I am interested in using this eeprom for a project. I have used used I2C devices before and usually the datasheet gave the embedded address somewhere. For the life of me I can't seem to find it on their datasheet.

Anyone want to show me where the heck it is? I feel quite silly as I even tried CTRL+F to find keywords on the datasheet.


  • \$\begingroup\$ See "Device Addressing" on page 4. a8 to a10 select one of 8 256-byte pages in the device. See figure 6 p.6 for the rest of the story \$\endgroup\$
    – user16324
    Dec 28, 2020 at 20:21

1 Answer 1


That EEPROM has a size of 2048 bytes, which requires 11 bits to address. The datasheet states:

Device addressing

Thus, it says the four most significant bits of the device/slave address byte are "1010", and the next 3 bits are the 3 most significant bits of the memory address to be accessed, with the 8 least significant bits of the memory address to access in the next byte, as clarified here:

Addressing sequence

So, for example, if you want to access memory address 1365, 10101010101 in binary, the slave address byte would be 1010101X and the address byte would be 01010101. (Where X is the read/write bit).

  • \$\begingroup\$ Ah that makes sense now. Didn't realize the address is for each memory address. Thanks! \$\endgroup\$
    – joe
    Dec 28, 2020 at 20:43

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