NuMaker-M071R1E
Dec. 14, 2020
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Rev 1.00
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3.4
Power Supply Configuration
The NuMaker-M071R1E is able to adopt multiple power supplies. External power sources include NU1
Vin (7 V to 12 V), V
DD
(depending on the target chip operating voltage), and PC through USB connector.
By using switches and voltage regulator, multiple power domains can be created on the NuMaker-
M071R1E.
3.4.1
VIN Power Source
Table 3-4 presents the Vin power source.
Connector
Net Name in
Schematic
Description
NU1 pin8
NU1_VIN
Board external power source, with voltage range from 7
V to 12 V. The voltage regulator UP2 converts the NU1
pin8 input voltage to 5 V and supplies it to NU1_5VCC.
Table 3-4 Vin Power Source
3.4.2
5 V Power Sources
Table 3-5 presents the 5 V power sources.
Connector
Net Name in
Schematic
Description
ICEJ3
USB_HS_VBUS
ICE USB connector supplies 5 V power from PC to
M071R1E target board and Nu-Link2-Me.
J2
USB_VBUS
USB connector on NuMaker-M071R1E supplies 5 V
power from PC to M071R1E target board and Nu-Link2-
Me.
NU1 pin5
NU1_5VCC
ICEJ3, J2 or NU1 pin8 supplies 5 V power to NU1 pin5.
NU1 pin5 supplies 5 V power to target chip or Arduino
adapter board.
Table 3-5 5 V Power Sources
