ST54M - NFC + Secure Element + eSIM + PQC Chip | STMicroelectronics
MPN: ST54M ✓ Active| Qty | Unit Price | Extended |
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ST54M Overview
A secure element is a hardened, tamper-resistant integrated circuit that stores cryptographic keys and executes security-critical operations in isolation from the main application processor. Within the power-management and connectivity hierarchy of a smartphone, the ST54M sits in the trusted execution domain, handling payment credentials, digital identity, transit tickets, and digital keys. The eSIM function follows the embedded SIM paradigm defined by GSMA specifications, and the serial interface of ST54M_SE is fully compatible with the ISO/IEC 7816-3 standard (T=0, T=1) up to 20 MHz.
Key differentiating features include the world-first integration of a PQC hardware accelerator in a mobile secure chip (announced by STMicroelectronics on June 24, 2026), crypto agility that supports hybrid cryptographic approaches during the transition to full post-quantum deployment, and single-die NFC plus secure element integration that simplifies board design versus two-chip solutions.
Architecturally, the ST54M combines the CLF (contactless front-end) handling ISO 14443-type RF communication and NFC Forum interactions with the SE platform running Java Card-class secure workloads. The PQC accelerator offloads lattice-based key encapsulation (ML-KEM) and digital signatures (ML-DSA) from the CPU, future-proofing devices against harvest-now-decrypt-later attacks.
Typical applications are mobile payment wallets (NFC payments), embedded SIM provisioning for connected services, transit fare collection, digital car keys, and secure identity documents.
Design consideration: because contactless performance depends strongly on antenna matching, follow the ST reference antenna tuning network and verify the >15 cm operating distance in the final mechanical stack-up.
This page synthesizes manufacturer product data, PQC campaign details, and cross-reference search results into a single engineering reference not found on distributor listing pages.
Drop-in alternatives for ST54M — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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Request AlternativesST54M Maximum Ratings & Electrical Characteristics
| Product Type | Single-die NFC contactless front-end + secure element + eSIM |
| Integrated Blocks | ST54M_CLF (contactless front-end), ST54M_SE (secure element), eSIM, PQC accelerator |
| PQC Algorithms | ML-KEM, ML-DSA (hardware accelerator) |
| Serial Interface | ISO/IEC 7816-3 compatible (T=0, T=1) up to 20 MHz |
| Contactless Operating Distance | Beyond 15 cm from any reader |
| NFC Compliance | NFC-standard compliant products |
| Target Platform | Smartphone and mobile devices |
| Crypto Agility | Yes - supports hybrid to full post-quantum transition |
| Announcement Date | June 24, 2026 |
ST54M standard Pin Configuration Guide
Pin configuration for ST54M (standard package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for ST54M.
Refer to the datasheet for full pin configuration.
Typical Applications
ST54M is suitable for 6 applications: Mobile Payment Wallets, Embedded SIM (eSIM) Provisioning, Digital Car Keys, Transit Fare Collection, Digital Identity and eGovernment Documents, Secure IoT and Connected Services.
Mobile Payment Wallets
The ST54M fits mobile payment applications because its tamper-resistant ST54M_SE secure element stores payment credentials (card emulsion keys) in a certified environment while the integrated ST54M_CLF contactless front-end performs ISO 14443 communication with POS terminals at up to 15 cm operating distance. In a typical smartphone architecture, the SE communicates with the application processor via the ISO/IEC 7816-3 (T=0, T=1) serial interface at up to 20 MHz, and the CLF is connected to the device NFC antenna through the manufacturer-recommended matching network. The PQC hardware accelerator executing ML-KEM and ML-DSA allows issuers to migrate transaction cryptography to quantum-safe schemes without changing silicon, protecting long-lived payment credentials. Because NFC front-end and SE share one die, transaction latency is reduced and the certification scope is simplified versus two-chip stacks.
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Embedded SIM (eSIM) Provisioning
The ST54M directly addresses eSIM applications: the datasheet states the ST54M_SE serial interface is fully compatible with ISO/IEC 7816-3 (T=0, T=1) up to 20 MHz and is intended for embedded SIM use. In a connected device, the eSIM profile is downloaded over the network and stored inside the secure element, where signing operations are performed with keys that never leave the chip. The post-quantum accelerator (ML-KEM, ML-DSA) enables quantum-safe profile provisioning and remote SIM management as GSMA ecosystems evolve toward PQC, providing crypto agility through hybrid schemes during the transition period. Integrating the eSIM on the same die as NFC payment and transit credentials lets one chip serve carrier identity plus wallet use cases, reducing BOM count and increasing security-domain consolidation for OEMs.
