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SE868Kx-Ax Family Product User Guide

1VV0301201 Rev. 5

Page 50 of 83

2021-07-15

Not Subject to NDA

9.5.3.

Output Signals

9.5.3.1.

1PPS

1PPS is a one pulse per output second signal. Its default characteristics are:

•

Pulse duration: 100 ms

•

Active: during 3D navigation.

The pulse availability and duration can be configured via the $PMTK285 command.

Options for availability are:

•

Disable

•

After 1st fix

•

3D Fix only

•

2D/3D Fix only

•

Always.

NMEA output (timestamp) can be configured to have a fixed latency behind the 1PPS
pulse of 460 to 485 ms via the $PMTK255 command. Default is variable latency.

These configurations will not be preserved across a power cycle or reset.

1PPS is disabled if the fix rate > 1 Hz.

Variation is

≈

30 ns (1

Figure 18: 1PPS NMEA Synchronization

Содержание SE868-A

Страница 1: ...SE868Kx Ax Family Product User Guide 1VV0301201 Rev 5 2021 07 15 Telit Technical Documentation...

Страница 2: ...SE868Kx Ax Family Product User Guide 1VV0301201 Rev 5 Page 2 of 83 2021 07 15 Not Subject to NDA APPLICABILITY TABLE PRODUCTS SE868 A SE868 AS SE868K3 A SE868K3 AL SE868K7 A SE868K7 AL...

Страница 3: ...duct Variants 12 2 3 1 Multi Constellation Modules SE868 A and SE868K3 Ax Features 12 2 3 2 GPS Only Modules SE868 AS and SE868K7 Ax Features 12 2 3 2 1 ROM Features SE868 AS and SE868K7 Ax modules 13...

Страница 4: ...4 14 1 Full Power Continuous Mode 24 4 14 2 Backup Mode Perpetual SE868 A and SE868K3 Ax only 25 4 14 3 Standby Modes 25 4 14 4 GLP Mode SE868 A and SE868K3 Ax only 25 4 14 5 Periodic Modes SE868 A an...

Страница 5: ...er Supply 45 9 4 1 VCC 45 9 4 2 VBATT 45 9 4 3 DC Power Requirements 46 9 4 4 DC Power Consumption SE868 A 46 9 4 5 DC Power Consumption SE868 AS 47 9 4 6 DC Power Consumption SE868K3 Ax 47 9 4 7 DC P...

Страница 6: ...PACKAGING AND HANDLING 62 Product Marking and Serialization 62 Product Packaging 63 Moisture Sensitivity 65 ESD Sensitivity 67 Assembly Considerations 67 Washing Considerations 67 Reflow 68 Safety 69...

Страница 7: ...201 Rev 5 Page 7 of 83 2021 07 15 Not Subject to NDA 17 2 2 Copyrighted Materials 79 17 2 3 High Risk Materials 79 17 2 4 Trademarks 79 17 2 5 Third Party Rights 80 17 2 6 Waiver of Liability 80 Safet...

Страница 8: ...tions using the Telit SE868Kx Ax family Contact Information Support For general contact technical support services technical questions and report of documentation errors contact Telit Technical Suppor...

Страница 9: ...s advice and suggestions that may be useful when integrating the module Electro static Discharge Notifies the user to take proper grounding precautions before handling the product Table 1 Symbol Conve...

Страница 10: ...Overview Complete GNSS receiver module including memory LNA TCXO and RTC plus a built in patch antenna Constellations o SE868 A and SE868K3 A GPS L1 Glonass L1 and BeiDou B1with 99 search and 33 track...

Страница 11: ...y life Supported by evaluation kits 40 C to 85 C industrial temperature range 11 x 11 x 6 1 mm nominal 32 pad LGA package Low profile AL module height is 4 1 mm Surface mountable by standard SMT equip...

Страница 12: ...Migration for detailed pinout differences 2 3 1 Multi Constellation Modules SE868 A and SE868K3 Ax Features MediaTek MT3333 engine GPS QZSS and GLONASS satellite signals Galileo ready SBAS satellite s...

