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UM220-IV M0 User Manual

12

4.5

Reset

If the reset pin nRESET of UM220-IV M0 module needs to be used, the following timing

requirements must be met between the nRESET and the power supply VCC. During normal

operation of the module, pulling down the nRESET pin over 5 ms can also reset the module.

VCC

nRESET

> 5ms

Figure 4-3 UM220-IV M0 Reset Requirement

4.6

Serial Port

UM220-IV M0 has one LVTTL serial port, for PC connection, please use a RS232 voltage

level converter.

UM220-IV

M0

PC

RS232

UART1

RS232 1

Figure 4-4 Connect COM to PC

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Содержание UM220-IV M0

Страница 1: ...INSTALLATION AND OPERATION USER MANUAL WWW UNICORECOMM COM Copyright 2009 2023 Unicore Communications Inc Data subject to change without notice UM220 IV M0 Industry Grade Multi GNSS Positioning Module...

Страница 2: ...eakage power Nov 2021 R2 3 Nov 2021 R2 4 If hot start is not used connect V_BCKP to VCC Revise the VSWR in section 1 2 Nov 2022 R2 5 Optimize the description of antenna power supply Add Chapter 4 2 Po...

Страница 3: ...ed to be true and correct at the time of its publication or revision This manual does not represent and in any case shall not be construed as a commitments or warranty on the part of Unicore with resp...

Страница 4: ...ture of the Document This document includes the following Introduction Briefly explaining the functions performances and installing of the product Installation Containing the list of the product packa...

Страница 5: ...l Specifications 6 3 2 Operation Condition 6 3 3 Dimensions 7 3 4 Pin Definition Top View 8 4 Hardware Design 9 4 1 Design in Considerations 9 4 2 Power Supply Requirements 10 4 2 1 Main Supply VCC 10...

Страница 6: ...m positioning UM220 IV M0 is compact in size and uses SMT pads to support fully automatic integration of standard discharge and reflow soldering especially suitable for low cost and low power consumpt...

Страница 7: ...rage Temperature 45 90 RoHS Compliant Input output Data Interface UART 1 UART LVTTL Baud rate 4800 115200bps GNSS Performance Frequency BDS B1 1561 098MHz GPS L1 1575 42MHz TTFF Cold Start 28s Hot Sta...

Страница 8: ...S UM220 IV M0 LNA Figure 1 2 Structure Chart UART UM220 IV M0 module supports data transfer and firmware upgrade the signal input output level is LVTTL The default baud rate varies according to the ve...

Страница 9: ...n antistatic wrist strap and connect the other end to a metal frame to play a role in anti static Hold the edge of the module not in direct contact with the components Please check carefully whether t...

Страница 10: ...ding the workbench Step 2 Open the UM220 IV M0 evaluation kit Step 3 Select the GNSS antenna with appropriate gain fix it in the non block area using the appropriate cable to connect the antenna to UM...

Страница 11: ...l 2 Level 3 TBD 3 2 Operation Condition Item Pin Min Typical Value Max Unit Condition Power Supply VCC Vcc 3 0 3 3 3 6 V Peak Current Iccp 53 mA Vcc 3 0 V Tracking Average Current IACQ 29 30 31 mA Vcc...

Страница 12: ...Dimensions Symbol Min mm Typical Value mm Max mm A 9 6 10 1 10 7 B 9 55 9 7 9 85 C 1 9 2 0 2 1 D 0 55 0 65 0 95 E 1 0 1 1 1 2 F 0 5 0 6 0 7 G 0 3 0 4 0 5 H 0 9 1 0 1 1 K 0 6 0 7 0 8 M 0 7 0 8 0 9 Fig...

Страница 13: ...serve 6 V_BCKP I 1 65V 3 6V Voltage for RTC If you do not use the hot start function connect V_BCKP to VCC Do NOT connect it to ground or leave it floating 7 VCC_IO I 3 0V 3 6V GPIO power supply 8 VCC...

Страница 14: ...y Try to place LDO close to the module in layout Widen the power circuit or use copper pour surface to transmit current Avoid walking through any high power or high inductance devices such as a magnet...

Страница 15: ...otes The V_BCKP initial level when power on should be less than 0 4 V The V_BCKP ramp when power on should be monotonic without plateaus The voltages of undershoot and ringing should be within 5 V_BCK...

Страница 16: ...a feed inductor It s recommended to use an independent power as V_BIAS to supply the antenna If the antenna power supply and the module s main supply VCC use the same power rail the ESD surge and ove...

Страница 17: ...T and the power supply VCC During normal operation of the module pulling down the nRESET pin over 5 ms can also reset the module VCC nRESET 5ms Figure 4 3 UM220 IV M0 Reset Requirement 4 6 Serial Port...

Страница 18: ...ay lead to module damage 6 Package 6 1 Product Label Description 6 2 Package Description The UM220 IV M0 modules are packaged in vacuum sealed aluminum foil anti static bags with desiccant and moistur...

Страница 19: ...m Carrier Tape Space between 20mm Check the humidity indicator card before soldering The 30 indication is blue under normal conditions as shown in Figure 6 2 Bake modules firstly before soldering if t...

Страница 20: ...vice falling off the module should be placed on the top of the main board during welding Reflow soldering temperature curve is recommended as shown in Figure 8 1 below M705 GRN360 is recommended for s...

Страница 21: ...Unicore Communications Inc 7 F3 No 7 Fengxian East Road Haidian Beijing P R China 100094 www unicorecomm com Phone 86 10 69939800 Fax 86 10 69939888 info unicorecomm com www unicorecomm com...

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