Next LCD mini click

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  • MIKROE-2453
  • Next LCD mini click
LCD mini click  displays 2x16 monochrome characters on an LMB162XFW LCD display. It...more
Product information "Next LCD mini click"

LCD mini click displays 2x16 monochrome characters on an LMB162XFW LCD display. It features the MCP23S17 port expander and the MCP4161 digital potentiometer, both from Microchip. LCD mini click is designed to run on either 3.3V or 5V power supply. It communicates with the target microcontroller over SPI interface and the following pins on the mikroBUS™ line: PWM, INT, RST, AN.

LCD and backlight control

The PWM pin onboard the LCD mini click is used for backlight control. While the digital potentiometer is used for contrast adjustments.

2x16 LCD display features

2x16 LDC displays are ideal for displaying short messages and numbers. They can display 16 characters per one line, 32 in total. The 5x8 dot font displays characters, symbols, and numbers clearly and vividly.


Type LCD
Applications Interfacing 2x16 LED displays with mikroBUS™ compatible development boards
On-board modules MCP23S17 port expander, MCP4161 digital potentiometer - both from Microchip
Key Features Adapter for connecting 2x16 LCD displays, MCP23S17 port expander, MCP4161 digital potentiometer
Key Benefits Onboard port expander for LCD control, digital potentiometer for contrast settings, PWM for backlight control.
Interface SPI,PWM,GPIO
Input Voltage 3.3V or 5V
Compatibility mikroBUS
Click board size S (28.6 x 25.4 mm)

Pinout diagram

This table shows how the pinout on LCD mini click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

NotesPinMikrobus logo.pngPinNotes
Digipot CS CS2 1 AN PWM 16 PWM Pulse-Width Modulation
Reset for the port expander RST 2 RST INT 15 INT INT from the port expander
SPI chip select CS 3 CS RX 14 NC  
SPI clock SCK 4 SCK TX 13 NC  
SPI Master Input Slave Output MISO 5 MISO SDA 12 NC  
SPI Master Output Slave Input MOSI 6 MOSI SDA 11 NC  
Power supply +3.3V 7 3.3V 5V 10 +5V Power supply
Ground GND 8 GND GND 9 GND Ground


The demo shows how to use the SPI LCD library to communicate with the LCD (with HD44780 compliant controllers) in 4-bit mode via the SPI interface. It also uses the PWM for the backlight and the on board digital potentiometer, for controlling display contrast, which can be accessed through SPI. The demo iterates through all the values for the backlight and the contrast intensity.

Code snippet

The main function of the demo.

01 void main()
02 {
03     system_init();
05     SPI_Lcd_Out(1, 6, "mikroE");
06     SPI_Lcd_Out(2, 2, "LCD mini click");
08     set_bcklight(0xFF);
09     set_contrast(0xDF);
11     Delay_ms(5000);
13     while (1)
14     {
15         set_bcklight(value);
16         set_contrast(value);
18         value++;
19         delay_ms(40);
20     }
21 }


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