SARA-U2_V01_技术文档

SARA-U2 series

HSPA modules with 2G fallback

Data Sheet

Abstract

Technical data sheet describing the SARA-U2 series HSPA cellular modules. These modules are a

complete and cost-efficient 3.75G solution offering up to five-band high-speed HSPA and up to

quad-band GSM/EGPRS voice and/or data transmission technology in a compact form factor.

www.u-blox.com

UBX-13005287 - R20

SARA-U2 series - Data Sheet

Document Information

Title

SARA-U2 series

HSPA modules with 2G fallback

Data Sheet

Subtitle

Document type

Document number

Revision and date

Disclosure Restriction

UBX-13005287

R20

15-Apr-2019

Product status

Functional Sample

Corresponding content status

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.

Data from product verification. Revised and supplementary data may be published later.

Document contains the final product specification.

Initial Production

Early Production Information

Production Information

Mass Production /

End of Life

This document applies to the following products:

Product status

Product name

Type number

Modem version Application version PCN reference

SARA-U201

SARA-U201-03B-00

SARA-U201-63B-00

SARA-U201-63B-01

SARA-U201-63B-02

SARA-U201-04B-00

23.60

23.62

23.63

23.60

23.20

23.41

23.20

23.41

23.20

23.28

23.41

A01.01

A01.02

A01.03

A01.06

A01.01

A01.06

A01.01

A01.02

A01.01

A01.02

A01.01

A01.02

A01.01

A01.02

A01.03

A01.02

A01.03

A01.04

A01.05

A01.00

A01.02

A01.00

A01.01

A01.02

UBX-16018086

UBX-17053345

UBX-18005738

UBX-18071209

UBX-17058162

UBX-16030157

UBX-17058162

UBX-15013844

UBX-17061316

UBX-15020745

UBX-17061316

UBX-16006754

UBX-17061316

UBX-15020745

UBX-17061316

UBX-19000858

UBX-16028821

UBX-17061316

UBX-16008757

UBX-17011151

UBX-17061316

UBX-14015739

UBX-17061316

UBX-15011634

UBX-17061316

UBX-15020745

UBX-17061316

Mass Production

Obsolete

End of Life

Mass Production

Obsolete

Mass Production

Obsolete

Mass Production

Obsolete

Mass Production

Obsolete

Mass Production

Prototype

Obsolete

Mass Production

Obsolete

End of Life

Mass Production

Obsolete

Mass Production

End of Life

Mass Production

Obsolete

SARA-U201 ATEX SARA-U201-03X-00

SARA-U201-04X-00

SARA-U260

SARA-U260-00S-01

SARA-U260-00S-02

SARA-U260-03S-00

SARA-U260-03S-01

SARA-U270-00S-01

SARA-U270-00S-02

SARA-U270-03S-00

SARA-U270-03S-01

SARA-U270-04B-00

SARA-U270-73S-00

SARA-U270-73S-01

SARA-U270-53S-00

SARA-U270-53S-01

SARA-U270-53S-02

SARA-U270

SARA-U270 ATEX SARA-U270-00X-00

SARA-U270-00X-01

SARA-U280

SARA-U280-00S-00

SARA-U280-00S-01

SARA-U280-03S-00

SARA-U280-03S-01

Mass Production

u-blox or third parties may hold intellectual property rights in the products, names, logos and designs included in this document.

Copying, reproduction, modification or disclosure to third parties of this document or any part thereof is only permitted with the

express written permission of u-blox.

The information contained herein is provided “as is” and u-blox assumes no liability for its use. No warranty, either express or

implied, is given, including but not limited to, 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 without notice. For the most recent documents,

visit www.u-blox.com.

UBX-13005287 - R20

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SARA-U2 series - Data Sheet

Contents

Document Information................................................................................................................................2

Contents ..........................................................................................................................................................3

1

Functional description .........................................................................................................................5

1.1 Overview........................................................................................................................................................5

1.2 Product features .........................................................................................................................................5

1.3 Block diagram .............................................................................................................................................. 6

1.4 Product description .................................................................................................................................... 7

1.5 AT command support ................................................................................................................................8

1.6 Supported features .................................................................................................................................... 9

Interfaces ............................................................................................................................................... 12

2.1 Power management ..................................................................................................................................12

2

2.1.1

Module supply (VCC).........................................................................................................................12

