3.4 Hardware Identification System

All Xplained Pro extension boards come with an identification chip (ATSHA204A CryptoAuthentication™ chip) to uniquely identify the boards that are connected to the SAM R34 Xplained Pro. This chip contains information that identifies the extension with its name and some extra data. When an Xplained Pro extension is connected to the SAM R34 Xplained Pro, the information is read and sent to the Atmel Studio. The following table shows the data fields stored in the ID chip with example content.

Table 3-3. Xplained Pro ID Chip Content
Data FieldData TypeExample Content
ManufacturerASCII stringMicrochip'\0'
Product nameASCII stringSegment LCD1 Xplained Pro'\0'
Product revisionASCII string02'\0'
Product serial numberASCII string1774020200000010’\0’
Minimum voltage [mV]uint16_t3000
Maximum voltage [mV]uint16_t3600
Maximum current [mA]uint16_t30