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DS280BR810: EEPROM memory size

Part Number: DS280BR810

Dear Support team,

Data sheet P.17 states "Maximum EEPROM size is 8 kb (1024 x 8-bit)."
In recent years, smaller memory size EEPROMs have been difficult to obtain.
I am considering using an EEPROM that exceeds the capacity (e.g., 128kb or 256kb parts). Are there any problems with the use?

According to Figure 5 in datasheet, there is a description of " 8-bit SMBus address: 0xA0 ".
7bit_address [1010000] + Read/write select [0] = [10100000] = 0xA0 at 8bit
Is it correct?

Best Regards,
Hirokazu Takahashi

  • Hi,

    256kb EEPROM may be used. Refer to the EEPROM application note per the link below for further guidance.

    https://www.ti.com/lit/an/snla244/snla244.pdf

    See below guide table showing 7-bit version vs 8-bit version of SMBus slave address

    ADDR_3

    ADDR_2

    ADDR_1

    ADDR_0

    SMBus WRITE ADDRESS

    SEVEN-BIT SMBus ADDRESS

    0

    0

    0

    0

    0x30

    0x18

    0

    0

    0

    1

    0x32

    0x19

    0

    0

    1

    0

    0x34

    0x1a

    0

    0

    1

    1

    0x36

    0x1b

    0

    1

    0

    0

    0x38

    0x1c

    0

    1

    0

    1

    0x3a

    0x1d

    0

    1

    1

    0

    0x3c

    0x1e

    0

    1

    1

    1

    0x3e

    0x1f

    1

    0

    0

    0

    0x40

    0x20

    1

    0

    0

    1

    0x42

    0x21

    1

    0

    1

    0

    0x44

    0x22

    1

    0

    1

    1

    0x46

    0x23

    1

    1

    0

    0

    0x48

    0x24

    ADDR_3

    ADDR_2

    ADDR_1

    ADDR_0

    SMBus WRITE ADDRESS

    SEVEN-BIT SMBus ADDRESS

    1

    1

    0

    1

    0x4a

    0x25

    1

    1

    1

    0

    0x4c

    0x26

    1

    1

    1

    1

    0x4e

    0x27

    Thanks,

    Rodrigo Natal