You can make a PIC do that. Use an SX28 to get higher frequencies. Rick Richard Sloan wrote: > Anyone know of an IC that allows you to program a basic square wave output, variable from 10K to 150Khz in steps of say 1KHz? > > Hopefully serial control. I2C SPI etc... > > Richard. > > -- > http://www.piclist.com hint: To leave the PICList > mailto:piclist-unsubscribe-request@mitvma.mit.edu -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu