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AN4054 Datasheet(PDF) 4 Page - STMicroelectronics |
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AN4054 Datasheet(HTML) 4 Page - STMicroelectronics |
4 / 13 page Comparison between low-density and high-density devices AN4054 4/13 Doc ID 022825 Rev 3 1 Comparison between low-density and high-density devices This chapter highlights the differences of RF addressing modes between the ISO/IEC 15693 family products. 1.1 Overview The STMicroelectronics ISO/IEC 15693 family can be split as shown in Table 2. The M24LRx products can be accessed either by the I2C or the RF interface, and the LRix products can be addressed only by the RF interface. The M24LR64-R, M24LR64E-R, M24LR16E-R and LRiS64k devices have an extended memory and some RF commands shall be updated. Details are given in Chapter 1.4: Memory mapping of ISO/IEC 15693 products. 1.2 IC reference of ISO/IEC 15693 products The IC reference (IC ref) is a byte that identifies an STMicroelectronics product. Each product of the ISO/IEC 15693 family has its own and can be retrieved by issuing the GetSystemInfo RF command. Table 3 lists the different IC references of the ISO/IEC 15693 family products. 1.3 How to identify the ISO/IEC 15693 products There are two ways to identify the STMicroelectronics ISO/IEC 15693 products: ● Analyze the product code field of the UID. ● Analyze the IC reference value of the GetSystemInfo response. Table 2. Low-density and high-density devices Access type Low-density High-density RF and I2C access M24LR04E-R M24LR64-R M24LR64E-R M24LR16E-R RF access LRi1K LRiS64K LRi2K LRiS2K Table 3. IC references of the ISO/IEC 15693 family products LRi1K LRi2K LRiS2K LRiS64K M24LR04E-R M24LR16E-R M24LR64E-R M24LR64-R IC ref 0b010000xx 0b001000xx 0b001010xx 0x44 0x5A 0x4E 0x5E 0x2C |
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