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ATECC508A Summary

(ファイルサイズ: 613KB, 14 ページ, 改訂 B, 更新日: 10/2015)

Secure authentication and product validation device datasheet summary. The complete document is available under NDA. For more information, please contact your local Atmel sales office.


The Atmel ATECC508A integrates ECDH (Elliptic Curve Diffie–Hellman) security protocol—an ultra-secure method to provide key agreement for encryption/decryption, along with ECDSA (Elliptic Curve Digital Signature Algorithm) sign-verify authentication—for the Internet of Things (IoT) market including home automation, industrial networking, accessory and consumable authentication, medical, mobile and more.

The ATECC508A is the second integrated circuit (IC) in the Atmel CryptoAuthentication™ portfolio with advanced Elliptic Curve Cryptography (ECC) capabilities. With ECDH and ECDSA being built right in, this device is ideal for the rapidly growing IoT market by easily supplying the full range of security such as confidentiality, data integrity, and authentication to systems with MCU or MPUs running encryption/decryption algorithms (i.e. AES). Similar to all Atmel CryptoAuthentication products, the new ATECC508A employs ultra-secure hardware-based cryptographic key storage and cryptographic countermeasures which are more secure than software-based key storage.

The device is compatible with any microprocessor (MPU) or microcontroller (MCU) including Atmel | SMART and Atmel AVR MCUs or MPUs. As with all CryptoAuthentication devices, the ATECCC508A delivers extremely low-power consumption, requires only a single GPIO over a wide voltage range, and has a tiny form factor making it ideal for a variety of applications that require longer battery life and flexible form factors.


  • Crypto Element Device with Secure Hardware-based Key Storage
  • Performs High-Speed Public Key Algorithms (PKI): ECDSA and ECDH
  • NIST Standard P256 Elliptic Curve Support
  • SHA-256 Hash Algorithm with HMAC Option
  • Host and Client Operations
  • Two High-endurance Monotonic Counters
  • Guaranteed Unique 72-bit Serial Number
  • Internal High-quality FIPS Random Number Generator (RNG)
  • Storage for up to 16 Keys
  • Multiple Options for Consumption Logging and One Time Write Information
  • Intrusion Latch for External Tamper Switch or Power-on Chip Enablement
  • 2.0V to 5.5V Supply Voltage Range
  • 1.8V to 5.5V IO Levels
  • <150nA Sleep Current
  • 8-pad UDFN, 8-lead SOIC, and 3-lead CONTACT Packages



Interface Type:

Single-wire; I2C



Operating Voltage (Vcc):

2.0 to 5.5

Algorithm Type:

Elliptic Curve (ECDH and ECDSA)

Key Size:




Operating Current Typical (mA):


Temp. Range (deg C):

-40 to 85


注文コード パッケージ 操作範囲 キャリアタイプ サンプル Atmel ストアでの在庫の有無1 単価2 オンラインで購入
ATECC508A-MAHCZ-T UDFN 8MA2 8 Industrial (A) (-40°C to 85°C) Tape&Reel 依頼
ATECC508A-MAHDA-T UDFN 8MA2 8 Industrial (A) (-40°C to 85°C) Tape&Reel 依頼
ATECC508A-MAHCZ-S UDFN 8MA2 8 Industrial (A) (-40°C to 85°C) Tape&Reel
ATECC508A-MAHDA-S UDFN 8MA2 8 Industrial (A) (-40°C to 85°C) Tape&Reel
ATECC508A-RBHCZ-T CONTACT 3RB 3 Industrial (A) (-40°C to 85°C) Tape&Reel 依頼
ATECC508A-SSHCZ-B SOIC 8S1 8 Industrial (A) (-40°C to 85°C) Tube 依頼
ATECC508A-SSHCZ-T SOIC 8S1 8 Industrial (A) (-40°C to 85°C) Tape&Reel 依頼
ATECC508A-SSHDA-B SOIC 8S1 8 Industrial (A) (-40°C to 85°C) Tube 依頼
ATECC508A-SSHDA-T SOIC 8S1 8 Industrial (A) (-40°C to 85°C) Tape&Reel 依頼

1Backlog orders can be placed for items currently not available.
2Suggested retail price per unit for budgetary use only.