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External V
Connector (JP1)
DD
USB Power Connector (J2)
External V
Connector (JP2)
SS
Figure 2-7 External Power Supply Sources on M031 platform
Table 2-11 presents all power models when supplies external power through M031 platform. The
M031 platform external power sources are highlighted in yellow.
Target Chip
[1]
Model
Vin
Voltage
7 V ~ 12 V
4
3.3 V
Input
5
3.3 V
X
7 V ~ 12 V
6
5 V
Input
7
5 V
X
[5]
8
1.8 V ~ 3.6 V Ignore
[5]
9
1.8 V ~ 3.6 V Ignore
X: Unused.
Note:
1.
The Vin input voltage will be converted by voltage regulator UP2 to 5 V.
0Ω should be removed from ICEJPR1's MCUVCC and 1.8 V / 3.3 V / 5 V.
2.
0Ω should be soldered between ICEJPR2's ICEVCC and 1.8 V / 3.3 V.
3.
4.
The ICE chip voltage should be close to the target chip voltage.
5.
JP1 external power input only provides voltage to target chip. Supply external power to Vin or J2 can provide
5V to NU1 pin5 (5V) and 3.3V to NU1 pin4 (3VCC).
Table 2-11 Supply External Power for M031 platform
Feb.
20, 2019
NU1 pin8 (Vin)
SW2
J2
ICEJ3
Selection
NU1
X
Ignore
3VCC
Connect
NU1
Ignore
to PC
3VCC
NU1
X
Ignore
5VCC
Ignore
Connect
NU1
to PC
5VCC
Connect to
[5]
Ignore
OFF
PC
Nu-Link2-Me
[5]
Ignore
OFF
removed
Page 19 of 37
NuMaker-M031SD
"
Separate Nu-Link2-Me
ICEJPR1
ICEJPR2
JP1
(MCUVCC)
(ICEVCC)
[2]
Selection
Selection
Remove
3.3 V output
resistor
Remove
3.3 V output
resistor
Remove
5 V output
resistor
Remove
5 V output
resistor
DC Input
Remove
1.8 V / 3.3 V 1.8 V / 3.3 V
1.8 V ~ 3.6 V
resistor
DC Input
X
1.8 V ~ 3.6 V
ICE Chip
[4]
Voltage
[3]
3.3 V
3.3 V
3.3 V
3.3 V
3.3 V
3.3 V
3.3 V
3.3 V
X
X
Rev 1.00
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