ATECC508A-MAHCZ-S Special Function by Microchip Technology

Status: Not Recommended
Series: ATECC508A
RoHS: Compliant
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Recommend starting with the Trust Platform ATECC608B (Trust&GO, TrustFLEX, TrustCUSTOM)

The ATECC508A crypto element is the first crypto device to integrate ECDH (Elliptic Curve Diffie–Hellman) key agreement, which makes it easy to add confidentiality (encryption/decryption) to digital systems including Internet of Things (IoT) nodes used in home automation, industrial networking, accessory and consumable authentication, medical, mobile and other applications. In addition to ECDH, the ATECC508A has ECDSA sign-verify capabilities built-in to provide highly secure asymmetric authentication. The combination of ECDH and ECDSA makes the device an ideal way to provide all three pillars of security such as confidentiality, data integrity, and authentication when used with MCU or MPUs running encryption/decryption algorithms (i.e. AES) in software. Similar to all Microchip 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. This next-generation CryptoAuthentication device is compatible with any microprocessor (MPU) or microcontroller (MCU) including SMART and Microchip 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 including those that require longer battery life and flexible form factors. The ATECC508A is downward compatible with the ATECC108A, ATECC108, ATSHA204A, and ATSHA204 crypto element devices.

The Microchip 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 a secure element from the Microchip 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 Microchip CryptoAuthentication products, the new ATECC508A employs ultra-secure hardware-based cryptographic key storage and cryptographic countermeasures which are more robust than software-based key storage.

The device is compatible with any microprocessor (MPU) or microcontroller (MCU) including Microchip and Microchip AVR/ARM 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.

Prices starting from US$0.70


Distributor Starting From Stock
Logo for Newark Electronics Newark Electronics US$0.84
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Logo for Future Electronics Future Electronics US$0.84
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Logo for Avnet America Avnet America US$1.04
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Logo for Microchip Technology Microchip Technology US$0.70
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Features

Recommend using the Trust Platform ATECC608B
Easy way to run ECDSA and ECDH Key Agreement
ECDH key agreement makes encryption/decryption easy
Ideal for IoT node security
Authentication without the need for secure storage in the host
No requirement for high-speed computing in client devices
Cryptographic accelerator with Secure Hardware-based Key Storage
Performs High-Speed Public Key (PKI) Algorithms
NIST Standard P256 Elliptic Curve Support
SHA-256 Hash Algorithm with HMAC Option
Host and Client Operations
256-bit Key Length
Storage for up to 16 Keys
Two high-endurance monotonic counters
Guaranteed Unique 72-bit Serial Number
Internal High-quality FIPS Random Number Generator (RNG)
10Kb EEPROM Memory for Keys, Certificates, and Data
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
Single Wire or I2C Interface
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

Specifications

Device Name ATECC508A
Algorithm Type ECC P256 (ECDH and ECDSA), SHA256
Interface Type Single-wire; I2C
Standby Typical (uA) 2
Pins | Packaging 8 | UDFN
Temp Range -40C to +85C
Packing Media Tape and reel (3000)

Resources


Application Notes
AN_8983 - ATECC508A Node Authentication Example Using Asymmetric PKI
AN_8984 - CryptoAuthLib: Driver Support for CryptoAuthentication Devices
AN_8863 - Authentication Counting
AN_8826 - PCB Mounting Guidelines for Surface Mount Packages
AN_8847 - CryptoAuthentication SWI and I2C Interfaces Seamless Debugging Using Saleae Logic Analyzer
AN_8932 - ATECC508A Public Key Validation
AN_8981 - CryptoAuthentication Encrypted Reads and Writes
AN_8843 - Generating Random Secrets: ATSHA204A, ATECC108A, and ATECC508A
AN_8754 - Application Brief: Analyzing Strength of Security
AN_8971 - ATECC Production Provisioning Guide
AN_8845 - ATSHA204A and ATECC508A Personalization Guide
AN_8974 - ATECC Compressed Certificate Definition
AN_8860 - Secure Personalization with Transport Key Authentication
AN_8750 - ACES Overview
AN_8936 - CryptoAuthentication Data Zone CRC Calculation
AN4041 - 3-lead CONTACT Package Usage
CryptoAuthentication Product Uses - General Purpose
AN2589 - Differences Between the ATECC608A and ATECC508A CryptoAuthentication Devices
Using the ATECC508A to Perform Symmetric Authentication of a Remote Device - Using the ATECC508A to Perform Symmetric Authentication of a Remote Device Application Note
Using the ATECC508A to Perform Asymmetric Authentication of a Remote Device AN - Using the ATECC508A to Perform Asymmetric Authentication of a Remote Device Application Ntoe



Environmental Information

JEDEC Indicator e4
ROHS Compliant
China EFUP Compliant
Device Weight (g) 0.0096
Shipping Weight (kg) 0.084
Lead Count 8
Package Type UDFN
Package Width or Size 2x3x0.6mm
Soldering Composition NiPdAu

Alternative Descriptions

8Ld Udfn Generic Swi, 3K T&r 8 Udfn 2X3X0.6Mm T/R Rohs Compliant: Yes |Microchip ATECC508A-MAHCZ-S | Newark Electronics
ATECC508A Series 5.5V 1 MHz Surface Mount Cryptographic Co-Processor - UDFN-8 | Future Electronics
EEPROM Serial (1-Wire) 10K-bit 10K x 1 2.5V/3.3V/5V 8-Pin UDFN T/R | Avnet America
8ld UDFN Generic SWI, 3K T&R | Microchip Technology
CRYPTO AUTHENTICATION DEVICE, I2C, UDFN8 | Farnell


Frequently Asked Questions

Where can I find additional details, specifications and documents for a ATECC508A-MAHCZ-S?

Additional datasheets, footprints and schematics for ATECC508A-MAHCZ-S are listed on our Part Details page. You can also find images and similar parts to ATECC508A-MAHCZ-S on this page.

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What category does ATECC508A-MAHCZ-S fall under?

The ATECC508A-MAHCZ-S is listed under Semiconductors - ICs > Special Function.

Can I view similar or alternative parts?

You can view similar parts to ATECC508A-MAHCZ-S when available in the Special Function range under the specifications section at the bottom of the details page.

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Is the ATECC508A-MAHCZ-S RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Microchip Technology.

Which authorised distributors for ATECC508A-MAHCZ-S have stock available?

Authorised distributors including Newark Electronics, Future Electronics, Avnet America, Microchip Technology and Farnell have stock available or on a lead time for ATECC508A-MAHCZ-S.

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