8051 LCD Interfacing code (In 4bit mode)

[Narendra Krushnavanshi]

I am interfacing 16x2 lcd with at89c51 (4-bit mode). but there are some problems, i dont know where, i need help, plz help see circuit image...if i did mistake in hardware connection, plz tell where i did mistake...PLZ frnds help

 

[nandhu015]

I found few things

1. Contrast pin needs to be connected through 10K preset

2. In 4 bit mode you need to connect pin D4 through D7 of lcd to micro, But i cant see D4, D5 connected to micro. Instead D0 and D1 connected to micro

Google you can find a lot of circuits and example codes

 

[tpetar]

LCD interfacing with Microcontrollers tutorial - 4-bit Mode
https://www.8051projects.net/lcd-interfacing/lcd-4-bit.php

LCD interface with micro-controller 8051
**broken link removed**

Best regards,
Peter

:wink: