Product overview
The Unicore UFirebird II UC6580 provides satellite positioning for integration into UAVs, robots, vehicle equipment, wearables and handheld devices. Its physical architecture combines radio-frequency and baseband functions in a low-power GNSS system-on-chip, with multipath suppression, interference resistance and high-precision positioning technology. Built on a 22 nm process, it uses a QFN40 package measuring 5 × 5 × 0.85 mm. Support for single-system or combined multi-system positioning gives equipment designers flexibility in how they configure the navigation function.
The supplied chip configurations are the automotive-grade UC6580A and industrial-grade UC6580I, both with Flash. Their operating ranges are -40 °C to +105 °C and -40 °C to +85 °C, respectively. Integration interfaces include two LVTTL UARTs, I²C and a firmware-dependent SPI interface; BDS B1C and NavIC L5 also carry firmware qualifications. GNSS output rates are 1, 5 or 10 Hz. RTK accuracy is specified under open sky, while current consumption is below 40 mA at 3 V. This product is a positioning component for an aircraft system, rather than a supplied flight platform or airframe kit.
Specifications
| Specification | Value & conditions |
|---|---|
| Tracking channels | 96 channels |
| BDS signals | B1I, B1C* + B2aB1C support requires a specific firmware version. |
| GPS signals | L1 + L5 |
| GLONASS signals | G1 |
| Galileo signals | E1 + E5a |
| QZSS signals | L1 + L5 |
| NavIC signals | L5*Specific firmware version required for the asterisked signal. |
| SBAS signals | L1 |
| Single-point positioning accuracy | Horizontal: 1.5 m; elevation: 2.5 mCEP measurement. |
| RTK accuracy | 1 cm + 1 ppm; 2 cm + 1 ppmRMS measurement under open sky. |
| Velocity accuracy | 0.02 m/sRMS measurement. |
| Timing accuracy | 5 ns RMS; 30 ns peak-to-peak over 24 hRMS timing accuracy; peak-to-peak value over 24 h. |
| Cold-start time | Less than 26 sCold start. |
| Hot-start time | Less than 2 sHot start. |
| Current consumption | Less than 40 mAAt 3 V. |
| Receiver sensitivity |
|
| Data update rates | 1 Hz / 5 Hz / 10 HzGNSS data output. |
| Differential data | RTCM V3.X |
| Data formats | NMEA 0183, compatible with BeiDou; Unicore |
| VCC voltage | 1.7–3.6 VVCC supply rail. |
| VIO voltage | 1.7–3.6 VVIO supply rail. |
| Backup voltage | 1.7–3.6 VVbackup supply rail. |
| Package and dimensions | QFN40; 5 × 5 × 0.85 mmUC6580A and UC6580I configurations. |
| Flash | Yes, for both variantsUC6580A and UC6580I configurations. |
| Automotive variant operating temperature | -40 °C to +105 °C; automotive gradeUC6580A configuration. |
| Industrial variant operating temperature | -40 °C to +85 °C; industrial gradeUC6580I configuration. |
| Attainable positioning accuracy | Accuracy can reach 1 cm |
| Integration interfaces | 2 × UART (LVTTL); I²C; 1 × SPI*SPI support requires a specific firmware version. |
| Firmware qualification | Asterisked features are supported by specific firmware versionsAsterisked capabilities require a specific firmware version. |
| Automotive qualification | Automotive-grade chip complies with AEC-Q100Automotive-grade chip configuration. |
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