: Instead of using 6–10 digital pins in parallel mode, this I2C version uses only 4 connections: VCC (5V), GND, SDA , and SCL .
Connect a from the SDA line to VCC (+5V).
LM016L (This is the standard 16x2 LCD model in Proteus). Pull-up Resistors: RES (Two pieces needed for the I2C bus). Step 2: Wiring the PCF8574 to the LM016L LCD
Let's create a simple simulation. We will connect an Arduino Uno (or PIC) to the I2C LCD. jhd-2x16-i2c proteus
Here is an example of a complete, functional schematic connection in Proteus:
: This example displays "Hello, World!" and a counter.
// Print a welcome message lcd.setCursor(0, 0); lcd.print("Hello, World!"); : Instead of using 6–10 digital pins in
: Built-in potentiometer for contrast and firmware-controlled backlight. Arduino Forum Proteus Simulation Setup Component Selection
Connect the I2C lines from your microcontroller (e.g., ATmega328P/Arduino Uno) to the expander: →right arrow SDA (Pin 15) on PCF8574 A5 (SCL) →right arrow SCL (Pin 14) on PCF8574 Add Pull-up Resistors : Place two
To run the simulation, the library is required. Pull-up Resistors: RES (Two pieces needed for the I2C bus)
Click the Play button in the bottom-left corner of Proteus. 5. Troubleshooting Common Issues
This indicates the LCD layout did not receive the correct 4-bit initialization sequence. Verify that your code library's pin mappings (RS, RW, E) perfectly match the physical connection lines hooked up between your PCF8574 and your LM016L component.
The is a highly popular alphanumeric LCD module simulated in Proteus to display text, numbers, and custom characters using only two data lines.
From the Proteus component library ( P key), pick the following: