Data Sheet

41 A4 IO nRF52 A4,D4,SPIMOSI
42 GND POWER Ground
TopSide
43 GND POWER Ground
44 NCSOM44 Leaveunconnected.
45 3V3
POWER
OUT
TPS62291
3.3Vpoweroutput.1000mAmaximumincludenRF52andother
peripheraluse.
46 TS IN PMIC Batterytemperaturesensor
47 PMID
POWER
OUT
PMIC PMICpoweroutputinOTGmode.
48 GND POWER Ground
49 VIN
POWER
IN
PMIC Powerinput3.88VDCto12VDC.
50 STAT OUT PMIC
PMICchargestatus.CanbeconnectedtoanLED.Activelow.
Optional.
51 VBUS
POWER
IN
PMIC&
nRF52
nRF52USBpowerinput.Canbeusedasapowersupplyinstead
ofVIN.
52 GND POWER Ground
53 LI+ POWER PMIC
ConnecttoLi-Pobattery.Canpowerthedeviceorberecharged
byVINorVBUS.
LeftSide
54 GND POWER Ground
55 A0 IO nRF52
A0,D0,WireSDA,Thermistor
1
56 A1 IO nRF52
A1,D1,WireSCL,Userbutton
1
57 A2 IO nRF52
A2,D2,Serial1CTS,GNSSlockindicator
1
58 A3 IO nRF52
A3,D3,Serial1RTS,M8GPIO
1
59 NCSOM59 Leaveunconnected.
60 NCSOM60 Leaveunconnected.
61 NCSOM61 Leaveunconnected.
62 NCSOM62 Leaveunconnected.
63 AGND POWER nRF52 nRF52analogground.CanconnecttoregularGND.
64 CAN_N CAN CAN CANData-
65 CAN_P CAN CAN CANData+
66 CAN_5V XCL9142F40 5Vpowerout,0.8Amaximum.Canbecontrolledbysoftware.
67 GND POWER Ground
68 MCU-D- USBD- nRF52 MCUUSBinterfaceD-.Optional.
69 MCU_D+ USBD+ nRF52 MCUUSBinterfaceD+.Optional.
70 GND POWER Ground
71 MCU_RX IO nRF52 SerialRX,GPIOD9,Wire3SDA
72 MCU_TX IO nRF52 SerialTX,GPIOD8,Wire3SCL
73 RTC_BAT POWER AM18X5 RTC/Watchdogbattery+.ConnecttoGNDifnotusing.
74 RTC_BTN IN AM18X5 RTCEXTI.Canuseasawakebutton.
75 GND POWER Ground
76 NCSOM76 Leaveunconnected.
77 NCSOM77 Leaveunconnected.
78 NCSOM78 Leaveunconnected.
79 NCSOM79 Leaveunconnected.