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SR176 bảng dữ liệu(PDF) 19 Page - STMicroelectronics |
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SR176 bảng dữ liệu(HTML) 19 Page - STMicroelectronics |
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19 / 35 page ![]() SR176 Device operations (instructions) 19/35 Figure 26. READ_BLOCK frame exchange between Reader and SR176 Figure 27. 64-bit UID storage format Unique Identifier (UID) Members of the SR176 family are uniquely identified by a 64-bit Unique Identifier (UID). This is used for addressing each SR176 device uniquely after the anticollision loop. The UID complies with ISO/IEC 15963 and ISO/IEC 7816-6. It is a read-only code, and comprises (as summarized in Figure 28): ● an 8-bit prefix, with the most significant bits set to D0h ● an 8-bit IC Manufacturer code (ISO/IEC 7816-6/AM1) set to 02h (for STMicroelectronics) ● a 6-bit IC code set to 00 0010b = 2d for SR176 ● a 42-bit Unique Serial Number Figure 28. 64-bit unique identifier of the SR176 SOF DATAL AI07707B DATAH Reader SR176 CRCL CRCH EOF SOF 08h CRCL CRCH EOF ADDR t0 t1 b15 UID2 b0 b15 UID1 b0 b15 UID0 b0 AI07708B b63 b0 UID3 b0 b15 AI14078 D0h Unique Serial Number 02h 63 55 47 0 Most significant bits Least significant bits 41 2d |
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