Microchip Technology ATECC608B-MAHDA-T ECC Secure Element — P-256, I2C, UDFN-8
- Part No.:
- ATECC608B-MAHDA-T ECC Secure Element — P-256, I2C, UDFN-8
- Manufacturer:
- Microchip Technology
- Category:
- Specialized ICs
- Package:
- 8-UFDFN Exposed Pad
- Description:
- IC AUTHENTICATION CHIP 8UDFN
- Quantity:
- Payment:

- Shipping:

Inventory:6,541
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Product details
Microchip ATECC608B-MAHDA-T - ECC Secure Element
The {mpn} is Microchip's ECC-based CryptoAuthentication device: an asymmetric secure element built around NIST P-256 ECDSA/ECDH in hardware, with AES-128 and SHA-256 accelerators alongside. The private key is generated and used inside the chip and never leaves it, which makes the part a natural root of identity for IoT nodes, TLS clients and signed-firmware schemes. Package/interface: I2C interface, 8-pad UDFN (2 × 3 mm).
Key Features
- Hardware ECC: NIST P-256 ECDSA sign/verify and ECDH key agreement
- AES-128 and SHA-256 accelerators on the same die
- 16 key/storage slots with per-slot cryptographic policies
- Secure hardware key generation - private key never exposed
- I2C interface up to 1 MHz; wide supply range across the family
- NIST SP 800-90A/B/C compliant random number generator; tamper-resistant design
Technical Specifications
| Manufacturer classification | Microchip official: CryptoAuthentication - ECC asymmetric secure element |
| Manufacturer | Microchip Technology |
| Family | ATECC608B CryptoAuthentication |
| Crypto engine | ECC P-256 (ECDSA/ECDH) + AES-128 + SHA-256 |
| Key storage | 16 slots, per-slot policies |
| Interface | I2C (up to 1 MHz) |
| Supply voltage | 1.8–5.5 V (family range) |
| Random generator | NIST SP 800-90A/B/C compliant TRNG |
| Package | I2C interface, 8-pad UDFN (2 × 3 mm) |
Typical Applications
Per Microchip's documentation: IoT node identity and secure TLS handshakes (client certificates), PKI token provisioning at scale, secure boot and firmware-signature verification, and anti-counterfeiting where public-key trust chains are required.
Procurement & Availability
- Availability: in stock - live quantity shown above
- MOQ: 1 pc
- Lead time: ships within 24 h for orders confirmed before 15:00 CST
- Packaging: factory sealed
- Warranty: 12 months · traceability: date code and lot on request
Frequently Asked Questions
Q: Why asymmetric instead of SHA204A?
A: With ECC the verifier holds only a public key - you can authenticate thousands of devices without storing a secret on the host, and the private key never exists outside the chip.
Q: ATECC608B vs ATECC608A?
A: Same crypto core; the B variant adds AES-128, updated counter protections and pre-provisioned cloud trust options (Google/AWS/Microsoft variants).
Q: Provisioning at scale?
A: Trust&GO / TrustFLEX variants arrive pre-configured for popular clouds; this standard part is configured by the customer during production.
Parameter Sources
- Microchip ATECC608B product page + data sheet (DS40001925: P-256 ECDSA/ECDH, AES-128, SHA-256, 16 slots, I2C)
- Microchip CryptoAuthentication family overview
Pictures are for reference only; actual product prevails. Specifications per the manufacturer datasheet - verify against the current revision before design-in.
- Specifications
- FAQ
- Product Comparison
- Tags
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- CryptoAuthentication™
- Package/Case:
- 8-UFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Authentication Chip
- Applications:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-UDFN (2x3)
- Grade:
- -
- Qualification:
- -
1. How to order ATECC608B-MAHDA-T ECC Secure Element — P-256, I2C, UDFN-8 on SANJIA TECHNOLOGY LTD.?
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3. Are the ATECC608B-MAHDA-T ECC Secure Element — P-256, I2C, UDFN-8 price and inventory displayed accurate?
The price and inventory of ATECC608B-MAHDA-T ECC Secure Element — P-256, I2C, UDFN-8 fluctuates frequently and cannot be updated in time, it will be updated periodically within 24 hours. And, our quotation usually expires after 5 days.
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Warm Tips: It may take up to 24 hours for the carriers to display tracking information. Usually, express delivery takes 3-5 days, and registered mail takes 25-60 days.
6. What is the process for return or replacement of ATECC608B-MAHDA-T ECC Secure Element — P-256, I2C, UDFN-8?
All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the ATECC608B-MAHDA-T ECC Secure Element — P-256, I2C, UDFN-8 we delivered, we will accept the replacement or return of the ATECC608B-MAHDA-T ECC Secure Element — P-256, I2C, UDFN-8 only when all of the below conditions are fulfilled:
(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of ATECC608B-MAHDA-T ECC Secure Element — P-256, I2C, UDFN-8.
(3)The PartNo is unused and only in the original unpacked packaging.
Two processes to return the products:
(1)Inform us within 90 days
(2)Obtain Requesting Return Authorizations
7.How to contact us to get technical supports, such as ATECC608B-MAHDA-T ECC Secure Element — P-256, I2C, UDFN-8 pin diagram, ATECC608B-MAHDA-T ECC Secure Element — P-256, I2C, UDFN-8 datasheet?
If you need any after-sales service, please do not hesitate to contact us.
| Image | ![]() |
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| Part Number | ATECC608B-MAHDA-T ECC Secure Element — P-256, I2C, UDFN-8 | ATECC608B-MAHCZ-S | ATECC608B-SSHDA-T | ATECC608B-MAHDA-S | ATECC608B-MAVDA-T |
| Manufacturer | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Series | CryptoAuthentication™ | CryptoAuthentication™ | CryptoAuthentication™ | CryptoAuthentication™ | CryptoAuthentication™ |
| Package/Case | 8-UFDFN Exposed Pad | 8-UFDFN Exposed Pad | 8-SOIC (0.154", 3.90mm Width) | 8-UFDFN Exposed Pad | 8-UFDFN Exposed Pad |
| Packaging | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) |
| Product Status | Active | Active | Active | Active | Active |
| Programmable | Not Verified | Not Verified | Not Verified | Not Verified | Not Verified |
| Type | Authentication Chip | Authentication Chip | Authentication Chip | Authentication Chip | Authentication Chip |
| Applications | - | - | - | - | - |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Supplier Device Package | 8-UDFN (2x3) | 8-UDFN (2x3) | 8-SOIC | 8-UDFN (2x3) | 8-UDFN (2x3) |
| Grade | - | - | - | - | - |
| Qualification | - | - | - | - | - |

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ATECC608B-MAHDA-T ECC Secure Element — P-256, I2C, UDFN-8.pdf