Build on high performance, low-power SiRF star III chipset
Extreme fast TTFF (the time to first fix) at low signal level
20 ¡Vchannel GPS receiver
SBAS (WAAS, EGNOS Euro Geostationary Navigation Overlay Service) support
Full navigation accuracy provided by Standard Positioning Service (SPS)
Reception frequency 1575.42MHz
CPU (ARM7TDMI) with 4Mb of internally packaged Flash memory
Advanced Power Management. (The mode of low power management when signal levels areless than 30dB Hz. Update rates arelimited from 10 seconds to 255 seconds.)
2 UARTS, high speed serial bus
Support standard NMEA 0183 protocol (Version. 3.0 GGA, GSA, GSV, RMC, VTG)
Internal RTC (Real Time Clock)
Shielding case including
Driver / Manual / Specification
Performance
Acquisition time (open sky and stationary)
Reacquisition
Average 0.1 sec
Hot start
< Average 1 seconds
Warm start
< Average 38 seconds
Cold start
< Average 42 seconds
Accuracy
Position
10 meters RMS without SA
Velocity
0.1 meters/second, without SA
Time
1 microsecond synchronized to GPS time
Datum
WGS-84 (or by demand)
Sensitivity
Tracking
-159 dBm (average)
Dynamics
Altitude
< 18000 meter
Velocity
< 515 m/sec
Acceleration
< 4 g
Frequency
L1, 1575.42MHz C/A code
Power Consumption
Under 65mA fully active
Power & Interface characteristics
Serial I/O port
High speed UART-TTL signal
I/O Protocol
NMEA 0183 (default)
Baud rate
Default baud rate for SSIII NMEA is 4800 baud. The default serial port settings for SiRF binary mode is 57600, N, 8, 1.
I/O Connector
2- pin SMD type
Physical characteristics
Dimensions
15 ( L ) X 13 ( W ) X 2.2 ( H ) mm
Weight
3.5g
Environment conditions
Operating temperature
-20¢XC ~ +80¢XC
Storage temperature
-20¢XC ~ +85¢XC
Operating humidity
5% ~ 95% RH, Non condensing
Assignment of Connector
PIN
Description
1
RXB
Serial Data input port B for user's application(not currently used).
2
TXB
Serial Data output port B for user's application(not currently used).
3
PPS
1PPS Time mark output
4
TXA
Serial Data output port A
5
RXA
Serial Data input port A
6
NC
7
CPIO0
General purpose I/O
8
GPIO1
General purpose I/O
9
RF_PWR
RF_PWR ON/OFF
10
ON_OFF
Edge triggered soft on /off request. Should only be used to wake up chip (must be low)
11
V_RTC
Battery backup input. 2.8V to 3.3V, 10uA typical
12
VCC
+ 3.0V+/-0.15V power input (System Power)
13
GPIO13
General purpose I/O
14
GPIO14
General purpose I/O
15
GPIO15
LED indicate for GPS status
16
BOOT_SET
Reserved for re-programming flash (pull high)
17
VCC_RF
RF POWER 2.85V t
18
GND
Power GND
19
RF_IN
Antenna input
20
GND
Power GND
21
GND
Power GND
22
GND
Power GND
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