Product Info

GPIO
One dedicated input, two dedicated outputs, and one general purpose IO are
presentedtotheexternal
environment onthemainconnector. They are capable of providing
system interrupts to generate are port or drive logic levels to external devices. These
lines are 2.8V logical velandare16V tolerant. These pins default to input and are pulled
down representing 0 when disconnected. They should be asserted to a known value if
used.
LED’s
TwoLEDstatusindicatorsareprovidedto verifycorrectinstallationandoperation.Thestatus
LEDsarecolorcodedanddirectlyconveythestatusofthecellularandGPSsubsystems as
describedinthetablebelow.Theirvalidoperationalsoindicatesoperationalstatusandpower.
LED
Function
Status
Red
GPS
On:
GPSsatellitesacquiredandLocked
FlashSlow:GPSsatellitesearchisinprogress
30 Sec Blink: Device in low power mode
Off:NopowerorGPSsubsystemfault
Green
Cellular
Connection
On:Indicates2Gconnectionismade
FlashSlow:2Gsubsysteminitialization in progress
FlashFast:2G initialization but no data connection
available
Off:Nopower Low power modeor2Gsubsystemfault
ThePN-GprovidesusercontrolallowingtheLEDstobeextinguishedonceinstallation
isverified.ThisfeaturereducespowerandfurtherconcealsthePN-GTrackerfrom
untrainedpartieswishingtodefeatitsoperation.
UART
There is one UART provided. A debugUARTportis
providedforATcommands,datainteraction andoptionallyforapplication specificcontrol.
RelayDriver
A500mAsinkcapableoutputpinisprovided.Thispinismeant todrive arelaycoilindented
tointerruptthestartersolenoidrelayfortheignitioncircuittoacar.
Power and Battery
Thebatterymonitor isinternalanaloginputscaledsuchthattheDCvalueofthepowerinput
pintothePN-Gsystemis measured.Thisvalueisscaledtospanthemostsignificant8
bitsoftheA/Dandconsequentlycoversascalefrom0 to28Volts.
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