5.1 Unique Device ID (UDID)

All dsPIC33CK256MC006 family devices are individually encoded during final manufacturing with a Unique Device Identifier or UDID. The UDID cannot be erased by a Bulk Erase command or any other user-accessible means. This feature allows for manufacturing traceability of Microchip Technology devices in applications where this is a requirement.

It may also be used by the application manufacturer for any number of things that may require unique identification, such as:

• Tracking the device
• Unique serial number
• Unique security key

The UDID comprises five 24-bit program words. When taken together, these fields form a unique 120-bit -identifier. The UDID is stored in five read-only locations in the device configuration space. Table 5-3 lists the addresses of the Identifier Words and shows their contents.