GPS Receiver Module
GPS-41EBR
GPS-41EBF
Pin-10
Pin-1
UT-41EBF Lateral View
PINOUT DESCRIPTION
Pin Number Signal Name
Description
1
Serial Data Out 1 Asynchronous serial output at LVTTL level, to output NMEA message
2
Serial Data In 1 Asynchronous serial input at LVTTL level, to input commands
Pull high if not used
3
VCC
Regulated 3.3V power input (3.3V version)
3.8V ~ 8.0V (5V version)
4
GND
Ground
5
PIO Output
PIO output, default used for GPS status indication
6
1PPS
1 pulse per second time mark
7
RESET IN
Reset input, active LOW
8
Serial Data In 2 Asynchronous serial input at LVTTL level, to input DGPS RTCM data
Pull high if not used
9
VBAT
Optional 3.3V backup power input to sustain RTC and SRAM data
10
Antenna Power Power input for active antenna
1PPS Output
The GPS receiver is in navigation mode upon power-up, with 1PPS output free running. After 3 minutes of
valid position fix and remaining under static-mode, the receiver changes to timing-mode, with 1PPS output
signal synchronized to the UTC second. The receiver will change to navigation-mode, with 1PPS output free
running, if the receiver is in motion. The 1PPS output will become synchronized to the UTC second again after
the receiver had remained in static mode for 3 minutes.
DS-41EB-3 Oct ’06
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Tel 01273 898000 Fax 01273 480661
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