Microchip Technology ATECC108-MAHDA-T

ATECC108-MAHDA-T combines hardware-based elliptic-curve authentication with EEPROM for keys, certificates, and configuration data. A host can request cryptographic operations without exposing stored private keys on the interface. The MAHDA ordering option uses I2C, not the single-wire option available under other order codes.

The manufacturer identifies ATECC108-MAHDA-T as an 8-pad thermally enhanced UDFN, package code 8MA2, with a nominal 2.0 × 3.0 × 0.6 mm body. The existing LCDChip catalog names its package 8-UFDFN Exposed Pad; verify pad and exposed-pad geometry against the manufacturer drawing before PCB release.

Layout checks

• Use the 8MA2 package drawing for pad dimensions and pin-one orientation.
• Check the exposed thermal-pad footprint and assembly recommendations.
• Confirm the board's I2C pull-ups and supply decoupling.

The registered package JPG is pending on the production site; the reference image may not display until it is supplied.

The manufacturer's 8-pad UDFN pin-configuration figure identifies these signals for the I2C option:

Confirm pad numbering and the bottom-view orientation against the manufacturer's package pinout before layout; a generic package image is not a pinout drawing.

Operating specifications are distinct from absolute-maximum stress ratings. Use the manufacturer's controlled documentation for final electrical and mechanical limits.

Microchip's ATECC108A summary describes ATECC108A as compatible with ATECC108 when properly configured. Evaluate the exact ATECC108A-MAHDA-T ordering option if a follow-on device is needed, but do not assume that personalization data, command behavior, or lock configuration transfers unchanged. Check the package drawing, I2C behavior, operating limits, provisioning procedure, and product lifecycle before substitution.

The ATECC108-MAHCZ-T option uses a single-wire interface, so it is not an interface-equivalent substitute for this MAHDA I2C variant. No LCDChip internal replacement link is asserted here without an exact API match.

ATECC108 was documented under Atmel's CryptoAuthentication family and is listed under Microchip Technology. The manufacturer summary marks the original ATECC108 not recommended for new designs and identifies ATECC108A as its replacement family. Check current product documentation and procurement status for a new design.

Confirm the full order code, package marking, handling condition, and traceability information for received material. Cryptographic authenticity depends on correctly provisioned keys and host-side verification; the presence of the IC alone does not establish authenticity for a completed product.

Use the manufacturer datasheet and package drawing to verify electrical limits, pin orientation, security configuration, and assembly before production. The package illustration referenced above is awaiting upload to the production site. This page does not state real-time stock or pricing.