Страница 13: ...S only SE868 AS and SE868K7 Ax Variants 2 3 2 1 ROM Features SE868 AS and SE868K7 Ax modules Feature SE868 AS early production P N SE868ASA210Rxxx SE868 AS P N SE868ASA232Rxxx SE868K7 Ax ROM version 3...

Страница 14: ...SE868Kx Ax Family Product User Guide 1VV0301201 Rev 5 Page 14 of 83 2021 07 15 Not Subject to NDA Block Diagrams 2 4 1 Early Production Figure 3 SE868 Ax Block Diagram Figure 4 SE868 ASx Block Diagram...

Страница 15: ...SE868Kx Ax Family Product User Guide 1VV0301201 Rev 5 Page 15 of 83 2021 07 15 Not Subject to NDA 2 4 2 Current Production Figure 5 SE868K3 Ax Block Diagram Figure 6 SE868K7 Ax Block Diagram...

Страница 16: ...Kx Ax Family Product User Guide 1VV0301201 Rev 5 Page 16 of 83 2021 07 15 Not Subject to NDA Module Photos Figure 7 SE868 Family Photo Note All modules in the applicability table have a similar appear...

Страница 17: ...Kx Ax Family Product User Guide 1VV0301201 Rev 5 Page 17 of 83 2021 07 15 Not Subject to NDA The SE868Kx AL low profile modules are 2 mm shorter that the SE868 AS shown Figure 8 SE868xx Ax Top View Ph...

Страница 18: ...2021 07 15 Not Subject to NDA 3 EVALUATION BOARD EVB The EVB contains the module mounted on a PC Board to facilitate development and testing Please refer to the product Evaluation Board User Guide fo...

Страница 19: ...193 194 and 195 are supported They provide ranging signals for augmentation of the GPS system QZSS constellation usage is controlled by the PMTK352 command and is disabled by default NMEA reporting fo...

Страница 20: ...nd PMTK501 Assisted GPS AGPS Assisted GPS or Aided GPS is a method by which information from a source other than broadcast GPS signals is used to improve i e reduce TTFF The necessary ephemeris data i...

Страница 21: ...memory However they can still make use of Assisted GPS If the system design includes a host processor it can access server generated EPO data and send it to the module over the serial port This data i...

Страница 22: ...s jamming signals without the need for external components or tuning It rejects up to 12 CW Continuous Wave type signals of up to 80 dBm total power signal levels This feature is useful both in the de...

Страница 23: ...SE868 AS and SE868K7 A maximum is 5 Hz Enabling the SBAS feature limits the maximum fix rate to 5 Hz 1PPS 1PPS is a one pulse per second output signal Please refer to Section 9 5 3 1 1PPS for details...

Страница 24: ...ckup Standby To wake Character to Rx 161 0 Stop 161 1 Backup Periodic MT3333 only 223 Specify Extended Parameters 225 1 Backup 225 2 Standby Always Locate MT3333 and old MT3337 only Not on new MT3337E...

Страница 25: ...efer to Section 9 5 2 2 FORCE_ON SE868 A and SE868K3 Ax only for details 4 14 3 Standby Modes In these modes the receiver stops navigation the internal processor enters the standby state and the curre...

Страница 26: ...Periodic Modes SE868 A and SE868K3 Ax only These modes allow autonomous power on off control with reduced fix rate to decrease average power consumption The main power supply pin VCC_ON is still powe...

Страница 27: ...essive DEE PMTK225 Type Run_time Sleep_time 2nd_run_time 2nd_sleep_time che ckum Where Type 1 for Periodic backup mode or 2 for Periodic standby mode Run_time Full Power period ms Sleep_time Standby p...

Страница 28: ...epending on the environment and motion conditions the module can autonomously and adaptively adjust the parameters of the Periodic mode e g RF on off ratio and fix rate to achieve a balance in positio...

Страница 29: ...EPO data use the PMTK127 command Data Retention 1 Initialization Almanac Ephemeris EPO Host EPO EASY Position Time Power Cycle Y 2 Reset signal Y Full Cold Start Y 3 Cold Start Y Y Y Y 3 Warm Start Y...

