Sierra Wireless AirPrime XM1210 User manual

AirPrime XM1210
Product Technical Specification
41112759
Rev 2.3

Product Technical Specification
Rev 2.3 Mar.19 2 41112759
Important
Notice
Due to the nature of wireless communications, transmission and reception of data
can never be guaranteed. Data may be delayed, corrupted (i.e., have errors) or be
totally lost. Although significant delays or losses of data are rare when wireless
devices such as the Sierra Wireless modem are used in a normal manner with a
well-constructed network, the Sierra Wireless modem should not be used in
situations where failure to transmit or receive data could result in damage of any
kind to the user or any other party, including but not limited to personal injury,
death, or loss of property. Sierra Wireless accepts no responsibility for damages
of any kind resulting from delays or errors in data transmitted or received using
the Sierra Wireless modem, or for failure of the Sierra Wireless modem to
transmit or receive such data.
Safety and
Hazards
Do not operate the Sierra Wireless modem in areas where blasting is in progress,
where explosive atmospheres may be present, near medical equipment, near life
support equipment, or any equipment which may be susceptible to any form of
radio interference. In such areas, the Sierra Wireless modem MUST BE
POWERED OFF. The Sierra Wireless modem can transmit signals that could
interfere with this equipment.
Do not operate the Sierra Wireless modem in any aircraft, whether the aircraft is
on the ground or in flight. In aircraft, the Sierra Wireless modem MUST BE
POWERED OFF. When operating, the Sierra Wireless modem can transmit
signals that could interfere with various onboard systems.
Note: Some airlines may permit the use of cellular phones while the aircraft is on the
ground and the door is open. Sierra Wireless modems may be used at this time.
The driver or operator of any vehicle should not operate the Sierra Wireless
modem while in control of a vehicle. Doing so will detract from the driver or
operator's control and operation of that vehicle. In some states and provinces,
operating such communications devices while in control of a vehicle is an offence.
Limitation of
Liability
The information in this manual is subject to change without notice and does not
represent a commitment on the part of Sierra Wireless. SIERRA WIRELESS AND
ITS AFFILIATES SPECIFICALLY DISCLAIM LIABILITY FOR ANY AND ALL
DIRECT, INDIRECT, SPECIAL, GENERAL, INCIDENTAL, CONSEQUENTIAL,
PUNITIVE OR EXEMPLARY DAMAGES INCLUDING, BUT NOT LIMITED TO,
LOSS OF PROFITS OR REVENUE OR ANTICIPATED PROFITS OR REVENUE
ARISING OUT OF THE USE OR INABILITY TO USE ANY SIERRA WIRELESS
PRODUCT, EVEN IF SIERRA WIRELESS AND/OR ITS AFFILIATES HAS BEEN
ADVISED OF THE POSSIBILITY OF SUCH DAMAGES OR THEY ARE
FORESEEABLE OR FOR CLAIMS BY ANY THIRD PARTY.
Notwithstanding the foregoing, in no event shall Sierra Wireless and/or its
affiliates aggregate liability arising under or in connection with the Sierra Wireless
product, regardless of the number of events, occurrences, or claims giving rise to
liability, be in excess of the price paid by the purchaser for the Sierra Wireless
product.

