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Showing 111 results View by: Thread Post Sort by
  • PCA9555: PCA9555PW Listed as End of Life on Mouser but Active on TI Site

    Bill Hynd
    Bill Hynd
    TI Thinks Resolved
    Part Number: PCA9555 Other Parts Discussed in Thread: TCA9555 Why is the PCA9555PW listed as EOL on Mouser, but Active on the TI site? Is it really still Active? Thank you, Bill
    • over 1 year ago
    • Interface
    • Interface forum
  • EVMK2G: I2C_transfer fail , slave device PCA9555, device 0x20,Data Transfer failed with transfer status 259

    chuntian cai
    chuntian cai
    Part Number: EVMK2G #define I2C_EXP_INSTANCE 1 #define I2C_EXPIO_ADDR 0x20 /********************************************************************** ************************** Macros ************************************ ********************************…
    • over 1 year ago
    • Processors
    • Processors forum
  • PCA9555: How to config I/O port as input or out

    Jim Tsai
    Jim Tsai
    TI Thinks Resolved
    Part Number: PCA9555 Hi, I checked datasheet and found the device I/O port can be programmed as input or output port. Could you please help to check if I can follow below table to set I/O port? How to do that and what's the command? And please help…
    • over 1 year ago
    • Interface
    • Interface forum
  • PCA9555: what's the difference between PCA9555 and PCA9548A

    Anders Yang
    Anders Yang
    TI Thinks Resolved
    Part Number: PCA9555 Other Parts Discussed in Thread: PCA9548A Hi, what's the difference between PCA9555 and PCA9548A? I can't find the datasheet of PCA9548A from ti.com. Does PCA9548A cover all specs of PCA9555 and replace it? You can also contact…
    • over 3 years ago
    • Interface
    • Interface forum
  • Answered
  • TCA9555: Rolling over from PCA9555 to TCA9555

    Roy Hsu
    Roy Hsu
    Resolved
    Part Number: TCA9555 Other Parts Discussed in Thread: PCA9555 , Hi Team, Can you provide a rollover guide from a competitor PCA9555 to our TCA9555? Please cover both the hardware and software changes required. Thanks. Roy
    • Resolved
    • over 2 years ago
    • Interface
    • Interface forum
  • RE: TCA9535: PCA9555 IO Configuration issue in Output Mode

    Eric Schott1
    Eric Schott1
    Hi Gonugunta, Are you still experiencing the I/O pulse when writing to TCA9535's output register? If you were able to find a solution, we would like to document it here if possible. Regards, Eric
    • over 2 years ago
    • Interface
    • Interface forum
  • PCA9555: Specific Application Question

    Go Bravos
    Go Bravos
    TI Thinks Resolved
    Part Number: PCA9555 Other Parts Discussed in Thread: TCA9555 Team, We are planning to use the PCA9555 with Vcc=3.3v and 5V in the I/O lines. Are we going to have any issues with it? Thank you.
    • over 2 years ago
    • Interface
    • Interface forum
  • PCA9555: Output Inversion

    Julian Chen
    Julian Chen
    TI Thinks Resolved
    Part Number: PCA9555 Other Parts Discussed in Thread: TCA9555 Hi E2E, 1. Could you kindly let us know PCA9555 output can be inverted by hardware method? 2. Did we just only set reg 0x04 and 0x05 to inverted the output? Thnaks!
    • over 2 years ago
    • Interface
    • Interface forum
  • PCA9555: Is it output open drain?

    user4979899
    user4979899
    TI Thinks Resolved
    Part Number: PCA9555 Hi Sir, I plan to use PCA9555 as an smbus expander as an output signal to trigger high active, but I didn't have external pull up resistor in I/O pin, Is it suitable for PCA9555? Thanks
    • over 2 years ago
    • Interface
    • Interface forum
  • Answered
  • PCA9555: I2C not working

    Sahil
    Sahil
    Resolved
    Part Number: PCA9555 Other Parts Discussed in Thread: TCA9555 Hi, I am trying to establish communication with PCA9555 io-expander chip via I2C, I am receiving NAK and my controller stops communication as expected. I even changed the chip with assumption…
    • Resolved
    • over 3 years ago
    • Interface
    • Interface forum
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