Microchip Technology ATECC608B-TCSMS

TrustCUSTOM is the fully configurable tier of Microchip's Trust Platform. The ATECC608B-TCSMS ordering family uses the SOIC package and allows a customer-defined security policy to be provisioned through Microchip's secure provisioning workflow. Unlike a fixed Trust&GO device, a generic part-number match does not establish the actual certificate chain, slot permissions, locked state or authorized application. Microchip also notes that blank TrustCUSTOM sample devices correspond to standard ATECC608B devices; a blank sample must not be represented as having a customer's production credentials.

The registered package is 8-SOIC (0.154", 3.90mm Width). Microchip lists ATECC608B-TCSMS as the 8-pin SOIC TrustCUSTOM ordering family for the standard industrial temperature range. Use the manufacturer's narrow-body SOIC drawing and recommended land pattern for PCB release; the generic image does not prove device marking or provisioning.

Layout checks

• Match pin 1 and body orientation to the Microchip top-view diagram.
• Confirm the provisioned interface before wiring host pull-ups or GPIO.
• Use the current mechanical drawing rather than the generic package image for pad dimensions.

The local 8-SOIC JPG is a package illustration only.

The public ATECC608B 8-SOIC top-view diagram assigns the following pins. Confirm whether the provisioned device uses I2C or single-wire (SWI) before finalizing a schematic.

Pin numbering is top view. Interface choice and GPIO behavior are configuration-dependent.

These are public ATECC608B family limits, not a substitute for the controlled data sheet or a customer-specific security configuration.

Microchip identifies a blank SOIC ATECC608B-SSHDA sample as related to the TCSMS sample path, but a blank sample does not carry a customer's provisioned secrets or locked policy. TrustCUSTOM production units, blank ATECC608B parts and Trust&GO/TrustFLEX variants are not unconditional substitutes. Compare package, interface, electrical limits, provisioning state, certificate chain and host software before substitution. No unverified internal alternative link is provided.

Microchip's ATECC608B summary data sheet lists ATECC608B-TCSMS in the Trust Platform ordering table as the standard-industrial 8-pin SOIC TrustCUSTOM family. Its public summary supplies the package pinout and electrical limits, while the complete device data sheet is controlled. The TrustCUSTOM provisioning workflow and approved customer configuration determine the actual credential and slot policy.

Verify the complete TCSMS ordering and lot records, package marking, approved provisioning package, credential identity and lock state against the customer's Microchip documentation. A generic SOIC appearance or blank sample cannot establish the cryptographic identity of a production device.

Review the current Microchip ATECC608B summary and controlled full data sheet, TrustCUSTOM secure-exchange/provisioning records, and host-library integration guidance before design release. Family-level electrical or cryptographic capabilities do not prove that a specific lot exposes a given key, command or certificate.