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M24LR64-RMB6T2 数据表(PDF) 19 Page - STMicroelectronics |
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M24LR64-RMB6T2 数据表(HTML) 19 Page - STMicroelectronics |
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19 / 128 page  M24LR64-R User memory organization Doc ID 15170 Rev 10 19/128 Figure 7. Memory sector organization Sector details The M24LR64-R user memory is divided into 64 sectors. Each sector contains 1024 bits. The protection scheme is described in Section 4: System memory area. In RF mode, a sector provides 32 blocks of 32 bits. Each read and write access are done by block. Read and write block accesses are controlled by a Sector Security Status byte that defines the access rights to all the 32 blocks contained in the sector. If the sector is not protected, a Write command updates the complete 32 bits of the selected block. In I2C mode, a sector provides 128 bytes that can be individually accessed in read and write modes. When protected by the corresponding I2C_Write_Lock bit, the entire sector is write- protected. To access the user memory, the device select code used for any I2C command must have the E2 Chip Enable address at 0. 0 1 Kbit EEPROM sector 5 bits 1 1 Kbit EEPROM sector 5 bits 2 1 Kbit EEPROM sector 5 bits 3 1 Kbit EEPROM sector 5 bits 60 1 Kbit EEPROM sector 5 bits 61 1 Kbit EEPROM sector 5 bits 62 1 Kbit EEPROM sector 5 bits 63 1 Kbit EEPROM sector 5 bits I2C Password System RF Password 1 System RF Password 2 System RF Password 3 System 8 bit DSFID System 8 bit AFI System 64 bit UID System Sector Area Sector security status ai15124 |
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