Preface
Rev 2.3 Mar.19 3 41112759
Patents This product may contain technology developed by or for Sierra Wireless Inc. This
product includes technology licensed from QUALCOMM®. This product is
manufactured or sold by Sierra Wireless Inc. or its affiliates under one or more
patents licensed from MMP Portfolio Licensing.
Copyright © 2019 Sierra Wireless. All rights reserved.
Trademarks Sierra Wireless®, AirPrime®, AirLink®, AirVantage®and the Sierra Wireless logo
are registered trademarks of Sierra Wireless.
Windows®and Windows Vista®are registered trademarks of Microsoft
Corporation.
Macintosh®and Mac OS X®are registered trademarks of Apple Inc., registered in
the U.S. and other countries.
QUALCOMM®is a registered trademark of QUALCOMM Incorporated. Used
under license.
Other trademarks are the property of their respective owners.
Contact
Information
Revision
History
Sales information and technical
support, including warranty and returns
Web: sierrawireless.com/company/contact-us/
Global toll-free number: 1-877-687-7795
6:00 am to 5:00 pm PST
Corporate and product information Web: sierrawireless.com
Revision
number
Release date Changes
1.0 October 30, 2018 Creation
1.1 November 05, 2018 Fixed typos throughout the document
1.2 November 14, 2018 Updated:
•Figure 10-1 on page 52
•Figure 11-1 on page 53
2.0 February 13, 2019 Updated:
•Figure 2-2 on page 13
•Co-Design Layout Guide on page 48
2.1 February 18, 2019 Updated reference link in Table 3-5 on page 20

Product Technical Specification
Rev 2.3 Mar.19 4 41112759
2.2 March 11, 2019 Added GST in:
•Table 3-2 on page 19
•Table 3-3 on page 19
•Table 3-4 on page 20
•GST—Position Error Statistics on page 31
Updated Figure 1-2 on page 11
2.3 March 18, 2019 Updated Table 3-1 on page 19
Revision
number
Release date Changes

Rev 2.3 Mar.19 5 41112759
Contents
Function Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Target Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Product Highlights and Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
System Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
I2C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
USB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
1PPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
AGNSS for Faster TTFF (PED in Flash) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
PVT Logger Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Mechanical Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
PCB Copper Pad Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Pin Assignment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Description of I/O Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Absolute Maximum Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
NMEA Output Sentences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
GGA—Time, Position and Related Data of Navigation Fix . . . . . . . . . . . . . . . . . . . . . .20
GSA — GNSS DOP and Active Satellites, Including GPS (GPGSA), GLONASS (GLGSA),
Beidou (BDGAS) and, GPS and GLONASS or GPS and Beidou (GNGSA) . . . . . . . . .21
GSV— Satellites in View, Including GPS (GPGSV), GLONASS (GLGSV), Beidou
(BDGSV) and, GPS and GLONASS or GPS and Beidou (GNGSV) . . . . . . . . . . . . . . .25
RMC—Recommended Minimum Navigation Information. . . . . . . . . . . . . . . . . . . . . . . .28
ZDA—Time and Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
GST—Position Error Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
NMEA Command Protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Product Technical Specification
Rev 2.3 Mar.19 6 41112759
Reference Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Reference Schematic Design for Using UART0 + I2C / UART0 + USB . . . . . . . . . . . . 33
Reference Schematic Design for Using UART0 + I2C . . . . . . . . . . . . . . . . . . . . . . . 33
Reference Schematic Design for Using UART0 + USB . . . . . . . . . . . . . . . . . . . . . . 34
Reference Schematic Design for Using a Patch (Passive) Antenna . . . . . . . . . . . . . . . 35
Reference Schematic Design for Using an Active Antenna. . . . . . . . . . . . . . . . . . . . . . 36
General Rules for Circuit Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Circuit Design. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
VBACKUP Backup Battery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
UART0 / I2C / USB Serial Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Antenna Compliance Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
1PPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
1.8V Boost to 3.3V Application. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Layout Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Layout Underneath the GNSS Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Placement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Trace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Ground Segmentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
How to Check the Working Status of the GNSS Module . . . . . . . . . . . . . . . . . . . . . . . . 47
Co-Design Layout Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Type 1: Co-Design Between XM1110 and XM1210 . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Super Capacitor Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
About Super Capacitors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
How to Calculate the Backup Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
50Ω Antenna Matching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
UART to RS232 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
UART to USB Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Rev 2.3 Mar.19 7 41112759
List of Figures
Figure 1-1: XM1210 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Figure 1-2: System Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Figure 2-1: Mechanical Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Figure 2-2: PCB Copper Pad. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Figure 2-3: Pin Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Figure 4-1: Reference Schematic for Using UART0 + I2C . . . . . . . . . . . . . . . . . . . . . . . . .33
Figure 4-2: Reference Schematic for Using UART0 + USB . . . . . . . . . . . . . . . . . . . . . . . .34
Figure 4-3: Patch Antenna. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Figure 4-4: Active Antenna Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Figure 5-1: Power Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Figure 5-2: Rechargeable Coin Battery with VBACKUP . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Figure 5-3: Addition of Pull-up Resistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Figure 5-4: Addition of Capacitance and TVS Diode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
Figure 5-5: PCB Trace Design for Antenna Impedance Matching. . . . . . . . . . . . . . . . . . . .40
Figure 5-6: External Choke Coil Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Figure 5-7: 1PPS Signal and its Pulse Width with 100ms Duration. . . . . . . . . . . . . . . . . . .42
Figure 5-8: 1PPS Signal Design for IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
Figure 5-9: TI Boost IC Application Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
Figure 5-10: Output Voltage vs. Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
Figure 5-11: Signal Level Shift Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
Figure 5-12: GNSS Module with a clean GND Plane . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Figure 5-13: Examples of Turns in Trace Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Figure 5-14: Examples of Independent Trace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Figure 6-1: TX0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
Figure 7-1: Module Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Figure 8-1: Calculating Backup Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
Figure 9-1: Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
Figure 10-1: RS232 Signal Conversion Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
Figure 11-1: UART to USB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

