SARA-G3 series
GSM/GPRS modules
Data Sheet
Abstract
Technical data sheet describing SARA-G3 series GSM/GPRS cellular
modules.
These modules are complete and cost efficient solutions offering
two-band or quad-band GSM/GPRS voice and/or data transmission
technology in a compact form factor.
www.u-blox.com
UBX-13000993 - R19
SARA-G3 series - Data Sheet
Document Information
Title
SARA-G3 series
Subtitle
GSM/GPRS modules
Document type
Data Sheet
Document number
UBX-13000993
Revision and date
R19
24-Apr-2017
Disclosure restriction
Product Status
Corresponding content status
Functional Sample
Draft
For functional testing. Revised and supplementary data will be published later.
In Development /
Prototype
Objective Specification
Target values. Revised and supplementary data will be published later.
Engineering Sample
Advance Information
Data based on early testing. Revised and supplementary data will be published later.
Initial Production
Early Prod. Information
Data from product verification. Revised and supplementary data may be published later.
Mass Production /
End of Life
Production Information
Final product specification.
This document applies to the following products:
Product name
Type number
Modem version
Application version
PCN reference
Product status
SARA-G300
SARA-G300-00S-01
08.58
A01.01
UBX-16010060
Mass Production
SARA-G310
SARA-G310-00S-01
08.58
A01.01
UBX-16010060
Mass Production
SARA-G340
SARA-G340-00S-00
08.49
N.A.
UBX-14000382
Mass Production
SARA-G340-01S-00
08.70
A00.02
UBX-14039634
Mass Production
SARA-G340-02S-00
08.90
A00.02
UBX-16001074
Mass Production
SARA-G340 ATEX
SARA-G340-02X-00
08.90
A00.02
UBX-16017766
Mass Production
SARA-G350
SARA-G350-00S-00
08.49
N.A.
GSM.G2-TN-13002
Mass Production
SARA-G350-01S-00
08.70
A00.02
UBX-14039634
Mass Production
SARA-G350-01B-00
08.70
A00.02
UBX-14039634
Mass Production
SARA-G350-02S-00
08.90
A00.02
UBX-16001074
Mass Production
SARA-G350-00X-00
08.49
N.A.
GSM.G2-TN-13002
Mass Production
SARA-G350 ATEX
u-blox reserves all rights to this document and the information contained herein. Products, names, logos and designs described herein may in
whole or in part be subject to intellectual property rights. Reproduction, use, modification or disclosure to third parties of this document or
any part thereof without the express permission of u-blox is strictly prohibited.
The information contained herein is provided “as is” and u-blox assumes no liability for the use of the information. No warranty, either
express or implied, is given, including but not limited, with respect to the accuracy, correctness, reliability and fitness for a particular purpose
of the information. This document may be revised by u-blox at any time. For most recent documents, please visit
www.u-blox.com.
Copyright © 2017, u-blox AG
u-blox® is a registered trademark of u-blox Holding AG in the EU and other countries.
Trademark Notice
Microsoft and Windows are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries.
All other registered trademarks or trademarks mentioned in this document are property of their respective owners.
UBX-13000993 - R19
Page 2 of 47
SARA-G3 series - Data Sheet
Contents
Contents.............................................................................................................................. 3
1
Functional description.................................................................................................. 5
1.1
1.2
1.3
1.4
1.5
1.6
2
Overview .............................................................................................................................................. 5
Product features ................................................................................................................................... 5
Block diagram....................................................................................................................................... 6
Product description ............................................................................................................................... 7
AT command support ........................................................................................................................... 8
Supported features ............................................................................................................................... 8
Interfaces .................................................................................................................... 11
2.1
Power management ........................................................................................................................... 11
2.1.1
Module supply input (VCC) ......................................................................................................... 11
2.1.2
RTC supply input/output (V_BCKP) .............................................................................................. 11
2.1.3
Digital I/O interfaces supply output (V_INT).................................................................................. 11
2.2
Antenna ............................................................................................................................................. 11
2.2.1
Antenna RF interface (ANT) ......................................................................................................... 11
2.2.2
Antenna detection (ANT_DET) ..................................................................................................... 11
2.3
System functions ................................................................................................................................ 12
2.3.1
Module power-on (PWR_ON) ...................................................................................................... 12
2.3.2
Module power-off ....................................................................................................................... 12
2.3.3
Module reset (RESET_N) .............................................................................................................. 12
2.3.4
External 32 kHz signal input (EXT32K) ......................................................................................... 12
2.3.5
Internal 32 kHz signal output (32K_OUT) .................................................................................... 12
2.4
SIM..................................................................................................................................................... 13
2.4.1
(U)SIM interface .......................................................................................................................... 13
2.4.2
SIM card detection (SIM_DET)...................................................................................................... 13
2.5
Serial interfaces .................................................................................................................................. 13
2.5.1
Asynchronous serial interface (UART) .......................................................................................... 14
2.5.2
Auxiliary asynchronous serial interface (AUX UART) ..................................................................... 15
2.5.3
DDC (I2C compatible) interface .................................................................................................... 15
2.6
Audio ................................................................................................................................................. 16
2.7
GPIO................................................................................................................................................... 16
3
Pin definition .............................................................................................................. 17
3.1
4
Pin assignment ................................................................................................................................... 17
Electrical specifications .............................................................................................. 22
4.1
Absolute maximum rating .................................................................................................................. 22
4.1.1
Maximum ESD ............................................................................................................................. 22
4.2
Operating conditions .......................................................................................................................... 23
4.2.1
Operating temperature range ...................................................................................................... 23
UBX-13000993 - R19
Contents
Page 3 of 47
SARA-G3 series - Data Sheet
4.2.2
4.2.3
4.2.4
4.2.5
4.2.6
4.2.7
4.2.8
4.2.9
4.2.10
4.2.11
4.2.12
4.2.13
Module thermal resistance .......................................................................................................... 23
Supply/Power pins ....................................................................................................................... 24
Current consumption .................................................................................................................. 25
RF performance ........................................................................................................................... 26
ANT_DET pin ............................................................................................................................... 26
PWR_ON pin ............................................................................................................................... 27
RESET_N pin ................................................................................................................................ 27
EXT32K pin ................................................................................................................................. 27
SIM pins ...................................................................................................................................... 28
Generic Digital Interfaces pins ..................................................................................................... 28
DDC (I2C) pins ............................................................................................................................. 31
Audio pins ................................................................................................................................... 31
5
Mechanical specifications .......................................................................................... 32
6
Qualification and approvals ...................................................................................... 33
6.1
Reliability tests .................................................................................................................................... 33
6.2
Approvals ........................................................................................................................................... 33
6.2.1
SARA-G3 series ........................................................................................................................... 33
6.2.2
SARA-G340 ATEX and SARA-G350 ATEX .................................................................................... 34
7
Product handling ........................................................................................................ 36
7.1
Packaging ........................................................................................................................................... 36
7.1.1
Reels ........................................................................................................................................... 36
7.1.2
Tapes .......................................................................................................................................... 37
7.2
Moisture sensitivity levels .................................................................................................................... 37
7.3
Reflow soldering ................................................................................................................................. 38
7.4
ESD precautions.................................................................................................................................. 38
8
9
Default settings .......................................................................................................... 39
Labeling and ordering information........................................................................... 40
9.1
9.2
9.3
Product labeling.................................................................................................................................. 40
Explanation of codes .......................................................................................................................... 42
Ordering information .......................................................................................................................... 43
Appendix .......................................................................................................................... 44
A Glossary ...................................................................................................................... 44
Related documents .......................................................................................................... 45
Revision history ................................................................................................................ 46
Contact .............................................................................................................................. 47
UBX-13000993 - R19
Contents
Page 4 of 47
SARA-G3 series - Data Sheet
1 Functional description
1.1
Overview
SARA-G3 series modules are versatile 2.5G GSM/GPRS cellular modules in a miniature LGA (Land Grid Array)
form factor. Featuring low power consumption, the SARA-G3 series combines baseband, RF transceiver, power
management unit, and power amplifier in a single, easy-to-integrate solution.
SARA-G3 modules provide a fully qualified and certified solution, reducing cost and enabling short time to
market. These modules are ideally suited for M2M applications such as: Automatic Meter Reading (AMR),
Remote Monitoring Automation and Control (RMAC), surveillance and security, eCall, road pricing, asset
tracking, fleet management, anti theft systems and Point of Sales (PoS) terminals.
SARA-G340 (dual-band) and SARA-G350 (quad-band) are full feature GSM/GPRS cellular modules with a
comprehensive feature set including an extensive set of internet protocols. The modules also provide fully
integrated access to u-blox GNSS positioning chips and modules, with embedded A-GPS (AssistNow Online and
AssistNow Offline) functionality. Any host processor connected to the cellular module through a single serial port
can control both the cellular module and the positioning chip / module.
SARA-G310 (quad-band) and SARA-G300 (dual-band) are 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. The SARA-G3 series’ compact form factor and LGA pads allow
fully automated assembly with standard pick & place and reflow soldering equipment for cost-efficient, highvolume production.
SARA-G300
•
SARA-G310
•
SARA-G340
•
•
•
•
•
2
4 •
• •
•
•
•
•
•
○
□
•
•
•
SARA-G340 ATEX
•
•
•
•
•
2
4 •
• •
•
•
•
•
•
○
□
•
•
•
SARA-G350
•
•
•
•
•
2
4 •
• •
•
•
•
•
•
○
□
•
•
•
SARA-G350 ATEX
•
•
•
•
•
2
4 •
• •
•
•
•
•
•
□
•
•
•
•
•
2
•
■
2
•
■
● = supported by all product versions
○ = supported by product versions “01” onwards
Table 1: SARA-G3 series – summary of modules’ main features
Standard
Professional
Automotive
ATEX certification
Low power idle-mode
eCall / ERA-GLONASS
Grade
FW update via serial interface
Dual stack IPv4/IPv6
Embedded SSL
Embedded FTP, HTTP, SMTP
Embedded TCP/UDP stack
Jamming detection
Features
Antenna supervisor
Audio
Network indication
Interfaces
Analog Audio
Digital Audio
CellLocate®
AssistNow Software
GNSS via modem
Positioning
GNSS receiver
GSM/GPRS 2-band 900/1800
Data
Bands
Rate
GPRS multi-slot class 10
Module
UART
SPI
USB 2.0
GPIO
DDC for u-blox GNSS receivers
Product features
GSM/GPRS 4-band
1.2
•
•
■ = 32 kHz signal at EXT32K input is required for low power idle-mode
□ = supported by product versions “02” onwards
1
1
SARA-G340 ATEX and SARA-G350 ATEX modules provide the same feature set as the SARA-G340 and SARA-G350 modules respectively,
with the additional certification for use in potentially explosive atmospheres. Unless otherwise specified, SARA-G340 refers to all
SARA-G340 ATEX and SARA-G340 modules; in the same way SARA-G350 refers to both SARA-G350 ATEX and SARA-G350 modules.
