NuMaker-M256SD
May 20, 2022
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Rev 1.00
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Table 3-13 presents all power models when supplies external power through M256SD target board. The
M256SD target board external power sources are highlighted in yellow.
Model
Target Chip
Voltage
Vin
[1]
J2
[1]
ICEJ3
SW2
Selection
JP1
[2]
ICEJPR1
(MCUVCC)
Selection
[3]
ICEJPR2
(ICEVCC)
Selection
[4]
ICE Chip
Voltage
[5]
4
3.3 V
7 V ~ 12 V
Input
-
-
NU1
3VCC
3.3 V output
Remove
resistor
3.3 V
3.3 V
5
3.3 V
-
Connect
to PC
-
NU1
3VCC
3.3 V output
Remove
resistor
3.3 V
3.3 V
6
5 V
7 V ~ 12 V
Input
-
-
NU1
5VCC
5 V output
Remove
resistor
3.3 V
3.3 V
7
5 V
-
Connect
to PC
-
NU1
5VCC
5 V output
Remove
resistor
3.3 V
3.3 V
8
1.8 V ~ 3.6 V
-
-
Connect to
PC
OFF
DC Input
1.8 V ~ 3.6 V
Remove
resistor
1.8 V / 3.3 V 1.8 V / 3.3 V
9
1.8 V ~ 3.6 V
-
-
Nu-Link2-Me
removed
OFF
DC Input
1.8 V ~ 3.6 V
-
-
-
Note
:
1. The Vin input voltage will be converted by voltage regulator UP2 to 5 V. Supplying external power to Vin or J2 can
provide 5 V to NU1 pin5 (5V) and 3.3 V to NU1 pin4 (3VCC).
2. JP1 external power input only provides voltage to target chip.
3. 0
Ω should be removed from ICEJPR1’s MCUVCC and 1.8 V / 3.3 V / 5 V.
4. 0
Ω should be soldered between ICEJPR2’s ICEVCC and 1.8 V / 3.3 V.
5. The ICE chip voltage should be close to the target chip voltage.
6. -: Unused
Table 3-13 Supply External Power for M256SD Target Board