Rev 2.3 Mar.19 8 41112759
List of Tables
Table 2-1: Pin Assignment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Table 2-2: NRESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Table 2-3: WAKE UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Table 2-4: WAKE UP Pin Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Table 2-5: Specification Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Table 2-6: Maximum Ranges. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Table 2-7: Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Table 3-1: Position Fix Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Table 3-2: NMEA v3.01 Output Sentence for GPS and GNSS . . . . . . . . . . . . . . . . . . . . . .19
Table 3-3: NMEA v4.00 Output Sentence for GPS and GNSS . . . . . . . . . . . . . . . . . . . . . .19
Table 3-4: NMEA v4.10 Output Sentence for GPS and GNSS . . . . . . . . . . . . . . . . . . . . . .20
Table 3-5: GGA Data Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Table 3-6: Position Fix Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Table 3-7: GSA Data Format for NMEA v3.01. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Table 3-8: GSA Data Format for NMEA v4.00. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Table 3-9: GSA Data Format for NMEA v4.10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Table 3-10: Mode 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Table 3-11: Mode 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Table 3-12: Satellite ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Table 3-13: System ID (for NMEA v4.10 only). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Table 3-14: GNGSV Data Format for NMEA v3.01 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Table 3-15: GPGSV Data Format for NMEA v4.00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Table 3-16: GPGSV Data Format for NMEA v4.10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Table 3-17: Satellite ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Table 3-18: Signal ID (for NMEA v4.10 only). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Table 3-19: RMC Data Format for NMEA v3.01 and v4.00 . . . . . . . . . . . . . . . . . . . . . . . . .29
Table 3-20: RMC Data Format for NMEA v4.10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Table 3-21: ZDA Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Table 3-22: GST Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Table 3-23: NMEA Command Protocol Example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Table 5-1: GPS/GLONASS External Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

Rev 2.3 Mar.19 9 41112759
Table 5-2: Beidou/GPS External Antenna. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Table 5-3: Tri-Frequency External Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Table 7-1: Pin Assignment Differences. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Table 9-1: Antenna Matching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
List of Tables