UBX-13000993 - R19
Functional description
Page 5 of 47
SARA-G3 series - Data Sheet
1.3
Block diagram
26 MHz
32 kHz
32 kHz
PA
ANT
Power-On
SAW
Filter
Switch
RF
Transceiver
Reset
SIM card
UART
Memory
Auxiliary UART
Baseband
VCC (Supply)
V_BCKP (RTC)
Power
Management
V_INT (I/O)
Figure 1: SARA-G300 and SARA-G310 block diagram
32.768 kHz
26 MHz
PA
ANT
Power-On
SAW
Filter
Switch
RF
Transceiver
Reset
SIM card
SIM card detection
UART
Memory
Auxiliary UART
Baseband
VCC (Supply)
V_BCKP (RTC)
DDC (for GPS/GNSS)
Analog Audio
Power
Management
V_INT (I/O)
Digital Audio
GPIO
Antenna detection
Figure 2: SARA-G340 and SARA-G350 block diagram
UBX-13000993 - R19
Functional description
Page 6 of 47
SARA-G3 series - Data Sheet
1.4
Product description
Item
SARA-G300
SARA-G310
SARA-G340
SARA-G350
GSM/GPRS Protocol Stack
3GPP Release 99
3GPP Release 99
3GPP Release 99
3GPP Release 99
Mobile Station Class
Class B
Class B
GSM/GPRS Bands
E-GSM 900 MHz
DCS 1800 MHz
GSM 850 MHz
E-GSM 900 MHz
DCS 1800 MHz
PCS 1900 MHz
E-GSM 900 MHz
DCS 1800 MHz
GSM 850 MHz
E-GSM 900 MHz
DCS 1800 MHz
PCS 1900 MHz
GSM/GPRS Power Class
Class 4 (33 dBm)
for 900 band
Class 1 (30 dBm)
for 1800 band
Class 4 (33 dBm)
for 850/900 bands
Class 1 (30 dBm)
for 1800/1900 bands
Class 4 (33 dBm)
for 900 band
Class 1 (30 dBm)
for 1800 band
Class 4 (33 dBm)
for 850/900 bands
Class 1 (30 dBm)
for 1800/1900 bands
Packet Switched Data Rate
GPRS multi-slot class 10
Coding scheme CS1-CS4
4
Up to 85.6 kb/s DL
4
Up to 42.8 kb/s UL
Circuit Switched Data Rate
Up to 9.6 kb/s DL/UL
Transparent mode
Non-transparent mode
Up to 9.6 kb/s DL/UL
Transparent mode
Non-transparent mode
Up to 9.6 kb/s DL/UL
Transparent mode
Non-transparent mode
Up to 9.6 kb/s DL/UL
Transparent mode
Non-transparent mode
Network Operation Modes
I to III
I to III
I to III
I to III
2
3
2
Class B
3
Class B
3
GPRS multi-slot class 10
Coding scheme CS1-CS4
4
Up to 85.6 kb/s DL
4
Up to 42.8 kb/s UL
4
2
GPRS multi-slot class 10
Coding scheme CS1-CS4
4
Up to 85.6 kb/s DL
4
Up to 42.8 kb/s UL
4
4
2
3
GPRS multi-slot class 10
Coding scheme CS1-CS4
4
Up to 85.6 kb/s DL
4
Up to 42.8 kb/s UL
4
Table 2: SARA-G3 series GSM/GPRS characteristics summary
The network automatically configures the channel encoding used by the module, depending on conditions and
the quality of the radio link between cell phone and base station. If the channel is very noisy, the network may
use the most robust coding scheme (CS-1) to ensure higher reliability. If the channel provides good conditions,
the network can use the least robust but fastest coding scheme (CS-4) to obtain optimum speed.
Basic features
Supplementary services
Display of Called Number
5
Call Hold/Resume (HOLD)
Indication of Call Progress Signals
5
Short Message Service (SMS)
5
Text and PDU mode supported
5
Call Waiting (CW)
Mobile-Originating SMS (MO SMS)
5
Country/PLMN Indication
Call Forwarding (CFU, CFB, CFNRy, CFNRc)
Country/PLMN Selection
Call Barring (BAOC, BOIC, BOIC-exHC, BAIC, BIC_Roam)
International Access Function
5
Call Deflection (CD)
Service Indicator
5
Explicit Call Transfer (ECT)
Emergency Calls Capabilities
5
Dual Tone Multi Frequency (DTMF)
Multi-Party (MTPY)
5
Mobile-Terminating SMS (MT SMS)
SMS during circuit-switched calls
5
5
SMS over PSD
5
Service Provider Indication
Connected Line Identification Presentation (CoLP)
Fixed Number Dialing
Connected Line Identification Restriction (CoLR)
5
ME-SIM lock
SMS storage on SIM
5
5
SMS storage on module memory
5
Concatenated SMS
Unstructured Supplementary Services Data (USSD)
Barring of Dialed Numbers
SIM Application Toolkit
5
SMS over CSD
Calling Line Identification Presentation (CLIP)
Calling Line Identification Restriction (CLIR)
Abbreviated Dialing
SMS indication and acknowledgement
SMS Cell Broadcast (CBS)
5
Subscription Identity Management
5
5
5
5
Advice of Charge Charging (AoCC, AoCI)
Calling Name Presentation (CNAP)
5
5
Network Identify and Time Zone (NITZ)
Table 3: SARA-G3 series mobile stations: basic features, supplementary services, and SMS service summary
6
2
Device can be attached to both GPRS and GSM services (i.e. Packet Switch and Circuit Switch mode) using one service at a time.
GPRS multi-slot class 10 implies a maximum of 4 slots in DL (reception) and 2 slots in UL (transmission) with 5 slots in total.
The maximum bit rate of the module depends on the current network settings.
5
Supported only by SARA-G340 and SARA-G350 modules
6
These functionalities are supported via AT commands (for more details see the u-blox AT Commands Manual [1]).
3
4
UBX-13000993 - R19
Functional description
Page 7 of 47
SARA-G3 series - Data Sheet
1.5
AT command support
The module supports AT commands according to 3GPP standards: TS 27.007 [9], 27.005 [10], 27.010 [11], and
the u-blox AT command extension.
For the complete list of the supported AT commands and their syntax, see the document u-blox AT
Commands Manual [1].
RIL (Radio Interface Layer) software for Android and Embedded Windows is available for SARA-G3 modules free
of charge; see the Android RIL Production delivery [6] and the Windows Embedded RIL Production delivery [7]
application notes for more information.
1.6
Supported features
Table 4 describes the main features supported by SARA-G3 modules. For more details, see the SARA-G3 /
SARA-U2 Series System Integration Manual [2] and u-blox AT commands manual [1].
Feature
Module
Description
Network Indication
SARA-G340 /
SARA-G350
GPIO configured to indicate the network status: registered home network, registered
roaming, voice or data call enabled, no service.
The network indication feature can be enabled through a custom AT command (see the
u-blox AT commands manual [1], +UGPIOC AT command).
Antenna Detection
SARA-G340 /
SARA-G350
The ANT_DET pin provides antenna presence detection capability, evaluating the
resistance from the ANT pin to GND by means of an external antenna detection circuit
implemented on the application board.
The antenna detection feature can be enabled through a custom AT command (see the
u-blox AT commands manual [1], +UANTR AT command).
Jamming detection
SARA-G340 /
SARA-G350
Detects “artificial” interference that obscures the operator’s carriers providing access to
the GSM service and reports the start and stop of such conditions to the application
processor (AP). The AP can react appropriately, e.g. by switching off the radio transceiver
to reduce power consumption and monitoring the environment at constant periods.
The jamming detection feature can be enabled and configured through a custom AT
command (see the u-blox AT commands manual [1], +UCD AT command).
Jamming condition
7
indication over GPIO
SARA-G340 /
SARA-G350
The jamming condition can be reported by a GPIO of the module as enabled and
configured through a custom AT commands (see the u-blox AT commands manual [1],
+UCD and +UGPIOC AT commands).
SARA-G340 /
SARA-G350
AT command mode available on both the UART and the Auxiliary UART interfaces.
See the u-blox AT Commands Manual [1], +USIO AT command for further details
regarding serial interfaces configuration selection.
SARA-G340 /
SARA-G350
Embedded TCP/IP and UDP/IP stack including direct link mode for TCP and UDP sockets.
The sockets can be configured in Direct Link mode to establish a transparent end-to-end
communication with an already connected TCP or UDP socket via serial interface.
SARA-G340 /
SARA-G350
File Transfer Protocol as well as Secure File Transfer Protocol (SSL encryption of FTP control
channel) functionalities are supported via AT commands.
SARA-G340 /
SARA-G350
Hyper-Text Transfer Protocol as well as Secure Hyper-Text Transfer Protocol (SSL
encryption) functionalities are supported via AT commands. HEAD, GET, POST, DELETE
and PUT operations are available. Up to 4 client contexts can be simultaneously used.
Second AT interface
7
Embedded TCP/IP and
UDP/IP
8
FTP, FTPS
HTTP, HTTPS
7
8
8
Supported by “02” product versions onwards
FTPS and HTTPS supported by “01” product versions onwards
UBX-13000993 - R19
Functional description
Page 8 of 47
SARA-G3 series - Data Sheet
Feature
Module
Description
SARA-G340 /
SARA-G350
With the support of X.509 certificates, Embedded TLS 1.2 provides server and client
authentication, data encryption, data signature and enables TCP/IP applications like HTTPS
and FTPS to communicate over a secured and trusted connection.
The feature can be configured and enabled by +USECMNG and +USECPRF AT commands.
SARA-G340 /
SARA-G350
Capability to move between IPv4 and dual stack network infrastructures. IPv4 and IPv6
addresses can be used.
GPS/GNSS via Modem
SARA-G340 /
SARA-G350
Full access to u-blox positioning chips and modules is available through a dedicated DDC
2
(I C) interface. A single serial port from any host processor can control both the cellular
module and the positioning chips / modules.
