Page 12 of 27USER MANUAL RC1882-RIIM-DK DEVELOPMENT KITļ2019 Radiocrafts AS User Manual RC1882-RIIM-DK Development Kit Rev. 1.00Block DiagramJTAG/cJTAGUSB to UARTRegulator3.3V / 50 mAP3SMAP1USBButtons:RESETP8: JTAGProgrammingConnectorUSBVBUS (5V/100mA)USBLEDsRFSub1GHz3V3OUTRadiocraftsModuleUARTP4-P7: 4*10 pins I/O connection, pitch 2.54mmI/OLEDsPoweronswitchFigure 7. Block schematic RC1882CEF-IPM-DB