This document describes the features and applications of the 64-bit unique identifier (UID) used in STMicroelectronics contactless RFID applications.
This document describes the structure of the 64-bit Unique Identifier (UID) used in STMicroelectronics contactless memory products. The UID consists of four parts: the Tag registration category, Silicon manufacturer code, Product code, and Unique serial number. Understanding these fields allows applications to identify specific tag families and memory maps.
| UID Size | 64-bit |
|---|---|
| Unique ID Tags per Family | 2^42 (4,398,046,511,104) |
| Silicon Manufacturer Code Value | 0x02 |
| Tag Registration Category Value | 0xD0 |
The 64-bit UID is used to identify each contactless memory individually and to modify memory access models and maps depending on the recognized memory type.
An application can determine the product type by reading the tag UID value, which contains the product type value in the Product code field.