For more details see the GNSS Implementation Application Note [3].
AssistNow Software
SARA-G340 /
SARA-G350
Embedded AssistNow Online and AssistNow Offline clients to provide full developed to
provide better GNSS performance and faster Time-to-First-Fix. The clients can be enabled /
disabled with an AT command.
CellLocate
SARA-G340 /
SARA-G350
Enables the estimation of device position based on the parameters of the mobile network
®
cells visible to the specific device based on the CellLocate database:
Normal scan: parameters of the visible home network cells are only sent
Deep scan: parameters of all surrounding cells of all mobile operators are sent
®
®
CellLocate is implemented using a set of AT commands for CellLocate service
configuration and position request.
Hybrid Positioning
SARA-G340 /
SARA-G350
Provides the module’s current position using a u-blox positioning chip or module or the
®
estimated position from CellLocate , depending on which positioning method provides the
best and fastest solution according to the user configuration.
Hybrid positioning is implemented through a set of AT commands that allow the
configuration and the position request.
Firmware update Over
AT commands (FOAT)
All
Firmware module upgrade over the UART interface using AT command.
SARA-G340 /
SARA-G350
Bearer Independent Protocol for Over-the-Air SIM provisioning. The data transfer to/from
the SIM uses either an already active PDP context or a new PDP context established with
the APN provided by the SIM card.
In-Band modem
SARA-G340 /
SARA-G350
In-Band modem solution for eCall and ERA-GLONASS emergency call applications over
cellular networks implemented according to the 3GPP TS 26.267 specification [12].
When activated, the in-vehicle eCall / ERA-GLONASS system (IVS) creates an emergency
call carrying both voice and data (including vehicle position data) directly to the nearest
Public Safety Answering Point (PSAP) to determine whether rescue services should be
dispatched to the known position.
DTMF decoder
SARA-G340 /
SARA-G350
During a voice call, the Dual-Tone Multi-Frequency detector analyses the RX speech
(coming from remote party). The detected DTMF symbols can be output via related URC.
For more details, see the +UDTMFD AT command.
Automatic selection of
9
authentication type
SARA-G340 /
SARA-G350
Automatic selection of authentication type during PDP context activation. The module will
sequentially try different authentication protocols (none/CHAP/PAP) until the
authentication succeeds.
The feature can be enabled through the +UPSD and +UAUTHREQ AT commands.
Signal quality report
9
for PS calls
SARA-G340 /
SARA-G350
The quality of the GPRS UL and/or DL connection is returned by the AT+CSQ command.
Network Friendly
9
Mode
SARA-G340 /
SARA-G350
When the Network Friendly Mode is enabled, the module reacts to service request denials
by using time-spaced, randomized or delayed retry schemes according to GSMA IoT
Device Connection Efficiency Guidelines [13].
The feature can be enabled through the +UNFM, +UNFMCONF, +URPM AT commands.
Embedded TLS 1.2
7
IPv4/IPv6 dual-stack
9
®
BIP
9
9
Supported by “02” product versions onwards
UBX-13000993 - R19
Functional description
Page 9 of 47
SARA-G3 series - Data Sheet
Feature
Module
Description
Smart Temperature
Supervisor
SARA-G340 /
SARA-G350
Constant monitoring of the module board temperature:
Warning notification when the temperature approaches an upper or lower
predefined threshold
Shutdown notified and forced when the temperature value is outside the specified
range (shutdown suspended in case of an emergency call in progress)
The Smart Temperature Supervisor feature can be enabled or disabled through an AT
command (see the u-blox AT commands manual [1], +USTS AT command)
The sensor measures board temperature inside the shields, which can differ from
ambient temperature.
Power saving
All
The power saving configuration is by default disabled, but it can be configured using an
AT command. When power saving is enabled, the module automatically enters the low
power idle-mode whenever possible, reducing current consumption.
During idle-mode, the module processor core runs with the RTC 32 kHz reference clock,
which is generated by:
The internal 32 kHz oscillator, in case of SARA-G340 and SARA-G350 modules
The 32 kHz signal provided at the EXT32K input pin, in case of SARA-G300 and
SARA-G310 modules
For more details, see the SARA-G3 / SARA-U2 Series System Integration Manual [2] and
the u-blox AT commands manual [1], +UPSV AT command.
Table 4: SARA-G3 series’ main supported features
u-blox is extremely mindful of user privacy. When a position is sent to the CellLocate® server, u-blox is
unable to track the SIM used or the specific device.
UBX-13000993 - R19
Functional description
Page 10 of 47
SARA-G3 series - Data Sheet
2 Interfaces
2.1
Power management
2.1.1 Module supply input (VCC)
SARA-G3 modules must be supplied through the three VCC pins by a DC power supply. Voltages must be stable:
during operation, the current drawn from VCC can vary by some order of magnitude, especially due to the
surging consumption profile of the GSM system (described in the SARA-G3 / SARA-U2 Series System Integration
Manual [2]). It is important that the system power supply circuit is able to support peak power.
SARA-G3 modules product versions “02” onwards provide separate supply inputs over the three VCC pins:
VCC pins #52 and #53 represent the supply input for the internal RF power amplifier, demanding most of
the total current drawn of the module when RF transmission is enabled during a voice/data call
VCC pin #51 represents the supply input for the internal baseband Power Management Unit and the internal
transceiver, demanding minor part of the total current drawn of the module when RF transmission is
enabled during a voice/data call
2.1.2 RTC supply input/output (V_BCKP)
V_BCKP is the Real Time Clock (RTC) supply of SARA-G3 modules. When VCC voltage is within the valid
operating range, the internal Power Management Unit (PMU) supplies the RTC and the same supply voltage is
available on V_BCKP pin. If the VCC voltage is under the minimum operating limit (e.g. during not powered
mode), the V_BCKP pin can externally supply the RTC.
2.1.3 Digital I/O interfaces supply output (V_INT)
SARA-G3 modules provide an internally generated supply rail output for digital interfaces (V_INT). This can be
used in place of an external discrete regulator to supply pull-up resistors on the DDC interface. This optimizes the
bill of material for various applications, e.g. with u-blox positioning modules operating at 1.8 V.
2.2
Antenna
2.2.1 Antenna RF interface (ANT)
The ANT pin has an impedance of 50 and provides the RF antenna interface of SARA-G3 modules.
2.2.2 Antenna detection (ANT_DET)
The ANT_DET pin is an Analog to Digital Converter (ADC) input provided only by SARA-G340 and SARA-G350
modules to sense the antenna presence (as optional feature), evaluating the resistance from the ANT pin to GND
by means of an external antenna detection circuit implemented on the application board. (For more details, see
SARA-G3 / SARA-U2 Series System Integration Manual [2] and u-blox AT Commands Manual [1], +UANTR.)
UBX-13000993 - R19
Interfaces
Page 11 of 47
SARA-G3 series - Data Sheet
2.3
System functions
2.3.1 Module power-on (PWR_ON)
SARA-G3 modules can be switched on in one of the following ways:
Rising edge on the VCC pin to a valid voltage for module supply, i.e. applying module supply
Low level on the PWR_ON input pin, i.e. forcing the pin (normally high with external pull-up) to a low level
for a valid time period (see section 4.2.7). The PWR_ON pin requires an external pull-up resistor to set its
value to logic high and may not be left floating
RTC alarm, i.e. pre-programmed scheduled time (see the u-blox AT Commands Manual [1], AT+CALA)
SARA-G300 and SARA-G310 cannot be switched on with RTC alarm.
2.3.2 Module power-off
SARA-G3 modules can be properly switched off, with storage of current settings and network detach, by:
AT+CPWROFF command
An abrupt under-voltage shutdown occurs on SARA-G3 modules when the VCC supply drops below the
extended operating range minimum limit, but in this case it is not possible to perform the storing of the current
parameter settings in the module’s non-volatile memory as well as the proper network detach.
An over-temperature or an under-temperature shutdown occurs on SARA-G3 modules when the temperature
measured within the cellular module reaches the dangerous area, if the optional Smart Temperature Supervisor
feature is enabled and configured by the dedicated AT command. For more details see the SARA-G3 / SARA-U2
Series System Integration Manual [2] and u-blox AT commands manual [1], +USTS AT command.
2.3.3 Module reset (RESET_N)
SARA-G3 modules can be properly reset (rebooted), with storage of current parameter settings in the module’s
non-volatile memory and proper network detach, in this way:
AT+CFUN command (see the u-blox AT Commands Manual [1]). This causes an “internal” or “software”
reset of the module.
An abrupt “external” or “hardware” reset occurs when a low level is applied to the RESET_N pin, which is
normally set high by an internal pull-up, for a valid time period (see section 4.2.8), but in this case it is not
possible to perform the storing of the current parameter settings as well as the proper network detach.
2.3.4 External 32 kHz signal input (EXT32K)
SARA-G300 and SARA-G310 provide the EXT32K input pin that must be fed by a proper 32 kHz signal to
furnish the reference clock for the RTC, allowing very low power idle-mode and RTC functions support. (See
section 4.2.9 for detailed electrical specifications for the 32 kHz signal.)
SARA-G340 and SARA-G350 do not provide the EXT32K input pin. An internal 32 kHz oscillator automatically
generates the reference clock for the RTC, allowing very low power idle-mode and RTC functions support.
2.3.5 Internal 32 kHz signal output (32K_OUT)
SARA-G300 and SARA-G310 provide the 32K_OUT output pin which gives a 32 kHz reference signal suitable
only to feed the EXT32K input pin of SARA-G300 / SARA-G310 modules, furnishing the reference clock for the
RTC, allowing low power idle-mode and RTC functions support with modules switched on.
SARA-G340 and SARA-G350 do not provide the 32K_OUT output; there is no EXT32K input on these modules.
UBX-13000993 - R19
Interfaces
Page 12 of 47
SARA-G3 series - Data Sheet
2.4
SIM
2.4.1 (U)SIM interface
A (U)SIM card interface is available via the VSIM, SIM_IO, SIM_CLK, SIM_RST pins of SARA-G3 series modules:
the high-speed SIM/ME interface is implemented as well as the automatic detection of the required SIM
supporting voltage.
Both 1.8 V and 3 V SIM types are supported: activation and deactivation with automatic voltage switch from
1.8 V to 3 V are implemented, according to ISO-IEC 7816-3 Specifications. The SIM driver supports the PPS
procedure for baud-rate selection, according to the values proposed by the SIM Card.
2.4.2 SIM card detection (SIM_DET)
Not supported by SARA-G300-00S and SARA-G310-00S modules.
