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UM621A

UM621A

Automotive Grade Dual-frequency Multi-GNSS Integrated Positioning Module

UM621A is a GNSS dual-frequency + MEMS integrated navigation module developed by Unicore Communi-cations for the automotive market. Based on the proprietary multi-system dual-frequency high-performance SoC-UC6580A, and equipped with a 6-axis MEMS device, the module supports multi-system dual-frequency joint positioning or single-system standalone positioning, and can directly output GNSS+MEMS integrated positioning results, which ensures the continuity of positioning even in tunnels or underground parking lots.


Ordering Information

Supply at multiples of 500 pieces


um621a

APPLICATIONS

Product Characteristics

  • Automotive grade dual-frequency GNSS+MEMS integrated navigation and positioning module 

  • Supports GPS L1 C/A, L5; BDS B1I, B1C*, B2a; GLONASS G1; Galileo E1, E5a; NavIC L5*; QZSS and SBAS

  • Supports multi-system dual-frequency positioning, multi-system single-frequency positioning or single-system standalone positioning

  • Built-in MEMS to output integrated positioning results with a single module

  • Supports odometer pulse input

  • Supports the output of integrated positioning results and GNSS-only positioning results through one serial port

  • 100% continuous navigation even in tunnels or underground parking lots

  • GNSS chip qualified according to AEC-Q100; production process conforms to IATF16949


Technical Specifications

Performance Specifications


Channel
96 channels, based on UFirebirdII
FrequencyGPS L1C/A, L5
BDS B1I, B1C*, B2a
GLONASS G1
Galileo E1, E5a
NavIC L5*
QZSS L1, L5
SBAS L1C/A

Positioning Mode

Single-System Standalone Positioning

Multi-System Joint Positioning

Time to First Fix (TTFF)1Cold Start: < 26 s
Hot Start: < 2 s
Re-acquisition: < 2 s
Positioning Accuracy (CEP)1

Horizontal:1.5 m (Dual-frequency quad-system, open sky)

Velocity Accuracy(RMS)30.05 m/s (GNSS)
1PPS20ns
SensitivityGNSS
Tracking           -162 dBm
Cold Start        -148 dBm
Hot Start          -158 dBm
Reacquisition   -160 dBm
GNSS Data Update Rate
1Hz / 5 Hz* / 10 Hz*
INS Data Update Rate
50 / 100 Hz
Data Format  NMEA 0183, Unicore



Physical Specifications

Dimensions

16.0 x 12.2 x 2.4 mm

Package

24 pin SMD

Temperature

Operating -40 °C ~ +85 °C

Storage -40 °C ~ +85 °C


Electrical Specifications

Voltage2.7V ~ 3.6 V DC
LNA2.7V ~ 3.3 V, <100 mA
Power Consumption3330 mW


Functional Ports

2 × UART (LVTTL)
1 × I2C*
1 × SPI*
 1 × SPEED
1 × FWD
1 × 1PPS (LVTTL)


Functional Characteristics

Passive Antenna, Active Antenna
AGNSS*

Note: Items marked with * are only supported by specific firmware.

1 Open sky

2 Typical value, < 30 m/s open sky

3 68% at 30 m/s for dynamic operation,open sky

4 Open sky, continuous tracking




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