4 bit mode & 8 bit Mode of LCD 16×2

The LCD 16×2 can work in two distinct modes, in the 4 bit mode &  8 bit mode.

4 bit Mode of LCD

In 4 bit mode we can send the 8-bit information in two half’s 4-bit (nibble) by 4-bit (nibble).

In 4 bit mode we send the information/data nibble by nibble, first upper nibble transmitted from (D4-D7) and after that lower nibble transmitted from (D0-D3). A nibble is a group of four bits and a byte is a group of 8 bits. This enables us to send 8 bit information/data.

4 bit mode & 8 bit Mode of LCD 16x2

8 bit Mode of LCD

In 8 bit mode we can send the 8-bit information in one stroke.

Probably you gotten it, Yes 8-bit mode is quicker and impeccable than 4-bit mode. Yet, the significant disadvantage is that it needs 8 information lines associated with the microcontroller. This will make us come up short on I/O pins on our MCU, so 4-bit mode is broadly utilized.

NOTE: No control pins are utilized to set these modes. It is simply the method for programming that change.

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