User's Manual
Table Of Contents
- Preface
- Contents
- 1 System description
- 1.1 Overview
- 1.2 Architecture
- 1.3 Pin-out
- 1.4 Operating modes
- 1.5 Supply interfaces
- 1.6 System function interfaces
- 1.7 Antenna interface
- 1.8 SIM interface
- 1.9 Serial interfaces
- 1.9.1 Asynchronous serial interface (UART)
- 1.9.1.1 UART features
- 1.9.1.2 UART AT interface configuration
- 1.9.1.3 UART signal behavior
- 1.9.1.4 UART and power-saving
- AT+UPSV=0: power saving disabled, fixed active-mode
- AT+UPSV=1: power saving enabled, cyclic idle/active-mode
- AT+UPSV=2: power saving enabled and controlled by the RTS line
- AT+UPSV=3: power saving enabled and controlled by the DTR line
- Wake up via data reception
- Additional considerations for SARA-U2 modules
- 1.9.1.5 Multiplexer protocol (3GPP 27.010)
- 1.9.2 Auxiliary asynchronous serial interface (UART AUX)
- 1.9.3 USB interface
- 1.9.4 DDC (I2C) interface
- 1.9.1 Asynchronous serial interface (UART)
- 1.10 Audio interface
- 1.11 General Purpose Input/Output (GPIO)
- 1.12 Reserved pins (RSVD)
- 1.13 System features
- 1.13.1 Network indication
- 1.13.2 Antenna detection
- 1.13.3 Jamming detection
- 1.13.4 TCP/IP and UDP/IP
- 1.13.5 FTP
- 1.13.6 HTTP
- 1.13.7 SMTP
- 1.13.8 SSL
- 1.13.9 Dual stack IPv4/IPv6
- 1.13.10 Smart temperature management
- 1.13.11 AssistNow clients and GNSS integration
- 1.13.12 Hybrid positioning and CellLocate®
- 1.13.13 Firmware upgrade Over AT (FOAT)
- 1.13.14 Firmware upgrade Over The Air (FOTA)
- 1.13.15 In-Band modem (eCall / ERA-GLONASS)
- 1.13.16 SIM Access Profile (SAP)
- 1.13.17 Power saving
- 2 Design-in
- 2.1 Overview
- 2.2 Supply interfaces
- 2.2.1 Module supply (VCC)
- 2.2.1.1 General guidelines for VCC supply circuit selection and design
- 2.2.1.2 Guidelines for VCC supply circuit design using a switching regulator
- 2.2.1.3 Guidelines for VCC supply circuit design using a Low Drop-Out (LDO) linear regulator
- 2.2.1.4 Guidelines for VCC supply circuit design using a rechargeable Li-Ion or Li-Pol battery
- 2.2.1.5 Guidelines for VCC supply circuit design using a primary (disposable) battery
- 2.2.1.6 Additional guidelines for VCC supply circuit design
- 2.2.1.7 Guidelines for external battery charging circuit
- 2.2.1.8 Guidelines for external battery charging and power path management circuit
- 2.2.1.9 Guidelines for VCC supply layout design
- 2.2.1.10 Guidelines for grounding layout design
- 2.2.2 RTC supply (V_BCKP)
- 2.2.3 Interface supply (V_INT)
- 2.2.1 Module supply (VCC)
- 2.3 System functions interfaces
- 2.4 Antenna interface
- 2.5 SIM interface
- 2.6 Serial interfaces
- 2.6.1 Asynchronous serial interface (UART)
- 2.6.1.1 Guidelines for UART circuit design
- Providing the full RS-232 functionality (using the complete V.24 link)
- Providing the TXD, RXD, RTS, CTS and DTR lines only (not using the complete V.24 link)
- Providing the TXD, RXD, RTS and CTS lines only (not using the complete V.24 link)
- Providing the TXD and RXD lines only (not using the complete V24 link)
- Additional considerations
- 2.6.1.2 Guidelines for UART layout design
- 2.6.1.1 Guidelines for UART circuit design
- 2.6.2 Auxiliary asynchronous serial interface (UART AUX)
- 2.6.3 Universal Serial Bus (USB)
- 2.6.4 DDC (I2C) interface
- 2.6.1 Asynchronous serial interface (UART)
- 2.7 Audio interface
- 2.7.1 Analog audio interface
- 2.7.1.1 Guidelines for microphone and speaker connection circuit design (headset / handset modes)
- 2.7.1.2 Guidelines for microphone and loudspeaker connection circuit design (hands-free mode)
- 2.7.1.3 Guidelines for external analog audio device connection circuit design
- 2.7.1.4 Guidelines for analog audio layout design
- 2.7.2 Digital audio interface
- 2.7.1 Analog audio interface
- 2.8 General Purpose Input/Output (GPIO)
- 2.9 Reserved pins (RSVD)
- 2.10 Module placement
- 2.11 Module footprint and paste mask
- 2.12 Thermal guidelines
- 2.13 ESD guidelines
- 2.14 SARA-G350 ATEX and SARA-U270 ATEX integration in explosive atmospheres applications
- 2.15 Schematic for SARA-G3 and SARA-U2 series module integration
- 2.16 Design-in checklist
- 3 Handling and soldering
- 4 Approvals
- 5 Product testing
- Appendix
- A Migration between LISA and SARA-G3 modules
- A.1 Overview
- A.2 Checklist for migration
- A.3 Software migration
- A.4 Hardware migration
- B Migration between SARA-G3 and SARA-U2
- C Glossary
- Related documents
- Revision history
- Contact
SARA-G3 and SARA-U2 series - System Integration Manual
1 System description
1.1 Overview
SARA-G3 series GSM/GPRS cellular modules and SARA-U2 series GSM/EGPRS/HSPA cellular modules are versatile
solutions offering voice and/or data communication over diverse radio access technologies in the same miniature
SARA LGA form factor (26 x 16 mm) that allows seamless drop-in migration between the two SARA-G3 and
SARA-U2 series and easy migration to u-blox LISA-U series GSM/EGPRS/HSPA+ modules, LISA-C2 series CDMA
modules, TOBY-L1 series LTE modules and to TOBY-L2 series GSM/EGPRS/DC-HSPA+/LTE modules.
