is an in the Proteus library that acts as a standalone I2C-enabled display. Key Specifications Go to product viewer dialog for this item.
// Function to send commands and data to the LCD over I2C void LCD_Write(unsigned char addr, unsigned char value) I2C_Start(); I2C_Write(0x7C); // Device address (JHD2x16I2C exclusive address!) I2C_Write(addr); // Control byte (e.g., 0x00 for command, 0x40 for data) I2C_Write(value); // The actual command or character data I2C_Stop();
Go to System -> Set Simulation Options and change the single-step delay, or lower the operating frequency of your microcontroller property settings (e.g., set Arduino clock from 16MHz to 8MHz temporarily). If you want to refine this setup, let me know: What microcontroller are you using for the simulation?
Standard 16x2 LCDs typically require up to 6 or 7 GPIO pins to operate in 4-bit parallel mode. The JHD2X16I2C simplifies this constraint by embedding an I2C expander chip (often the PCF8574 or a proprietary controller) directly onto the display PCB. Key Technical Specifications : 16 characters per row, 2 rows. Communication Interface : I2C (Inter-Integrated Circuit). jhd2x16i2c proteus exclusive
Connect the Microcontroller's hardware I2C pins to the PCF8574:
Copy the downloaded files and paste them into your Proteus library directory:
The JHD2X16I2C is a widely used 16x2 character LCD module equipped with an integrated I2C adapter (typically based on the PCF8574 chip). Interfacing this display with microcontrollers like Arduino, PIC, or STM32 reduces the required data pins from sixteen down to just two: Serial Data (SDA) and Serial Clock (SCL). is an in the Proteus library that acts
void setup()
: Developers can use a virtual terminal in Proteus to scan and confirm the virtual I2C address before moving to a breadboard.
Wire.begin(); lcd.begin(16, 2); lcd.backlight(); lcd.setCursor(0,0); lcd.print("Proteus Test"); lcd.setCursor(0,1); lcd.print("JHD2X16I2C"); If you want to refine this setup, let
Simulating the JHD2X16I2C inside Proteus VSM allows developers to test code, verify I2C addressing, and debug visual outputs without risking hardware damage. This exclusive guide covers everything from finding the correct library files to building the circuit and running the simulation code. 1. Setting Up the Proteus Environment
Unlike the standard LCD, which requires a rats nest of wires, the exclusive I2C model requires only 4 wires:
There is no magic jhd2x16i2c component in Proteus. The is:
Click the button in the bottom-left corner of the Proteus workspace. Troubleshooting Common Simulation Glitches