2.1.2 RTC supply (V_BCKP)........................................................................................................................12

2.1.3 Generic digital interfaces supply (V_INT) .....................................................................................12

2.2 Antenna........................................................................................................................................................12

2.2.1 Antenna RF interface (ANT)............................................................................................................12

2.2.2 Antenna detection (ANT_DET) .......................................................................................................12

2.3 System functions.......................................................................................................................................12

2.3.1 Module power-on ...............................................................................................................................12

2.3.2 Module power-off.............................................................................................................................. 13

2.3.3 Module reset ...................................................................................................................................... 13

2.4 SIM ............................................................................................................................................................... 13

2.4.1 (U)SIM interface................................................................................................................................ 13

2.4.2 SIM card detection (SIM_DET)....................................................................................................... 13

2.5 Serial interfaces ........................................................................................................................................ 14

2.5.1 Asynchronous serial interface (UART)......................................................................................... 15

2.5.2 Auxiliary asynchronous serial interface (AUX UART)................................................................ 16

2.5.3 Universal Serial Bus (USB) ...............................................................................................................17

2.5.4 DDC (I²C) bus interface.................................................................................................................... 18

2.6 Audio............................................................................................................................................................ 18

2.7 GPIO ............................................................................................................................................................. 19

Pin definition ........................................................................................................................................ 20

3.1 Pin assignment..........................................................................................................................................20

Electrical specifications ....................................................................................................................25

4.1 Absolute maximum rating.......................................................................................................................25

3

4

4.1.1

Maximum ESD...................................................................................................................................25

4.2 Operating conditions................................................................................................................................26

4.2.1 Operating temperature range........................................................................................................26

4.2.2 Supply/Power pins ............................................................................................................................27

4.2.3 Current consumption.......................................................................................................................28

4.2.4 RF characteristics ............................................................................................................................30

4.2.5 ANT_DET pin...................................................................................................................................... 31

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SARA-U2 series - Data Sheet

4.2.6 PWR_ON pin....................................................................................................................................... 31

4.2.7 RESET_N pin...................................................................................................................................... 31

4.2.8 (U)SIM pins.........................................................................................................................................32

4.2.9 Generic Digital Interfaces pins.......................................................................................................33

4.2.10 USB pins .............................................................................................................................................43

4.2.11 DDC (I²C) pins.....................................................................................................................................44

Mechanical specifications ............................................................................................................... 45

Reliability tests and approvals....................................................................................................... 46

6.1 Reliability tests..........................................................................................................................................46

6.2 Approvals....................................................................................................................................................46

6.2.1 SARA-U2 series.................................................................................................................................46

6.2.2 SARA-U201 ATEX and SARA-U270 ATEX....................................................................................47

Product handling & soldering.......................................................................................................... 49

7.1 Packaging ...................................................................................................................................................49

5

6

7

7.1.1

Reels ....................................................................................................................................................49

7.1.2 Tapes...................................................................................................................................................50

7.2 Moisture Sensitivity Levels..................................................................................................................... 51

7.3 Reflow soldering ........................................................................................................................................ 51

7.4 ESD precautions........................................................................................................................................ 51

Default settings ...................................................................................................................................52

Labeling and ordering information ............................................................................................... 53

9.1 Product labeling.........................................................................................................................................53

9.2 Explanation of codes ................................................................................................................................54

9.3 Ordering information................................................................................................................................55

8

9

Appendix ....................................................................................................................................................... 56

Glossary ................................................................................................................................................. 56

A

Related documents ................................................................................................................................... 59

Revision history .......................................................................................................................................... 60

Contact........................................................................................................................................................... 61

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SARA-U2 series - Data Sheet

1 Functional description

1.1 Overview

The SARA-U2 series modules are a 3.75G UMTS/HSPA solution with GSM/(E)GPRS fall-back in the

miniature (26.0 x 16.0 mm, 96-pin) SARA LGA form factor that allows seamless drop-in migration from

/ to other u-blox cellular modules families. SARA-U2 modules feature HSPA data-rates of 7.2 Mbit/s

(downlink) and 5.76 Mbit/s (uplink). The modules offer data and voice communication over an

extended operating temperature range of -40 °C to +85 °C, with low power consumption and a rich

feature set including dual-stack IPv4 / IPv6.

