6 Memory Organization

The AT24CSW01X is internally organized as 16 pages of 8 bytes each. The AT24CSW02X is internally organized as 32 pages of 8 bytes each for the EEPROM Array. The device also contains a 32-byte Security register which is organized as four pages of eight bytes each. This register contains a factory programmed ensured unique 128-bit serial number in the lower 16 bytes. The upper 16 bytes are user-programmable and can (later) be permanently write protected (see Security Register).

The AT24CSW01X/AT24CSW02X also contains an 8-bit Write Protection register that controls which regions of the memory can be written to. Details about how to use this register can be found in Write Protection.