ATECC608B | Microchip Technology

Fully Customizable Secure Element

ATECC608B

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Status: Not Recommended for new designs
Network and accessories secure authentication

Overview

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  • Device Name:ATECC608B
  • Algorithm Type:ECC-P256 (ECDH and ECDSA), SHA256, AES128-GCM
  • Standby Typical (uA):0.03
  • Interface Type:Single-wire; I2C
  • Cryptographic co-processor with secure hardware-based key storage
  • Protected storage for up to 16 Keys, certificates or data
  • ECDH: FIPS SP800-56A Elliptic Curve Diffie-Hellman (ECDH)
  • NIST standard P256 elliptic curve support (ECC)
  • Hardware support for symmetric algorithms
  • SHA-256 & HMAC hash including off-chip context save/restore
  • AES-128: encrypt/decrypt, galois field multiply for GCM
  • Networking key management support
  • Turnkey PRF/HKDF calculation for TLS 1.2 & 1.3
  • Ephemeral key generation and key agreement in SRAM – Small message encryption with keys entirely protected
  • Secure boot support
  • Full ECDSA code signature validation, optional stored digest/signature – optional communication key disablement prior to secure boot
  • Encryption/Authentication for messages to prevent on-board attacks
  • Internal high-quality FIPS 800-90 A/B/C Random Number Generator (RNG)
  • Two high-endurance monotonic counters
  • Guaranteed unique 72-bit serial number
  • Two interface options available
  • High-speed single pin interface with One GPIO pin
  • 8-pad UDFN, 8-lead SOIC, and 3-lead CONTACT packages
  • Operating temperature up to 100C
  • <150nA Sleep current
  • 1.8V to 5.5V IO levels, 2.0V to 5.5V supply voltage
  • 1MHz Standard I2C interface

The Microchip ATECC608B 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, medical, as well as accessories and consumables authentication and more. In addition, the ATECC608B offer an integrated AES hardware accelerator strengthening hardware based security for LoRaWAN applications and enable secure boot capabilities for very small microcontrollers. 


The ATECC608B is a secure element from the Microchip CryptoAuthenticationTM 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. Similar to all Microchip CryptoAuthentication products, the new ATECC608A employs ultra-secure hardware-based cryptographic key storage and cryptographic countermeasures which eliminate potential backdoors linked to software weaknesses.


The device is agnostic of any microprocessor (MPU) or microcontroller (MCU) and compatible with Microchip AVR/ARM MCUs or MPUs. As with all CryptoAuthentication devices, the ATECCC608B 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.

To help accelerating your development, take a look at the Trust Platform for the ATECC608B and consider :

- ATECC608B Trust&GO for TLS based network secure authentication. The device comes pre-provisioned secure element with a generic static certificate to reduce third party certificate authority costs. No configuration needed allowing you to focus solely on your application code. Compatible with AWS IoT Multi-account registration architecture. 

- ATECC608B Trust&GO for LoRaWAN based networks. The device comes pre-provisioned secure element with The Things Industries or Actility join server symmetric keys depending on the part number chosen. In addition, IEEE addresses are also part of the pre-provisioned device. 

- ATECC608B TrustFLEX for TLS based network secure authentication in addition to many more use cases. The device comes pre-configured device with more use cases than just the device to cloud secure authentication Trust&GO offer. It offers pre-architected implementation for accessory authentication, firmware validation, secure boot assistance, key rotation and more. Compatible for AWS IoT, Microsoft Azure, Google Cloud Platform and in general any TLS networks with code examples for WolfSSL, mBedTLS, CycloneSSL. 

- ATECC608B TrustCUSTOM secure element is a fully customizable device in case your security architecture demands to go beyond the Trust&GO and TrustFLEX use cases. 

- For Linux systems, the Trust Platform ATECC608B variances leverage the PKCS#11 interface between the microprocessor and the secure element. Check our code example. 