Rev 2.3 Mar.19 10 41112759
1
1: Function Description
Overview
This document provides the necessary guidelines for a successful system design
using XM1210 modules.
The XM1210 is a multi-GNSS receiver that is capable of tracking GPS and Glonass
systems simultaneously. The module provides an external antenna interface that
supports both active and passive GNSS antennas.
The XM1210 is one of the smallest multi-GNSS modules on the market with an ultra-
compact size of 9.0 x 9.5 x 2.1 mm in a QFN Package. It supports multiple interfaces
such as USB and I2C that can be used instead of UART.
The module is integrated with SMPS (switched-mode power supply) which allows for
the lowest possible power consumption while offering optimum GNSS sensitivity and
performance.
The XM1210 is based on the latest HD8021 chipset and supports all standard GNSS
features including QZSS, SBAS, Anti-Jamming and AGNSS (Assisted-GNSS).
Target Applications
•Handheld devices
•M2M applications
•Asset management
•Surveillance systems
•Wearable products
Figure 1-1: XM1210

Function Description
Rev 2.3 Mar.19 11 41112759
Product Highlights and Features
•24 tracking / 48 acquisition-channel GPS and GLONASS receiver
•Supports QZSS and SBAS (WAAS, EGNOS, MSAS, GAGAN)
•Sensitivity: -161 dBm
•Update Rate: 1 Hz (default)
•High accuracy 1-PPS timing (25ns RMS) and the pulse width is 100ms
•AGNSS Support for Fast TTFF
•PVT Logger Function
•Support interface types: I2C/ USB/ UART
•Consumption current (@ 3.3V):
For GPS and GLONASS constellations
·Acquisition: 40mA (typ)
·Tracking: 35mA (typ)
•RoHS
Precautions
Please read carefully before you start:
If you use the GNSS receiver inside buildings, tunnels, or beside any huge
objects, the GNSS signals might be cut-off or weakened. Please do not assume
the receiver has malfunctioned.
The XM1210 modules is an electrostatic sensitive device, please DO NOT touch
the XM1210 module directly. Follow ESD safety rules when handling. When using
the XM1210 module for the first time, it is strongly recommended that you test the
XM1210 Module outdoors with open sky for at least 10 to 15 minutes to ensure
that full ephemeris data is received.
System Block Diagram
Figure 1-2: System Block Diagram

Product Technical Specification
Rev 2.3 Mar.19 12 41112759
I2C
The I2C interface is a serial input and output port, operating as a slave device.
•Slave receiving
•Slave address: 0x55
•Speed grades: Standard-mode 100kbit/s, Fast-mode 400kbit/s
USB
A USB version 2.0 FS compatible interface can be used for communication as an
alternative to the UART. It supports USB 2.0 full speed at 12Mbps.
1PPS
The XM1210 generates a-pulse-per-second signal (1 PPS) after 3D fixed. It is an
electrical signal which precisely indicates the start of a second within an accuracy
of 25ns. The PPS signal is provided through a designated output pin for external
applications.
AGNSS for Faster TTFF (PED in Flash)
The AGNSS provides pre-download PED (Proprietary Ephemeris Data) data to
speed up TTFF (Time To First Fix). This feature is useful when a satellite signal is
weak; it allows the module to still get position information quickly. AGNSS
ephemeris can be downloaded from an FTP server via the Internet.
PVT Logger Function
PVT logger function is enabled in the XM1210 module and can become a logger-
capable (built-in internal flash) device, and record GNSS data such as UTC,
latitude, longitude, valid or checksum which makes it convenient for users for
record logger and debugging use.
The internal flash of the XM1210 has 32 KB for this function, and uses the smart
overlapping mechanism to keep the latest logger data (4KB).

Rev 2.3 Mar.19 13 41112759
2
2: Specifications
Mechanical Dimensions
Dimension: (Unit: mm, Maximum height: 2.3 mm)
Figure 2-1: Mechanical Dimensions
PCB Copper Pad Definition
(Unit: mm, Tolerance: ±0.1mm)
Figure 2-2: PCB Copper Pad