The SARA-U2 series includes variants supporting band combinations for worldwide operation, for

operation in North America, Europe, Asia and other countries. A cost-saving UMTS-only variant is also

available.

SARA-U2 modules are complete, fully qualified and certified solutions, which reduce costs and enable

short time to market. They are ideally suited to M2M applications such as: mobile internet terminals,

car infotainment and telematics, Automatic Meter Reading (AMR), Remote Monitoring Automation

and Control (RMAC), surveillance and security, road pricing, asset tracking, fleet management, anti-

theft systems, and Point of Sales (PoS) terminals. SARA-U2 modules support full access to u-blox

GNSS receivers via serial port. Thus any host processor connected to the cellular module through a

single serial port can control both the cellular module and the positioning chip/module. The compact

SARA 26.0 x 16.0 mm form factor with LGA pads (functionally referred to as “pins”) allows fully

automated assembly with standard pick & place and reflow soldering equipment for cost-efficient,

high-volume production.

1.2 Product features

Model

UMTS

Bands

Interfaces Audio

Features

Grade

800/850/900 850/900

1900/2100 1800/1900

1

5.76 7.2

2¹

1

9

1

●

SARA-U201

800/850/900 850/900

1900/2100 1800/1900

SARA-U201

ATEX

2¹

1

●

5.76 7.2

850/1900

1

9

1

●

SARA-U260

SARA-U270

900/2100 900/1800²2³

●

SARA-U270

ATEX

5.76 7.2

900/2100

850/1900

900/1800

1

9

1

●

SARA-U280

Table 1: SARA-U2 series main features summary⁴

¹Second UART interface and FOTA not supported by "03" and "63" product versions

²2G radio access technology not supported by SARA-U270-73S and SARA-U270-53S module product versions

³Second UART interface not supported by "00", "03", "53" and "73" product versions

⁴The SARA-U201 ATEX and SARA-U270 ATEX modules, unless otherwise specified, provide the same feature set as the

SARA-U201 and SARA-U270 modules respectively, with the additional certification for use in potentially explosive

atmospheres. Unless otherwise specified, SARA-U201 refers to all SARA-U201 ATEX and SARA-U201 modules, and in the

same way SARA-U270 refers to both SARA-U270 ATEX and SARA-U270 modules.

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Functional description

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SARA-U2 series - Data Sheet

1.3 Block diagram

26 MHz

32 kHz

2G PA

Power-On

ANT

Reset

3G PA

Switch

RF

Duplexers

SIM

transceiver

SIM card detection

UART

LNAs

Filters

Cellular

BaseBand

Processor

USB

DDC (I²C) / AUX UART

Memory

Digital audio (I²S)

GPIO

VCC (Supply)

V_BCKP (RTC)

V_INT (I/O)

Power

Management

Antenna detection

Figure 1: SARA-U201 block diagram

26 MHz

32 kHz

2G PA

Power-On

Reset

ANT

LNA

Switch

RF

Duplexer

Filter

SIM

transceiver

SIM card detection

UART

3G PA

Cellular

BaseBand

Processor

USB

DDC (I²C)

Memory

Digital audio (I²S)

GPIO

VCC (Supply)

V_BCKP (RTC)

V_INT (I/O)

Power

Management

Antenna detection

Figure 2: SARA-U260 and SARA-U270 block diagram

26 MHz

32 kHz

Power-On

Reset

LNA

Duplexer

ANT

Switch

RF

3G PA

SIM

transceiver

Filter

SIM card detection

UART

Cellular

BaseBand

Processor

USB

DDC (I²C)

Memory

Digital audio (I²S)

GPIO

VCC (Supply)

V_BCKP (RTC)

V_INT (I/O)

Power

Management

Antenna detection

Figure 3: SARA-U280 block diagram

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SARA-U2 series - Data Sheet

1.4 Product description

SARA-U2 series modules provide variants to support different band combinations for specific regions:



SARA-U201 modules are designed for worldwide operation

SARA-U260 and SARA-U280 modules are mainly designed for operation in America

SARA-U270 modules are mainly designed for operation in Europe, Asia and other countries

3G UMTS/HSDPA/HSUPA characteristics

2G GSM/GPRS/EDGE characteristics⁵

Class A User Equipment ⁶

Class B Mobile Station ⁷

3GPP Release 7

High Speed Packet Access (HSPA)

UMTS Terrestrial Radio Access (UTRA)

Frequency Division Duplex (FDD)

Enhanced Data rate GSM Evolution (EDGE)

GSM EGPRS Radio Access (GERA)

Time Division Multiple Access (TDMA)

Band support:



SARA-U201:



SARA-U201:

Band 19 (800 MHz)

Band 5 (850 MHz)

Band 8 (900 MHz)

Band 2 (1900 MHz)

Band 1 (2100 MHz)

GSM 850 MHz

E-GSM 900 MHz

DCS 1800 MHz

PCS 1900 MHz



SARA-U260 and SARA-U280:

Band 5 (850 MHz)

Band 2 (1900 MHz)



SARA-U260:

GSM 850 MHz

PCS 1900 MHz

SARA-U270:

Band 8 (900 MHz)

Band 1 (2100 MHz)

E-GSM 900 MHz

DCS 1800 MHz

WCDMA/HSDPA/HSUPA Power Class

Power Class 3 (24 dBm) for WCDMA/HSDPA/HSUPA mode

GSM/GPRS Power Class



Power Class 4 (33 dBm) for GSM/E-GSM bands

Power Class 1 (30 dBm) for DCS/PCS bands



EDGE Power Class⁸



Power Class E2 (27 dBm) for GSM/E-GSM bands

Power Class E2 (26 dBm) for DCS/PCS bands

PS (Packet Switched) data rate

PS (Packet Switched) data rate⁹



HSUPA category 6, up to 5.76 Mbit/s UL

HSDPA category 8, up to 7.2 Mbit/s DL

WCDMA PS data, up to 384 kbit/s DL/UL



GPRS multi-slot class 12¹⁰, CS1-CS4 up to 85.6 kbit/s DL/UL

EDGE multi-slot class 12¹¹, MCS1-MCS9¹²up to 236.8 kbit/s

DL/UL

CS (Circuit Switched) data rate

WCDMA CS data, up to 64 kbit/s DL/UL

CS (Circuit Switched) data rate



GSM CS data, up to 9.6 kbit/s DL/UL

supported in transparent/non transparent mode

Table 2: SARA-U2 series 3G and 2G characteristics

⁵2G radio access technology not supported by SARA-U270-73S, SARA-U270-53S and SARA-U280 modules

⁶Device can work simultaneously in Packet Switch and Circuit Switch mode: voice calls are possible while the data connection

is active without any interruption in service.

⁷Device can be attached to both GPRS and GSM services (i.e. Packet Switch and Circuit Switch mode) using one service at a

time. If for example during data transmission an incoming call occurs, the data connection is suspended to allow the voice

communication. Once the voice call has terminated, the data service is resumed.

⁸SARA-U260 and SARA-U270 modules do not support 8-PSK modulation in uplink; the EDGE Power Class corresponds to the

GSM/GPRS Power Class

⁹GPRS / EDGE multi-slot class determines the number of timeslots available for upload and download and thus the speed at

which data can be transmitted and received, with higher classes typically allowing faster data transfer rates.

¹⁰GPRS multi-slot class 12 implies a maximum of 4 slots in DL (reception) and 4 slots in UL (transmission) with 5 slots in total.

¹¹EDGE multi-slot class 12 implies a maximum of 4 slots in DL (reception) and 4 slots in UL (transmission) with 5 slots in total.

¹²SARA-U260, SARA-U270 modules support EDGE multi-slot class 12, MCS1-MCS9 up to 236.8 kbit/s DL, MCS1-MCS4 up to

70.4 kbit/s UL

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Functional description

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SARA-U2 series - Data Sheet

Operation modes I to III are supported on GSM/GPRS networks, with user-defined preferred service

selectable from GSM to GPRS. Paging messages for GSM calls can be optionally monitored during

GPRS data transfer in not-coordinating NOM II-III. Direct Link mode is supported for TCP and UDP

sockets.

