STMicroelectronics STSAFA110S8SPL03

The STSAFE-A110 integrates a secure operating system and cryptographic services for local or remote host authentication. It supports asymmetric signing and verification, key establishment, secure channels, and configurable nonvolatile data management over an I²C slave interface. The S8 code identifies SO8N tape-and-reel packaging. The SPL03 suffix identifies ST's generic sample personalization profile; it must be distinguished from other profiles because keys, certificates, and access rules can differ.

ST defines S8 as the SO8N 8-lead, tape-and-reel package. The manufacturer's SO8N drawing shows a nominal 3.90 mm body width and 1.27 mm lead pitch. The site's normalized 8-SOIC registration matches the existing 0.154-inch-width category.

Layout checks

• Verify SO8N body, lead pitch, and pin-1 orientation against ST's mechanical drawing.
• Place the 100 nF VCC bypass capacitor close to the package.
• Provide I²C pull-ups and a controllable RESET signal per the system design.

The normalized registry entry and local JPG were verified. The illustration is not a dimensional drawing.

ST datasheet DS13039 SO8N top-view pinout:

Pin numbers follow the manufacturer's top-view SO8N diagram; confirm orientation at assembly.

Family capabilities depend on personalization and access conditions; the SPL03 profile should be checked before firmware integration.

Other STSAFE-A110 package or personalization suffixes are not automatically interchangeable. In particular, UFDFPN8 changes the footprint, while SPL02 and other profiles can change certificates, key material, zones, and authorization policy. A proposed STSAFE-A120 redesign also needs command, provisioning, interface, and security-lifecycle review. No internal alternative is linked without a verified exact product record.

STMicroelectronics publishes STSAFE-A110 datasheet DS13039 and the SPL03 generic sample profile note AN5762. The ST product listing identifies STSAFA110S8SPL03 as the SO-8 ordering option. ST recommends confirming the exact personalization and provisioning requirements with its controlled documentation.

Verify the full order code and lot traceability, then confirm the expected SPL03 certificate chain, serial identity, key permissions, and data-zone configuration using ST's profile documentation. Do not infer personalization solely from the package outline.

Confirm SPL03 personalization and key-access conditions before production use. RESET must follow ST's power-on sequence, and the I²C host must not depend on clock stretching. Use the specified local VCC filtering and observe the published voltage and temperature limits. Security functions require complete host-side certificate, key, and provisioning management.