Recommended
Digital Car Keys
Digital key applications benefit from the ST54M's combination of NFC passive/active communication and a certified secure element. The car key credential is stored in the ST54M_SE, and the CLF performs the reader-card interaction defined by digital key ecosystems (NFC-based car access) with operating distance beyond 15 cm, which improves unlock reliability from a phone in a pocket or bag. Latency is critical in door-entry scenarios; the single-die NFC-plus-SE integration shortens the transaction path compared with discrete controllers bridged over external interfaces. The ML-DSA hardware acceleration allows automakers to issue quantum-safe key certificates and support hybrid (classical plus PQC) authentication during fleet transition periods, extending credential lifetime across the vehicle's 10-15 year service life without a hardware change.
Recommended
Transit Fare Collection
Transit systems demand fast tap throughput and durable stored-value security, both addressed by the ST54M. The CLF front-end handles reader communication with a contactless range beyond 15 cm per the ST campaign page, and the secure element executes fare calculation and ticket validation inside the tamper-resistant boundary, conforming to regional transit security requirements. The ISO/IEC 7816-3 interface up to 20 MHz enables quick synchronization of ticket data with the host phone OS. Because millions of daily taps occur over the device lifetime, the PQC accelerator's support for ML-KEM and ML-DSA lets transit authorities schedule a cryptographic migration in software while the silicon remains unchanged. Single-die integration also permits one security certification covering payment, transit, and identity credentials on the same device.
Recommended
Digital Identity and eGovernment Documents
Mobile driver's licenses and national eID schemes require hardware-rooted storage of identity credentials, which the ST54M provides through its ST54M_SE secure element and eSIM-integrated identity domains. The secure element performs signature operations for document presentation protocols while the NFC front-end supports both reader-mode reading of physical documents and card-emulation presentation of the mobile credential. The >15 cm operating distance and ISO/IEC 7816-3 (T=0, T=1) 20 MHz host interface support both convenience and provisioning workflows. The ML-DSA post-quantum signature accelerator allows issuing authorities to adopt quantum-safe document signing standards as they are ratified, and crypto agility enables hybrid classical-plus-PQC verification during the multi-year migration window that government identity programs require.
Recommended
Secure IoT and Connected Services
Beyond smartphones, the ST54M extends into IoT gateways and connected devices that need both NFC provisioning and long-lifetime cryptographic protection. The embedded SIM function supports remote subscription management for cellular IoT modules, while the secure element protects device identity keys and firmware signing roots. Because IoT devices often remain in the field for a decade or more, harvest-now-decrypt-later threats are acute; the ST54M's ML-KEM hardware acceleration enables quantum-safe key establishment for device-to-cloud sessions, and ML-DSA verifies post-quantum-signed firmware updates. The >15 cm NFC range simplifies tap-to-provision workflows during manufacturing and commissioning. According to the ST announcement of June 24, 2026, this combination targets next-generation connected services across consumer and industrial segments.
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Recommended Products Summary
Engineering reference data for ST54M — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product |
|---|---|
| Brand | STMicroelectronics |
| PQC Hardware Accelerator (ML-KEM / ML-DSA) | Yes |
| NFC Contactless Front-End | Integrated (ST54M_CLF), >15 cm range |
| Secure Element | Integrated (ST54M_SE) |
| Embedded SIM | Yes |
| Host Interface | ISO/IEC 7816-3 (T=0, T=1) up to 20 MHz |
| Operating Distance | Beyond 15 cm |
Key Differentiators
- World's first mobile secure chip with PQC hardware accelerator (vs ST54 (prior family generation))
- Four-function single-die integration (vs Discrete NFC controller + separate secure element + separate eSIM)
- Extended contactless range (vs Conventional NFC front-ends)
Design Notes
The ST54M_CLF contactless front-end performance depends directly on antenna matching. Use the ST reference matching network topology from the ST54 family design package and tune the antenna with a network analyzer in the final mechanical stack-up, since battery, metal shields, and display layers shift resonance. Verify the >15 cm operating distance specification in the assembled device, not on the bare PCB, and re-test after any mechanical change.
Do not rely on the family ST54 datasheet (32 pages, covering the ST portfolio for smartphone platforms) for ST54M-specific parameters such as the PQC accelerator (ML-KEM, ML-DSA) capabilities. ST places detailed secure MCU documentation behind secure access; obtain the ST54M-specific datasheet or NDA documentation before finalizing the host ISO/IEC 7816-3 interface timing, which is specified up to 20 MHz.
Place the ST54M close to the device antenna feed point to minimize CLF-to-antenna track length, and keep the EMI-sensitive SE supply domain separated from high-current RF PA circuitry on the main board. Follow ST's smartphone-platform reference designs for the CLF ground strategy and shielding, since contactless range beyond 15 cm requires a low-noise receive path.
Estimated: contactless card-emulation operation is powered from the reader field, so verify that the application works across the full field-strength range defined by NFC standards; specific supply voltage limits for ST54M are not published in open web data and must be taken from the ST54M datasheet under secure access.
Compliance Information
Compliance data not published in the provided verified web data. Consult the official STMicroelectronics product page or datasheet for RoHS/REACH status.
