im2 pin shorted in NHD-2.4-240320AF-CSXP-CTP(ISSUE)

Nadheem A Hashim

• May 29, 2026 12:31
• Edited

Dear Newhaven Display Support Team,

We are currently integrating your 2.4" TFT display (Part Number: NHD-2.4-240320AF-CSXP-CTP) with an ESP32-C6 microcontroller using the 40-pin interface. We are repeat customers and have successfully used Newhaven displays in our previous projects, but we are encountering a critical hardware issue with this specific model.

The Issue:
We are attempting to configure the display for 4-wire SPI mode. According to the data sheet, the interface mode pins should be set as follows:

    IM0 = 0 (GND)

    IM1 = 1 (VDD)

    IM2 = 1 (VDD)

When we apply this configuration, we experience a dead short circuit. Upon troubleshooting, we discovered that the IM2 pin on the LCD itself is internally shorted to Ground.

This is not isolated to a single unit; we have tested multiple displays from our purchased batch, and every single one exhibits this exact same behavior (IM2 shorted to GND).

Could you please confirm if there is a document errata or a specific way we need to isolate/configure IM2 for SPI mode on this specific panel revision? We cannot proceed with our 4-wire SPI implementation until this is resolved.


below is data sheet link
https://newhavendisplay.com/content/specs/NHD-2.4-240320AF-CSXP-CTP.pdf

0

• Official comment

  

  Engineering Support

  Community moderator

  • May 29, 2026 21:46

  Hi Nadheem, 

  The NHD-2.4-240320AF-CSXP-CTP has recently gone through a revision change from Rev2A to Rev2B. This change added support for 4-wire SPI. It seems like you have received the Rev2A version which only supports 3-Wire SPI. This link will take you to the product transition guide where you can find details regarding the changes.

  https://newhavendisplay.com/content/docs/NHD-2.4-240320AF-CSXP_TransitionGuide.pdf 

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