Author Topic: CS for NHD-3.5-320240MF  (Read 2627 times)

jmcpherson

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CS for NHD-3.5-320240MF
« on: June 16, 2016, 10:47:18 AM »
We are evaluating the NHD-3.5-320240MF for a new product.  We want to use the 8-bit parallel mode, but we are confused on what to use for the Chip Select [CS] for the Display.  There is the Data Enable pin [DEN] but that is apparently a no connect.  What do we use so we know that the right data is on the bus at the right time?

James McPherson
Senior Electrical Design Engineer
Sandhill Scientific

Saurabh_B

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Re: CS for NHD-3.5-320240MF
« Reply #1 on: June 17, 2016, 08:02:08 AM »
Hi,

If you would like to use the NHD-3.5-320240MF display with 8-bit parallel, I would recommend using an external TFT controller such as the NHD-3.5-320240MF-20 Controller Board.

The display is defaulted to Sync mode so the data-enable signal would not be necessary. However you would need to provide a minimum of 16 bits for the color data along with the H-Sync and V-Sync signals.

The chip select signal will activate the bus so that you could write to the display.

jmcpherson

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Re: CS for NHD-3.5-320240MF
« Reply #2 on: June 17, 2016, 10:56:35 AM »
Thank you.  :)

jmcpherson

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Re: CS for NHD-3.5-320240MF
« Reply #3 on: June 17, 2016, 11:10:53 AM »
We can support 16 bit parallel, it was the 24bit that was the issue.

How do I connect the data lines to make 16bit work?

James

Saurabh_B

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Re: CS for NHD-3.5-320240MF
« Reply #4 on: June 21, 2016, 11:57:41 AM »
James,

THis will depend on your MPU.

You can find the pinouts for the controller board on the spec sheet for the controller. i have also linked a picture of that pinout below.
This controller will have an 8080 type interface with your MPU.


 

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