Product Technical Specification
Rev 2.3 Mar.19 14 41112759
Pin Configuration
Figure 2-3: Pin Configuration
Pin Assignment
Table 2-1: Pin Assignment
Pin Name I/O Description and Note Active
Low /
High
IO
Voltage
Domain
Reset
Statea
Recommendation
for Unused Pad
1GND P Ground 0V Mandatory connection
2RF_IN IGNSS RF signal input Mandatory connection
3GND P Ground 0V Mandatory connection
4GND P Ground 0V Mandatory connection
5GND P Ground 0V Mandatory connection
6GND P Ground 0V Mandatory connection
7VCC PI Main DC power input 3.3V Mandatory connection
8VBACKUP PI Backup power input for
RTC and navigation data
keep
3.3V Connection to C=1μF
9GND P Ground 0V Mandatory connection
10 I2C_SDA I/O I2C serial data (in slave
mode)
3.3V O, PU Left openb
11 I2C_SCL II2C serial clock (in slave
mode)
3.3V I, PU Left openb
12 USB_DN I/O USB differential data bus
minus
3.3V Left openb
13 USB_DP I/O USB differential data bus
plus
3.3V Left openb

Specifications
Rev 2.3 Mar.19 15 41112759
Description of I/O Pins
•Pin1: GND (Ground)
•Pin2: RF_IN
·The GNSS RF signal input which can be connected to a passive antenna or
an active antenna.
For details on how to select an active antenna, refer to External Antenna
Specification on page 41.
•Pin3: GND (Ground)
•Pin4: GND (Ground)
•Pin5: GND (Ground)
•Pin6: GND (Ground)
•Pin7: VCC
·Main DC power supply (3.0V to 3.6V; typical: 3.3V)
•Pin8: VBACKUP
·This connects to the backup power of the XM1210. A power source (such
as a battery) connected to this pin will help the module in keeping its
internal RTC running and save ephemeris data in the module which can
speed up TTFF when the main power source is turned off.
·The voltage ranges from 1.6V to 3.6V (typical: 3.3V).
·This pin is also available when VCC is connected to a power supply.
·VBACKUP functions with a Shottky diode and limited-current resistor.
·If VBACKUP power is not reserved, the module will perform a lengthy cold
start each time it is powered on, as previous ephemeris data is not retained
and needs to be re-acquired.
·If not used, keep this pin floating.
•Pin9:GND (Ground)
•Pin10: I2C_SDA
·Can be used to transmit and receive data and communicate with the host.
·If not used, keep this pin floating.
14 USB_VCC PI USB supply voltage input 3.3V Left openb
15 NC -Not connected Left open
16 TX0 OSerial data output for
NMEA output (TTL)
3.3V O, PU Left openb
17 RX0 ISerial data input for
firmware update (TTL)
3.3V I, PU Left openb
18 1PPS O1PPS time mark output 3.3V O, PU Left open
19 NRESET IReset input L3.3V I, PU Left open
20 WAKE UP IWake up from power saving HLeft open
a. I = Input, O = Output, PU = Pull up, PD = Pull Down, H = High, T = High Impedance
b. Based on Firmware version, the user can decide if the UART / I2C / USB pin is a mandatory connection.
Table 2-1: Pin Assignment (Continued)
Pin Name I/O Description and Note Active
Low /
High
IO
Voltage
Domain
Reset
Statea
Recommendation
for Unused Pad

Product Technical Specification
Rev 2.3 Mar.19 16 41112759
•Pin11: I2C_SCL
·Can be used to transmit and receive clock and communicate with the host.
·If not used, keep this pin floating.
•Pin12: USB_DN
·Dedicated Full Speed v2.0 (DN pin of the USB connector)
•Pin13: USB_DP
·Dedicated Full Speed v2.0 (DP pin of the USB connector)
•Pin14: USB_VCC
·USB supply voltage (3.0V to 3.6V; typical: 3.3V)
•Pin15: NC (Not Connected)
•Pin16: TX0 (UART 0 transmitter; outputs GNSS information for application)
•Pin17: RX0 (UART 0 receiver; to receive commands from system)
•Pin18: 1PPS
·This pin provides one pulse-per-second signal output.
·If not used, keep this pin floating.
•Pin19: NRESET
·Active on Low for the module to reset.
·If not used, keep this pin floating.
•Pin20: WAKE UP
·Active on High will wake the module up from power saving mode.
Table 2-2: NRESET
Symbol Min (V) Typ (V) Max (V)
Low 0 - 0.89
High (default) 2.2 -3.3
Table 2-3: WAKE UP
Symbol Min (V) Typ (V) Max (V)
Low (default) 0 - 0.89
High 2.2 -3.3
Table 2-4: WAKE UP Pin Modes
Mode Function
Normal (default) The module automatically enters normal mode by default.
Power Saving The module can be woken up by this pin when it is in power
saving mode (set WAKE UP pin active on high)

