Related Manuals for unicore UM680A
Summary of Contents for unicore UM680A
- Page 1 用户手册 INSTALLATION AND OPERATION USER MANUAL WWW.UNICORE.COM UM680A Automotive Grade GNSS High Precision RTK Positioning Module Copyright© 2009-2024, Unicore Communications, Inc. Data subject to change without notice.
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Page 2: Revision History
Information, such as product specifications, descriptions, features and user guide in this manual, are subject to change by Unicore at any time without prior notice, which may not be completely consistent with such information of the specific product you... - Page 3 Should you purchase our product and encounter any inconsistency, please contact us or our local authorized distributor for the most up-to-date version of this manual along with any addenda or corrigenda.
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Page 4: Target Readers
UM680A User Manual Foreword This document describes the information of the hardware, package, specification and the use of Unicore UM680A module. Target Readers This document applies to technicians who are familiar with GNSS receivers. -
Page 5: Table Of Contents
Contents Introduction ....................1 Key Specifications ......................2 Block Diagram ........................4 Hardware ....................6 Pin Definition ........................6 Electrical Specifications ....................9 2.2.1 Absolute Maximum Ratings ..................9 2.2.2 Operational Conditions ....................9 Dimensions ........................10 Hardware Design ..................12 Recommended Minimal Design ................... -
Page 6: Introduction
UM680A supports GPS/BeiDou/GLONASS /Galileo/QZSS/NavIC L1+L5 frequencies, providing centimeter-level RTK positioning. It has two sub-models, UM680A-12 and UM680A-13, of which UM680A-13 supports up to 105 ° C. See Table 1-1 for more information. Figure 1-1 UM680A High Precision Positioning Module ... -
Page 7: Key Specifications
Key Specifications Table 1-1 Technical Specifications UM680A-12 UM680A-13 Products Multi-system dual-frequency high Multi-system dual-frequency high precision RTK positioning module precision RTK positioning module Illustration Dimension 22.0 mm × 17.0 mm × 2.6 mm 22.0 mm × 17.0 mm × 2.6 mm... - Page 8 UM680A User Manual UM680A-12 UM680A-13 Products Multi-system dual-frequency high Multi-system dual-frequency high precision RTK positioning module precision RTK positioning module ● ● × 1 × 1 EVENT × 1 × 1 ● ● RESET_N ● ● RTK_STAT GNSS Antenna × 1 ×...
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Page 9: Block Diagram
UFirebird II chip. 2. UFirebird II SoC (UC6580A) UFirebird II is the new generation RF-baseband and high-precision algorithm integrated GNSS SoC developed by Unicore. It adopts 22 nm technology and low power Introduction UC-00-M61 EN R1.0... - Page 10 GNSS joint positioning. The chip is especially suitable for the application scenarios which are sensitive to power and size. 3. Interfaces UM680A has interfaces such as UART, I , SPI , PPS, EVENT, RTK_STAT and RESET_N. There are two UARTs. UART1 is the master serial port, supporting data transmission and firmware upgrade, and the I/O signal type is LVTTL.
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Page 11: Hardware
2 Hardware Pin Definition See Figure 2-1 for the definition of UM680A-12/UM680A-13. TXD1/SPIS_MISO TXD2 RXD1/SPIS_MOSI RXD2 SDA/SPIS_CSN SCL/SPIS_CLK D_SEL Top View RESET_N RTK_STAT EVENT Figure 2-1 UM680A-12/UM680A-13 Pin Definition Table 2-1 UM680A-12/UM680A-13 Pin Definition Description — Ground RF_IN GNSS antenna signal input —... - Page 12 UM680A User Manual Description — Reserved; leave floating — Reserved; leave floating — Reserved; leave floating — Reserved; leave floating — Ground — Reserved; leave floating — Ground — Reserved; leave floating — Reserved; leave floating — Reserved; leave floating —...
- Page 13 Description When the main power supply VCC is cut off, V_BCKP supplies power to RTC and relevant register. Supply voltage: 2.0 V to 3.6 V, and the working current is less than 10 μA at V_BCKP 25 ° C. If you do not use the hot start function, connect V_BCKP to VCC or a standalone power source.
