STSAFE-A110SO8 STMicroelectronics Integrated Circuit (Small Outline Packages) In Stock
The STSAFE-A110SO8 is a secure element IC from STMicroelectronics providing hardware-rooted authentication, cryptographic services, and secure key storage for IoT devices and peripherals in an 8-pin SO-8 package. Key security features include ECC-P256/P384 asymmetric cryptography, AES-128 symmetric encryption, 50 kB of protected non-volatile memory, and Common Criteria EAL5+ certification for robust tamper resistance. Ideal for authenticating accessories, securing firmware updates, and establishing trusted device identity in industrial IoT, smart home, and connected medical equipment applications.
- Manufacturer
- STMicroelectronics
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- STSAFE-A110SO8 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of STSAFE-A110SO8?
- Hardware-rooted ECC P-256/P-384 asymmetric cryptography with AES-128 symmetric encryption for end-to-end IoT security
- Common Criteria EAL5+ certified tamper-resistant secure element protecting keys and credentials against physical and side-channel attacks
- 50 kB protected non-volatile memory for secure certificate storage, device identity, and lifecycle management data
- I2C host interface in compact 8-pin SO-8 package enables drop-in security upgrade to existing MCU-based IoT designs
What is STSAFE-A110SO8 used for?
The STSAFE-A110SO8 enables hardware-based authentication and secure communication in IoT edge devices, smart accessories, and industrial sensor nodes where software-only security is insufficient against cloning and tampering threats. It provides a root of trust for firmware integrity verification, secure boot, and over-the-air update authentication, protecting device ecosystems from counterfeit peripherals and unauthorized code execution. The device is also used in medical wearables, smart meters, and connected home devices to establish unique, unforgeable device identities compliant with regulatory security requirements.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the STSAFE-A110SO8 datasheet?
STSAFE-A110SO8 Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for STSAFE-A110SO8?
Compatible alternatives and drop-in replacements for STSAFE-A110SO8:
Frequently Asked Questions
What cryptographic algorithms does the STSAFE-A110SO8 support and at what key lengths?
The STSAFE-A110SO8 supports Elliptic Curve Cryptography (ECC) with NIST P-256 and P-384 curves for asymmetric operations such as key pair generation, ECDSA signature, and ECDH key agreement, as well as AES-128 bit symmetric encryption for data protection. These algorithms cover the security requirements of most IoT and industrial authentication use cases, including TLS 1.2/1.3 mutual authentication and secure firmware update verification.
How does STSAFE-A110SO8 protect IoT devices against peripheral cloning and counterfeit accessories?
The STSAFE-A110SO8 stores ECC private keys in a physically protected, tamper-resistant secure element that cannot be read out even under invasive attacks at the CC EAL5+ certified level. A host MCU challenges the accessory to sign a random nonce using the stored private key; only a genuine STSAFE-A110-equipped accessory can produce the correct 256-bit or 384-bit ECC signature, making cryptographic cloning of the key material computationally infeasible and physically protected from side-channel and fault injection attacks.
What non-volatile memory capacity does the STSAFE-A110SO8 provide and what is it typically used for?
The STSAFE-A110SO8 provides 50 kB of secure, protected non-volatile memory organized in user-definable zones with configurable read/write access policies. This storage capacity holds X.509 device certificates (typically 1–2 kB each), symmetric keys, secure counters for anti-replay protection, and lifecycle state data, leaving ample space for multiple certificate chains and custom application credential sets required in PKI-based IoT deployments.
How is the STSAFE-A110SO8 integrated into an existing MCU-based design using its I2C interface?
The STSAFE-A110SO8 connects to any host MCU via a standard 2-wire I2C interface operating at 400 kHz or 1 MHz, requiring only VCC, GND, SDA, and SCL connections on the 8-pin SO-8 footprint. STMicroelectronics provides a software middleware library (STSAFE-A API) for STM32 and other MCU families that abstracts the cryptographic command protocol, enabling integration with minimal firmware effort. The compact SO-8 package occupies roughly 5 × 4 mm of PCB area, making it suitable for space-constrained IoT sensor nodes and wearable device designs.
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Why Buy from FindMyChip
About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
In Stock · 24h Response · Worldwide Shipping
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