NuMaker-M2351SFSep. 24, 2019 Page 16 of 35 Rev 1.00NUMAKER-M2351SF USER MANUALMaker Nu-mbed NUC472 User Manual2.5.4 1.8V Power SourcesTable 2-6 presents the 1.8 V power source.Voltage Regular 5V Source CommentICEUP2 USB_HS_VBUS ICEUP2 converts USB_HS_VBUS to 1.8V and supplies1.8V to M2351SF platform or ICE chip.UP3 NU1_5VCC UP3 converts NU1_5VCC to 1.8V and supplies 1.8V tointernal SPI flash.Table 2-6 1.8V Power Sources2.5.5 Power ConnectorsTable 2-7 presents the power connectors.Connector CommentJP1 VDD (1.8 V ~ 3.6 V) connector on the NuMaker-M2351SF.JP2 VSS connector on the NuMaker-M2351SF.VBAT VBAT connector on the NuMaker-M2351SF.Table 2-7 Power Connectors2.5.6 USB ConnectorsTable 2-8 presents the USB connectors.Connector CommentICEJ3 ICE USB connector on Nu-Link2-Me for power supply, debugging andprogramming from PC.J2 USB FS connector on NuMaker-M2351SF for power supply.Table 2-8 USB Connectors2.5.7 Power SwitchesTable 2-9 presents the power switches.Switch CommentICEJPR1 Configures the target chip operating voltage at 1.8 V / 3.3 V / 5 V.ICEJPR2 Configures the ICE chip operating voltage at 1.8 V / 3.3 V.SW2 Configures the target chip operating voltage at 3.3 V / 5 V.Table 2-9 Power Switches