Basic features

Supplementary services

Call Hold/Resume (HOLD)

Call Waiting (CW)

Short Message Service (SMS)

Text and PDU mode supported

Mobile-Originating SMS (MO SMS)

Mobile-Terminating SMS (MT SMS)

SMS indication and acknowledgement

SMS Cell Broadcast (CBS)

Display of Called Number

Indication of Call Progress Signals

Country/PLMN Indication

Country/PLMN Selection

International Access Function

Service Indicator

Multi-Party (MTPY)

Call Forwarding (CFU, CFB, CFNRy, CFNRc)

Call Deflection (CD)

Explicit Call Transfer (ECT)

SMS during circuit-switched calls

SMS over CSD

Emergency Calls Capabilities

Call Barring (BAOC, BOIC, BOIC-exHC, BAIC,

BIC_Roam)

Dual Tone Multi Frequency (DTMF)

Subscription Identity Management

Service Provider Indication

Abbreviated Dialing

Advice of Charge Charging (AoCC, AoCI)

SMS over PSD

Calling Line Identification Presentation (CLIP) SMS storage on SIM

Calling Line Identification Restriction (CLIR) SMS storage on module memory

Connected Line Identification Presentation

(CoLP)

Concatenated SMS

Fixed Number Dialing

Connected Line Identification Restriction

(CoLR)

Barring of Dialed Numbers

Unstructured Supplementary Services Data

(USSD)

SIM Application Toolkit

ME-SIM lock

Network Identify and Time Zone (NITZ)

Calling Name Presentation (CNAP)

SIM Access Profile

Table 3: SARA-U2 series mobile stations: basic features, supplementary services and SMS service summary¹³

1.5 AT command support

SARA-U2 series modules support AT commands according to the 3GPP Technical Specifications

27.007 [1], 27.005 [2], 27.010 [3], and the u-blox AT command extension.

☞

For the complete list of supported AT commands and their syntax, see the u-blox AT Commands

Manual [4].

RIL (Radio Interface Layer) software for Android and Embedded Windows is available for SARA-U2

series modules free of charge; see the Android RIL Production delivery [5] application note for more

information.

¹³All these functionalities are supported via AT commands (for more details, see u-blox AT Commands Manual [4]).

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SARA-U2 series - Data Sheet

1.6 Supported features

Table 4 lists the main features supported by SARA-U2 modules. For more details, see the SARA-G3

and SARA-U2 series System Integration Manual [6] and the u-blox AT commands manual [4].

Feature

Description

Network indication

GPIO configured to indicate the network status: registered home network, registered roaming, voice

or data call enabled, no service.

The feature can be enabled through the +UGPIOC AT command.

Antenna detection

Jamming detection

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 the +UANTR AT command.

Detects some “artificial” interference that obscures the operator’s carriers entitled to give access

to the GSM/UMTS service and reports the start and stop of such conditions to the application

processor (AP). The AP can react appropriately by e.g. switching off the radio transceiver to reduce

power consumption and monitoring the environment at constant periods.

The feature can be enabled and configured through the +UCD AT command.

Embedded TCP and UDP Embedded TCP/IP and UDP/IP stack including direct link mode for TCP and UDP sockets.

stack

Sockets can be set in Direct Link mode to establish a transparent end to end communication with

an already connected TCP or UDP socket via serial interface.

FTP, FTPS

HTTP, HTTPS

File Transfer Protocol as well as Secure File Transfer Protocol (SSL encryption of FTP control

channel) functionalities are supported via AT commands.

Hyper-Text Transfer Protocol as well as Secure Hyper-Text Transfer Protocol (SSL encryption)

functionalities is supported via AT commands. HEAD, GET, POST, DELETE and PUT operations are

available. Up to four client contexts can be simultaneously used.

Embedded TLS 1.2 ¹⁵

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.

IPv4/IPv6 dual-stack

GNSS via modem

Capability to move between IPv4 and dual stack network infrastructures using external context.

IPv4 and IPv6 addresses can be used.

Full access to u-blox positioning chips and modules is available through a dedicated DDC (I²C)

interface. This means that from any host processor, a single serial port can control the cellular

module and the positioning chip or module. For more details, see the GNSS Implementation

Application Note [7].

Embedded AssistNow

Software

Embedded AssistNow Online and AssistNow Offline clients to provide better GNSS performance

and faster Time-to-First-Fix. An AT command can enable / disable the clients.

CellLocate^®

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: only the parameters of the visible home network cells are sent

Deep scan: the parameters of all surrounding cells of all mobile operators are sent



CellLocate^®is implemented using a set of AT commands that allow configuration and position

request.

Hybrid Positioning

The module current position is provided using a u-blox positioning chip or module or the estimated

position from CellLocate^®depending by 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 configuration and

position request.

