nanhifi
Newbie level 1
mt8889
I found that using mt8889 chip can be a receiver and transmitter. I just want to make a dtmf dialer since the original circuit are now using a um95089 not avaible at my country. I just want to know the complete practical circuit that using mt8889 to generate the dtmf coded. Hopely someone can tell me.. please help..
I found that using mt8889 chip can be a receiver and transmitter. I just want to make a dtmf dialer since the original circuit are now using a um95089 not avaible at my country. I just want to know the complete practical circuit that using mt8889 to generate the dtmf coded. Hopely someone can tell me.. please help..