The SIM_DET pin of SARA-G3 modules is a digital input provided to sense the SIM card presence (as an optional
feature), when it is properly connected to the mechanical switch of the SIM card holder (for more details see the
SARA-G3 / SARA-U2 Series System Integration Manual [2]).
2.5
Serial interfaces
SARA-G3 modules provide the following serial communication interfaces:
UART interface: 9-wire unbalanced 1.8 V asynchronous serial interface supporting
AT command mode
Data mode and Online command mode10
MUX functionality, including dedicated GNSS tunneling virtual channel11
FW upgrades by means of the FOAT feature
Auxiliary UART interface: 3-wire unbalanced 1.8 V asynchronous serial interface supporting
AT command mode12
GNSS tunneling12
FW upgrades by means of the u-blox EasyFlash tool
Trace log capture (diagnostic purpose)
DDC interface13: I2C-bus compatible interface supporting
Communication with u-blox GPS/GNSS positioning chips / modules
10
See the u-blox AT Commands Manual [1] for the definition of the interface data mode and online command mode.
GNSS tunneling is not supported by SARA-G300 and SARA-G310 modules.
12
AT command mode and GNSS tunneling are not supported over the Auxiliary UART of SARA-G3 modules product versions “00” and “01”.
13
2
DDC I C-bus compatible interface is not supported by SARA-G300 and SARA-G310 modules.
11
UBX-13000993 - R19
Interfaces
Page 13 of 47
SARA-G3 series - Data Sheet
2.5.1 Asynchronous serial interface (UART)
The UART interface is a 9-wire unbalanced 1.8 V asynchronous serial interface provided on all SARA-G3 modules
for communication with an application processor, supporting:
AT command mode
Data mode and Online command mode14
MUX functionality, including dedicated GNSS tunneling virtual channel15
FW upgrades by means of the FOAT feature
UART characteristics are:
Complete serial port with RS-232 functionality conforming to the ITU-T V.24 Recommendation [8], with
CMOS compatible signal levels (0 V for low data bit or ON state and 1.8 V for high data bit or OFF state)
Data lines (RXD as output, TXD as input), hardware flow control lines (CTS as output, RTS as input), modem
status and control lines (DTR as input, DSR as output, DCD as output, RI as output) are provided
Hardware flow control (default value), software flow control, or none flow control are supported
Power saving indication available on the hardware flow control output (CTS line): the line is driven to the
OFF state when the module is not ready to accept data signals
2400, 4800, 9600, 19200, 38400, 57600, 115200 b/s baud rates are supported
Auto baud rate detection (autobauding) is the default configuration
Frame format can be: 8N1 (8 data bits, No parity, 1 stop bit), or 8N2 (8 data bits, No parity, 2 stop bits), or
8E1 (8 data bits, even parity, 1 stop bit), or 8O1 (8 data bits, odd parity, 1 stop bit), or 7E1 (7 data bits, even
parity, 1 stop bit), or 7O1 (7 data bits, odd parity, 1 stop bit)
Automatic frame recognition is supported: this feature is the default configuration and it is enabled in
conjunction with the auto baud rate detection only
Default frame configuration with fixed baud is 8N1 (8 data bits, No parity, 1 stop bit),
2.5.1.1 Multiplexer protocol
SARA-G3 module has a software layer with MUX functionality, 3GPP TS 27.010 [11], available on the UART
physical link.
This is a data link protocol (layer 2 of OSI model) which uses HDLC-like framing and operates between the
module (DCE) and the application processor (DTE), and allows a number of simultaneous sessions over the
physical link (UART): the user can concurrently use AT command interface on one MUX channel and data
communication on another MUX channel.
SARA-G340 and SARA-G350 modules define the following virtual channels:
Channel 0: control channel
Channel 1 – 5: AT commands / data connection
Channel 6: GNSS tunneling
SARA-G300 and SARA-G310 modules define the following virtual channels:
Channel 0: control channel
Channel 1 – 2: AT commands / data connection
For more details, see the Mux Implementation Application Note [4].
14
15
See the u-blox AT Commands Manual [1] for the definition of the interface data mode and online command mode.
GNSS tunneling is not supported by SARA-G300 and SARA-G310 modules.
UBX-13000993 - R19
Interfaces
Page 14 of 47
SARA-G3 series - Data Sheet
2.5.2 Auxiliary asynchronous serial interface (AUX UART)
The auxiliary UART interface is a 3-wire unbalanced 1.8 V asynchronous serial interface available on all SARA-G3
modules, supporting16
AT command mode17
GNSS tunneling mode17
FW upgrades by means of the u-blox EasyFlash tool
Trace log capture (diagnostic purpose)
Auxiliary UART characteristics are:
Only the RXD_AUX data output and the TXD_AUX data input are provided, with CMOS compatible signal
levels (0 V for low data bit or ON state and 1.8 V for high data bit or OFF state)
Characteristics in AT command mode17:
Baud rate can be: 2400, 4800, 9600, 19200, 38400, 57600, 115200 b/s, with default value 115200 b/s
Frame format can be: 8N1, or 8N2, or 8E1, or 8O1, or 7E1, or 7O1, with default value 8N1
Automatic baud rate detection (autobauding) and automatic frame recognition are not supported
Software flow control, or None flow control (default value) are supported
Characteristics in GNSS tunneling mode17:
Baud rate is 115200 b/s
Frame format is 8N1 (8 data bits, No parity, 1 stop bit)
None flow control is supported
Characteristics for FW upgrade and diagnostic trace modes:
115200, 230400, 460800, 921600 b/s baud rates are supported
Frame format is 8N1 (8 data bits, No parity, 1 stop bit)
None flow control is supported
2.5.3 DDC (I2C compatible) interface
SARA-G340 and SARA-G350 modules provide an I2C compatible DDC interface on the SCL and SDA pins
exclusively for the communication with u-blox GNSS positioning chips / modules.
16
17
See the u-blox AT Commands Manual [1], +USIO AT command for further details regarding serial interfaces configuration selection.
AT command mode and GNSS tunneling are not supported over the Auxiliary UART of SARA-G3 modules product versions “00” and “01”.
UBX-13000993 - R19
Interfaces
Page 15 of 47
SARA-G3 series - Data Sheet
2.6
Audio
SARA-G340 and SARA-G350 modules provide analog and digital audio interfaces:
Analog audio input:
Differential analog audio input (MIC_P, MIC_N) shared for all the analog audio path modes: the pins
can be connected to the output of an external analog audio device or can be connected to an external
microphone by means of a simple circuit implemented on the application board
Supply output for an external microphone (MIC_BIAS): the pin can provide the bias to an external
microphone by means of a simple circuit implemented on the application board
Local ground for the external microphone (MIC_GND): the pin can provide the reference for the
differential analog audio input as sense ground line for the external microphone circuit
Analog audio output:
Differential audio output (SPK_P, SPK_N) shared for all the analog audio path modes: the pins can be
connected to the input of an external analog audio device or can be connected to an external speaker
I2S digital audio interface:
4-wire digital audio interface (I2S_TXD, I2S_RXD, I2S_CLK, I2S_WA) that can be configured by AT
command in PCM or in normal I2S mode
For more details regarding audio interfaces configuration and usage see the u-blox AT Commands Manual [1]
and the SARA-G3 / SARA-U2 Series System Integration Manual [2].
2.7
GPIO
SARA-G340 and SARA-G350 modules provide 4 GPIO pins (GPIO1-GPIO4) that can be configured for general
purpose input/output, or to provide custom functions via u-blox AT commands (for further details, see the
SARA-G3 / SARA-U2 Series System Integration Manual [2] and to u-blox AT Commands Manual [1], +UGPIOC,
+UGPIOR, +UGPIOW, +UGPS, +UGPRF).
Table 5 summarizes the custom functions available on the GPIO pins of SARA-G340 / SARA-G350 modules.
Function
Description
Default GPIO
Configurable GPIOs
GNSS supply enable
Enable/disable the supply of u-blox positioning chips and
modules connected to cellular module
GPIO2
GPIO1, GPIO2,
GPIO3, GPIO4
GNSS data ready
Sense when u-blox positioning chip / module connected to
2
cellular module is ready for sending data by the DDC (I C)
GPIO3
GPIO3
GNSS RTC sharing
RTC (Real Time Clock) synchronization signal to u-blox
positioning chips and modules connected to cellular module
GPIO4
GPIO4
Network status indication
Indicates network status: registered home network, registered
roaming, data transmission, no service
--
GPIO1, GPIO2,
GPIO3, GPIO4
GSM Tx-burst indication
Indicates when a GSM Tx burst/slot occurs
--
GPIO1
Jamming condition indication
Indicates when a jamming condition occurs
--
GPIO1, GPIO2,
GPIO3, GPIO4
General purpose input
Input to sense high or low digital level
--
GPIO1, GPIO2,
GPIO3, GPIO4
General purpose output
Output to set the high or the low digital level
--
GPIO1, GPIO2,
GPIO3, GPIO4
Pad disabled
Tri-state with an internal active pull-down enabled
GPIO1
GPIO1, GPIO2,
GPIO3, GPIO4
Table 5: GPIO custom functions configuration
UBX-13000993 - R19
Interfaces
Page 16 of 47
SARA-G3 series - Data Sheet
3 Pin definition
GND
3
50
GND
V_INT
4
49
RSVD
GND
5
6
48
RSVD
DSR
RI
7
47
RSVD
DCD
8
46
DTR
9
RTS
10
CTS
11
TXD
12
RXD
13
GND
14
PWR_ON
ANT
GND
GND
GND
GND
GND
GND
VCC
51
VCC
50
GND
49
MIC_P
6
48
MIC_N
RI
7
47
MIC_GND
RSVD
DCD
8
46
MIC_BIAS
45
RSVD
DTR
9
45
SPK_N
44
RSVD
RTS
10
44
SPK_P
43
GND
CTS
11
43
GND
42
SIM_DET
TXD
12
42
SIM_DET
41
VSIM
RXD
13
41
VSIM
40
SIM_RST
GND
14
40
SIM_RST
15
39
SIM_IO
PWR_ON
15
39
SIM_IO
RSVD
16
38
SIM_CLK
GPIO1
16
38
SIM_CLK
RSVD
17
37
RSVD
RSVD
17
37
I2S_RXD
RESET_N
18
36
RSVD
RESET_N
18
36
I2S_CLK
RSVD
19
35
RSVD
RSVD
19
35
I2S_TXD
GND
20
34
RSVD
GND
20
34
I2S_WA
GND
21
33
RSVD
GND
21
33
RSVD
71
67
72
68
73
69
74
70
75
76
77
78
79
80
SARA-G300
SARA-G310
Top View
81
82
83
Pin 65-96: GND
85
86
91
87
92
88
93
89
94
TXD_AUX
RXD_AUX
RSVD
RSVD
RSVD
32K_OUT
RSVD
90
95
22 23 24 25 26 27 28 29
GND
84
96
30 31 32
65
66
71
67
72
68
73
69
74
70
75
76
77
78
79
80
SARA-G340
SARA-G350
Top View
81
82
83
84
Pin 65-96: GND
85
86
91
87
92
88
93
89
94
90
95
22 23 24 25 26 27 28 29
96
30 31 32
GND
VCC
GND
VCC
52
66
RSVD
51
ANT_DET
53
65
GND
2
GND
GND
GND
GND
ANT
V_BCKP
55 54
TXD_AUX
DSR
GND
VCC
56
RXD_AUX
5
GND
52
64 63 62 61 60 59 58 57
SCL
GND
GND
1
SDA
4
GND
GND
GPIO4
V_INT
GND
VCC
GPIO3
3
RSVD
53
GND
GND
55 54
GPIO2
2
56
GND
V_BCKP
64 63 62 61 60 59 58 57
EXT32K
1
GND
GND
GND
Pin assignment
GND
3.1
Figure 3: SARA-G3 series modules – pin assignments
UBX-13000993 - R19
Pin definition
Page 17 of 47
SARA-G3 series - Data Sheet
No
Module
Name
Power
domain
I/O
Description
Remarks
1
All
GND
-
N/A
Ground
All the GND pads must be connected to ground.
2
All
V_BCKP
-
I/O
Real Time Clock
supply input/output
V_BCKP = 2.3 V (typical) generated by the module
to supply the Real Time Clock when VCC supply
voltage is within valid operating range.
See section 4.2.3 for detailed electrical specs.
3
All
GND
-
N/A
Ground
All the GND pads must be connected to ground.
4
All
V_INT
-
O
Digital I/O Interfaces
supply output
V_INT = 1.8V (typical) generated by the module
when it is switched-on.
See section 4.2.3 for detailed electrical specs.
5
All
GND
-
N/A
Ground
All the GND pads must be connected to ground.
6
All
DSR
GDI
O
UART data set ready
Circuit 107 (DSR) in ITU-T V.24.
Output driver class A.
PU/PD class a. Value at reset: T/PU.
See section 4.2.11 for detailed electrical specs.
7
All
RI
GDI
O
UART ring indicator
Circuit 125 (RI) in ITU-T V.24.
Output driver class A.
PU/PD class b. Value at reset: T/PU.
See section 4.2.11 for detailed electrical specs.
8
All
DCD
GDI
O
UART data carrier
detect
Circuit 109 (DCD) in ITU-T V.24.
Output driver class A.
PU/PD class a. Value at reset: T/PU.
See section 4.2.11 for detailed electrical specs.
9
All
DTR
GDI
I
UART data terminal
ready
Circuit 108/2 (DTR) in ITU-T V.24.
Internal active pull-up to V_INT enabled.
PU/PD class b. Value at reset: T/PU.
See section 4.2.11 for detailed electrical specs.
10
All
RTS
GDI
I
UART ready to send
Circuit 105 (RTS) in ITU-T V.24.
Internal active pull-up to V_INT enabled.
PU/PD class c. Value at reset: T/PU.
See section 4.2.11 for detailed electrical specs.
11
All
CTS
GDI
O
UART clear to send
Circuit 106 (CTS) in ITU-T V.24.
Output driver class A.
PU/PD class c. Value at reset: T/PD.
See section 4.2.11 for detailed electrical specs.
12
All
TXD
GDI
I
UART transmitted
data
Circuit 103 (TxD) in ITU-T V.24.
Internal active pull-up to V_INT enabled.
PU/PD class a. Value at reset: T/PU.
See section 4.2.11 for detailed electrical specs.
13
All
RXD
GDI
O
UART received data
Circuit 104 (RxD) in ITU-T V.24.
Output driver class B.
PU/PD class a. Value at reset: T/PU.
See section 4.2.11 for detailed electrical specs.
14
All
GND
-
N/A
Ground
All the GND pads must be connected to ground.
15
All
PWR_ON
POS
I
Power-on input
The PWR_ON pin has high input impedance:
don’t leave it floating in noisy environment
(an external pull-up resistor is required).
See section 4.2.7 for detailed electrical specs.
16
SARA-G350
SARA-G340
GPIO1
GDI
I/O
GPIO
Configurable GPIO: see Table 5 for the available
custom functions.
Output driver class A.
PU/PD class b. Value at reset: T/PD.
See section 4.2.11 for detailed electrical specs.
SARA-G310
SARA-G300
RSVD
-
N/A
RESERVED pin
Pin disabled. Leave unconnected.
All
RSVD
-
N/A
RESERVED pin
Leave unconnected.
17
UBX-13000993 - R19
Pin definition
Page 18 of 47
SARA-G3 series - Data Sheet
No
Module
Name
Power
domain
I/O
Description
Remarks
18
All
RESET_N
ERS
I
Reset signal
A series Schottky diode is integrated in the module
as protection, and then an internal 10 k pull-up
resistor to V_INT is provided.
See section 4.2.8 for detailed electrical specs.
For more details regarding module reset, see [2].
19
All
RSVD
-
N/A
RESERVED pin
Leave unconnected.
20
All
GND
-
N/A
Ground
All the GND pads must be connected to ground.
21
All
GND
-
N/A
Ground
All the GND pads must be connected to ground.
22
All
GND
-
N/A
Ground
All the GND pads must be connected to ground.
23
SARA-G350
SARA-G340
GPIO2
GDI
I/O
GPIO
By default, the pin is configured to provide the
GNSS supply enable function.
Output driver class A.
PU/PD class b. Value at reset: T/PD.
See section 4.2.11 for detailed electrical specs.
SARA-G310
SARA-G300
RSVD
-
N/A
RESERVED pin
Pin disabled. Leave unconnected.
SARA-G350
SARA-G340
GPIO3
GDI
I/O
GPIO
By default, the pin is configured to provide the
GNSS data ready function.
Output driver class B.
PU/PD class c. Value at reset: T/PD.
See section 4.2.11 for detailed electrical specs.
SARA-G310
SARA-G300
32K_OUT
-
O
32 kHz output
32 kHz output suitable only to feed the EXT32K
input giving the RTC reference clock, allowing low
power idle-mode and RTC functions support.
SARA-G350
SARA-G340
GPIO4
GDI
I/O
GPIO
By default, the pin is configured to provide the
GNSS RTC sharing function.
Output driver class A.
PU/PD class b. Value at reset: T/PD.
See section 4.2.11 for detailed electrical specs.
SARA-G310
SARA-G300
RSVD
-
N/A
RESERVED pin
Pin disabled. Leave unconnected.
SARA-G350
SARA-G340
SDA
DDC
I/O
I C bus data line
Fixed open drain. No internal pull-up.
Value at reset: T.
See section 4.2.12 for detailed electrical specs.
SARA-G310
SARA-G300
RSVD
-
N/A
RESERVED pin
Pin disabled. Leave unconnected.
SARA-G350
SARA-G340
SCL
DDC
O
I C bus clock line
Fixed open drain. No internal pull-up.
Value at reset: T.
See section 4.2.12 for detailed electrical specs.
SARA-G310
SARA-G300
RSVD
-
N/A
RESERVED pin
Pin disabled. Leave unconnected.
28
All
RXD_AUX
GDI
O
Auxiliary UART
received data
Circuit 104 (RxD) in ITU-T V.24.
Output driver class B.
PU/PD class a. Value at reset: T/PU.
See section 4.2.11 for detailed electrical specs.
29
All
TXD_AUX
GDI
I
Auxiliary UART
transmitted data
Circuit 103 (TxD) in ITU-T V.24.
Internal active pull-up to V_INT enabled.
PU/PD class a. Value at reset: T/PU.
See section 4.2.11 for detailed electrical specs.
30
All
GND
-
N/A
Ground
All the GND pads must be connected to ground.
31
SARA-G350
SARA-G340
RSVD
-
N/A
RESERVED pin
Internally not connected. Leave unconnected.
SARA-G310
SARA-G300
EXT32K
-
I
32 kHz input
Input for RTC reference clock, needed to enter the
low power idle-mode and provide RTC functions.
See section 4.2.9 for detailed electrical specs.
32
All
GND
-
N/A
Ground
All the GND pads must be connected to ground.
33
All
RSVD
-
N/A
RESERVED pin
This pin must be connected to GND.
24
25
26
27
UBX-13000993 - R19
2
2
Pin definition
Page 19 of 47
SARA-G3 series - Data Sheet
No
34
Module
Name
Power
domain
I/O
Description
2
Remarks
SARA-G350
SARA-G340
I2S_WA
GDI
O
I S word alignment
Output driver class A.
PU/PD class c. Value at reset: T/PU.
See section 4.2.11 for detailed electrical specs.
SARA-G310
SARA-G300
RSVD
-
N/A
RESERVED pin
Pin disabled. Leave unconnected.
SARA-G350
SARA-G340
I2S_TXD
GDI
O
I S transmit data
Output driver class B.
PU/PD class c. Value at reset: T/PD.
See section 4.2.11 for detailed electrical specs.
SARA-G310
SARA-G300
RSVD
-
N/A
RESERVED pin
Pin disabled. Leave unconnected.
SARA-G350
SARA-G340
I2S_CLK
GDI
O
I S clock
Output driver class B.
PU/PD class a. Value at reset: T/PU.
See section 4.2.11 for detailed electrical specs.
SARA-G310
SARA-G300
RSVD
-
N/A
RESERVED pin
Pin disabled. Leave unconnected.
SARA-G350
SARA-G340
I2S_RXD
GDI
I
I S receive data
Internal active pull-down enabled.
PU/PD class a. Value at reset: T/PD.
See section 4.2.11 for detailed electrical specs.
SARA-G310
SARA-G300
RSVD
-
N/A
RESERVED pin
Pin disabled. Leave unconnected.
38
All
SIM_CLK
SIM
O
SIM clock
Value at reset: L.
See section 4.2.10 for detailed electrical specs.
39
All
SIM_IO
SIM
I/O
SIM data
Internal 4.7k pull-up to VSIM.
