Draw interfacing of 16 × 2 LCD with 8051 and state the function of EN and RS of LCD

Draw interfacing of 16 × 2 LCD with 8051 and state the function of EN and RS of LCD
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1 Answer

Answer :

Diagram:

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RS: RS is the register select pin. We need to set it to 1, if we are sending some data to be displayed on LCD. And we will set it to 0 if we are sending some command instructions during the initializing sequence like clear the screen etc. 

EN: The enable pin is used by the LCD to latch information presented to its data pins. When data is supplied to the data pins, a high-to-low pulse must be applied to this pin in order for the LCD to latch in the data present at the data pins. This pulse must be a minimum of 450ns wide.

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