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ATECC608B
Part Number: Quantity: Price per Unit (in USD): Total Amt:

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Catalog Parts for ATECC608B

All parts

8
3
UDFN
CONTACT
SOIC
-40C to +100C
-40C to +85C
T/R
TUBE
$0.66
$0.81
$0.60
$0.58
$0.67
ATECC608B-MAVDA-S
8 UDFN -40C to +100C T/R $0.66
In Stock Now
View Samples

ECC/ECDH, 100C, I2C, small 3K reel UDFN

Country of Origin: Taiwan, Thailand
This product is only available for purchase with an approved quote. Request a Quote
In Stock Now: 9,500
Partial Tape and Reel
Up to 500 partial units estimated to ship on 08-Sep-2026
Full Tape and Reel
Up to 9000 full units estimated to ship on 11-Sep-2026
This lead time represents a snapshot in time. Actual delivery may vary depending on order timing, volume, and other factors. Microchip remains committed to meeting or improving our committed dates to the best of our ability.Lead Time For Additional Quantities

Additional quantities estimated to ship by 19-Oct-2026
Buy Now Pricing
1-24
25-99
100 +
$0.99
$0.83
$0.75
Estimated Large-Quantity Pricing
1000-4999
5000 +
*$0.70
*$0.66
ATECC608B-RBHCZ-B
3 CONTACT -40C to +85C TUBE $0.81
In Stock Now
View Samples

ECDH/ECC 10Kb, 3-CONTACT, SWI, Bulk

Country of Origin: Thailand
This product is only available for purchase with an approved quote. Request a Quote
In Stock Now: 3,157
Partial TUBE
Up to 21 partial units estimated to ship on 08-Sep-2026
Full TUBE
Up to 3136 full units estimated to ship on 14-Sep-2026
This lead time represents a snapshot in time. Actual delivery may vary depending on order timing, volume, and other factors. Microchip remains committed to meeting or improving our committed dates to the best of our ability.Lead Time For Additional Quantities

Additional quantities estimated to ship by 24-Oct-2026
Buy Now Pricing
1-24
25-99
100 +
$1.23
$1.02
$0.93
Estimated Large-Quantity Pricing
1000-4999
5000 +
*$0.86
*$0.81
ATECC608B-RBHCZ-T
3 CONTACT -40C to +85C T/R $0.81
In Stock Now
View Samples

ECDH/ECC 10Kb, 3-CONTACT, SWI, T/R

Country of Origin: Thailand
This product is only available for purchase with an approved quote. Request a Quote
In Stock Now: 7,166
Partial Tape and Reel
Up to 2166 partial units estimated to ship on 08-Sep-2026
Full Tape and Reel
Up to 5000 full units estimated to ship on 14-Sep-2026
This lead time represents a snapshot in time. Actual delivery may vary depending on order timing, volume, and other factors. Microchip remains committed to meeting or improving our committed dates to the best of our ability.Lead Time For Additional Quantities

Additional quantities estimated to ship by 21-Nov-2026
Buy Now Pricing
1-24
25-99
100 +
$1.23
$1.02
$0.93
Estimated Large-Quantity Pricing
1000-4999
5000 +
*$0.86
*$0.81
ATECC608B-SSVDA-T
8 SOIC -40C to +100C T/R $0.66
Available To Order Now
Please select a different part available in this familyView Samples

ECC/ECDH, 100C, I2C, SOIC T/R

Country of Origin: China
This product is only available for purchase with an approved quote. Request a Quote
Available To Order Now
Place your order today and we can ship on 24-Oct-2026. Larger volumes may require additional time. Order now, estimated to ship on 24-Oct-2026
Buy Now Pricing
1-24
25-99
100 +
$0.99
$0.83
$0.75
Estimated Large-Quantity Pricing
1000-4999
5000 +
*$0.70
*$0.66
ATECC608B-SSHDA-B
8 SOIC -40C to +85C TUBE $0.60
In Stock Now
Please select a different part available in this familyView Samples

ECC/ECDH, I2C, SOIC Bulk

Country of Origin: China, Thailand
This product is only available for purchase with an approved quote. Request a Quote
In Stock Now: 1,030
Partial TUBE
Up to 30 partial units estimated to ship on 08-Sep-2026
Full TUBE
Up to 500 full units estimated to ship on 11-Sep-2026
Up to 500 full units estimated to ship on 12-Sep-2026
Additional Stock Arriving. You can secure stock by ordering now, and we will ship the product up to the ordered quantities on the dates given below. Incoming Factory Stock. Order Now to Secure

