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  • TCAL6416R: TCAL6416R : Device Driver for the i2c expander

    TI Thinks Resolved
    Part Number: TCAL6416R Other Parts Discussed in Thread: PCA9535 , TCA9539 , TCAL6416 , PCA9539 Tool/software: HI , We are using TCAL6416RTWR in imx93 board . Currently using linux 6.6.23. we are looking i2c expander Driver for the above part number…

  • TCAL6416R: Sticky Outputs

    TI Thinks Resolved
    Part Number: TCAL6416R Other Parts Discussed in Thread: TCA6416A , , TCAL9538 , TCAL6416 , TCA9538 , PCA9538 Tool/software: Hi expert, We are using this GPIO expander in our current design from TI: TCAL6416RDTOR. We noticed that this expander is quite…
    • Answered

  • TCAL6416R: IO States while in Reset

    Resolved
    Part Number: TCAL6416R Tool/software: The datasheet indicates that the registers are sticky for this part. I'm curious what this means for the IO states if the device is in reset. Consider the following sequence: When the device is first powered on…
    • Resolved
    • Answered

  • TCAL6416R: No packaging information on the datasheet

    Resolved
    Part Number: TCAL6416R Tool/software: Hi team, There are no packaging information of TCAL6416RDTOR on the datasheet. Do you have the information? Best regards, Shunsuke Yamamoto
    • Resolved
    • Answered

  • TCAL6416R: I2C communication with two expanders and other devices on the bus, VCCP unpowered for driving ADDR input

    Resolved
    Part Number: TCAL6416R Tool/software: Hi Team, I have a question about TCAL6416RTWR expander. We would like to use two these ICs in one system, each one with a different I2C address (set by the ADDR pin). The VCCI will be powered from 3.3V and VCCP…
    • Resolved
    • Answered

  • TCAL6416R: No ACK signal when VCC is 1.8V and VCCP is 3.3V

    Resolved
    Part Number: TCAL6416R Tool/software: Hi, I have a problem accessing the device when VCC is 1.8V and VCCP is 3.3V. See the schematic below: When VDD_IO is 3.3V there is no problem, When VDD_IO is 1.8V there is no ACK from the device. Any ideas…
    • Resolved

  • TCA9554: I2C GPIO with flash memory

    TI Thinks Resolved
    Part Number: TCA9554 Other Parts Discussed in Thread: TCAL6416R Tool/software: Hi, I have found this link which provides an overview of I2C GPIO. https://www.ti.com/interface/i2c/general-purpose-ios-gpios/overview.html I am looking for I2C GPIO…
    • Answered

  • TCAL6408: IO config

    Resolved
    Part Number: TCAL6408 Other Parts Discussed in Thread: TCAL6416 , TCAL6416R , TCAL9539 , TCAL9539R , TCAL9538 , TCAL9539-Q1 Tool/software: Hi, Is there an I/O expander IC like the TCAL6408 where the I/O pins are open-drain (the internal MOSFET only…
    • Resolved

  • RE: TCA9555: TCA9555DBR - alternate part with IO latch

    Hi Kanava, TCA9555 can set I/O's to OUTPUT's and hold for a specified current: IOL = 25mA, IOH = 10mA, Abs max IOH/IOL = 50 mA. If you are referring to input latch, this device does not have latchable inputs. Please see any TCAL device. The TCAL…
    • Answered

  • RE: TCA4307: I2C Bus Hang Issue Due to Clock Stretching When Adding Multiple Slaves

    Resolved
    Hi Dhruvit, I am not familiar with the STM32G030 so I wouldn't have much advice to offer on that side. As Clemens suggested, it seems like a firmware issue with the STM device. If it is not too much to add external /RESET connection to each STM when…

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