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how do i use 8bit lcd (jhd162a) in 4 bit mode using AT89s52

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viccram

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lcd jhd162a

how do i use 8bit lcd (jhd162a) in 4 bit mode using AT89s52

i have been using 8bit lcd in normal 8bot mode but i am not getting the idea how to select 4 bit mode
and also not clear what else should i do to use in 4bit mode
 

jhd 162a

Follow the programming specification in the manual and set bit DL=0 in function set command.
 

jhd162a

but i dont have the programming manual
neither do i hav the datasheet of the lcd module in english
even though i searched it from the net but it did not work when i tried coding using the instructions given
 

8 bit lcd mode

Here is a tutorial..

**broken link removed**

you can also find code in the same site both in asm and C

Happy programming

Nandhu
 

pdf: jhd162

viccram said:
how do i use 8bit lcd (jhd162a) in 4 bit mode using AT89s52

i have been using 8bit lcd in normal 8bot mode but i am not getting the idea how to select 4 bit mode
and also not clear what else should i do to use in 4bit mode
Click to expand...

1st. you will use 4data line instead of 8-data lines.
2nd. your data will be split in two nibbles (upper byte and lower byte).

for more details visit this link..

-->> https://www.8051projects.info/exp4.asp

-->> https://www.8051projects.net/lcd-interfacing/lcd-4-bit.php

all the best,.....:D
 

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