• DTMF IC
    You can use HT9170B or MT8870 as DTMF decoder IC with 8051.
  • dtmf decoding
    hey!! i am trying to decode a DTMF tone by using a decoder chip then i send it to the microcontroller at89s52 and then display the output in the lcd but when the key on the telephone set is pressed...
  • DTMF tone generation
    Hi, I want to generate DTMF tones using 89S52 controller. I am using a crystal of frequency 11.059MHz. Can anybody help to proceed further.
  • dtmf de coder
    plz send the dtmf de coder example to sami1984@hotmail.com
  • verify vector checksum
    Hi, I've installed a second bootloader code, which is already running, but I'm facing a problem to test if the user application is really valid. My bootloader which starts at 0x00 will start...