GM-820F
13X15 GPS Module
GENERAL DESCRIPTION
GM-820F GPS module is a highly sensitivity, ultra compact single chip for GPS application. It includes RF receiver, a fully-featured baseband processor, a Flash memory and a power management unit.
The RF receiver employs a single conversion digital low-IF architecture, the high level integration leaves only few off-chip matching and decoupling components really minimize the system cost.
The baseband processor is controlled by adaptive signal processing and navigation firmware optimized for execution on low power microprocessor. Sophisticated adaptive control algorithms provide optimal signal acquisition/tracking strategy.
Feature
- GPS L1 C/A code
- High sensitivity of -160dBm in tracking & -144dBm in acquisition
- RF receiver of noise figure at 2.5dB
- Build in power-on-reset and calibration circuits
- Active antenna sensor to automatically switching
- Assisted/Autonomous operation
- Fast TTFF in all modes ( a typical outdoor )
♦ hot-start in 1s
♦ warm-start in 32s
♦ cold-start in 34s - Up to 60,000 simultaneous search windows
- Support 60 channels (48 acquisition & 12 tracking channels)
- DGPS & SBAS (WAAS/EGNOS/MSAS) capable
- Support standard NMEA-0183 & Mstar binary protocol
- TCXO & RTC integrated
- Integrate a high-performance MIPS M4K CPU
- Integrate a 512 KB NOR flash memory
- Frequency-locking between -40 °C ~ 125 °C
- Easy to integrate
♦ Flexible RF interface – compatible with various frequency plan
♦ Dual UART data interface
♦ I2C & SPI interface
♦ Numerous GPIO
♦ Wheel trick , PWM and ADC input - Operate in 1.2V/3.0V (core/IO), integrate LDO
- Track/Acquire power consumption will be 30~33mA (GPS module)
- Battery backed RAM & RTC and direct connection
- 0.18um CMOS for RF and 0.11umBaseband
Start Now™ technology
Mstar Start Now™ AGPS for GSM/3GPP & CDMA for extended ephemeris and fast TTFFs (mobile phone & tracker)
Mstar Start Now™ MGAN™-LTE (long term ephemeris) for extended 5~7days ephemeris and fast TTFFs (PND & tracker/logger)
Advanced power management for trickling and position-fix™ power management
SDK tool by OEM customization API to save external mcu of the system
Application
- PND
- Mobile Phone
- UMPC
- Tracker & Logger units
- MP3/MP4 GPS
- GPS Watch
- DSC GPS and related
- Marine & timing navigation
Specifications
| 13X15 GPS Module GM-820F Specifications | |
| GPS Receiver | |
| Chipset | Mstar MSB2122 |
| Frequency | L1, 1575.42 MHz |
| Code | C/A Code |
| Protocol | NMEA 0183 Default : GGA,GSA,GSV,RMC Support : VTG,GLL,ZDA) Mstar binary and NMEA Command |
| Available Baud Rate | 4,800 to 115,200 bps adjustable |
| Time | 1 PPS Pulse, pulse duration 1 mini second. Time reference at the pulse positive edge. Synchronized to GPS time, ±1 μs. |
| Channels | Support 60 channels (48 acquisition & 12 tracking channels) |
| Sensitivity | Tracking -160dBm Acquisition -144dBm |
| Acquisition Time(Open Sky) | Hot start: 1 sec, average Warm start: 32 sec, average Cold start: 34 sec, average |
| Reacquisition | 0.1 second, average |
| Accuracy | Position: <10 meters, 2D RMS <5 meters, 2D RMS, WAAS corrected 1-5 meters, DGPS corrected Time 1 microsecond synchronized to GPS time |
| Maximum Altitude | Altitude < 18,000 meters (60,000 feet) |
| Maximum Velocity | < 515 meters/sec (1000 knots) |
| Maximum Acceleration | < 4 G Jerk 20 meters/sec max |
| DGPS | WAAS, EGNOS, MSAS |
| Datum | Default WGS-84 |
| Physical Characteristic | |
| Type | 22-pin stamp holes |
| Dimensions | 13. mm x 15 mm x 2.7 mm |
| Physical Characteristic | |
| Power Supply | Main power input 3.2 ~ 5.0 VDC |
| Power consumption | Track/Acquire power consumption will be 30~33mA (GPS module) |
| Environmental Range | |
| Humidity Range | 5% to 95% non-condensing |
| Operation Temperature | -40 °C ~ 85 °C |
| Storage Temperature | -40 °C ~ 125 °C |
Downloads
| 13X15 GPS Module GM-820F Downloads | |
| GM-820F_DataSheet.pdf | PDF, GM-820F DataSheet |