STSAFL010DFSPL01 [STMicroelectronics]

The STSAFE-L010 system-on-chip is a secure element providing authentication and data management services to a local host.

The primary function of the STSAFE-L010 is to allow the peripheral or consumable to which it is attached to be authenticated by a host for the latter to discriminate between wanted and unwanted peripheral or consumable.

The STSAFE-L010 authentication is performed by generating a digital signature over a challenge sent by the host (traceability data or zone data can be added to the challenge to authenticate it). It uses an Ed25519 signature private key that is unique for each chip and loaded at ST secure personalization center.

On top of authentication, STSAFE-L010 comes with a unique ID and offers a usage monitoring service with decrement-only counters.

A 32 Kbytes nonvolatile memory can be configured in memory zones with different access rights, so that a given zone can always be read but not modified, like manufacturing data, or can freely be modified during the life of the product, to track the way it is used for instance.

• • Authentication of consumables and peripherals
  • Usage monitoring with secure counters
  • Nonvolatile memory zones with user-defined access rights
• Security features
  • Secure system solution
    • Secure MCU
    • Secure STSAFE-L010 operating system for authentication and data management
    • Unique serial number on each die
    • Monitoring of environmental parameters
    • Protection mechanism against faults
    • Protection against side-channel attacks
  • Advanced asymmetric cryptography
    • Advanced asymmetric cryptography relying on ECC with 256 bits key length (Edwards curves Ed25519)
• Hardware features
  • 32 Kbytes of secure nonvolatile memory
    • Flash memory
    • 10 years data retention at 25°C
    • 100 000 erase/program cycles endurance at 25°C
  • Supply voltage
    • 
      1.62 V to 5.5 V
      
  • 
    Operating temperature:
    
    • 
      −25°C to 85°C
      
    
    
• Protocol
  • ST1Wire communication interface on one I/O
    • Up to 100 kbps communication speed
  • I²C communication interface
    • Up to 100 kHz communication speed
    • 7-bit addressing mode
• Packages
  • ECOPACK-compliant UFDFPN 8-lead ultrathin profile fine pitch dual flat packages
  • X2F-PSON6 package (under commercial conditions)
  • XDFN3 package for direct contact (under commercial conditions)