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ATECC508A-MAHDA-S

MCHPATECC508A-MAHDA-S

Microchip Technology
Authentication Chip 8-UDFN (2x3)
NRND102,073 in stock
Datasheet Digi-Key Mouser Compare Prices

Overview

The ATECC508A-MAHDA-S is a secure cryptographic co-processor that provides hardware-based key storage for up to 16 keys. It integrates a FIPS-compliant random number generator and supports high-speed PKI algorithms including NIST P256 Elliptic Curve and SHA-256 with HMAC.

Why Choose This Part

This device offloads computationally intensive ECC algorithms from the host MCU while keeping private keys protected in hardened EEPROM. It features ultra-low power consumption, drawing only 0.15 uA in sleep mode and 6mA during active ECC operations.

Applications

IoT Node Authentication
Provides a secure root of trust for IoT devices connecting to cloud platforms like AWS IoT or Google Cloud IoT.
Ecosystem Control
Authenticates peripherals or accessories to ensure only genuine components work with a host system.
Secure Boot and Firmware Validation
Uses public key signatures to verify the authenticity of firmware before execution on a microcontroller.
Communication Key Exchange
Generates session keys for TLS or encrypted local communication without exposing private keys to the main MCU.

Key Specifications

Type Authentication Chip
Applications Networking and Communications
Mounting Type Surface Mount
Package / Case 8-UFDFN Exposed Pad
Supplier Device Package 8-UDFN (2x3)

Getting Started

Development is supported via the Microchip CryptoAuthentication Library (CAL), which can be integrated into MPLAB X IDE or third-party toolchains. Engineers often start with the CryptoAuth Trust Platform tools to configure the device and manage provisioning workflows.

Also Consider

ATECC608B MCHPMicrochip Technology - The successor to the 508A, providing improved hardware acceleration for AES and enhanced secure boot features.

Categories

Security ICs > Secure Elements