Figure 2-6 External Power Supply Sources On M252 Platform - Nuvoton NuMicro M252 Series User Manual

External Power Supply through M252 platform to Target Chip
The external power supply sources on M252 platform are shown in Figure 2-6.
External V Connector
DD
(JP1)
USB Power Connector
(J2)
External V Connector
SS
(JP2)

Figure 2-6 External Power Supply Sources on M252 platform

To use Vin or J2 as external power supply source, please follow the below steps:
1. Switch the SW2 depends on the target chip operating voltage.
2. Remove the resistor on ICEJPR1 (MCUVCC).
3. Solder the resistor on ICEJPR2 (ICEVCC) depends on the ICE chip operating voltage.
4. Connect the external power supply to Vin or J2.
To use JP1 as external power supply source, please follow the below steps:
1. Switch the SW2 to OFF.
2. Remove the resistor on ICEJPR1 (MCUVCC).
3. Solder the resistor on ICEJPR2 (ICEVCC) depends on the ICE chip operating voltage.
4. Connect ICEJ3 to PC.
5. Connect the external power supply to JP1.
To use Vin or J2 as external power supply source with Nu-Link2-Me separated from NuMaker-
M252SD, please follow the below steps:
1. Switch the SW2 depends on the target chip operating voltage.
2. Separate the Nu-Link2-Me from NuMaker-M252SD.
3. Connect the external power supply to Vin or J2.
To use JP1 as external power supply source with Nu-Link2-Me separated from NuMaker-M252SD,
please follow the below steps:
1. Switch the SW2 to OFF.
2. Separate the Nu-Link2-Me from NuMaker-M252SD.
3. Connect the external power supply to JP1.
Aug. 02, 2019
NU1 pin8 (Vin)
Page 18 of 38
NuMaker-M252SD
Rev 1.00