Answered

• TCA9555: I2C Waveshape

  

  David Lane

  Resolved

  Part Number: TCA9555 Tool/software: I am referencing the earlier thread as this is the same application. There are a number of photos in the previous thread. I'll repeat one here. In this application the TCA9555 interfaces to Microcontroller TM4C1292NCPDTI3…

  • Resolved

  • over 1 year ago
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Answered

• TCA9555: SDA two steps

  

  Allan Fan

  Resolved

  Part Number: TCA9555 Tool/software: Hi experts, Customer used TCA9555 and saw SDA has two steps although all the timing spec seems ok and meet DS spec. Would you please clarify is there any concern or what might goes wrong? Regards, Allan

  • Resolved

  • over 1 year ago
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• TCA9555: TCA9555 At power On Pin as a Input.

  

  Jithin potu

  TI Thinks Resolved

  Part Number: TCA9555 Other Parts Discussed in Thread: TCA9535 Dear Sir, I used TCA9555 Io Expander IC. At power on condition all pin as a input work but voltage available in IO pin? as per schematic Io port pull-up 100kohms though VCC.

  • over 1 year ago
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• TCA9555: Debouncing

  

  Tyrique Townsend

  TI Thinks Resolved

  Part Number: TCA9555 Other Parts Discussed in Thread: TCA8418E Tool/software: I was notified by TI support that " TCA9555 does not have automatic debouncing built in. If debounce is needed, an external cap would be needed." - Is there a drop-in replacement…

  • over 1 year ago
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Answered

• TCA9555: Button Debouncing

  

  Tyrique Townsend

  Resolved

  Part Number: TCA9555 Tool/software: Does the TCA9555 have automatic button debouncing built in? If it does, then is that true for both polled and interrupt?

  • Resolved

  • over 1 year ago
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• TCA9555: TCA9555DBR - alternate part with IO latch

  

  Kanava sait Abdul Kathar

  TI Thinks Resolved

  Part Number: TCA9555 Tool/software: It seems TCA9555DBR part doesn't have IO latch, can you pls suggest alternate with IO latch (Pin & foot print compatible with TCA9555DBR )

  • 9 months ago
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Answered

• TCA9555: PCA9555 and TCA9555

  

  Len Hsu2

  Resolved

  Part Number: TCA9555 Other Parts Discussed in Thread: PCA9555 , Hi team, I have customer design in TCA9555 and PCA9555 at same design. Here is their block. And they found out if they turn the switch to low, point B will be 1.6V. And the issue…

  • Resolved

  • over 2 years ago
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• TCA9555: Pull-up resistors by default?

  

  D3j4nHr01

  TI Thinks Resolved

  Part Number: TCA9555 Other Parts Discussed in Thread: TCA9535 Tool/software: Hello, I just would like to ask for clarification - when the ports of TCA9555 are configured as inputs, pull-up resistors on those pins are enabled by default, am I right?…

  • over 1 year ago
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• TCA9555: address and register issue

  

  Adam Lawrence

  Answer Suggested

  Part Number: TCA9555 Other Parts Discussed in Thread: TCA6424 Tool/software: We installed a TCA9555PWR onto the TI I/O expander EVM and are observing some strange results which we cannot understand. 1) With the TCA9555 installed on the EVM, all three…

  • over 1 year ago
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• TCA9555: UL and SGS certification

  

  Zoey Wu

  Part Number: TCA9555 Tool/software: hi team, has TCA9555 already pass the UL or SGS certification? if no, do we have plan to do this? thansk!

  • over 1 year ago
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