Originally Posted by techknow

Does anyone have a simple asm code for LCD and PIC16F628 interface...cause i got some big codes..damm ..so i need an simple one which can print an "hello" word. cause i am also a biginner for microcontroller programing from asm. and i use MPLAB and ICPROG..i hope u guys will get me a good working and simple asm code for LCD intreface. any way thanks for willib

You can look at Nigel's website or..http://home.iae.nl/users/pouweha/lcd/lcd.shtml

and i need the PIC programmer from you! TQ

Hello amady and Nigel Goodwin...thank you guys for helping...i have visited the site that u guys mentioned...and it was very help full...tonight i will work on that and inform you guys..

Do u need the circuit diagram of my picprogrammer or the software...

Originally Posted by techknow

Do u need the circuit diagram of my picprogrammer or the software...

all :lol:

Amady here is the program and the circuit that i am using..it is working perfectly..so u try it and letme know...
http://www.ic-prog.com/index1.htm from here you can get the software and the sys file ..if u r using windows XP or NT...If u need to view a picture of the working programmer here is the link.
http://www.varunulaa.com/forum/viewtopic.php?p=217#217

hey guys did anyone interface HT9202G to a pic16f628...cause i am trying to make a DTMF dialer...i have some difficulty to write the code. hope u guys will help me .

Hello willib..so u like it..i drew it on protel (the latest professional circuit drawing software) it very easy..and the best part is all the compornent library is there and PCB also can be draw to the scale..hope for more from u

hello willibi here is the link to HT9202G.pdf
http://www.alldatasheet.com/datashee...K/HT9202G.html
i am realy in need of a guy who can help me to make this work...it work with a keypad but the difficulty is when i connect it to a pic it does not..so hope for a solution

hello samcheetah. i am trying to make HT9202G works with pic16f628 but still it did not. the difficult part is its very difficult to get an DTMF IC which can interface to pic. But i have seen another cool ic from holtek it is HT9200A and HT9200B these two ic's can be interface to a microcontroller like pic and etc...and u can get data sheet from
http://www.alldatasheet.com/datashee...K/HT9200B.html

This DTMF ic is very easy to interface to microcontroller...by serialy and parallel..but i could not get from my region...
i am in maldives which is located in indian ocean and i face lots of difficulties to get compornents..i got HT9202G from a telephone. I think it is an general DTMF dialer ic which everyone use for phone applications..
hope a good news from u..

Originally Posted by techknow

hello willibi here is the link to HT9202G.pdf
http://www.alldatasheet.com/datashee...K/HT9202G.html
i am realy in need of a guy who can help me to make this work...it work with a keypad but the difficulty is when i connect it to a pic it does not..so hope for a solution

Your problem is that the HT9202G is designed for a multiplexed keypad, so you can't simply connect the PIC to it - you need free-floating switches to feed the HT9202G.

The simplest way would be to use small DIL relays fed from the PIC, one for each button - rather crude, but it would work.

hello Nigel Goodwin...thanks for the hint..
i thought insted of relays i can use CD4066 indeed it is an CMOS QUAD BILATERAL SWITCH it will work with PIC ,which is the voltage level is compatible. relays makes more sound anyway thanks for all that.
http://www.alldatasheet.com/datashee...TI/CD4066.html
can u give me an DTMF ic which can get easyly but it should be interface with PIC