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Microchip Technology ECC204-TFLXAUTHS-CZ
- Part No.:
- ECC204-TFLXAUTHS-CZ
- 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-CZ - TrustFLEX SWI Authentication IC
ECC204-TFLXAUTHS-CZ from Microchip Technology is a provisioned TrustFLEX ECC204 secure authentication device in an 8-lead SOIC package with a single-wire interface (SWI). It supports asymmetric and symmetric authentication designs.
Technical basis: Microchip ECC204-TFLXAUTH Data Sheet DS40002470D. Check the exact provisioned policy before integration.
Overview
ECC204-TFLXAUTHS-CZ is a client-side authentication device for disposable, accessory and ecosystem control. Microchip's ordering table identifies this exact -CZ code as a provisioned TrustFLEX AUTH, 8-lead SOIC, SWI part. Protected hardware holds a P-256 private key, certificates and a symmetric secret. A complete system also requires a compatible verifier, credential policy and failure handling.
Key Advantages
P-256 ECDSA signing and HMAC support different verification architectures.
Sensitive key material remains in dedicated secure hardware.
A predefined configuration supports controlled manufacturing and enrollment.
The -CZ SOIC order code uses SWI rather than the two-wire I2C interface.
Feature Summary
Hardware ECDSA signing uses a NIST P-256 private key.
SHA-256 and HMAC functions support authenticated-message workflows.
Storage supports a private key, device and signer certificates, a symmetric key and user data under policy.
Includes a true random-number generator, a monotonic counter and a unique serial number.
Package & Footprint
The registered package is 8-SOIC (0.154", 3.90mm Width). Microchip identifies the -CZ option as an 8-lead, 0.150-inch wide-body JEDEC SOIC. The local JPG is a generic package illustration, not a controlled land pattern or proof of device marking.
- Verify pin 1 and footprint against the manufacturer mechanical drawing.
- Decouple VCC close to the package.
- Check SWI bus loading, pull-up and logic-level requirements.
Pin Functions
For the 8-lead SWI SOIC option, pins 1, 2, 3, 6 and 7 are NC; pin 4 is GND; pin 5 is SI/O; and pin 8 is VCC. Confirm the top-view orientation in Microchip's drawing before layout release.
Key Specifications
| Exact order code | ECC204-TFLXAUTHS-CZ |
|---|---|
| Manufacturer | Microchip Technology |
| Trust option | Provisioned TrustFLEX AUTH |
| Package | 8-lead SOIC; registered 8-SOIC (0.154", 3.90mm Width) |
| Interface | Single-wire interface (SWI), up to 125 kbps |
| 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 -CZ SWI part is not a drop-in replacement for an I2C ECC204 variant 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-CZ as the provisioned 8-lead SOIC SWI variant. Consult the manufacturer's 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 complete -TFLXAUTHS-CZ order code, package marking, lot traceability and provisioning records. The generic package image does not establish identity. Validate expected certificate or HMAC behavior with a known host test procedure.
FAQ
Does this option use I2C?
No. The exact ECC204-TFLXAUTHS-CZ code uses SWI; the SOIC I2C ordering option omits the -CZ suffix.
Can it support ECC and symmetric authentication?
The TrustFLEX AUTH family supports both approaches, subject to its provisioned policy and host integration.
Are certificates included?
The device supports 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 SWI timing, power sequencing, electrical limits, selected cryptographic mode and Microchip's current errata in the final design.
ECC204-TFLXAUTHS-CZ 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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