Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Most of the time, the 4 bit mode is used because almost every IDE now comes with a 4bit LCD interfacing library. So no one likes to use 8 bit mode to loose 4 precious IO pins!
A four bit bus is also a lot slower to get the data to the screen, than the 8 bit version. But is does save quite a few pins. For most of my projects pins are more important than speed.
A four bit bus is also a lot slower to get the data to the screen, than the 8 bit version. But is does save quite a few pins. For most of my projects pins are more important than speed.
The speed difference is only minimal, and not significant - LCD's are slow devices, and this swamps the tiny speed difference between 4 and 8 bit modes.
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