You would need:
对于所有使用JHD-2X16-I2C进行开发的工程师来说，是：该LCD模型只支持I2C写命令（I2C write commands）， 不支持忙标志检测 （busy flag test）。
Which you are planning to use (e.g., Arduino Uno, ESP32, PIC, STM32). jhd2x16i2c proteus exclusive
PCF8574 (This acts as the backpack interface for the JHD2X16I2C).
在Proteus仿真环境中，I2C总线的仿真本身就曾是一个技术挑战。早期的I2C仿真存在一定的不确定性，后来的Proteus版本则极大地完善了这一功能。JHD-2X16-I2C作为内置的I2C从设备，完整地实现了I2C总线协议从设备端的仿真行为。 If your PCF8574 A0-A2 pins are grounded, ensure
Copy the downloaded files and paste them into your Proteus library directory:
Check the I2C address configuration. If your PCF8574 A0-A2 pins are grounded, ensure your code specifies 0x27 . If pins are tied to VCC, try updating the address to 0x3F . Tie both the SDA and SCL lines to
Connect the control pins (RS, RW, E) to the PCF8574 (P0, P1, P2).
Tie both the SDA and SCL lines to the VCC (+5V) rail using your
: If the JHD2X16I2C is not in your default pick list, you may need a custom Proteus Library . Download the .LIB and .IDX files.
The JHD-2X16-I2C component is compatible with most standard I2C LCD libraries, provided the address is configured correctly. For Arduino users, the standard LiquidCrystal_I2C library works perfectly when instantiated with address 0x7C. For PIC microcontrollers using MPLAB XC8, the MSSP (Master Synchronous Serial Port) peripheral can be configured for I2C mode with careful attention to clock and address settings.