Up to 9200 full units estimated to ship on 17-Sep-2026
This lead time represents a snapshot in time. Actual delivery may vary depending on order timing, volume, and other factors. Microchip remains committed to meeting or improving our committed dates to the best of our ability.Lead Time For Additional Quantities

Additional quantities estimated to ship by 14-Sep-2026
Buy Now Pricing
1-24
25-99
100 +
$0.90
$0.75
$0.68
Estimated Large-Quantity Pricing
1000-4999
5000 +
*$0.63
*$0.60
ATECC608B-SSHCZ-B
8 SOIC -40C to +85C TUBE $0.60
In Stock Now
Please select a different part available in this familyView Samples

ECC/ECDH, SWI, SOIC Bulk

Country of Origin: China, Thailand
This product is only available for purchase with an approved quote. Request a Quote
In Stock Now: 16,040
Partial TUBE
Up to 40 partial units estimated to ship on 08-Sep-2026
Full TUBE
Up to 800 full units estimated to ship on 08-Sep-2026
Up to 13500 full units estimated to ship on 09-Sep-2026
Up to 1700 full units estimated to ship on 11-Sep-2026
This lead time represents a snapshot in time. Actual delivery may vary depending on order timing, volume, and other factors. Microchip remains committed to meeting or improving our committed dates to the best of our ability.Lead Time For Additional Quantities

Additional quantities estimated to ship by 15-Feb-2027
Buy Now Pricing
1-24
25-99
100 +
$0.90
$0.75
$0.68
Estimated Large-Quantity Pricing
1000-4999
5000 +
*$0.63
*$0.60
ATECC608B-SSHCZ-T
8 SOIC -40C to +85C T/R $0.60
Available To Order Now
View Samples

ECC/ECDH, SWI, SOIC T/R

Country of Origin: China, Thailand
This product is only available for purchase with an approved quote. Request a Quote
Available To Order Now
Place your order today and we can ship on 15-Feb-2027. Larger volumes may require additional time. Order now, estimated to ship on 15-Feb-2027
Buy Now Pricing
1-24
25-99
100 +
$0.90
$0.75
$0.68
Estimated Large-Quantity Pricing
1000-4999
5000 +
*$0.63
*$0.60
ATECC608B-SSHDA-T
8 SOIC -40C to +85C T/R $0.60
Order Incoming Factory Stock Now
View Samples

ECC/ECDH, I2C, SOIC T/R

Country of Origin: China, Thailand
This product is only available for purchase with an approved quote. Request a Quote
Order Incoming Factory Stock Now
Additional Stock Arriving. You can secure stock by ordering now, and we will ship the product up to the ordered quantities on the dates given below. Incoming Factory Stock. Order Now to Secure

Up to 4000 full units estimated to ship on 17-Sep-2026
This lead time represents a snapshot in time. Actual delivery may vary depending on order timing, volume, and other factors. Microchip remains committed to meeting or improving our committed dates to the best of our ability.Lead Time For Additional Quantities

Additional quantities estimated to ship by 24-May-2027
Buy Now Pricing
1-24
25-99
100 +
$0.90
$0.75
$0.68
Estimated Large-Quantity Pricing
1000-4999
5000 +
*$0.63
*$0.60
ATECC608B-MAHCZ-T
8 UDFN -40C to +85C T/R $0.58
Available To Order Now
View Samples

ECC/ECDH, SWI, 15K reel UDFN

Country of Origin: Taiwan, Thailand
This product is only available for purchase with an approved quote. Request a Quote
Available To Order Now
Place your order today and we can ship on 15-Feb-2027. Larger volumes may require additional time. Order now, estimated to ship on 15-Feb-2027
Buy Now Pricing
1-24
25-99
100 +
$0.87
$0.72
$0.66
Estimated Large-Quantity Pricing
1000-4999
5000 +
*$0.61
*$0.58
ATECC608B-MAHDA-T
8 UDFN -40C to +85C T/R $0.58
In Stock Now
View Samples

