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Ken Inoue
Visitor II
November 28, 2017
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What is the device address of the M24LR64 - R?

  • November 28, 2017
  • 1 reply
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Posted on November 28, 2017 at 07:05

What is the device address of the M24LR64 - R? I am studying I2C using X-NUCLEO-NFC 02 A 1. X-NUCLEO-NFC02A1 has EEPROM (M24LR64-R). However, I do not know the device address of the M24LR64 - R. Even if I looked at the data sheet, I could not understand where it is written because of beginners. I am happy if you give me a hint.

Best Regards,

Ken Inoue

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    Best answer by AvaTar
    Posted on November 28, 2017 at 09:10

    Does the X-NUCLEO-NFC02A1 user manual say something about it ?

    Checking the M24LR64-R datasheet,it says:

    The device select code consists of a 4-bit device type identifier, and a 3-bit Chip Enable “Address� (E2, E1, E0). To address the memory array, the 4-bit device type identifier is 1010b.

    Address bits E1 and E0 are defined by external pins, so check the schematics.

    E2 depends on the memory range you want to access.

    1 reply

    A
    AvaTarAnswer
    Visitor II
    November 28, 2017
    Posted on November 28, 2017 at 09:10

    Does the X-NUCLEO-NFC02A1 user manual say something about it ?

    Checking the M24LR64-R datasheet,it says:

    The device select code consists of a 4-bit device type identifier, and a 3-bit Chip Enable “Address� (E2, E1, E0). To address the memory array, the 4-bit device type identifier is 1010b.

    Address bits E1 and E0 are defined by external pins, so check the schematics.

    E2 depends on the memory range you want to access.

    K
    Ken InoueAuthor
    Visitor II
    November 30, 2017
    Posted on November 30, 2017 at 09:21

    Dear Mr./Ms. AvaTar

    Thanks to you I understood.

    Thanks.

    Best Regards,

    Ken Inoue

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