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FDC2212: Comparison to MSP430FR2522 Solution

Dajon McGill
Expert 6831 points
Part Number: FDC2212
Other Parts Discussed in Thread: MSP430FR2522,

Hey Team,

I have a customer that is designing a touch keypad with 12 capacitive touch buttons (no sliders or wheels). This touchpad will be in the presence of multiple RF sources and they have had false touch issues in the past with off the shelf touch sensors.

Is there a simpler drop-in solution over the MSP430FR2522 CapTouch MCU, for example? It is preferred to avoid any additional flashing/programming/firmware handling in their system.

Do we have anything that comes pre-flashed?

Best,
Dajon McGill

FR2522

  • 0
    TI__Expert 7599 points

    Hey Dajon,

    FDC2212 is meant for liquid level sensing applications and its a discrete AFE. For more information on a drop in replacement I would reach out to the MSP team that can guide you with a drop in replacements. I will transfer this to the MSP team. 

    If touch application needs immunity with RF sources and electric fields I would consider the Inductive touch solution that requires metal as a target. Here you can find more information on Inductive sensing solution. 

    https://e2e.ti.com/support/sensors/f/1023/t/295036  

  • 0 in reply to Arjun_Prakash
    TI__Guru 70456 points

    Hi Dajon,

    The MSP430FR2522 is an MCU that does require programming and will require an extra step in manufacturing.  One option would be to have it preprogrammed by a programming house at an additional cost.  The MSP and CapTIvate library have features for noise immunity such as sampling at multiple frequencies, programmable filtering and debounce settings.