Globalsat EM-506 [3/17] Electrical specification

Globalsat EM-506 [3/17] Electrical specification
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Product Pin Description
PIN Number(s) Name Type Description Note
1
GND P Ground.
2
VIN P
This is the main power supply to the engine
board. (3.1Vdc to 3.5Vdc)
3 RXD I
This is the main receive channel for
receiving software commands to the engine
board from SiRFdemo software or from user
written software.
4
TXD O
This is the main transmits channel for
outputting navigation and measurement
data to users navigation software or user
written software. Output TTL level.
5
VBAT P
This is the battery backup power input for
the SRAM and RTC when main power is
removed.
6
1PPS O
One pulse per second output.(1PPS)
Electrical Specification
Absolute Maximums Ratings
Parameter Min. Typ. Max. Conditions Unit
POWER Supply
Main power supply(VCC) 3.1 3.3 3.5 V
Backup battery supply 2.0 3.5 V
Main power supply Current 45 50 55 GPS is not 3D Fixed. mA
Backup battery supply Current 50 uA
RF Input
Input Impedance 50
Operating Frequency 1.575 Ghz
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