EB 3531/M91供应GPS模块

Product Features: 9 SiRF star III high performance GPS Chipset 9 Very high sensitivity (Tracking Sensitivity: -159 dBm) 9 Extremely fast TTFF (Time To First Fix) at low signal level 9 Two serial ports 9 4Mb flash 9 Built-in LNA 9 Compact size (15mm * 13mm * 2.2mm) suitable for space-sensitive application 9 One size component, easy to mount on another PCB board 9 Support NMEA 0183 and SiRF binary protocol Pin NO. Pin Name I/O Remark 1. RXB I Serial input (default null) 2. TXB O Serial output (default null) 3. TIMEMARK I/O One pulse per second. 4. TXA O Serial output (default NMEA) 5. RXA I Serial input (default NMEA) 6. NC NC 7. GPIO0 I/O General purpose I/O 8. GPIO1 I/O General purpose I/O 9. RF_PWR CTR RF Power ON/OFF. 10. ON_OFF I Edge triggered soft on/off request. It must be low for normal application. 11. VBAT PWR Backup battery supply voltage 12. VCC PWR Main power supply to the engine board. 13. GPIO13 I/O General purpose I/O 14. GPIO14 I/O General purpose I/O 15. GPIO15 O GPS status output. 16. BOOTSEL I/O Set this pin to high for programming flash. 17. VCC_RF PWR Regulated RF power output. 18. GND G Ground. 19. RF IN RF GPS antenna input. 20. GND G Ground. 21. GND G Ground. 22. GND G Ground.