EZGPM01 Datasheet, PDF (7/10 Pages) List of Unclassifed Manufacturers – GPS RECEIVER

EZGPM01 data sheet
Velocity
Time
DGPS Accuracy
Position
Velocity
Datum
Time-To-First-Fix
Reacquisition
SnapStart™
Hot Start
Warm Start
Cold Start
Serial Port
Electrical Interface
Protocol support
Time – 1PPS
Level
Pulse Duration
Time Reference
Measurement
0.1 meters/second (SA off)
1 sec synchronized to GPS time
< 5 meters (SA off)
0.05 meters/second, typical
WGS-84
100ms
< 3 seconds
< 8 seconds
< 38 seconds
< 45 seconds
2 full duplex serial communication
NMEA, SiRF binary, RTCM SC-104
CMOS
100 ms
At the pulse positive edge
Aligned to GPS second
Table 4: Electrical Specifications
Operating Modes
TricklePower™ Description
The TricklePower™ mode provides the lowest average power dissipation by powering down the
module after a position fix. It cycles through three states: tracking state(or full power), cpu state, and
trickle state.
The receiver is in the full power tracking state when it is first turned on, after a system reset, and when
the internal RTC wakeup interrupt is generated. Satellite search, initial acquisition, initial position
calculation, and tracking measurements are always taken in full power.
In the CPU state, the RF antenna section and GPS clock has been turned off, although the RTC keeps
running. The CPU would keep running to process the GPS data until a position fix is determined and
the result has been transmitted by the serial communication interface.
The trickle state is a low power standby state in which the CPU clock and RF circuits are turned off but
power is still applied to the baseband. After a set amount of time, the receiver wakes up, makes a
reset and tries to acquire satellites.
Copyright © EAZIX, Inc. 2004. All Rights Reserved
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