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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

Vehicle Navigation Vehicle Navigation

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)2

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

Positioning Error of INS only< 2 % of the distance traveled without GNSS signals
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 68% at 30 m/s for dynamic operation，open sky

3 Open sky, continuous tracking




Download

UM621A_Product_Brief_En
31/01/2024
VIEW
UM621 Series_Hardware Reference Design_EN_R2.2
30/08/2024
VIEW
UM621 Series Modules_User Manual_EN_R2.2
30/08/2024
VIEW
UFirebird II Protocol Specification
27/06/2024
VIEW
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