, firmware, and cryptographic implementation - verified by accredited labs and published in the NIAP and NIST CMVP databases.