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Page 14: Electrical Specifications
UM680A User Manual Electrical Specifications 2.2.1 Absolute Maximum Ratings Table 2-2 Absolute Maximum Ratings Parameter Symbol Min. Max. Unit Remark Power Supply -0.2 Backup Battery V_BCKP -0.2 Digital Pin Voltage -0.2 Antenna RF Input Power RF_IN UM680A-12 ° C Storage Temperature +105 °... -
Page 15: Dimensions
Dimensions Table 2-4 Dimensions Symbol Min. (mm) Typ. (mm) Max. (mm) 21.80 22.00 22.50 16.80 17.00 17.50 2.40 2.60 2.80 3.75 3.85 3.95 0.95 1.05 1.15 1.80 1.90 2.00 1.00 1.10 1.20 0.70 0.80 0.90 1.40 1.50 1.60 3.55 3.65 3.75 3.15 3.25... - Page 16 UM680A User Manual Figure 2-2 UM680A Mechanical Dimensions UC-00-M61 EN R1.0 Hardware...
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Page 17: Hardware Design
R1: 10 kΩ resistor is recommended; pull up Antenna Feed Design UM680A supports feeding the antennal from the outside of the module rather than from the inside. It is recommended to use devices with high power and that can withstand high voltage. - Page 18 UM680A User Manual ANT_BIAS RF_IN VCC_RF Figure 3-2 UM680A External Antenna Feed Reference Circuit Remarks: L1: feed inductor, 68nH RF inductor in 0603 package is recommended; C1: decoupling capacitor, it is recommended to connect two capacitors of 100nF/100pF in parallel;...
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Page 19: Power-On And Power-Off
Power-on and Power-off The VCC initial level when power-on should be less than 0.4 V. The VCC ramp when power-on should be monotonic, without plateaus. The voltages of undershoot and ringing should be within 5% VCC. VCC power-on waveform: The time interval from 10% rising to 90% must be within ... -
Page 20: Grounding And Heat Dissipation
UM680A User Manual Grounding and Heat Dissipation Grounding and heat dissipation pad Figure 3-3 Grounding and Heat Dissipation Pad The 48 pads in the rectangle in Figure 3-3 are for grounding and heat dissipation. In the PCB design, it is recommended to connect them to a large sized ground to strengthen the heat dissipation. -
Page 21: Recommended Pcb Package Design
Recommended PCB Package Design See the following figure for the recommended PCB package design of the module UM680A. Figure 3-4 Recommended PCB Package Design Remark: For the convenience of testing, the soldering pads of the pins are designed long, exceeding the module border much more. For example: ... -
Page 22: Production Requirement
UM680A User Manual 4 Production Requirement Clean Do NOT use alcohol or other organic solvents to clean the module, or it may lead to flux residues flooding into the shielding shell, causing mildew and other problems. Soldering Recommended soldering temperature curve is as follows:... -
Page 23: Stencil Thickness
Cooling Stage Cooling slope: Max. 4 ° C/s In order to prevent falling off during soldering of the module, do not solder it on the back of the board during design, and better not go through soldering cycle twice. The setting of soldering temperature depends on many factors of the factory, such as board type, solder paste type, solder paste thickness, etc. -
Page 24: Packaging
UM680A User Manual 5 Packaging Label Description Figure 5-1 Label Description Ordering Information Product Model Sub-model Description Automotive grade; dual-frequency RTK positioning module; operating temperature: -40 ° C to +85 ° C; supporting firmware upgrade; UM680A 22 mm x 17 mm; 250 pieces/reel Automotive grade;... -
Page 25: Product Packaging
Product Packaging The UM680A module uses carrier tape and reel (suitable for mainstream surface mount devices), packaged in vacuum-sealed aluminum foil antistatic bags, with a desiccant inside to prevent moisture. When using reflow soldering process to solder modules, please strictly comply with IPC standard to conduct humidity control. As packaging materials such as the carrier tape can only withstand the temperature of 55 °... - Page 26 All dimension designs are in accordance with EIA-481-C-2003. The maximum bending degree of the carrier tape within the length of 250 mm should not exceed 1 mm (see the figure below). 250mm Figure 5-3 UM680A Reel Package Diagram UC-00-M61 EN R1.0 Packaging...
- Page 27 30% circle is lavender (see Figure 5-5), you must bake the module until it turns to blue. The UM680A is rated at MSL level 3. Refer to the relevant IPC/JEDEC J-STD-033 standards for the package and operation requirements. Users may access to the website www.jedec.org to get more information.
- Page 28 和芯星通科技（北京）有限公司 Unicore Communications, Inc. 北京市海淀区丰贤东路 7 号北斗星通大厦三层 F3, No.7, Fengxian East Road, Haidian, Beijing, P.R.China, 100094 www.unicore.com Phone: 86-10-69939800 Fax: 86-10-69939888 info@unicorecomm.com www.unicore.com...
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