Specifications
Rev 2.3 Mar.19 17 41112759
Specifications
BootROM Enter BootROM mode to upgrade firmware using these steps:
1. The WAKE UP pin must be initially connected to ground.
2. Power up the module’s main power.
3. The WAKE UP pin can be removed from ground.
4. Use “SWGNSSTool” to upgrade the firmware.
Table 2-4: WAKE UP Pin Modes (Continued)
Mode Function
Table 2-5: Specification Data
Description
GNSS Chipset Allystar HD8021
Frequency GPS/QZSS L1, 1575.42MHz
GLONASS L1, 1598.0625~1605.375MHz
BEIDOU B1, 1561.098MHz
Sensitivity Acquisition: -147dBm
Tracking: -161dBm
SV Numbers GPS #1~32
GLONASS #65~96
BEIDOU #201~237 (see Protocols on page 19 for details)
Protocol NMEA 0183 V3.01 (Default), NMEA 0183 V4.0, NMEA 0183 V4.1
TTFF
(Num of SVs ≥ 6, C/N > 40dB)
Hot start: 2 second typical
Warm start: 30 seconds typical
Cold start: 35 seconds typical, 60 seconds maximum
Position Accuracy Without aid: 2.5m (50% CEP)
DGPS (SBAS(WAAS,EGNOS,MSAS, GAGAN)):2.0m (50% CEP)
Velocity Accuracy Without aid: 0.1m/s
DGPS(SBAS(WAAS,EGNOS,MSAS, GAGAN)):0.05m/s
Timing Accuracy (1PPS Output) 25ns RMS within 100ms in one pulse
Altitude 18,000m maximum
Velocity Maximum 515m/s
Update Rate 1Hz (default)
Acceleration Maximum 4G
Baud Rate 115200 bps (default)
DGPS SBAS (default) [WAAS, EGNOS, MSAS, GAGAN]
Power Supply VCC: 3.0V to 3.6V
VBACKUP: 1.6V to 3.6V
USB: 3.0V to 3.6V

Product Technical Specification
Rev 2.3 Mar.19 18 41112759
Absolute Maximum Ranges
Operating Conditions
Current Consumption
@ 3.3V,1Hz Update Rate
GPS and GLONASS
Acquisition: 40mA (TYP)
Tracking: 35mA (TYP)
Backup Power
Consumption@ 3.3V
10μA (TYP)
Power Saving Sleep mode: 7mA (TYP)
Deep sleep mode: 300μA (TYP)
Main power down mode: 15μA (TYP)
NRESET Current @ 3.3V 75μA (TYP)
Working Temperature -40 °C to +85 °C
Dimension 9.0 x 9.5 x 2.1 mm, SMD
Weight 0.4g
Table 2-5: Specification Data (Continued)
Description
Table 2-6: Maximum Ranges
Symbol Min Max Unit
Power Supply Voltage VCC 3.0 3.6 V
Backup Battery Voltage VBACKUP 1.6 3.6 V
USB Supply Voltage USB_VCC 3.0 3.6 V
Table 2-7: Operating Conditions
Parameter Condition Min Max Unit
RX0 TTL H Level VCC = 3.3V 23.3 V
RX0 TTL L Level - 0 1 V
TX0 TTL H Level VCC = 3.3V 2.6 3.3 V
TX0 TTL L Level - 0 0.5 V
USB_H Level Input USB_VCC = 3.3V 2 3.3 V
USB_L Level Input - 0 1 V
USB_H Level Output USB_VCC = 3.3V 2.3 3.3 V
USB_H Level Output - 0 0.5 V

