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Messages - Michael_L

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OLEDs / Re: NHD-2.8-25664UCY2 PCB revisions?
« on: April 22, 2014, 10:28:37 AM »
Thank you for your feedback.  Are you currently using the display?  Are you experiencing any issues?  The display can be configured different ways, and the way we have designed it not only works for our testing purposes, but also for many of our customers.  If you would like to share any suggestions or design alternatives with us, please feel free to email us at

TFTs / Re: NHD-4.3-480800EF-CTXP# driver question
« on: April 21, 2014, 03:59:12 PM »
You are very welcome.  Yes you are correct, each pixel is addressable.  This display is a new product, and also currently the only display we offer with IPS technology.  We have every intention to keep it in production for at least a few years.

OLEDs / Re: NHD-2.8-25664UCY2 PCB revisions?
« on: April 21, 2014, 03:52:24 PM »
Can I ask how you derived this information?  There has not been a revision made as there are currently no problems with the current VER1.1.
All signals are connected appropriately, making a complete and fully functional OLED module.

OLEDs / Re: NHD-0216KZW-AG5 Font Tables in 4-bit Mode
« on: April 21, 2014, 03:43:14 PM »
Can you send the part of your code that is changing the font table?

OLEDs / Re: NHD-0216SZW-BG5 compatibility?
« on: April 18, 2014, 08:30:52 AM »
You can compensate for the timing differences by adding some delays after your writes, but more importantly, start with the commands that have the longest execution time (such as the clear display command).  If you're lucky, this might be the only timing difference you need to account for.  It all depends on how fast your system is writing to the display.  To view the execution times of the OLEDs commands, refer to our datasheet for the display.  You may compare those times with that of the LCD by looking at the LCD controller's datasheet here: (see page 17)
Also, refer to the timing characteristics on page 33 of the above ST7066U datasheet, compared with page 11 of the OLED's datasheet.  You will notice the commands between the 2 are are just about identical, but the timing is not.

TFTs / Re: NHD-4.3-480800EF-CTXP# driver question
« on: April 17, 2014, 03:43:39 PM »
The HX8369 is essentially a controller.  It is a single chip TFT driver with GRAM, and has a command set similar to that of a controller.  (Notice in the datasheet the C in the part number is representative of a built-in controller)  Have you looked at the HX8369 datasheet?  There is a link to it in our datasheet for the display on page 5, or here:
This document has the information you are looking for (specifically page 151, and in more detail on pages 181 & 182).

OLEDs / Re: NHD-0216SZW-BG5 compatibility?
« on: April 16, 2014, 10:52:43 AM »
The first thing that comes to mind for me is the timing.  The OLED has slightly different timing than the LCD (this can be seen in the datasheets for the displays, specifically the command tables).  One main difference is the clear display command.  With the OLED, you need a minimum of 2ms delay after executing this command.  The other commands have slightly higher execution times as well, so these would also need to be accounted for if the requirements are not being met.

Also, can you make sure pin 3 is left as a no connect?  The same goes for pins 15&16.  You should not need to change any jumpers, as the OLED comes default as 6800 mode like the LCD.

Character LCDs / Re: NHD-0220GZ-FSW-GBW-L
« on: April 10, 2014, 04:58:06 PM »
A couple of differences I noticed:

Our example code is using a different port for read/write, whereas your code is using the same port for all signals.

There is a mismatch in your line:  "DEFINE LCD_EBIT 6     ' PORTC.5 pin for LCD's E line"


Yes, you may use non polarized caps there.

Evaluation Tools / Re: NHDev board interface?
« on: April 09, 2014, 10:15:50 AM »
The brightness for the OLED is adjustable through software via the Set Brightness command on the SSD1305 controller, and is therefore not adjustable on the NHDev board.

Evaluation Tools / Re: NHDev board interface?
« on: April 08, 2014, 03:45:21 PM »
The NHDev board uses the 8-bit parallel interface in 6800 mode.  It is not possible to change this.
We do not have a diagram showing the connections between the display and NHDev board, however, the NHDev board's pins (seen on page 6 of the user guide, here: match the names of the pins on the OLED.  (D/C on the OLED is the same as RS on the NHDev board)  As for the BS2 and BS1 pins on the OLED, BS2 should be tied HIGH and BS1 should be tied LOW.

Character LCDs / Re: NHD-0108FZ-RN-YBW Newbie help?
« on: April 07, 2014, 02:34:15 PM »
I believe I spoke with you over the phone a few moments ago regarding this.  Just to reiterate, the controllers between the two are not a 100% match, and some changes need to be made in your software to get our display to work.  Please refer to the example code towards the end of the datasheet for the display to get you started, as that code will work for our display.

Character LCDs / Re: NHD-0216K3Z-FL-GBW-V3 losing/dropping characters
« on: April 07, 2014, 08:57:01 AM »
We are seeing some of our customers having this problem, and is usually "fixed" by lowering the I2C bus speed to ~60KHz or less.  This is an issue with the current firmware on the display and not the display's components themselves.  We are currently working on a firmware revision to correct this timing issue, and we greatly apologize for any inconveniences caused.

We unfortunately do not currently offer any transflective type TFT displays.  Is there a certain brightness rating you are trying to meet for your application?  We may be able to supply a custom TFT with a higher brightness, but it will still be a transmissive type.

Graphic LCDs / Re: NHD_12232KZ_mega.ino with arduino mega
« on: April 04, 2014, 07:56:08 AM »
I used an external function generator for the clock signal.

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