Connecting the NHD-0420-CW Display to the Evalboard

LuikardP

• September 20, 2018 08:46

Hallo Everybody,
i'm trying to connect a NHD-0420-CW Display via I2C to the evalboard NHDev. I connect the the Pins according to the datasheets. See the table below.
Display            Evalboard
1        VSS            1
2        VDD           2
3       REGVdd       37   tied to GND
4       SA0             5
5-6    tied to GND
7       SCL             30
8 and 9 SDA         38
10-15 tied to GND
16     /RES           11
17     BS0  tied to GND
18     BS1  tied to VDD
19     BS2 tied to GND
20    VSS             38
The evalboard starts. I'm able to select the correct Display type but the Display stays black. Is it possilbe to opperate the Display with the Evalboard over I2C? And when where is the error in this assambly?
Thank you for your help
Philipp

0

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  Sergio_M

  • October 11, 2018 08:11

  Hello,
  
  Unfortunately, the NHDev board does not support I2C interface, you can test in parallel mode to see how the display looks.

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