W2SG0084i-T Wi2Wi, W2SG0084i-T Datasheet - Page 9

• Manufacturer Part Number: W2SG0084i-T
• Description: GPS Modules GPS SiRFstar IV Module SMD
• Manufacturer: Wi2Wi

Specifications of W2SG0084i-T

• Rohs: yes
• Frequency Band: 1.575 GHz
• Number Of Channels: 48
• Time To First Fix (cold Start): 45 s
• Acquisition Sensitivity: - 148 dBm
• Horizontal Position Accuracy: 5 m
• Operating Supply Voltage: 1.8 V, 3.3 V
• Operating Supply Current: 50 ma
• Interface Type: UART
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Dimensions: 11.2 mm x 12 mm x 2.5 mm
• Minimum Operating Temperature: - 40 C

3.2
3.2.1
The TTL UART Interface (Pins 12, 13) has a bit rate range of 1.2kbps to 115.2 kbps, though defaulted
at 4800 BAUD. Protocol options for the W2SG0084i are NMEA and SiRFBINARY™ (OSP). Default
setting for the UART Interface is 4800 BAUD/NMEA Protocol.
3.2.2 Wake Up Pin
The Wake up pin functions as follows: A short pulse on the WAKEUP output line indicates to
a host that the W2SG0084i is ready to accept an ON_OFF pulse to start normal operation.
When the module is in standby or hibernate mode, the WAKEUP output goes low and when
the module is in Full power mode the WAKEUP output goes high.
3.2.3 Time Mark
The Time Mark pin [5] functions as follows: the Time Mark output provides a one pulse-per-
second (1pps) signal to the customer’s application processor. When the receiver provides a
Interfaces
Host UART Interface
Figure 3: Timing Diagram of initial application of power supply
Copyright © 2011 Wi2Wi, Inc.
Wi2Wi, Inc. Doc No. ALT-PDT-DOC Rev.1.61
Initial Power-On sequence
Datasheet, GPS Module– W2SG0084i
Dated: November 11, 2011
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