SARA-G350 and SARA-G340 are respectively quad-band and dual-band full feature GSM/GPRS cellular modules
with a comprehensive feature set including an extensive set of internet protocols and access to u-blox GNSS
positioning chips and modules, with embedded A-GPS (AssistNow Online and AssistNow Offline) functionality.
SARA-G310 and SARA-G300 are respectively quad-band and dual-band GSM/GPRS cellular modules targeted for
high volume cost sensitive applications, providing GSM/GPRS functionalities with a reduced set of additional
features to minimize the customer’s total cost of ownership.
SARA-U2 series include variants supporting band combination for North America and band combination for
Europe, Asia and other countries. For each combination, a complete UMTS/GSM variant and a cost-saving
UMTS-only variant are available. All SARA-U2 series modules provide a rich feature set including an extensive set
of internet protocols, dual-stack IPv4 / IPv6 and access to u-blox GNSS positioning chips and modules, with
embedded A-GPS (AssistNow Online and AssistNow Offline) functionality.
Table 1 describes a summary of interfaces and features provided by SARA-G3 and SARA-U2 series modules.
Module Data rate Bands Interfaces Audio
Functions Grade
3G Up
-Link [Mb/s]
3G Down
-Link [Mb/s]
2G Up
-Link [kb/s]
2G Down
-Link [kb/s]
3G bands [MHz]
2G bands [MHz]
UART
USB
DDC
(I
2
C)
GPIO
Analog
audio
Digital audio
Network indication
Antenna
supervisor
Jamming detection
Embedded TCP
/ UDP
Embedded
HTTP, FTP
Embedded
SSL / TLS
GNSS via Modem
AssistNow
Software
CellLocate
®
FW update
via serial
FOTA
eCall / ERA
-GLONASS
Low power idle
-mode
Dual stack IPv4/IPv6
ATEX certification
Standard
Professional
Automotive
SARA-G300
42.8
85.6 900/1800
2 •
E
SARA-G310
42.8
85.6 4-band 2 •
E
SARA-G340
42.8
85.6 900/1800
2 1 4 1 1 • • • • • V • • • •
• •
SARA-G350
42.8
85.6 4-band 2 1 4 1 1 • • • • • V • • • • A
• •
SARA-G350 ATEX
42.8
85.6 4-band 2 1 4 1 1 • • • • • • • • •
• • •
SARA-U260 5.76
7.2
85.6
236.8
850/1900
850/1900
1 1 1 9 1 • • • • • • • • • •
• •
SARA-U270
5.76
7.2
85.6
236.8
900/2100
900/1800
1 1 1 9 1 • • • • • • • • • •
• • •
SARA-U270 ATEX
5.76
7.2
85.6
236.8
900/2100
900/1800
1 1 1 9 1 • • • • • • • • • •
• • • •
SARA-U280
5.76
7.2
850/1900
1 1 1 9 1 • • • • • • • • • •
• •
A = available upon request
V = available from product version “01” onwards
E = 32 kHz signal at EXT32K input pin is required for low power idle-mode
Table 1: SARA-G3 and SARA-U2 series
1
features summary
1
SARA-G350 ATEX modules provide the same feature set of the SARA-G350 modules plus the certification for use in potentially explosive
atmospheres; the same applies for SARA-U270 ATEX modules and SARA-U270 modules. Unless otherwise specified, SARA-G350 refers to all
SARA-G350 ATEX and SARA-G350 modules, whereas SARA-U270 refers to all SARA-U270 ATEX modules and SARA-U270 modules.
UBX-13000995 - R12 Early Production Information System description
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