Rev 2.3 Mar.19 19 41112759
3
3: Protocols
NMEA Output Sentences
Table 3-1 lists all NMEA output sentences specifically developed and defined by
Allystar.
The following tables list NMEA output sentences used in GPS, GLONASS and Beidou
systems.
Table 3-1: Position Fix Indicator
Option Description
GGA Time, position and fix type data.
GSA GNSS receiver operating mode, active satellites used in the
position solution and DOP values.
GSV The number of GNSS satellites in view, satellite ID numbers,
elevation, azimuth, and SNR values.
RMC Time, date, position, course and speed data.
The recommended minimum navigation information.
ZDA Time and date
GST Position error statistics
Table 3-2: NMEA v3.01 Output Sentence for GPS and GNSS
System GGA GSA GSV RMC ZDA GST
GPS GPGGA GPGSA GPGSV GPRMC GPZDA GPGST
GNSS
(GPS and GLONASS)
(GPS and Beidou)
GNGGA GNGSA GNGSV GNRMC GNZDA GNGST
Table 3-3: NMEA v4.00 Output Sentence for GPS and GNSS
System GGA GSA GSV RMC ZDA GST
GPS GPGGA GPGSA GPGSV GPRMC GPZDA GPGST
GNSS
(GPS and GLONASS)
GNGGA GPGSA
GLGSAaGPGSV GLGSVaGNRMC GNZDA GNGST
GNSS
(GPS and Beidou)
GNGGA GPGSA
BDGSAaGPGSV BDGSVaGNRMC GNZDA GNGST
a. In Talker ID, GP is a short term of GPS, GL is GLONASS, BD is Beidou and GN is GNSS.

Product Technical Specification
Rev 2.3 Mar.19 20 41112759
GGA—Time, Position and Related Data of
Navigation Fix
Table 3-5 explains the NMEA (version 3.01 / 4.00 / 4.10) sentences below:
(GPS satellite)
$GPGGA,082929.000,2305.76749,N,12017.02532,E,1,10,1.06,17.5,
M,17.2,M,,*59
(GPS and GLONASS satellites)
$GNGGA,022827.000,2305.76627,N,12017.02387,E,2,17,0.81,9.7,
M,17.2,M,,*74
(GPS and Beidou satellites)
$GNGGA,055818.000,2305.76768,N,12017.02310,E,2,19,0.84,11.1,
M,17.2,M,,*48
Table 3-4: NMEA v4.10 Output Sentence for GPS and GNSS
System GGA GSA GSV RMC ZDA GST
GPS GPGGA GPGSA GPGSV GPRMC GPZDA GPGST
GNSS
(GPS and GLONASS)
GNGGA GNGSA GPGSV
GLGSVaGNRMC GNZDA GNGST
GNSS
(GPS and Beidou)
GNGGA GNGSA GPGSV
BDGSVaGNRMC GNZDA GNGST
a. In Talker ID, GP is a short term of GPS, GL is GLONASS, BD is Beidou and GN is GNSS.
Table 3-5: GGA Data Format
Name Example Units Description
Message ID $GNGGA GGA protocol header
UTC Time 022827.000 hhmmss.sss
Latitude 2305.76627 ddmm.mmmm
N/S Indicator NN North or S South
Longitude 12017.02387 dddmm.mmmm
E/W Indicator EE East or W West
Position Fix Indicator 2See Table 3-6 on page 21
Satellites Used 17
HDOP 0.81 Horizontal Dilution of Precision
MSL Altitude 9.7 meters Antenna Altitude above/below mean-sea-level
Units Mmeters Units of antenna altitude