01 Apr 2006 13:13 DTMF generator circuit needed, plz help
HI
i need a dtmf generator circuit. please give me the full schematic along with the program file (if any). it would be helpful for me (other ones will also do) if anyone give me the dtmf generator circuit using um91215a ic.
please help.
thanks
Joined: 01 Mar 2005 Posts: 588 Helped: 90 Location: Persia
01 Apr 2006 19:41 DTMF generator circuit needed, plz help
Hi squirrel,
If you use AVR ucontroller check this link:
http://www.atmel.com/dyn/resources/prod_documents/DOC1982.PDF
and it's SW:
http://www.atmel.com/dyn/resources/prod_documents/avr314.zip
or you can use DTMF generator ICs such as MT8888, ....