Lcd display

here you can find the LCD DISPLAY pin description, characteristics, usage, and schematic diagram, source code. it is completely about 16x2 characteristic LCD.

1. https://technoelectronics44.blogspot.com/2020/08/16x2-lcd-
display.html
you can download source code
16X2 LCD DISPLAY
LCD-Liquid Crystal Display
Generally, these are small size displays, these are mainly useful in embedded products
such as Coin box, Digital Energy meters, calculators, etc. These are different sizes in
width like 16x1 LCD, 16x2 LCD, 16x4 LCD.
16x2 means 16- Rows and 2-columns, so it can print up to 32 characters. It has a
5x8 dot matrix to print a single character, so for a single character, it takes 5x8=40
pixels and for 32 characters it has 40x32=1280 pixels.

16x2 LCD Module

16x2 LCD - Pin diagram

2. Features
 Operating Voltage: 4.5v-5.5v
 Output maximum current: 5ma
 Total pins: 16
 Built-in controller (HD44780 or Equivalent)
 Back led color: Blue, Green, Yellow.
 Rows /column: 16x2
 Total characters: 16
 Alphanumeric LCD display
 It can operate in an 8-bit or 4-bit data mode.
 5x8 dot matrix for character representation
Pin configuration
1 Vss Ground
2 Vcc/Vdd 5v(Positive terminal)
3 VE Contrast (brightness adjustment)
4 RS Register Select (to select Data mode or command
mode)
5 R/W Read / Write Operation
6 EN Enable
7 D0 Data pin 0
8 D1 Data pin 1
9 D2 Data pin 2
10 D3 Data pin 3
11 D4 Data pin 4
12 D5 Data pin 5
13 D6 Data pin 6
14 D7 Data pin 7
15 A Anode (Backlight positive terminal)
16 K Cathode (Backlight negative terminal)
Power supply pins
 Vdd – is the power supply positive pin
 Vss – is the power supply negative pin
 A – Anode terminal (positive terminal of Back Light LED)
 K – Cathode terminal (Negative terminal of Back Light LED)
Contrast pin

3. Vee – to adjust the Backlight LED brightness
By adjusting the voltage across this pin brightness will be adjust.
Control pins
 RS – Register select, it is useful to select the command mode or data mode of
operation RS=0 for command mode, whereas RS=1 for data
mode.
 R/W – To perform the Read and write operation (Write Operation is an active
LOW signal)
 En –Enable pin, we can assign the instructions by triggering the Enable pin.
Data pins
D0-D8 = Usually it has 8-data pins. It supports two modes of operations.
 8-bit data mode
 4-bit data mode
You can select any one of the modes by using the commands, and there is no effect on
performance.
Commands
Sr. No Code Command description
1 0x01 Clear display screen
2 0x02 Return home
3 0x04 Decrement cursor (shift cursor to left)
4 0x06 Increment cursor (shift cursor to right)/Entry mode
5 0x05 Shift display right
6 0x07 Shift display left
7 0x08 Display off, cursor off
8 0x0A Display off, cursor on
9 0x0C Display on, cursor off
10 0x0E Display on, cursor on
11 0x0F Display on, cursor blinking
12 0x10 Shift cursor position to left by one character

4. 13 0x14 Shift cursor position to right by one character
14 0x18 Shift the entire display to the left
15 0x1C Shift the entire display to the right
16 0x80 Force cursor to the beginning ( 1st line)
17 0xC0 Force cursor to the beginning ( 2nd line)
18 0x38 2 lines and 5×7 matrix
19 0x28 1 Line and 5x7 matrix


HOW TO USE LCD?
HOW TO IMPLEMENT LCD PROGRAM?
Applications
 Digital Energy meters
 Telephone Coin boxes.
 Gaming devices
 Calculators
Alternative Displays
8x1 LCD, 8x2 LCD, 16x4 LCD, I2C 16x2 LCD Display

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