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hello sir
Thanks for your valuable suggestions. I have modified the schematics like this
> I am not using the touch functions so i have not touched the Touch controller section.
> 3.3 V rail is protected with Zener diode
Hi,
> All the inputs of U28, are internally pulled up inside micro controller
> T_CS is the touch controllers chip select input (3.3V Level) so i have connected it through 74AHC
> LCD back light was always ON in that design, But i have modified it to controlled by MC
> I have already changed...
Yeah was exactly the same problem that you had mentioned, but I have resolved it earlier. Sorry to mark this thread as solved. And I have one more doubt, is it really required to give pullupa on my 74AHC541 output?
Arduino mega +ssd1963 Problem
Hi all.. I have designed a custom PCB with ATmega2560 for my project. Have a 4.3 inch tft on it
With SSD1963 controller (16bit data bus). All the data and control lines are translated to 3.3 logic
With 74ahc541 buffers. The connection from my PCB to display...
thanks for the replays,
Negative Negative
I have actually used HC541 not HCT. Sorry for the mistake whenever I give the input to the buffer from a 5V ATMEGA port, the output goes beyond (4.1V the HCT's VCC( 3.3V ) and the 3.3V power rail raised by 4.1V.
Shall we use 74HCT541 to translate from a 5V logic to 3.3 logic? I mean from a 5V processor lines to a 3.3V display lines?
I have tried this, but a 3.3V powered HCT 541 gives wrong output (4.1 V) and disturbing the 3.3V supply rail. :roll:
here's my schematic
Hi Klaus. It is a nice explanation :).
This I have made to show you that I can write the locations beyond the calculated memory. So I have started the address pointer from 65500
can you please guide me to implement the correct method to resolve my issue?
these are the things I need to
1...
Hello Klaus,
Thank you very much for your concern. I am using Arduino Studio to compile my code. can you please give an example to write the entire memory?
in my understanding, the wrap around is, the maximum address before the memory over-write its first location. am I correct?
can you...
Hi Klaus,
Sorry for the late replays. I have tried as you suggested but have a look on the screen attached to this post. I have tried with a 512Kbit eeprom, hence the maximum addressable location will be (512 x1024)/8 = 65536 bytes, Is It?. But you can see in the screen that it has already...
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