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BQ76940: interfacing AFE with arduino and STM to make BMS

Naveen Kumar
Prodigy 10 points
Part Number: BQ76940

i want to know about BQ76940 AFE....is it possible to connect with arduino for BMS monitoring? .......is there any readymade AFE board available like BQ76940EVM for connect and code by arduino

  • 0
    TI__Mastermind 19760 points

    Hi Naveen,

    The bq76940 should be able to interface with an Arduino just like any other I2C peripheral. For ready-made boards, the only option we sell would be the bq76940EVM. We don't have a board designed specifically for an Arduino, but the EVM should support an external I2C connection.

    We don't have any pre-made code for the Arduino platform, so you will need to develop that yourself. I recommend referring to the MSP430 sample code (https://www.ti.com/lit/an/slva626b/slva626b.pdf).

    Regards,

    Max Verboncoeur

  • 0 in reply to Maxwell Verboncoeur
    Prodigy 10 points

    here am trying to make one circuit using TI BQ76940(as per datasheet connection) for communicate with arduino board.....i start it from scratch and also i have doubt about coding side also, how to boot this ic using arduino?...please share any reference ,if someone shared the related things how to code and read the complete things

  • 0 in reply to Naveen Kumar
    TI__Mastermind 19760 points

    Hi Naveen,

    You can boot the device by providing a high signal at the TS1 pin. I recommend referencing this application note for various ways of doing this: bq769x0 boot switch alternatives. The simplest would be to use a GPIO pin from the Arduino and a diode (Figure 1 of the app. note).

    For the software, we provide the sample code that I linked in my previous reply for customers to use as reference in their own software development.

    Regards,

    Max Verboncoeur