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HOME   Technical Tips

SERIAL PORT LCD TFT TEXT DISPLAY

LCD TFT is digital display at its best, it displays versatile clear picture. The picture is built by entering the address and the color of a pixel or rectangle, so it's simple to use too.
LCD TFT to display text using PIC16F876A . Included C code and circuit diagram. The LCD TFT module is a 1.8" 128 X160 pixel. The LCD is driven by SPI.
The text is sent to the TFT via the serial port. Each character is 8x12 pixels stored in the VB6 application; there is no memory enough in this pic for the data. For each character the VB transmit 12 bytes.
LCD TFT modules vary depending on the drive IC. The module in the project has the driver ST7735 . I bought this module directly from China because the price was more sensible.
Code was written on MPLAB and compiled with the free HI TECH C compiler V9.80
Software includes PIC code. You are free to use the circuit diagram and the software with no limitations.

Circuit Description
See also Technical Tips

The crystal is a 8MHz.
Supply is 5V +/-10%. Input signal is TTL levels.
BC337 inverts the signal from the serial port and converts it to TTL level as needed by the pic.
The module in the project has the driver ST7735.






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