16x2 LCD with 16F877A

In this exercise lets look at how can we interface a LCD display with 16F877A PIC microcontroller.

The mikroC PRO for PIC provides a library for communication with LCDs (with HD44780 compliant controllers) through the 4-bit interface.

HD44780 Pinout

1. Vss (Ground)
2. VCC (5V)
3. Contrast (use a potentiometer for variable contrast, or just connect to GND)
4. Register Select (RS), 0 = command write, 1 = data write
5. Read/Write (R/W), 0 = write to display, 1 = read from display
6. Enable (EN) - used to clock in data
7. DB0 (not used in 4-bit mode) - LSb
8. DB1 (not used in 4-bit mode)
9. DB2 (not used in 4-bit mode)
10. DB3 (not used in 4-bit mode)
11. DB4 - LSb in 4-bit mode
12. DB5
13. DB6
14. DB7 - MSb
15. Backlight + (5V)
16. Backlight - (GND)

4-bit and 8-bit modes

An HD44780 LCD can be operated in two different modes: 4-bit mode and 8-bit mode. In 8-bit mode, pins 7-14 of the LCD are connected to eight I/O pins on the microcontroller; while in 4-bit mode, pins 11-14 on the LCD are connected to four I/O pins on the microcontroller. The advantage to operating in 8-bit mode is that the programming is a bit simpler and data can be updated more quickly. The obvious reason to operate in 4-bit mode is to save four I/O pins on the PIC microcontroller.

Circuit Diagram for 16x2 LCD



Complete Circuit Diagram with PIC Microcontroller







Download MikroC Code & PROTUES Design: Click Here

@ hashanch
good efforts
is the mikro c version is cracked or trial

Its cracked one if you want get it from here.

http://www.8051projects.net/forum-t49986.html

thank you hashanch