Value at reset: L.
See section 4.2.10 for detailed electrical specs.
40
All
SIM_RST
SIM
O
SIM reset
Value at reset: L.
See section 4.2.10 for detailed electrical specs.
41
All
VSIM
-
O
SIM supply output
VSIM = 1.80 V typical if SIM card = 1.8V type.
VSIM = 2.85 V typical if SIM card = 3.0V type.
See section 4.2.3 for detailed electrical specs.
42
All
SIM_DET
GDI
I
SIM detection
SIM card presence detection function.
PU/PD class a. Value at reset: T/PU.
See section 4.2.11 for detailed electrical specs.
43
All
GND
-
N/A
Ground
All the GND pads must be connected to ground.
44
SARA-G350
SARA-G340
SPK_P
AUDIO
O
Differential analog
audio output
(positive)
Differential analog audio output shared for all the
analog audio path modes.
See section 4.2.13 for detailed electrical specs.
SARA-G310
SARA-G300
RSVD
-
N/A
RESERVED pin
Leave unconnected.
SARA-G350
SARA-G340
SPK_N
AUDIO
O
Differential analog
audio output
(negative)
Differential analog audio output shared for all the
analog audio path modes.
See section 4.2.13 for detailed electrical specs.
SARA-G310
SARA-G300
RSVD
-
N/A
RESERVED pin
Leave unconnected.
SARA-G350
SARA-G340
MIC_BIAS
AUDIO
O
Microphone supply
output
Supply output for the external microphone.
See section 4.2.13 for detailed electrical specs.
SARA-G310
SARA-G300
RSVD
-
N/A
RESERVED pin
Leave unconnected.
SARA-G350
SARA-G340
MIC_GND
AUDIO
I
Microphone analog
reference
Local ground for the external microphone
(reference for the differential analog audio input).
See section 4.2.13 for detailed electrical specs.
SARA-G310
SARA-G300
RSVD
-
N/A
RESERVED pin
Leave unconnected.
SARA-G350
SARA-G340
MIC_N
AUDIO
I
Differential analog
audio input (negative)
Differential analog audio input shared for all the
analog audio path modes.
See section 4.2.13 for detailed electrical specs.
SARA-G310
SARA-G300
RSVD
-
N/A
RESERVED pin
Leave unconnected.
35
36
37
45
46
47
48
UBX-13000993 - R19
2
2
2
Pin definition
Page 20 of 47
SARA-G3 series - Data Sheet
No
Module
Name
Power
domain
I/O
Description
Remarks
49
SARA-G350
SARA-G340
MIC_P
AUDIO
I
Differential analog
audio input (positive)
Differential analog audio input shared for all the
analog audio path modes.
See section 4.2.13 for detailed electrical specs.
SARA-G310
SARA-G300
RSVD
-
N/A
RESERVED pin
Leave unconnected.
50
All
GND
-
N/A
Ground
All the GND pads must be connected to ground.
51
All
VCC
-
I
Module supply input
All VCC pins must be connected to external supply.
Supply input for internal BB PMU and transceiver on
SARA-G3 modules product versions ‘02’ onward.
See section 4.2.3, 4.2.4 for detailed electrical spec.
52
All
VCC
-
I
Module supply input
All VCC pins must be connected to external supply.
Supply input for the internal RF power amplifier on
SARA-G3 modules product versions ‘02’ onward.
See section 4.2.3, 4.2.4 for detailed electrical spec.
53
All
VCC
-
I
Module supply input
All VCC pins must be connected to external supply.
Supply input for the internal RF power amplifier on
SARA-G3 modules product versions ‘02’ onward.
See section 4.2.3, 4.2.4 for detailed electrical spec.
54
All
GND
-
N/A
Ground
All the GND pads must be connected to ground.
55
All
GND
-
N/A
Ground
All the GND pads must be connected to ground.
56
All
ANT
-
I/O
RF antenna
50 nominal impedance
See section 4.2.5 for detailed electrical specs.
57
All
GND
-
N/A
Ground
All the GND pads must be connected to ground.
58
All
GND
-
N/A
Ground
All the GND pads must be connected to ground.
59
All
GND
-
N/A
Ground
All the GND pads must be connected to ground.
60
All
GND
-
N/A
Ground
All the GND pads must be connected to ground.
61
All
GND
-
N/A
Ground
All the GND pads must be connected to ground.
62
SARA-G350
SARA-G340
ANT_DET
ADC
I
Antenna detection
Antenna presence detection function.
See section 4.2.6 for detailed electrical specs.
SARA-G310
SARA-G300
RSVD
-
N/A
RESERVED pin
Leave unconnected.
63
All
GND
-
N/A
Ground
All the GND pads must be connected to ground.
64
All
GND
-
N/A
Ground
All the GND pads must be connected to ground.
65-96
All
GND
-
N/A
Ground
All the GND pads must be connected to ground.
Table 6: SARA-G3 series module pin-out
For more information about pin-out, see the SARA-G3 / SARA-U2 Series System Integration Manual [2].
For an explanation of abbreviations and terms used, see Appendix A.
UBX-13000993 - R19
Pin definition
Page 21 of 47
SARA-G3 series - Data Sheet
4 Electrical specifications
Stressing the device above one or more of the ratings listed in the Absolute Maximum Rating
section may cause permanent damage. These are stress ratings only. Operating the module at
these or at any conditions other than those specified in the Operating Conditions sections
(chapter 4.2) of the specification should be avoided. Exposure to Absolute Maximum Rating
conditions for extended periods may affect device reliability.
Operating conditions ranges define those limits within which the functionality of the device is guaranteed.
Where application information is given, it is advisory only and does not form part of the specification.
4.1
Absolute maximum rating
Limiting values given below are in accordance with the Absolute Maximum Rating System (IEC 134).
Symbol
Description
Condition
Min
Max
Unit
VCC
Module supply voltage
Input DC voltage at VCC pins
-0.15
5.5
V
V_BCKP
RTC supply voltage
Input DC voltage at V_BCKP pin
-0.15
2.5
V
GDI
Generic digital interfaces
Input DC voltage at Generic digital interfaces pins
-0.15
2.2
V
DDC
DDC interface
Input DC voltage at DDC interface pins
-0.15
3.6
V
SIM
SIM interface
Input DC voltage at SIM interface pins
-0.30
3.6
V
ERS
External reset signal
Input DC voltage at RESET_N pin
-0.15
6.0
V
POS
Power-on signal
Input DC voltage at PWR_ON pin
-0.15
6.0
V
AUDIO
Audio pins
Input DC voltage at Audio pins
-0.15
3.0
V
ADC
Antenna detection pin
Input DC voltage at ANT_DET pin
-0.15
3.0
V
P_ANT
Antenna power
Input RF power at ANT pin
-8
dBm
Rho_ANT
Antenna ruggedness
Output RF load mismatch ruggedness at ANT pin
20:1
VSWR
Tstg
Storage temperature range
+85
°C
-40
Table 7: Absolute maximum ratings
The product is not protected against overvoltage or reversed voltages. If necessary, voltage
spikes exceeding the power supply voltage specification, given in table above, must be limited
to values within the specified boundaries by using appropriate protection devices.
4.1.1 Maximum ESD
Parameter
Min
Typical
Max
Unit
Remarks
ESD sensitivity for all pins except ANT pin
1000
V
Human Body Model according to JESD22-A114
ESD sensitivity for ANT pin
1000
V
Human Body Model according to JESD22-A114
ESD immunity for ANT pin
4000
V
Contact Discharge according to IEC 61000-4-2
8000
V
Air Discharge according to IEC 61000-4-2
Table 8: Maximum ESD ratings
u-blox cellular modules are Electrostatic Sensitive Devices (ESD) and require special precautions
when handling. See Section 7.4 for ESD handling instructions.
UBX-13000993 - R19
Electrical specifications
Page 22 of 47
SARA-G3 series - Data Sheet
4.2
Operating conditions
Unless otherwise specified, all operating condition specifications are at an ambient temperature of 25°C.
Operation beyond the operating conditions is not recommended and extended exposure
beyond them may affect device reliability
4.2.1 Operating temperature range
Symbol
Parameter
Module
Min
Typical
Max
Units
Topr
Operating temperature range
All
-40
+25
+85
°C
Remarks
All
-30
+85
°C
Normal operating range
see chapter 4.2.1.1
All
-40
+85
°C
Extended operating range
see chapter 4.2.1.2
Table 9: Environmental conditions
4.2.1.1 Normal operating temperature range
SARA-G3 series modules are fully functional and meet 3GPP specifications across the specified temperature
range.
4.2.1.2 Extended operating temperature range
SARA-G3 series modules are fully functional across the specified temperature range. RF performance may be
affected outside the normal operating temperature range.
4.2.2 Module thermal resistance
Symbol
Parameter
Rth,M-A
Module-to-Ambient
thermal resistance
Rth,M-C
Module-to-Case
thermal resistance
Min
Typical
Max
Unit
Remarks
10.6
°C/W
Thermal resistance from the module internal temperature
sensor to the ambient, with the module mounted on a
79 mm x 62 mm x 1.41 mm 4-Layers PCB with a high
coverage of copper in still air conditions
1.7
°C/W
Thermal resistance from the module internal temperature
sensor to the module case, evaluated as the thermal
resistance from the module internal temperature sensor to
the ambient, with the module mounted on a 79 mm x
62 mm x 1.41 mm 4-Layers PCB with a high coverage of
copper, with a robust aluminum heat-sink on the back of
the application board, with forced air ventilation.