Страница 30: ...tions 24 hr Static Live signals Full Power mode Note SE868 AS and SE868K7 Ax modules support GPS only Table 8 SE868xx A Horizontal Position Accuracy Time to First Fix Constellations s Start Type Max T...

Страница 31: ...gation 158 Tracking 160 GLO Acquisition 145 Navigation 158 Tracking 159 GPS GLO Acquisition 145 Navigation 158 Tracking 160 Table 10 SE868 A Sensitivity Const State Minimum Signal Level dBm SE868K3 A...

Страница 32: ...8Kx Ax Family Product User Guide 1VV0301201 Rev 5 Page 32 of 83 2021 07 15 Not Subject to NDA Jamming Mitigation Performance Example Figure 15 Jamming with AIC Disabled Figure 16 Jamming with AIC Enab...

Страница 33: ...onal proprietary information NMEA Output Messages Warning Some sentences may exceed the NMEA length limitation of 80 characters Default GPS constellation is enabled GLONASS is also enabled for SE868 A...

Страница 34: ...essages For example to report startup etc Table 15 Proprietary Output Messages NMEA Input Commands The modules use NMEA proprietary messages for commands and command responses This interface provides...

Страница 35: ...start PMTK103 Perform a COLD start However Time is preserved PMTK104 Perform a FULL COLD start system reset erasing any stored almanac data and then a COLD start PMTK120 Erase aiding data stored in f...

Страница 36: ...be upgraded via the primary serial port TX RX pins In order to update the FW the following steps should be performed to re program the module 1 Remove all power to the module 2 Connect serial port USB...

Страница 37: ...ns are to be grounded Reserved pins RES are to be left floating FORCE_ON is connected only on the SE868 A and SE868K3 Ax modules See section 9 5 2 2 FORCE_ON SE868 A and SE868K3 Ax only I2C and SPI pi...

Страница 38: ...RCE_ON I Force full power mode 3 14 No Connection NC Not connected 15 No Connection NC Not connected 16 No Connection NC Not connected 17 PPS O Pulse Per Second signal 18 Reserved RES Reserved Do not...

Страница 39: ...ion NC No Connection 3 14 No Connection NC Not connected 15 No Connection NC Not connected 16 No Connection NC Not connected 17 PPS O Pulse Per Second signal 18 Reserved RES Reserved Do not connect 19...

Страница 40: ...er mode 3 14 No Connection NC Not connected 15 SPI_MOSI I O SPI Data MOSI 4 16 No Connection NC Not connected 17 PPS O Pulse Per Second signal 18 No Connection NC Not connected 19 SPI_CS I O SPI Chip...

Страница 41: ...o not connect 3 14 No Connection NC Not connected 15 Reserved RES Reserved SPI on MT3333 16 No Connection NC Not connected 17 PPS O Pulse Per Second signal 18 No Connection NC Not connected 19 Reserve...

Страница 42: ...tables the main differences for the SE868 A and SE868K3 Ax modules are the addition of SPI pins which require a custom FW build and the change of pin 18 from Reserved to No Connection For the SE868 AS...

Страница 43: ...ection SPI_MOSI SPI MOSI 4 16 No Connection No Connection 17 PPS PPS 18 Reserved ECLK No Connection NC 19 Reserved SYNC_PULSE SPI_CS SPI CS 4 20 Reserved GIO10 Reserved 21 Ground Ground 22 I2C Data TX...

Страница 44: ...C_PULSE Reserved 4 20 Reserved NC Reserved 21 Ground Ground 22 TX1 TX1 5 23 RX1 RX1 5 24 No Connection No Connection 25 VCC VCC 26 No Connection No Connection 27 No Connection No Connection 28 Reserve...

Страница 45: ...e supply must be able to handle the current fluctuation including any inrush surge current GPS GNSS receiver modules require a clean and stable power supply In designing such a supply any resistance i...

