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  • RE: PCF8575: what is reading slave address

    Resolved
    The difference between the PCF8575 and the PCF8575C is that the latter does not have internal pull-ups, i.e., an 1 output would float and might drift down to read as low.
    • Answered

  • RE: PCF8575: PCF8575

    Resolved
    PCF8575C are vailable with many vendors. By adding PullUp resistors on I/O with PCF8575C will resolve my issue. or any other change is required ? Beacause my current design has provision for I/O pullups.
    • Answered

  • PCA9535: Difference between parts

    Resolved
    Part Number: PCA9535 Other Parts Discussed in Thread: TCA9535 , TCA9555 , PCF8575 , PCF8575C , PCA9555 , , TCA9539 , TCA9539-Q1 Hello, I had a look at different I2C to GPIO devices and came across those parts TCA9535, P CA953, TCA9555, P CA9555, PCF8575C and PCF8575…
    • Resolved

  • PCF8575C

    What I need from TI regarding the PCF8575C is the following: 1. byte/word command set AND required command sequence that the chip wants to see in order to set/clear bits which are set as outputs 2. byte/word command set AND required command sequence that…

  • PCF8575C Usage Question

    Other Parts Discussed in Thread: PCF8575C , TCA9535 , TCA9555 Posting for a customer: What I need from TI regarding the PCF8575C is the following: 1. byte/word command set AND required command sequence that the chip wants to see in order to set/clear bits…

  • RE: PCF8575: PFC8575

    Hey John, The scopeshot image on the I2C lines are bit too condensed for me to read but... I have a sneaking suspicion I know what may be happening. Could you read off (or take a picture) of the top markings on the device. I suspect, you may have the…
    • Answered

  • RE: SN74CBTLV16212: Computing Power consumption

    Resolved
    Hi Dodson, Supply voltage is 3.3V. Control Signal are coming via SN74LVC1G04 (operating @ 3.3V) , generated at PCF8575C (operating @ 3.3V) . Regards, Bilal
    • Answered

  • I2C routine inside an UART interrupt

    Resolved
    Other Parts Discussed in Thread: PCF8575C , TM4C123GH6PZ , PCF8575 Hello, I try implement a I2C routine inside an uart interrupt. In the main program the microcontroller (TM4C123GH6PZ) wait to a interrupt by UART. In this ISR, the data are identi and call…
    • Resolved

  • PCF8575 problem with output drive

    TI Thinks Resolved
    Other Parts Discussed in Thread: PCF8575 , PCF8575C Good morning I have a problem driving output of PCF8575 . I have all output disconnected (they are floating) now on I2C I only send this command START I2C 0x40 --- write at address 0x40 ------> ACK…

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