[Chip solution]：AT6558R
[Communication interface]：UART/GPIO
[Operating voltage]：2.7-3.6V
[Communication protocol]：NMEA0183 V4.1 and previous versions
[Product size]：12.2*16.0*2.4mm
[Introduction]：E108-GN03S is a high-performance, highly integrated, low-power, low-cost multi-mode satellite positioning and navigation module based on the AT6558R solution, supporting BDS/GPS/GLONASS, small size, low power consumption, can be used in GNSS positioning and navigation applications such as vehicle navigation, smart wearables, and drones, and provides software and hardware interfaces compatible with other module manufacturers, greatly reducing the user's development cycle. It also supports multiple ways to connect to other peripherals, supports UART, GPIO interfaces, if you need I2C, SPI interfaces, please contact customer service for customization.
| Main parameters | Describe | Remark |
| Baud rate (bps) | 4800~115200 | Default 9600 |
| data bits | 8bit | - |
| Stop bit | 1 | - |
| Communication interface | UART | - |
| Packaging method | SMD type | - |
| Product size | 12.2*16.0*2.4mm | ±0.2mm |
| Antenna interface | stamp hole | - |
| Communication protocol | Support NMEA0183 V4.1 and previous versions | - |
| Location update rate | 1Hz | The maximum positioning update frequency can reach 10Hz |
| Supported positioning systems | BDS/GPS/GLONASS | BDS B1、GPS L1、GLONASS L1 |
| Product weight | 0.9g | ±0.1g |
| Category | Indicator items | Typical value | Unit |
| Positioning time (test condition 1) | cold start | ≤32 | s |
| hot start | ≤1 | s | |
| recapture | ≤1 | s | |
| Sensitivity (test condition 2) | cold start | -148 | dBm |
| hot start | -156 | dBm | |
| recapture | -160 | dBm | |
| track | -162 | dBm | |
| Accuracy (test condition 3) | Horizontal positioning accuracy | <2.5 | m |
| Speed positioning accuracy | <0.1 | m/s | |
| Timing accuracy | 30 | ns | |
| Power consumption (test condition 4) | E108-GN03 capture current | 25 | mA |
| E108-GN03S capture current | 26 | ||
| E108-GN03D capture current | twenty four | ||
| E108-GN03 tracking current | 25 | mA | |
| E108-GN03S tracking current | 26 | ||
| E108-GN03D tracking current | twenty four | ||
| E108-GN03 sleep current | 64 | uA | |
| E108-GN03S sleep current | 57 | ||
| E108-GN03D sleep current | 0.3 |
| Main parameters | Performance | Remark | ||
| Minimum value | Typical value | Maximum value | ||
| Working voltage (V) | 2.7 | 3.3 | 3.6 | Exceeding 3.6V may burn the module |
| Communication level (V) | 3.3 | Using 5V TTL risks burning out | ||
| Working temperature (℃) | -40 | - | 85 | Industrial grade design |
| humidity | 5% | - | -95%RH | No condensation |
Note: The above results are for GPS/Beidou dual-mode working mode.
[Test condition 1]: The number of receiving satellites is greater than 6, the signal strength of all satellites is -130dBm, the average value is taken after 10 tests, and the positioning error is less than 10 meters.
[Test condition 2]: External LNA noise coefficient is 0.8, the number of receiving satellites is greater than 6, and the received signal strength value is locked within five minutes or without losing lock.
[Test Condition 3]: Open and unobstructed environment, 24 hours of continuous power-on test, 50% CEP.
[Test Condition 4]: The number of receiving satellites is greater than 6, and the signal strength of all satellites is -130dBm.