Control Plan Aiding /

LCS ¹⁵

Assisted GPS Location Services feature, which is based on the Radio Resources Location Protocol

(RRLP), according to 3GPP TS 44.031 [9], and Radio Resource Control (RRC), according to 3GPP TS

25.331 [17]. With the Assisted GPS feature, a location server provides the module with the GPS

system information that otherwise must be downloaded from satellites. The feature allows faster

position fixes, increases sensitivity and reduces module power consumption. The feature is invoked

by the module through LCS Supplementary Services or by the Network during emergency calls.

Firmware update Over

AT commands (FOAT)

Firmware module upgrade over UART and USB interface using AT command.

The firmware upgrade can be executed through the +UFWUPD AT command.

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SARA-U2 series - Data Sheet

Feature

Description

Smart Temperature

Supervisor

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 feature can be enabled or disabled through the +USTS AT command.

☞

The sensor measures the board temperature, which can differ from the ambient temperature.

SIM Access Profile (SAP) Allows access and use of a remote (U)SIM card instead of the local SIM card directly connected to

the module (U)SIM interface. The module acts as an SAP Client establishing a connection and

performing data exchange to a SAP Server directly connected to the remote SIM. The modules

provide a dedicated USB SAP channel and a dedicated multiplexer SAP channel over UART for

communication with the remote (U)SIM card.

The feature can be configured and enabled by +USAPMODE and + USAPIND AT commands.

BIP ¹⁵

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 ¹⁴

In-Band modem solution for eCall and ERA-GLONASS emergency call applications over cellular

networks implemented according to the 3GPP TS 26.267 specification [8].

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

Power saving

During a voice call, the Dual-Tone Multi-Frequency detector analyses the RX speech (coming from

the remote party). The detected DTMF symbols can be output via the related URC.

For more details, see the +UDTMFD AT command.

The power saving configuration is disabled by default, 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. The feature can be enabled through the +UPSV AT

command.

Automatic selection of

authentication type ¹⁵

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 for The quality of the GPRS UL and/or DL connection is returned by the AT+CSQ command.

Packet Switched calls ¹⁵

eMLPP ¹⁵

Multi-Level Precedence and Pre-emption Service (eMLPP) permits to handle the call priority. The

maximum priority associated to a user is set in the SIM: within this threshold, the user can assign

different priorities to the calls. This results in a differentiated treatment of the calls by the network

in case of abnormal events such as handovers to congested cells.

The feature can be enabled through the +CAEMLPP, +CPPS, +CAAP AT commands.

Network Friendly Mode ¹⁵When 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 [18].

The feature can be enabled through the +UNFM, +UNFMCONF and +URPM AT commands.

Ethernet (CDC-ECM)

over USB interface ¹⁵

Ethernet (CDC-ECM) interface allowing networking from a HOST by means of the IP address

received from the cellular network (bridge mode).

The HOST configuration is performed via the DHCP protocol (a DHCP server is implemented).

It operates as a not exclusive alternative to PPP dial-up.

The feature can be configured by +UUSBCONF and enabled by +UCEDATA AT commands.

ODIS¹⁶

OMA-DM IMEI Sync (ODIS) is an AT&T functionality required at the cellular module level and used to

identify the end device operating inside the network.

¹⁴Not supported by SARA-U260 and SARA-U280 modules

¹⁵Not supported by “00” product version

¹⁶Not supported on SARA-U260, SARA-U270 and SARA-U280 modules

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Feature

Description

Last gasp¹⁷

In case of power supply outage (i.e. main supply interruption, battery removal, battery voltage below

a certain threshold) the cellular module can be configured to send an alarm notification to a remote

entity.

The feature can be enabled and configured through the +ULGASP AT command.

Firmware update Over

The Air (FOTA) ¹⁷

Embedded FOTA client to enable the Firmware module update over the cellular air interface.

The feature can be enabled and configured through the +UFWINSTALL AT command.

Smart radio Coverage

Manager (SCM) ¹⁷

Smart radio coverage manager is a feature that aims to reduce the power consumption in those

cellular scenarios where the radio coverage or the network conditions would cause an inefficient

usage of power supply.

The feature can be enabled and configured through the +UDCONF=57 AT command.

Table 4: Main supported features of the SARA-U2 series

☞

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 or the specific device that sent the position.

