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8
RGM-3550LP User Manual
24 Storage temperature
-40 ~ +85
(except for SRAM battery backup -40
to +60 degree Celsius)
25 Humidity
95%
26 Lead Free Yes
External Antenna RF Input
27
Drive Output Voltage
2.85V ± 0.5%
28 Drive Output Current 30mA (max)
29 Connector Type MMCX
Interface Pin definition (VDD=2.85V±2%)
Pin # Signal Name I/O Description Characteristics
1 RX I Serial port A
VDDVVDDV
ILIH
*3.0 *7.0
2 TXA O Serial port A
VDDVVDDV
OLOH
25.0 *75.0
3 GND G Ground Reference Ground
4 VCC I DC Supply
Voltage input
DC +3.3V±5%
5 GPS Status O GPS Status
VDDVVDDV
OLOH
25.0 *75.0
6 Boot select I Boot mode
VDDVVDDV
ILIH
*3.0 *7.0
EXT
Ant
RFIN
External
Antenna
RF Input
RF IN
External
Antenna RF
Input
%5.085.2
±
=
VV
OUT
)(30 MaxmAI
Out
=
VCC (+3.3V DC power Input)
this is the main DC power supply input pin. It provides voltage to module.
GND
Reference Ground Plane of RGM-3550.
Boot select
set this pin to high for programming flash.
1. 2. 3 . 4. 5. 6
EXT Ant
RF IN