SR4210PCB CryptoAuthentication Extension Board

The SR4210PCB CryptoAuthentication™ extension board is a PCB assembly that allows Datakey CryptoAuthentication memory tokens to be used with Microchip’s CryptoAuthentication SOIC XPRO Starter Kit (Microchip part number DM320109). Specifically, the SR4210PCB CryptoAuthentication extension board plugs into the 20-position extension port connectors, labeled EXT1, EXT2 and EXT3 on the Microchip ATSAMD21-XPRO development board (included in the starter kit).

Datakey CryptoAuthentication memory tokens (e.g. IAT4.5Kb, IAX4.5Kb, IAT10.5Kb and IAX10.5Kb) may be plugged directly into the SR4210PCB receptacle (J1). This right-angle board-edge receptacle is ideal for applications where it is desired to insert the token along the narrow side of an enclosure. A 10-pin header connector (J2) allows for the use of a Datakey SlimLine™ panel-mount receptacle. This gives maximum flexibility for locating the receptacle.

Custom firmware is available for the ATSAMD21-XPRO development board that demonstrates how the /LOFO line can be tied to an interrupt line and detect when a Datakey CryptoAuthentication token has been inserted or removed.

SR4210PCB CryptoAuthentication Extension Board
Part Number


Connects to

Microchip ATSAMD21 XPRO Extension Port




3.3 V or 5.0 V Supplied Through Extension Header

Panel-Mount Receptacles

Panel-mount SlimLine Receptacles via Header

Board-Mount Receptacle


Receptacle Operating Life

50,000 Insertion/Removal Cycles Min.

Operating Temperature

-18°C to +66°C

Storage Temperature

-18°C to +66°C

Memory Tokens Supported

All Datakey CryptoAuthentication Tokens

Included Accessories



RoHS Compliant, CE

Other Features

Downloadable Firmware for Token Detection

WARNING: California's Proposition 65

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