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Microchip Technology ECC204-TFLXAUTHS
- Part No.:
- ECC204-TFLXAUTHS
- Manufacturer:
- Microchip Technology
- Category:
- Specialized ICs
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Description:
- TRUST FLEX AUTH PROVISIONED ECC/
- Quantity:
Unit Price:$0
Ext Price:$0
- Payment:
- Shipping:
Product Details
ECC204-TFLXAUTHS - TrustFLEX SOIC Authentication IC
ECC204-TFLXAUTHS from Microchip Technology is the 8-lead SOIC, I2C ordering option of the pre-provisioned TrustFLEX ECC204 secure authentication device. It supports both asymmetric and symmetric authentication designs.
Technical basis: Microchip ECC204-TFLXAUTH Data Sheet DS40002470D and ECC204 Summary Data Sheet DS40002436. No current price or inventory claim is included.
Overview
ECC204-TFLXAUTHS is a client-side TrustFLEX device for disposable, accessory and ecosystem authentication. Microchip's exact ordering table identifies this S variant as a provisioned 8-lead SOIC part using I2C; the SWI version carries a -CZ suffix. Secure hardware protects a P-256 private key, certificates and a symmetric secret. A complete application still needs a compatible verifier, credential policy and failure handling.
Key Advantages
P-256 ECDSA signing and HMAC enable different verification architectures.
Sensitive key material resides in tamper-resistant hardware.
A predefined configuration supports secure manufacturing workflows.
The S code uses a familiar 8-lead SOIC and two-wire host interface.
Feature Summary
Hardware ECDSA signing uses a NIST P-256 private key.
SHA-256 and HMAC functions support authenticated-message workflows.
Stores a private key, certificates, symmetric key and user data under policy.
Includes a true random-number generator, monotonic counter and unique serial number.
Package & Footprint
The registered package is 8-SOIC (0.154", 3.90mm Width). Microchip identifies the S ordering option as an 8-lead SOIC. The local JPG is a generic package illustration, not a controlled land pattern or evidence of device marking.
- Verify pin 1 and footprint against the manufacturer mechanical drawing.
- Decouple VCC close to the package.
- Check I2C pull-ups and logic-level compatibility.
Pin Functions
For the 8-lead I2C SOIC option, pins 1, 2, 3 and 7 are NC; pin 4 is GND; pin 5 is SDA; pin 6 is SCL; and pin 8 is VCC. Confirm the top-view orientation in Microchip's drawing before layout release.
Key Specifications
| Exact order code | ECC204-TFLXAUTHS |
|---|---|
| Manufacturer | Microchip Technology |
| Trust option | Pre-provisioned TrustFLEX AUTH |
| Package | 8-lead SOIC; registered 8-SOIC (0.154", 3.90mm Width) |
| Interface | I2C, up to 400 kHz |
| Supply voltage | 1.65 V to 5.5 V under specified conditions |
| Operating temperature | -40°C to +105°C |
| Asymmetric operation | NIST P-256 ECDSA signing |
| Other cryptography | SHA-256 and HMAC |
| Secure storage | One ECC private key, device and signer certificates, one symmetric key |
| User memory | 64 bytes |
| Serial number and counter | Unique 72-bit serial; monotonic counter up to 10,000 |
Functional access depends on the actual provisioned configuration and locked policy.
Replacement Considerations
The SOIC I2C part is not a drop-in replacement for a -CZ single-wire device or a blank TrustCUSTOM device. Compare credentials, host verification flow, interface, electrical limits and mechanical footprint. No unverified internal alternative link is included.
Manufacturer Information
Microchip's ECC204-TFLXAUTH Data Sheet DS40002470D names ECC204-TFLXAUTHS as the provisioned 8-lead SOIC I2C variant. Its ECC204 summary identifies the TrustFLEX AUTH family as suitable for both asymmetric and symmetric authentication. Consult current data, errata and provisioning documentation for a production release.
Applications
Verify a provisioned accessory before granting host features.
Bind a consumable to a controlled verification workflow.
Use P-256 ECDSA to prove possession of the device private key.
Use HMAC with a compatible protected host verification design.
Quality & Authenticity
Check the full -TFLXAUTHS order code, package marking, lot traceability and provisioning records. The generic package image does not demonstrate identity. Validate expected certificate or HMAC behavior using a known host test procedure.
FAQ
Does this option use I2C?
Yes. The exact ECC204-TFLXAUTHS code is the SOIC I2C variant; -CZ indicates SWI.
Can it support both ECC and symmetric authentication?
The TrustFLEX AUTH family supports both approaches, subject to its provisioned policy and host integration.
Are certificates included?
The device has protected certificate storage; verify the actual provisioned credential set for the application.
Is it interchangeable with TrustCUSTOM?
No. Configuration and credential lifecycle differ and must be compared before substitution.
Engineering Notice
Security relies on a complete authentication protocol, trusted provisioning, verifier policy and failure handling. Validate I2C timing, power sequencing, electrical limits, selected cryptographic mode and Microchip's current errata in the final design.
ECC204-TFLXAUTHS Information
- Specifications
- Tags
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- CryptoAuthentication™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Type:
- Authentication Chip
- Applications:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
- Grade:
- -
- Qualification:
- -
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