SkyLab SKM53 GPS module for microcontroller applications.
SKM53 Skylab module (also identified as SkyNav by the manufacturer) is designed for applications of global positioning system GPS. The device is based on MediaTek MT3329 circuit and has an integrated GPS antenna module.
With a receiver sensitivity of -165 dBm antenna, the SKM53 module allows coverage in difficult GPS location such as urban areas or dense foliage environments, where less sensitivity systems typically have difficulties in positioning functions and navigation. The SKM53 module has 22 channels and 66 tracking channels acquisition and includes support for WAAS/EGNOS/MSAS/GAGAN systems. Its accuracy is about 3 meters.
For connection to microcontrollers, the SKM53 module has an asynchronous serial port with a 6-pin connector, power of 3.3 volts @ 50 m. and TTL level signals, using the NMEA-0183 protocol, and operating at a default speed of 9600 bps.
The NMEA protocol operates through the exchange of ASCII strings from the GPS module and the microcontroller, making extremely simple interfacing with any system. The SKM53 module provides navigational information, which allows to determine the latitude, longitude, altitude and speed.
Applications include personal portable navigation systems (PND), tracking systems and vehicle navigation, and location-based services (LBS) among many others.
Its dimensions are 30 mm x
20 mm x 8.5 mm. It weighs 9 grams.
Connection of SKM53 to Bolt 18F2550 system
Internet links for protocol NMEA 0183:
National Marine Electronics Association: http://www.nmea.org/content/nmea_standards/nmea_0183_v_410.asp
NMEA-0183 standard: http://www.gpsinformation.org/dale/nmea.htm