The　aim　of　this　paper　is　the　development　of　a　frequency　modulated　signal　generator　and　receiver　for　intrabody　communication　(IBC)　using　Programmable　System-on-Chip　(PSoC)　microcontrollers　by　Cypress.　The　program　is　developed　in　Cypress　PSoC　Creator　and　PSoC　Designer　programs　for　the　CY8C27643　-　24PVXI　and　CY8C5888LTI　-　LP097　microcontrollers.　Based　on　the　input　received　from　the　serial　bus,　the　signal　generator　synthesizes　a　FSK　signal　using　digital-to-analog　conversion.　The　signal　is　transmitted　between　transmitter　and　receiver　IBC　electrodes　placed　on　the　human　body.　The　received　signal　is　then　demodulated　using　low　pass　and　band　pass　filters　and　a　correlator　and　forwarded　back　to　the　computer　using　the　serial　bus.　©　2016　Croatian　Society　MIPRO.