Difference between 8 Bit Mode and 4 Bit Mode LCD Interfacing

Home Forums Microcontrollers Difference between 8 Bit Mode and 4 Bit Mode LCD Interfacing

This topic contains 1 reply, has 2 voices, and was last updated by  Ligo George 3 years, 8 months ago.

Viewing 2 posts - 1 through 2 (of 2 total)
  • Author
    Posts
  • #7378

    psypho12345
    Participant

    What is the Difference between 8 Bit Mode and 4 Bit Mode LCD Interfacing ?
    Which is preferred?

    #7396

    Ligo George
    Keymaster

    8 Bit mode and 4 bit mode differs in how data is send to LCD.
    In 8 Bit Mode, character data (8 bit ASCII) and LCD commands are send through data lines D0 – D7 of the LCD. Enable Pin (E) of the LCD is used to provide data strobe…
    But 4 Bit Mode uses only 4 data lines D4 – D7. In this the 8 bit data and commands are divided into two parts and sent sequentially through the 4 data lines.
    The idea of 4 bit mode is introduced to save pins of microcontroller (serial communication LCD saves more pins). 4 bit mode interfaced lcd will be a bit slower than 8 bit mode. But this speed difference is not significant as LCDs are slow speed devices.
    Due to these reasons 4 bit mode is commonly used…

Viewing 2 posts - 1 through 2 (of 2 total)

You must be logged in to reply to this topic.