NuMaker-M252SD
Aug.
02, 2019
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Rev 1.00
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System Configuration
2.5.1 VIN Power Source
Table 2-3 presents the Vin power source.
Connector
Net Name in
Schematic
Comment
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 NuMaker-
M252SD.
Table 2-3 Vin Power Source
2.5.2 5 V Power Sources
Table 2-4 presents the 5 V power sources.
Connector
Net Name in
Schematic
Comment
ICEJ3
USB_HS_VBUS
ICE USB connector supplies 5 V power from PC to
M252 platform and Nu-Link2-Me.
J2
USB_VBUS
USB connector on NuMaker-M252SD supplies 5 V
power from PC to M252 platform 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.
Note:
M252 operating voltage range is from 1.8 V to 5.5
V. Do not switch SW2.1(NU1 5VCC) to ON.
Table 2-4 5V Power Sources
2.5.3 3.3 V Power Sources
Table 2-5 presents the 3.3 V power sources.
Voltage Regulator
5V Source
Comment
ICEUP1
USB_HS_VBUS
ICEUP1 converts USB_HS_VBUS to 3.3 V and supplies
3.3V to M252 platform
or ICE chip.
UP1
USB_VBUS
UP1 converts USB_VBUS to 3.3 V and supplies 3.3 V
to M252 platform.
Note:
SW2.2(NU1 3VCC) should be switched to ON.
UP1
NU1_5VCC
UP1 converts NU1_5VCC to 3.3 V and supplies 3.3 V to
M252 platform.
Note:
SW2.2(NU1 3VCC) should be switched to ON.
Table 2-5 3.3 V Power Sources