Страница 46: ...c Vbatt 2 8 3 3 4 3 V The drop from 2 7 V to 0 V must be 1 ms Also keep the supply ripple as low as possible 50 mV Table 23 DC Supply Voltage 9 4 4 DC Power Consumption SE868 A State Constellation Typ...

Страница 47: ...e 25 C Supply voltages 3 3 VDC nominal SBAS not supported 1PPS sync disabled Table 25 SE868 AS Power Consumption 9 4 6 DC Power Consumption SE868K3 Ax State Constellation Typ Max Units Acquisition GPS...

Страница 48: ...ges are different from supply voltages VCC and VBATT Warning Several different logic levels are utilized by the digital signal interfaces of the module 9 5 1 1 Logic Levels Inputs RX0 RX1 Reset N Sign...

Страница 49: ...s are shown in Table 28 Input Logic Levels RX and Reset N 9 5 2 2 FORCE_ON SE868 A and SE868K3 Ax only For typical operation connect this pin through a 10 K resistor to ground to create a pulldown whi...

Страница 50: ...ilability and duration can be configured via the PMTK285 command Options for availability are Disable After 1st fix 3D Fix only 2D 3D Fix only Always NMEA output timestamp can be configured to have a...

Страница 51: ...proprietary commands RTCM SC 104 input and EPO data TX0 RX0 is also used to re flash the module MT3333 based modules only 9 7 2 Secondary Port 1 Usage TX1 NMEA message output RX1 DGPS input using the...

Страница 52: ...to UART or SPI via command PMTK258 The I2 C_Clock and I2 C_Data lines require external pullups example value 10 K Features Slave mode only hard coded address 0x10 Fast mode up to 400 Kbps 7 bit addres...

Страница 53: ...elit MT3333 I2C Application Note 9 7 5 SPI Port Operation MT3333 based modules only The MT3333 based modules support SPI interface on the 2nd port via command PMTK258 Data rate 700 kbit s Slave mode o...

Страница 54: ...ion and the satellite is 5 degrees or more above the horizon In actual practice the GPS satellites transmit slightly more power than specified and the signal level typically increases if a satellite h...

Страница 55: ...e will cause significant blockage plus any thermal coating applied to the vehicle glass can attenuate the GNSS signal by as much as 15 dB Again both of these factors will affect the performance of the...

Страница 56: ...GPS SE868K7 AL 9 x 9 x2 mm GPS Table 31 Supported Constellations Warning In order to optimize antenna performance it is strongly recommended to design a 30mm by 30mm ground plane under the module on...

Страница 57: ...odule in the PCB design as shown below in order to optimize antenna performance The ground plane should be on the top layer of the PCB directly under the module with the module centered on it Please r...

Страница 58: ...an Atom processor clocked at 1 6 GHz This is only 25 MHz away from the GNSS signal and depending upon temperature of the SAW filter can be within its passband Because of the nature of the address and...

Страница 59: ...grounds the minimum signals required to operate the receiver properly are the RF input signal and two digital I O signals TX0 and RX0 TX and RX are UART lines with a default of 9600 8 N 1 They are us...

Страница 60: ...ly Product User Guide 1VV0301201 Rev 5 Page 60 of 83 2021 07 15 Not Subject to NDA 12 MECHANICAL DRAWINGS Figure 21 SE868 Family low profile Mechanical Drawing Figure 22 SE868 Family high profile Mech...

Страница 61: ...SE868Kx Ax Family Product User Guide 1VV0301201 Rev 5 Page 61 of 83 2021 07 15 Not Subject to NDA 13 PCB FOOTPRINT Figure 23 SE868 Family Footprint...

Страница 62: ...868xx A module label has a 2D Barcode identifying the module and its serial number Contact a Telit representative for information on specific module serial numbers Key Description 1 Telit logo 2 Produ...

Страница 63: ...250 units per reel Each reel is dry packaged and vacuum sealed in a Moisture Barrier Bag MBB with two silica gel packs and placed in a carton The minimum order quantity for shipping is 250 units All...

