To drive the JHD2X16I2C display, you must use an I2C LCD library. The standard LiquidCrystal_I2C library works perfectly for this setup. The Source Code
To run the simulation, you will need the LiquidCrystal_I2C library in your Arduino IDE.
The standard LM016L or JHD162A models in Proteus use 16 pins (Parallel). They do not natively support the 2-pin I2C interface (SDA, SCL).
Connect the PCF8574's SDA and SCL pins to your microcontroller (e.g., Arduino Uno pins A4 and A5).
Once you have downloaded the library (usually a .zip file containing .LIB and .IDX files), follow these steps: Extract the contents of the download.
: If the Proteus I2C debugger window shows "NACK Received", your pull-up resistors on SDA and SCL are either missing or their resistance values are too high. Change the resistor values to 4.7kΩ .
Simulating an I2C character display saves development time and prevents hardware damage. The JHD2X16I2C is a popular 16x2 Liquid Crystal Display (LCD) that utilizes the I2C communication protocol to minimize microcontroller pin usage. This comprehensive guide covers how to find, install, and simulate the JHD2X16I2C LCD in Proteus for free. Understanding the JHD2X16I2C LCD
To simulate the LCD module in Proteus for free, you typically need to add external library files since it is not always included in the default library. Finding and Installing the Library