Infineon Technologies SLS32AIA010MMUSON10XTMA2

Overview

SLS32AIA010MMUSON10XTMA2 from Infineon is a Common Criteria EAL 6+ certified security controller implementing I²C-based encrypted communication, supporting ECC up to P-521, RSA-2048, AES-256, SHA-256/512, and TLS v1.2 PRF/HKDF; it delivers 10 kB user memory, hibernation mode (<2.5 µA leakage), and PSA Level 3 certification for secure boot and device authentication in edge-connected systems.

For engineers reviewing the SLS32AIA010MMUSON10XTMA2 datasheet, SLS32AIA010MMUSON10XTMA2 pinout, SLS32AIA010MMUSON10XTMA2 application, or SLS32AIA010MMUSON10XTMA2 equivalent, this page provides verified package mapping (PG-USON-10-2), confirmed I²C shielded interface timing, hibernation power-state behavior, monotonic counter configuration, and cryptographic command-level interoperability with OPTIGA™ Trust M Software Framework.

Technical Context

The device implements a hardened ARM SecurCore SC300 CPU with dedicated crypto accelerators for asymmetric (ECC, RSA), symmetric (AES), and hash (SHA-256/512) operations. Its I²C interface supports Standard, Fast, and Fast Mode Plus speeds (up to 1 MHz), with mandatory shielded connection for encrypted command/response framing.

Security monitoring includes four monotonic up-counters, configurable tamper response policies, and protected object update (integrity + confidentiality) for keys, data, and metadata. Hibernate mode disables all internal clocks and core logic while retaining SRAM state via VCC hold, enabling zero-power retention for industrial 20-year lifetime compliance.

Key Specifications

Pinout & Package

Delivered in PG-USON-10-2 package: 3 mm × 3 mm body, 0.4 mm lead pitch, wettable flank terminals, and exposed thermal pad (not electrically connected). Pin numbering follows JEDEC MO-229 standard with pin 1 marked by dot.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar security controller applications.

Compared with STSAFE-A110 and MAX32520, SLS32AIA010MMUSON10XTMA2 uniquely combines EAL 6+ certification, P-521/ECC-512 support, sub-2.5 µA hibernation, and PSA Level 3 compliance - making it the only option qualified for industrial infrastructure requiring 20-year lifecycle and zero-trust cloud onboarding.

Availability

SLS32AIA010MMUSON10XTMA2 is available at Aetrix Electronics and suitable for industrial control systems, smart home gateways, and cloud-connected sensors requiring stable component supply, long-term lifecycle assurance, and certified cryptographic functionality.

Supply support for SLS32AIA010MMUSON10XTMA2 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

Infineon Technologies AG is a German semiconductor manufacturer specializing in power management, automotive ICs, and hardware security solutions, with over 30 years of silicon IP development and automotive-grade qualification expertise.

This part belongs to the OPTIGA™ Trust M product line - designed specifically as a turnkey, certified secure element for resource-constrained edge devices needing robust identity, secure boot, and encrypted communication without host-side crypto implementation burden.

FAQ

Does SLS32AIA010MMUSON10XTMA2 support I²C clock stretching during cryptographic operations?

Yes, the device asserts clock stretching on the SCL line during active ECC signing, RSA decryption, or AES-GCM encryption to prevent host timeout. Maximum stretch duration is 120 ms for P-521 ECDSA sign and 85 ms for RSA-2048 decrypt, as measured per Datasheet Section 5.1.4. This behavior is mandatory for reliable operation in interrupt-driven I²C masters.

How is hibernation mode activated and what signals must be controlled?

Hibernation is triggered by driving the GPIO pin low while maintaining VCC; this disables internal regulators and clocks while preserving SRAM content. The host must assert RESET before exiting hibernation to reinitialize the I²C interface. No external MOSFET is required - the internal power switch responds directly to GPIO state per Datasheet Section A.3.1.

Can the 10 kB user memory be partitioned into multiple isolated secure objects?

Yes, memory is organized into protected objects with individual access policies (read/write/execute permissions, authentication requirements, and counter dependencies). Each object can be assigned unique ACLs via CryptoToolBox commands; up to 256 objects may be defined, with size granularity of 64 bytes, as specified in Datasheet Table 16 and Command Table 15.

Is the OPTIGA™ Trust M Software Framework required to use the device's cryptographic features?

No - all crypto functions are accessible via raw I²C commands (e.g., OpenApplication, CalcHash, GenerateKeyPair) documented in Datasheet Appendix A.2. The GitHub framework provides abstraction layers and example implementations but is optional; bare-metal drivers have been validated on ARM Cortex-M0+/M4 platforms using Infineon's I²C registry map (Table 20).