Document
Data Sheet
SKYTRAQ
VENUS634FLPx 65 Channel Low Power GPS Receiver --- Flash
FEATURES
z z z z z z z z z z z z z GPS receiver in 10mm x 10mm x 1.1mm size Tests 8 million time-frequency hypothesis per sec Open sky cold start 29 second Signal detection better than -161dBm Accuracy 2.5m CEP ~28mA in tracking and navigation mode Multipath detection and suppression Data logging with external SPI serial Flash Supports active or passive antenna 1 SPI interface and 7 GPIO lines Flash-based, firmware customizable LGA44 package with 0.8 pitch Pb free RoHS compliant
The Venus634FLPx is a module-in-a-chip design targeting mobile consumer and cellular handset applications. It offers very low current consumption, high sensitivity, and best in class signal acquisition and time-to-first-fix performance. The Venus634FLPx contains all the necessary components of a complete GPS receiver module, includes GPS RF front-end, GPS baseband signal processor, 0.5ppm TCXO, 32.768kHz RTC crystal, RTC LDO regulator, and passive components. It requires very low external component count and takes up only 100mm2 PCB footprint. Dedicated massive-correlator signal parameter search engine within the baseband enables rapid search of all the available satellites and acquisition of very weak signal. An advanced track engine allows weak signal tracking and positioning in harsh environments such as urban canyons and under deep foliage. Programmable flash-based memory makes it ideal for applications requiring customized firmware.
Figure-1 GPS Receiver based on Venus634FLPx SkyTraq Technology, Inc.
empower mobility, without uncertainty
www.skytraq.com.tw 1
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TECHNICAL SPECIFICATIONS
Receiver Type L1 Frequency GPS C/A code SBAS Capable 51 Channel Acquisitions 14 Channel Tracking Position Velocity Timing 2.5m CEP 0.1m/sec 300ns
Accuracy
Open Sky TTFF
Hot start 1 second Cold start 29 seconds average < 1s Tracking -161dBm 1Hz standard 4G
*1 Altitude < 18,000m or *1 Velocity < 515m/s
Reacquisition Sensitivity Update Rate Dynamics Operational Limits
Datum Interface Baud Rate Protocol
Default WGS-84 UART LVTTL level 4800 / 9600 / 38400 / 115200 software configurable (9600 as default) NMEA-0183 V3.01, GGA, GLL, GSA, GSV, RMC, VTG (default GGA, GSA, GSV, RMC, VTG) SkyTraq Binary 2.8V ~ 3.6V 1.5V ~ 6V ~28mA tracking -40 ~ +85 deg-C -40 ~ +125 deg-C LGA44 10mm x 10mm x 1.1mm, 0.8mm pitch
Main Supply Voltage Backup Voltage Current Consumption Operating Temperature Storage Temperature Package
*1: COCOM limit, either may be exceeded but not both
SkyTraq Technology, Inc.
empower mobility, without uncertainty
www.skytraq.com.tw 2
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PIN-OUT DIAGRAM
Figure-2 Venus634FLPx Pin-Out Diagram
PIN DEFINITION
Pin Number 1 2 3 4 5 6 7 8 Signal Name RSTN VCC33I NC PIO12 GPIO2 GPIO1 LED / GPIO0 GPIO24 Type Input Power Input I/O I/O I/O I/O I/O Description Active LOW reset input, 3.3V LVTTL Main voltage supply input, 2.8V ~ 3.6V Not connected, empty.