Страница 64: ...SE868Kx Ax Family Product User Guide 1VV0301201 Rev 5 Page 64 of 83 2021 07 15 Not Subject to NDA Figure 26 SE868 Family Tape Detail...

Страница 65: ...The modules are supplied in a hermetically sealed bag with desiccant and humidity indicator cards The parts must be placed and reflowed within 168 hours of first opening the hermetic seal provided the...

Страница 66: ...SE868Kx Ax Family Product User Guide 1VV0301201 Rev 5 Page 66 of 83 2021 07 15 Not Subject to NDA Figure 27 Moisture Sensitive Device Label...

Страница 67: ...sembly Considerations Since the module contains piezo electric components it should be placed near the end of the assembly process to minimize mechanical shock to it During board assembly and singulat...

Страница 68: ...e reflows the assembly process for the module uses one of those profiles therefore the module is limited to two reflows When re flowing a dual sided SMT board it is important to reflow the side contai...

Страница 69: ...handling and use of this module can cause permanent damage to the receiver There is also the possible risk of personal injury from mechanical trauma or choking hazard Please refer to section 17 3 Safe...

Страница 70: ...t bulb temperature of 35 C whichever is less Maximum Vehicle Dynamics 600 m sec acquisition and navigation 2G acceleration Table 33 SE868 Family Operating Environmental Limits Storage Environmental Li...

Страница 71: ...modules comply with the following Directive 2011 65 EU art 16 on the restriction of the use of certain hazardous substances in electrical and electronic equipment RoHS Manufactured in an ISO 9001 200...

Страница 72: ...SE868Kx Ax Family Product User Guide 1VV0301201 Rev 5 Page 72 of 83 2021 07 15 Not Subject to NDA EU RED Declarations of Conformity Figure 29 SE868 A EU RED Declaration of Conformity...

Страница 73: ...SE868Kx Ax Family Product User Guide 1VV0301201 Rev 5 Page 73 of 83 2021 07 15 Not Subject to NDA Figure 30 SE868 AS EU RED Declaration of Conformity...

Страница 74: ...SE868Kx Ax Family Product User Guide 1VV0301201 Rev 5 Page 74 of 83 2021 07 15 Not Subject to NDA Figure 31 SE868K3 A EU RED Declaration of Conformity...

Страница 75: ...SE868Kx Ax Family Product User Guide 1VV0301201 Rev 5 Page 75 of 83 2021 07 15 Not Subject to NDA Figure 32 SE868K3 AL EU RED Declaration of Conformity...

Страница 76: ...SE868Kx Ax Family Product User Guide 1VV0301201 Rev 5 Page 76 of 83 2021 07 15 Not Subject to NDA Figure 33 SE868K7 A EU RED Declaration of Conformity...

Страница 77: ...SE868Kx Ax Family Product User Guide 1VV0301201 Rev 5 Page 77 of 83 2021 07 15 Not Subject to NDA Figure 34 SE868K7 AL EU RED Declaration of Conformity...

Страница 78: ...to announce such Telit products programming or services in your country 17 1 1 Copyrights This instruction manual and the Telit products described herein may include or describe Telit copyrighted mate...

Страница 79: ...clusively in accordance with the terms of such agreement 17 2 2 Copyrighted Materials The Software and the documentation are copyrighted materials Making unauthorized copies is prohibited by the law T...

Страница 80: ...LIMITATION LOST OF PROFITS HOWEVER CAUSED AND WHETHER MADE UNDER CONTRACT TORT OR OTHER LEGAL THEORY ARISING IN ANY WAY OUT OF THE USE OR DISTRIBUTION OF THE OTHER CODES OR THE EXERCISE OF ANY RIGHTS...

Страница 81: ...The system integrator is responsible for the functioning of the final product Therefore the external components of the module as well as any project or installation issue have to be handled with care...

Страница 82: ...pdated Vcc voltage range Added diagrams EASY Jamming GLP Periodic Always Loc Added power management command summary table Added configuration command references Added 1PPS information Rearranged I2C i...

Страница 83: ......

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