Table 10: SARA-G3 series modules thermal resistance
UBX-13000993 - R19
Electrical specifications
Page 23 of 47
SARA-G3 series - Data Sheet
4.2.3 Supply/Power pins
Symbol
Parameter
VCC
ICC_PEAK
Module supply normal operating voltage
21
18
Min
Typical
Max
Unit
3.35
3.80
4.50
V
Module supply extended operating voltage
19
3.00
4.50
V
Module supply extended operating voltage
20
2.80
4.50
V
1.60
A
Module peak of current consumption through all the VCC pins,
during a GSM 1-slot transmit burst at maximum power level,
with a mismatched antenna
1.90
A
Module peak of current consumption through the VCC pin #51
of SARA-G3 modules product versions “02” onwards
300
mA
2.40
V
1.50
Module peak of current consumption through all the VCC pins,
during a GSM 1-slot transmit burst at maximum power level,
with a matched antenna
V_BCKP
Real Time Clock Supply input voltage
I_BCKP
Real Time Clock Supply average current consumption,
at V_BCKP = 2.3 V
1.00
2.30
2.00
µA
Table 11: Input characteristics of Supply/Power pins
Symbol
Parameter
Min
Typical
Max
Unit
VSIM
SIM Supply
1.76
1.80
1.84
V
2.78
2.85
2.91
V
2.19
2.30
2.42
V
2
mA
1.85
V
V_BCKP
Real Time Clock Supply output voltage
I_BCKP
Real Time Clock Supply output current capability
V_INT
Digital I/O Interfaces supply output voltage
V_INT_RIPPLE
Digital I/O Interfaces supply output peak-to-peak voltage ripple
during active or connected mode
15
mV
Digital I/O Interfaces supply output peak-to-peak voltage ripple
during low power idle mode with power saving enabled
90
mV
Digital I/O Interfaces supply output current capability
70
mA
I_INT
1.75
1.80
Table 12: Output characteristics of Supply/Power pins
18
The input voltage at all the VCC must be above the normal operating range minimum limit to switch-on the module. Module is still fully
functional when the input voltage at the VCC pins drops below the herein stated normal operating range minimum limit, but RF
performance may be affected.
19
Range defined for all the VCC pins of product versions “00” and “01”, and the VCC pin #51 (supply input for internal baseband Power
Management Unit and the internal transceiver) of product versions “02” onwards. Module may switch off when the input voltage at the
related pins drops below the herein stated extended operating range minimum limit.
20
Range defined for the VCC pins #52 and #53 (supply input for the internal power amplifier) of product versions “02” onwards.
21
Use this figure to dimension maximum current capability of power supply.
UBX-13000993 - R19
Electrical specifications
Page 24 of 47
SARA-G3 series - Data Sheet
4.2.4 Current consumption
Mode
Module
Band
Condition
Power Off Mode
All
Min
Typ
Max
Unit
-
Module is switched off by AT+CPWROFF
36
40
µA
Idle-Mode
SARA-G300
(Power Saving enabled by AT+UPSV, SARA-G310
module in low power idle-mode,
equivalent to +CFUN=4 or +COPS=2)
-
Averaged current over a 100-ms period,
EXT32K fed by external 32.768 kHz signal
0.3
0.4
mA
Averaged current over a 100-ms period,
EXT32K fed by 32K_OUT output signal
3.9
4.0
mA
SARA-G340
SARA-G350
-
Averaged current over a 100-ms period
0.3
0.4
mA
SARA-G300
SARA-G310
All
Averaged current over a 10-minute period,
22
DRX = 9 , AT+UPSV=2
EXT32K fed by external 32.768 kHz signal
0.6
0.8
mA
Averaged current over a 10-minute period,
22
DRX = 9 , AT+UPSV=2
EXT32K fed by 32K_OUT output signal
4.2
4.4
mA
Averaged current over a 10-minute period,
23
DRX = 5 , AT+UPSV=1
EXT32K fed by external 32.768 kHz signal
0.9
1.1
mA
Averaged current over a 10-minute period,
23
DRX = 5 , AT+UPSV=1
EXT32K fed by 32K_OUT output signal
4.5
4.7
mA
Averaged current over a 10-minute period,
22
DRX = 9 , AT+UPSV=2
0.6
0.8
mA
Averaged current over a 10-minute period,
23
DRX = 5 , AT+UPSV=1
0.9
1.1
mA
Averaged current over a 10-minute period,
23
DRX = 5 , AT+UPSV=0 (default)
EXT32K fed by external 32.768 kHz signal
4.2
4.4
mA
Averaged current over a 10-minute period,
23
DRX = 5 , AT+UPSV=0 (default)
EXT32K fed by 32K_OUT output signal
4.5
4.7
mA
Averaged current over a 10-minute period,
23
DRX = 5 , AT+UPSV=0 (default)
EXT32K not fed
18.0
18.2
mA
Cyclic Idle/Active-Mode
(Power Saving enabled by AT+UPSV,
Module registered with network)
SARA-G340
SARA-G350
Active-Mode
(Power Saving disabled by AT+UPSV,
Module registered with network)
GSM Connected Mode
(Call enabled)
GPRS Connected Mode
(Call enabled)
Table 13: VCC current consumption
SARA-G300
SARA-G310
All
All
SARA-G340
SARA-G350
All
Averaged current over a 10-minute period,
23
24
DRX = 5 , AT+UPSV=0 (default)
2.9
3.1
mA
All
850,
900
Averaged current over a 10-second period,
1 Tx + 1 Rx slot
Maximum Tx power (32.2 dBm typ.)
200
250
mA
1800, Averaged current over a 10-second period,
1900 1 Tx + 1 Rx slot
Maximum Tx power (29.2 dBm typ.)
150
200
mA
850,
900
Averaged current over a 10-second period,
2 Tx + 3 Rx slots
Maximum Tx power (30.5 dBm typ.)
300
350
mA
1800, Averaged current over a 10-second period,
1900 2 Tx + 3 Rx slots
Maximum Tx power (27.5 dBm typ.)
210
260
mA
All
25
22
Module is registered with the network, with a paging period of 2.12 s (2G network DRX setting = 9), with none neighbour cell.
Module is registered with the network, with a paging period of 1.18 s (2G network DRX setting = 5), with 16 neighbour cells.
24
18.2 mA typical, 18.4 mA maximum for SARA-G340 and SARA-G350 modules product versions “00”
25
Averaged values for module current consumption through VCC pins in the listed modes/conditions
23
UBX-13000993 - R19
Electrical specifications
Page 25 of 47
SARA-G3 series - Data Sheet
4.2.5 RF performance
Parameter
Min
Max
Unit
Remarks
Frequency range
GSM 850
Uplink
824
849
MHz
Module transmit
Downlink
869
894
MHz
Module receive
Frequency range
E-GSM 900
Uplink
880
915
MHz
Module transmit
Downlink
925
960
MHz
Module receive
Frequency range
DCS 1800
Uplink
1710
1785
MHz
Module transmit
Downlink
1805
1880
MHz
Module receive
Frequency range
PCS 1900
Uplink
1850
1910
MHz
Module transmit
Downlink
1930
1990
MHz
Module receive
Typical
Max
Table 14: Operating RF frequency bands
Parameter
Min
Unit
Remarks
Receiver input sensitivity
GSM 850
-109
dBm
Downlink RF level @ BER Class II < 2.4 %
Receiver input sensitivity
E-GSM 900
-109
dBm
Downlink RF level @ BER Class II < 2.4 %
Receiver input sensitivity
DCS 1800
-109
dBm
Downlink RF level @ BER Class II < 2.4 %
Receiver input sensitivity
PCS 1900
-109
dBm
Downlink RF level @ BER Class II < 2.4 %
Condition: 50 source
Table 15: Receiver sensitivity performance
Parameter
Min
Maximum output power
GSM 850 / E-GSM 900
Maximum output power
DCS 1800 / PCS 1900
Typical
Max
Unit
Remarks
32.2
dBm
Uplink burst RF power for GSM or GPRS 1-slot TCH
at maximum output power control level (PCL 5 or Gamma 3)
30.5
dBm
Uplink burst RF power for GPRS 2-slot TCH
at maximum output power control level (Gamma 3)
29.2
dBm
Uplink burst RF power for GSM or GPRS 1-slot TCH
at maximum output power control level (PCL 0 or Gamma 3)
27.5
dBm
Uplink burst RF power for GPRS 2-slot TCH
at maximum output power control level (Gamma 3)
Condition: 50 output load
Table 16: Transmitter maximum output power
4.2.6 ANT_DET pin
Pin Name
Parameter
ANT_DET
Output DC current pulse
value
Output DC current pulse
time length
Min
Typical
Max
20
3.7
5.4
Unit
Remarks
µA
8.1
ms
Table 17: ANT_DET pin characteristics
UBX-13000993 - R19
Electrical specifications
Page 26 of 47
SARA-G3 series - Data Sheet
4.2.7 PWR_ON pin
Pin Name
Parameter
Min
Typical
Max
Unit
Remarks
PWR_ON
Internal supply for
Power-On Input Signal
2.19
2.30
2.42
V
Real Time Clock supply (V_BCKP)
L-level input
-0.10
0.65
V
High input impedance (no internal pull-up)
H-level input
2.00
4.50
V
High input impedance (no internal pull-up)
L-level input current
PWR_ON low time
to switch-on the module
-8
µA
5
ms
Table 18: PWR_ON pin characteristics
4.2.8 RESET_N pin
Pin Name
Parameter
Min
Typical
Max
Unit
Remarks
RESET_N
Internal supply for
External Reset Signal
1.75
1.80
1.85
V
Digital I/O Interfaces supply (V_INT)
L-level input
-0.10
0.15
V
A series Schottky diode is integrated in the
module as protection:
the module senses a low level when the
RESET_N pin is forced low.
H-level input
1.40
4.50
V
A series Schottky diode is integrated in the
module as protection:
the module senses a low level when the
RESET_N pin is forced low.
10
k
Internal pull-up to V_INT after the internal
series Schottky diode
-180
µA
Pull-up resistance
L-level input current
RESET_N low time
to perform a proper reset
50
ms
SARA-G340, SARA-G350
RESET_N low time
to perform a proper reset
3000
ms
SARA-G300, SARA-G310
Table 19: RESET_N pin characteristics
4.2.9 EXT32K pin
Pin Name
Parameter
Min
EXT32K
L-level input
H-level input
Input clock frequency
32.765
Typical
Max
Unit
-0.25
0.20
V
V_BCKP
– 0.20
V_BCKP
+ 0.25
V
V_BCKP = 2.3 V (typical) generated by the
internal LDO linear regulator when valid
VCC supply is present.
