Reference Manual

Arduino®NiclaSenseME
Arduino®NiclaSenseME/Rev.01-12/07/202113/20
NiclaSenseMEBackView
TheArduinoNiclaSenseMEcanbepoweredviamicroUSB(J7),ESLOV(J5)orVIN.Thisisconvertedintothe
releventvoltagesviatheBQ2512BAYFPRIC(U9).Aschottkydiodeprovidesreversepolarityprotectiontothe
USBandESLOVvoltages.WhenvoltageissuppliedviathemicroUSB,alinear3.3Vregulatoralsoprovides
powertotheSAMD11microcontrollerusedforprogrammingtheboardaswellasforJTAGandSWD.TheLED
driver(U8)andRGBLeds(DL1)aredrivenbyaboostvoltageof5V.Allothercomponentsoperateoffthe1.8Vrail
regulatedbyabuckconverter.PMIDactsasanORswitchbetweenVINandBATTandoperatestheLEDdriver.
AllI/ObrokenouttothepinsarefedthroughabidirectionvoltagetranslatorrunningatV
DDIO_EXT
.
Additionally,theBQ25120AYFPR(U9)alsoprovidessupportforasinglecell3.7VLiPo/Li-ionbatterypack
connectedtoJ4,allowinguseoftheboardasawirelesssensornetowork.