ECC/ECDH, I2C, 15K reel UDFN

Country of Origin: Taiwan, Thailand
This product is only available for purchase with an approved quote. Request a Quote
In Stock Now: 6,440
Partial Tape and Reel
Up to 6440 partial units estimated to ship on 08-Sep-2026
Full Tape and Reel
Additional Stock Arriving. You can secure stock by ordering now, and we will ship the product up to the ordered quantities on the dates given below. Incoming Factory Stock. Order Now to Secure

Up to 15000 partial units estimated to ship on 22-Sep-2026
This lead time represents a snapshot in time. Actual delivery may vary depending on order timing, volume, and other factors. Microchip remains committed to meeting or improving our committed dates to the best of our ability.Lead Time For Additional Quantities

Additional quantities estimated to ship by 12-Apr-2027
Buy Now Pricing
1-24
25-99
100 +
$0.87
$0.72
$0.66
Estimated Large-Quantity Pricing
1000-4999
5000 +
*$0.61
*$0.58
ATECC608B-MAHCZ-S
8 UDFN -40C to +85C T/R $0.60
Available To Order Now
Please select a different part available in this familyView Samples

ECC/ECDH SWI, small 3K reel UDFN

Country of Origin: Taiwan, Thailand
This product is only available for purchase with an approved quote. Request a Quote
Available To Order Now
Place your order today and we can ship on 15-Feb-2027. Larger volumes may require additional time. Order now, estimated to ship on 15-Feb-2027
Buy Now Pricing
1-24
25-99
100 +
$0.90
$0.75
$0.68
Estimated Large-Quantity Pricing
1000-4999
5000 +
*$0.63
*$0.60
ATECC608B-MAHDA-S
8 UDFN -40C to +85C T/R $0.60
In Stock Now
View Samples

ECC/ECDH, I2C, small 3K reel UDFN

Country of Origin: Taiwan, Thailand
This product is only available for purchase with an approved quote. Request a Quote
In Stock Now: 83,825
Partial Tape and Reel
Up to 83825 partial units estimated to ship on 08-Sep-2026
Full Tape and Reel
Additional Stock Arriving. You can secure stock by ordering now, and we will ship the product up to the ordered quantities on the dates given below. Incoming Factory Stock. Order Now to Secure

Up to 102000 partial units estimated to ship on 07-Oct-2026
Up to 30000 partial units estimated to ship on 10-Oct-2026
This lead time represents a snapshot in time. Actual delivery may vary depending on order timing, volume, and other factors. Microchip remains committed to meeting or improving our committed dates to the best of our ability.Lead Time For Additional Quantities

Additional quantities estimated to ship by 22-Mar-2027
Buy Now Pricing
1-24
25-99
100 +
$0.90
$0.75
$0.68
Estimated Large-Quantity Pricing
1000-4999
5000 +
*$0.63
*$0.60
ATECC608B-SSVDA-B
8 SOIC -40C to +100C TUBE $0.67
Available To Order Now
Please select a different part available in this familyView Samples

ECC/ECDH, 100C, I2C, SOIC Bulk

Country of Origin: China
This product is only available for purchase with an approved quote. Request a Quote
Available To Order Now
Place your order today and we can ship on 24-Oct-2026. Larger volumes may require additional time. Order now, estimated to ship on 24-Oct-2026
Buy Now Pricing
1-24
25-99
100 +
$1.01
$0.84
$0.76
Estimated Large-Quantity Pricing
1000-4999
5000 +
*$0.71
*$0.67
ATECC608B-MAVDA-T
8 UDFN -40C to +100C T/R $0.66
Available To Order Now
View Samples

ECC/ECDH, 100C, I2C, 15K reel UDFN

Country of Origin: Taiwan, Thailand
This product is only available for purchase with an approved quote. Request a Quote
Available To Order Now
Place your order today and we can ship on 26-Oct-2026. Larger volumes may require additional time. Order now, estimated to ship on 26-Oct-2026
Buy Now Pricing
1-24
25-99
100 +
$0.99
$0.83
$0.75
Estimated Large-Quantity Pricing
1000-4999
5000 +
*$0.70
*$0.66

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