32.771
kHz
Frequency tolerance: +/- 100 ppm
32.768
Remarks
Table 20: EXT32K pin characteristics
UBX-13000993 - R19
Electrical specifications
Page 27 of 47
SARA-G3 series - Data Sheet
4.2.10 SIM pins
Parameter
Min
Typical
Max
Unit
Remarks
0.37
V
VSIM = 1.80 V
0.60
V
VSIM = 2.85 V
1.22
3.30
V
VSIM = 1.80 V
1.95
3.30
V
VSIM = 2.85 V
0.00
0.35
V
VSIM = 1.80 V, Max value at IOL = +1.0 mA
0.00
0.35
V
VSIM = 2.85 V, Max value at IOL = +1.0 mA
Low-level input
High-level input
Low-level output
High-level output
1.45
1.80
V
VSIM = 1.80 V, Min value at IOH = -1.0 mA
2.50
2.85
V
VSIM = 2.85 V, Min value at IOH = -1.0 mA
µA
0.2 V < VIN < 3.3 V
Input/Output leakage current
0.7
Internal pull-up resistor on SIM_IO
to VSIM
4.7
k
Clock frequency on SIM_CLK
3.25
MHz
Table 21: SIM pins characteristics
4.2.11 Generic Digital Interfaces pins
Parameter
Min
Typical
Max
Unit
Remarks
Internal supply for GDI domain
1.75
1.80
1.85
V
Digital I/O Interfaces supply (V_INT)
Input characteristic:
L-level input
-0.20
0.35
V
Input characteristic:
H-level input
1.30
1.95
V
0.00
0.20
V
Max value at IOL = +3.0 mA for Driver Class A
0.00
0.35
V
Max value at IOL = +6.0 mA for Driver Class A
0.00
0.20
V
Max value at IOL = +2.5 mA for Driver Class B
0.00
0.35
V
Max value at IOL = +5.0 mA for Driver Class B
Output characteristics:
L-level output
Output characteristics:
H-level output
1.60
1.80
V
Min value at IOH = -3.0 mA for Driver Class A
1.45
1.80
V
Min value at IOH = -6.0 mA for Driver Class A
1.60
1.80
V
Min value at IOH = -2.5 mA for Driver Class B
1.45
1.80
V
Min value at IOH = -5.0 mA for Driver Class B
µA
0.2 V < VIN < 1.95 V
-102
µA
PU Class a
-55
µA
PU Class b
-31
µA
PU Class c
103
µA
PD Class a
51
µA
PD Class b
27
µA
PD Class c
Input/Output leakage current
Pull-up input current
Pull-down input current
0.7
Table 22: GDI pins characteristics
UBX-13000993 - R19
Electrical specifications
Page 28 of 47
SARA-G3 series - Data Sheet
4.2.11.1 AC characteristics of digital audio interfaces pins
The 4-wire I2S digital audio interfaces can be configured in 2 different modes:
Normal I2S mode with Master role
PCM mode with Master role
Normal I2S mode with Master role
T1
T2
T3
I2S_CLK
T4
T5
I2S_TX / I2S_WA
T6
T7
I2S_RX
Figure 4: AC characteristics of digital audio interface in normal I2S mode ( = 2, 4, 6, 8, 10, 12)
T1
T2
T3
I2S_CLK
T4
T5
I2S_TX / I2S_WA
T6
T7
I2S_RX
Figure 5: AC characteristics of digital audio interface in normal I2S mode ( = 3, 5, 7, 9, 11, 13)
Parameter
Description
Min
Typical
T1
I2S_CLK period
3.902
1/T1
I2S_CLK frequency
T2
I2S_CLK high time
T3
I2S_CLK low time
T4
T5
T6
T7
Max
Unit
Remarks
3.906
µs
= 2,..,13
256
kHz
= 2,..,13
1.933
1.953
µs
= 2,..,13
1.933
1.953
µs
= 2,..,13
I2S_WA period
125.0
µs
= 2,..,13
I2S_WA frequency
8
kHz
= 2,..,13
I2S_TX invalid before I2S_CLK low end
24
ns
= 2,4,6,8,10,12
I2S_TX invalid before I2S_CLK high end
24
ns
= 3,5,7,9,11,13
I2S_TX valid after I2S_CLK high begin
31
ns
= 2,4,6,8,10,12
I2S_TX valid after I2S_CLK low begin
31
ns
= 3,5,7,9,11,13
I2S_RX setup time before I2S_CLK high end
60
ns
= 2,4,6,8,10,12
I2S_RX setup time before I2S_CLK low end
60
ns
= 3,5,7,9,11,13
I2S_RX hold time after I2S_CLK low begin
12
ns
= 2,4,6,8,10,12
I2S_RX hold time after I2S_CLK high begin
12
ns
= 3,5,7,9,11,13
Table 23: AC characteristics of digital audio interface in normal I2S mode ( = 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
UBX-13000993 - R19
Electrical specifications
Page 29 of 47
SARA-G3 series - Data Sheet
PCM mode with Master role
I2S_WA
T4
T1
T5
I2S_CLK
T2
I2S_TX
T3
T6
LSB
T7
M SB
T8
I2S_RX
LSB
T9
M SB
Figure 6: AC characteristics of digital audio interface in PCM mode ( = 0)
I2S_WA
T4
T5
T1
I2S_CLK
T6
I2S_TX
LSB
T7
T2
M SB
T8
I2S_RX
LSB
T3
T9
M SB
Figure 7: AC characteristics of digital audio interface in PCM mode ( = 1)
Parameter
Description
Min
Typical
T1
I2S_CLK period
6.940
7.349
1/T1
T2
T3
Unit
Remarks
6.944
µs
= 0
7.353
µs
= 1
144
kHz
= 0
136
kHz
= 1
3.452
3.472
µs
= 0
3.656
3.676
µs
= 1
3.452
3.472
µs
= 0
3.656
3.676
µs
= 1
I2S_WA period
125.0
µs
= 0,1
I2S_WA frequency
8
kHz
= 0,1
I2S_CLK frequency
I2S_CLK low time
I2S_CLK high time
Max
T4
I2S_CLK high begin to I2S_WA high begin
-24
31
ns
= 0,1
T5
I2S_CLK low end to I2S_WA high end
-24
31
ns
= 0,1
T6
I2S_TX invalid before I2S_CLK low end
24
ns
= 0,1
T7
I2S_TX valid after I2S_CLK high begin
22
ns
= 0,1
T8
I2S_RX setup time before I2S_CLK high end
60
ns
= 0,1
T9
I2S_RX hold time after I2S_CLK low begin
12
ns
= 0,1
Table 24: AC characteristics of digital audio interface in PCM mode ( = 0, 1)
UBX-13000993 - R19
Electrical specifications
Page 30 of 47
SARA-G3 series - Data Sheet
4.2.12 DDC (I2C) pins
Parameter
Min
Typical
Max
Unit
Remarks
Internal supply for DDC domain
1.75
1.80
1.85
V
Digital I/O Interfaces supply (V_INT)
L-level input
-0.20
0.35
V
In accordance with I C bus specification
H-level input
1.30
3.30
V
In accordance with I C bus specification
0.40
V
Max value at IOL = +3.0 mA
0.7
µA
0.2 V < VIN < 3.3 V
L-level output
0.00
Input/Output leakage current
Clock frequency on SCL
100
2
2
kHz
Table 25: DDC pins characteristics
4.2.13 Audio pins
Pin Name
Parameter
MIC_BIAS
Microphone supply output
voltage
Typical
Max
2.2
Unit
Remarks
V
Provided by MIC_BIAS output pin with
MIC_GND pin as reference.
Microphone supply output
current
4.0
mA
Provided by MIC_BIAS output pin with
MIC_GND pin as reference
Load capacitance
0
nF
Proper internal bypass capacitor is already
provided to guarantee stable operation: an
external capacitor cannot be directly
connected to MIC_BIAS pin, but can be
provided after a proper series resistor.
Load resistance
MIC_GND
Min
1
Microphone ground
k
0
V
MIC_GND pin is internally connected to GND
as a sense line
Max
Unit
Remarks
0.8
Vpp
Full scale differential voltage
Table 26: Microphone supply (MIC_BIAS) characteristics
Pin Name
Parameter
MIC_P/MIC_N
Differential input voltage
Min
Typical
Differential input resistance
50
Common mode DC voltage
0.5
Input capacitance
5
Signal to noise
75
Signal to distortion (THD)
65
Power supply rejection
49
k
10
V
No internal DC blocking capacitor
pF
No internal DC blocking capacitor
dB
Gain stage = +12 dB,
Bandwidth 300-3900 Hz
dB
85
dB
Table 27: Differential audio transmit path (MIC_P, MIC_N) input characteristics
Pin Name
Parameter
Min
Typical
Max
Unit
Remarks
SPK_P/SPK_N
Maximum differential
output voltage
4.0
4.1
4.2
Vpp
Full scale differential open circuit voltage
1.25
Common mode output
voltage
Output current limit
Output load resistance
V
200
mA
250
pF
14
Single-ended output load
capacitance
Signal to noise
70
80
dB
Load = 16 , Gain stage = +0 dB,
Input signal = 0 dBFS, Code 0, A-weighted
Signal to distortion (THD)
60
70
dB
Load = 16 , Input signal = 0 dBFS
Table 28: Differential audio receive path (SPK_P, SPK_N) output characteristics
UBX-13000993 - R19
Electrical specifications
Page 31 of 47
SARA-G3 series - Data Sheet
5 Mechanical specifications
Pin 1
Indicator
K
M1
M2
K
F
Q
E
M1
P
R
L
R
G
H1
J1
B
J2
N
H2
ANT pin
J2
O
H2
O
E
L
I
F
D
G
H1
J1
D
A
C
Figure 8: SARA-G3 series dimensions (bottom and sides views)
Parameter
Description
A
B
C
D
E
F
G
H1
H2
I
J1
J2
K
L
M1
M2
N
O
P
Q
R
Weight
Module Height [mm]
Module Width [mm]
26
Module Thickness [mm]
Horizontal Edge to Lateral Pin Pitch [mm]
Vertical Edge to Lateral Pin Pitch [mm]
Edge to Lateral Pin Pitch [mm]
Lateral Pin to Pin Pitch [mm]
Lateral Pin Height [mm]
Lateral Pin close to ANT Height [mm]
Lateral Pin Width [mm]
Lateral Pin to Pin Distance [mm]
Lateral Pin to Pin close to ANT Distance [mm]
Horizontal Edge to Central Pin Pitch [mm]
Vertical Edge to Central Pin Pitch [mm]
Central Pin to Pin Horizontal Pitch [mm]
Central Pin to Pin Horizontal Pitch [mm]
Central Pin to Pin Vertical Pitch [mm]
Central Pin Height and Width [mm]
Horizontal Edge to Pin 1 Indicator Pitch [mm]
Vertical Edge to Pin 1 Indicator Pitch [mm]
Pin 1 Indicator Height and Width [mm]
Module Weight [g]
Typical
26.0
16.0
2.4
2.0
2.5
1.05
1.1
0.8
0.9
1.5
0.3
0.2
2.75
2.75
1.8
3.6
2.1
1.1
0.9
1.0
0.6
工商网监
湘ICP备2023018690号
