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Messages - sigitronic

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1
OLEDs / Re: NHD-0240CW-AR3 runs very hot with 5V supply
« on: April 16, 2015, 05:00:20 AM »
mea culpa!
Thanks

2
OLEDs / Re: NHD-0240CW-AR3 runs very hot with 5V supply
« on: April 15, 2015, 07:08:09 AM »
Hello Paul
Thanks for updating most of the datasheets.
In two of them, unfortunatly the error remains:
NHD‐0216CW‐AB3 and NHD‐0216CW‐AR3
(The top two most favorite colours of mankind)
regards, Matthias

3
OLEDs / Re: NHD-0240CW-AR3 runs very hot with 5V supply
« on: April 06, 2015, 10:54:25 AM »
Thanks a lot! Please change it also in the datasheet. (it may be of interest for others too.)
regards
Matthias

4
OLEDs / Lower Limit for SPI-Clock Cycle?
« on: March 27, 2015, 06:01:48 AM »
Hello
I'm working with a NHD-0216CW display in SPI mode and had some problems to bring it up and running in the last days. Finally, the problem was a mistake in the datasheet in the power-supply section, but before I found this issue, I tended to believe I made something wrong in the SPI-protocol. In cases like this, it's very helpful to have the possibility to go stepwise through the programcode and observe signals statically. In the datasheet I see a lower limit for the clock period of (20us) when using the SPI-interface mode. Is this a typo or is it a fact that the design of the SPI-interface is NOT statically? After everything worked, i dramatically slowered down the bus speed just to see if it still works and it did. (Of Course, it makes no sense to use the display with such a bus speed except for debugging. E.g. in the I2C- definition, there is no given lower limit for the Clock cycle)   

Regards
Matthias

5
Hello all
It tooks me several days to find a error in the NHD-0216CW datasheet! When the display is connected according  datasheet (Pin1 = Ground; Pin2 = no connection; Pin3 = 5V) my display runs hot as many of you described too. I impelemented the interface very accurate to meet all the specs of timing and pin configuration. No way to bring something onto the display, neither in Parallel  8-bit 6800 nor in SPI-mode.
After switching to the 2.8V configuration according datasheet, both configutations worked well.  (Pin1 = Ground; Pin2 = 3.3V; Pin3 = GND)  But I need a 5V display in my project an therefore I tried someting which is forbidden expelcitly by the datasheet:  (Pin1 = Ground; Pin2 = 5V; Pin3 = 5V) and now everytheing works fine! I still have a strange feeling to go into serial with this finding. Please confirm that this configuration is safe to use.

best regards
Matthias
 

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