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Hitachi HD44780 LCD controller

Started by GaryDyksman, Feb 17 2014 09:43 AM

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#1 GaryDyksman

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Posted 17 February 2014 - 09:43 AM

Hi guys, I am going to build a breakout board for my 20x4 LCD screen, and I was wondering if there is any advantages over using 4bit or 8bit mode. I have always used 8bit mode. I would think that 8bit mode is faster as you transferring 8bit instead of 4.

#2 hanzibal

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Posted 24 February 2014 - 02:32 PM

Yes, 8 bit mode would be faster - in 4 bit mode, you have to transfer the low and high nibble of each byte separately while as in 8 bit mode, you transfer a whole byte in each transaction. Will you be using a separate device (shift reg or similar) in between the Netduino the LCD and if so, may I ask which?