Microchip Technology ECC204-MAVCZ-T

ECC204-MAVCZ-T belongs to Microchip's ECC204 CryptoAuthentication family for accessory authentication and ecosystem control. Microchip's exact ordering-code example identifies MA as the 2 × 3 × 0.6 mm thermally enhanced UDFN, V as the -40 °C to +105 °C grade, CZ as the PWM single-wire interface, and T as tape-and-reel packaging. Protected memory can hold an ECC private key, certificates, a symmetric secret, and user data under the chosen security configuration.

The catalog's registered package is 8-UFDFN Exposed Pad. Microchip specifies an eight-pad 2 × 3 × 0.6 mm thermally enhanced UDFN for ECC204-MAVCZ-T and recommends connecting the exposed backside paddle to GND. Confirm the current manufacturer land-pattern drawing, thermal pad, orientation mark, and assembly tolerances.

Layout checks

• Use the manufacturer's top-view pad numbering and controlled footprint.
• Route SI/O and ground for PWM single-wire communication.
• Review the exposed-paddle ground connection and supply approach.

The registered package JPG is absent locally and returns HTTP 404 on the production site. This draft must not be published until the correct image is restored and visually verified.

The ECC204 manufacturer's eight-pad UDFN pin table lists these functions for the CZ single-wire variant:

Microchip recommends connecting the exposed backside paddle to GND. The data sheet separately describes optional parasitic-power operation with an external capacitor; validate that mode before changing VCC wiring.

Typical figures are not guaranteed limits. Review controlled electrical and timing tables, especially when considering parasitic power.

ECC204-MAVDA-T shares the ECC204 family and UDFN size but uses I2C: pad 5 becomes SDA and pad 6 is SCL. It is not an automatic substitute for this CZ single-wire version. Other ECC204 packages and provisioning programs also differ. Match the exact host interface, footprint, temperature grade, credentials, and security policy before approving any alternative. No unverified LCDChip internal product link is asserted.

Microchip Technology's ECC204 CryptoAuthentication Summary Data Sheet, DS40002436C, gives the exact ECC204-MAVCZ-T ordering example and the eight-pad UDFN single-wire pin table. Revision C corrected the published PWM data rate to 100 kbps. The public sheet is a summary; request controlled detailed information where required for final qualification.

Verify the full ECC204-MAVCZ-T ordering code, lot traceability, package geometry, and intended provisioning state. Microchip notes that crypto-device top markings are intentionally non-descriptive, so the marking alone is not proof of device type or authenticity. Validate the complete chain of trust and host-side key handling.

Use the latest Microchip-controlled data for single-wire pullup and timing, VCC or optional parasitic-power design, exposed-paddle layout, provisioning, cryptographic commands, and host verification. Do not infer that blank or Trust Platform devices have identical preloaded credentials. Restore and verify the production package image before formal publication.