STSAFA110DFSPL02

Overview

The STSAFA110DFSPL02 is a secure element from the STSAFE-A110 series, designed for authentication and secure data management in IoT devices and peripherals. It integrates a secure operating system on a highly secure microcontroller with Common Criteria CC EAL5+ certification. The device supports supply voltages between 1.8 V and 5.5 V and operates in industrial grade environments. Key cryptographic capabilities include ECC with NIST or Brainpool curves up to 384 bits, ECDSA, and symmetric encryption using up to 16 keys. It features an 8-lead UFDFPN (2x3 mm) package with an exposed pad.

Feature Summary

• CC EAL5+ AVA_VAN5 certified secure MCU with active shield and side-channel attack protection
• Supports TLS handshake, secure boot, firmware upgrade signature verification, and secure channel establishment
• Advanced asymmetric cryptography including ECC (NIST/Brainpool 256/384-bit) and ECDSA with SHA-256/384
• Hardware security features: unique serial number, environmental monitoring, fault injection protection

Applications

• Authentication of consumables and peripherals
• Secure channel establishment for IoT connected objects
• USB Type-C power delivery charger authentication
• Qi over-the-air charger security
• LPWAN security with preloaded Sigfox or LoRaWAN credentials

Procurement Notes

Verify the specific ordering suffix SPL02 against official documentation to confirm packaging details such as tape and reel specifications. Ensure compatibility with the 8-UFDFPN (2x3 mm) footprint during PCB layout. Confirm that the industrial grade qualification meets the operational temperature requirements of the target application environment before procurement.

Selection Notes

Select this component when high-assurance security (EAL5+) is required for peripheral authentication or IoT device identity. It is suitable for applications needing hardware-based key storage, secure boot validation, and TLS termination. Consider the 1.8 V to 5.5 V supply range for voltage domain compatibility. Evaluate the need for LPWAN credential preloading if deploying in Sigfox or LoRaWAN networks.

Part Context

This part belongs to the STSAFE-A110 family of secure elements. The base model STSAFA110D provides the core secure MCU functionality. The suffix DFSPL02 indicates specific manufacturing or packaging variations, such as the tape and reel format, without altering the fundamental cryptographic or functional capabilities defined by the A110 architecture.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided source material. Direct replacement requires verifying pinout compatibility and software API alignment with the existing STSAFE-A110 implementation.