RXM-GPS-F4-T Linx Technologies, RXM-GPS-F4-T Datasheet - Page 14

• Manufacturer Part Number: RXM-GPS-F4-T
• Description: GPS Modules F4 Series GPS Recvr Module Tape and Reel
• Manufacturer: Linx Technologies

Specifications of RXM-GPS-F4-T

• Rohs: yes
• Frequency Band: 1575.42 MHz
• Number Of Channels: 48
• Time To First Fix (cold Start): 32 s
• Acquisition Sensitivity: - 159.5 dBm
• Horizontal Position Accuracy: 3 m
• Operating Supply Voltage: 1.8 V
• Operating Supply Current: 56 mA
• Interface Type: Serial
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Dimensions: 15 mm x 13 mm x 2.2 mm
• Minimum Operating Temperature: - 30 C

Module Power-up Sequence
The module requires a specifi c sequence to power up and begin normal
operation. When power is fi rst applied the module enters a “ready-to-start”
state while the Real Time Clock (RTC) starts up and settles. It awaits a
pulse on the ON_OFF line to enter Full Power Mode.
The RTC start time is variable, so the host needs to either monitor the
RFPWRUP line for a high pulse or wait for at least one second before
pulsing the ON_OFF line. An example fl owchart is shown in Figure 8 below.
Figure 8: Circuit Using the F4 Series Module with a Passive Antenna
No
Wait for ≥1 second
Pull ON_OFF high
Full Power Mode
The module is in
Power on the
second timer
for ≥100ms
Data output
module?
expired?
module
from the
–
Start
End
10
1
–
Yes
No
Yes