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数据搜索系统，热门电子元器件搜索 |
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M24LR64-R_1006 数据表(PDF) 18 Page - STMicroelectronics |
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M24LR64-R_1006 数据表(HTML) 18 Page - STMicroelectronics |
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18 / 128 page  User memory organization M24LR64-R 18/128 Doc ID 15170 Rev 10 3 User memory organization The M24LR64-R is divided into 64 sectors of 32 blocks of 32 bits as shown in Table 5. Figure 7 shows the memory sector organization. Each sector can be individually read- and/or write-protected using a specific password command. Read and write operations are possible if the addressed data are not in a protected sector. The M24LR64-R also has a 64-bit block that is used to store the 64-bit unique identifier (UID). The UID is compliant with the ISO 15963 description, and its value is used during the anticollision sequence (Inventory). This block is not accessible by the user and its value is written by ST on the production line. The M24LR64-R includes an AFI register that stores the application family identifier, and a DSFID register that stores the data storage family identifier used in the anticollision algorithm. The M24LR64-R has four additional 32-bit blocks that store an I2C password plus three RF password codes. Figure 6. Block diagram EEPROM Latch Logic RF I2C RF VCC Contact VCC SCL SDA VSS VCC AC0 AC1 Power management ai15123 |
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