Author Topic: NHD-7.0-800480EF-20 Pinout  (Read 2288 times)

Tim_Cole

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NHD-7.0-800480EF-20 Pinout
« on: December 16, 2014, 11:17:42 PM »
Greetings,
As I understand it, the user MPU interfaces with this controller as if it were an SSD-1963 controller. However, there are a few details that the NHD-7.0-800480EF-20 spec doesn't seem to cover.

1) Does the MPU see the SSD-1963 TE signal, or does the NHD-7.0-800480EF-20 handle tearing control?

2) B/L Enable: this is described as  "Power Supply." The two descriptions don't seem to match, but I do want to control the backlight. How should the pin be used? In particular, what current does the MPU pin have to source or sink?

3) DISP: An early reply to a customer indicated this pin (and the B/L Enable) can be left unconnected. However, can I use this pin to temporarily blank the display?

 Regards,
Tim Cole


Michael_L

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Re: NHD-7.0-800480EF-20 Pinout
« Reply #1 on: December 18, 2014, 09:21:49 AM »
The TE signal is not available to the user, and is already handled.  The B/L enable is listed as power supply, but you are correct; it is an MPU connection.  You may use this to turn OFF/ON the backlight.  It can be left unconnected because there is a pull-up resistor on the board.  The MPU should only need to sink less than 1mA.  The same goes for the DISP signal, except this is used for blanking the display as you have mentioned.

Tim_Cole

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Re: NHD-7.0-800480EF-20 Pinout
« Reply #2 on: December 18, 2014, 02:23:18 PM »
Thanks Micheal,

Newhaven's customer service is, as usual, excellent. It's always a pleasure doing business with you.

Cheers, Tim


Michael_L

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Re: NHD-7.0-800480EF-20 Pinout
« Reply #3 on: December 19, 2014, 11:53:06 AM »
You are very welcome, and thank you for your kind feedback!  :D

 

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