¹⁷Not supported by "00","03","53","63","73" product versions

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2 Interfaces

2.1 Power management

2.1.1 Module supply (VCC)

SARA-U2 modules must be supplied through the 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 and SARA-U2

series System Integration Manual [6]). It is important that the system power supply circuit is able to

support peak power.

2.1.2 RTC supply (V_BCKP)

V_BCKP is the Real Time Clock (RTC) supply of SARA-U2 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 Generic digital interfaces supply (V_INT)

SARA-U2 modules provide a 1.8 V supply rail output on the V_INT pin, which is internally generated

when the module is switched on. The same voltage domain is used internally to supply the generic

digital interfaces of the modules. The V_INT supply output can be used in place of an external discrete

regulator optimizing the bill of material for various applications, e.g. with u-blox GNSS receivers

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-U2 modules.

2.2.2 Antenna detection (ANT_DET)

The ANT_DET pin is an Analog to Digital Converter (ADC) input used 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 and

SARA-U2 series System Integration Manual [6] and u-blox AT Commands Manual [4], +UANTR).

2.3 System functions

2.3.1 Module power-on

SARA-U2 modules can be switched on in one of the following ways:



Rising edge on VCC pins to a valid voltage for module supply, i.e. applying module supply

Low pulse on PWR_ON pin, i.e. forcing the pin to a low level for a valid time period (see section

4.2.6), when the applied VCC voltage is within the valid operating range: PWR_ON pin requires an

external pull-up resistor to set its value to normally logic high and may not be left floating

Rising edge on RESET_N pin, i.e. releasing the pin from the low level, normally high due to internal

pull-up, when the applied VCC voltage is within the valid operating range



RTC alarm, i.e. pre-programmed scheduled time by AT+CALA command, when the applied VCC

voltage is within the valid operating range

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2.3.2 Module power-off

SARA-U2 modules can be properly switched off, with storage of current parameter settings and

network detach, in one of these ways:



AT+CPWROFF command

Low pulse on the PWR_ON pin for at least 1 second

An abrupt under-voltage shutdown occurs on SARA-U2 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-U2 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 and the SARA-U2 series System Integration Manual [6] and the u-blox AT

commands manual [4], +USTS AT command.

2.3.3 Module reset

SARA-U2 modules can be properly reset (rebooted), with storage of current parameter settings and

network detach, in this way:



By the AT+CFUN command (see the u-blox AT Commands Manual [4]). This causes an “internal”

or “software” reset of the baseband processor, excluding the integrated power management unit

and the RTC internal block: the V_INT generic digital interfaces supply is enabled and each digital

pin is set to its internal reset state (reported in Table 6), the V_BCKP supply and the RTC block are

enabled.

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 4.2.7). This causes a reset

of the entire module, including the integrated power management unit, except for the RTC internal

block: the V_INT generic digital interfaces supply is switched off and all the digital pins are tri-stated,

but the V_BCKP supply and the RTC block are enabled. The current parameter settings are not saved

in the module’s non-volatile memory and a proper network detach is not performed.

2.4 SIM

2.4.1 (U)SIM interface

SARA-U2 modules provide a (U)SIM interface on the VSIM, SIM_IO, SIM_CLK, SIM_RST pins: the

high-speed SIM/ME interface is implemented as well as automatic detection of the required SIM

supporting voltage.

Both 1.8 V and 3 V SIM card/chip types are supported (1.8 V and 3 V ME). Activation and deactivation

with automatic voltage switch from 1.8 V to 3 V is implemented, according to ISO-IEC 7816-3

specifications. The SIM driver supports the PPS (Protocol and Parameter Selection) procedure for

baud-rate selection, according to the values proposed by the SIM card/chip.

2.4.2 SIM card detection (SIM_DET)

The SIM_DET pin of SARA-U2 modules is a 1.8 V digital input which is configured by default as an

external interrupt to detect the SIM card presence (as a feature which can be optionally used) when it

is properly connected to the mechanical switch of the SIM card holder (for more details, see the

SARA-G3 and SARA-U2 series System Integration Manual [6]).

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The SIM_DET pin of SARA-U2 modules can be configured via AT command to provide the “SIM card

hot insertion/removal” function (see the u-blox AT Commands Manual [4], +UDCONF=50).

The SIM_DET pin of SARA-U2 modules can additionally be configured via AT command as GPIO (see

section 2.7 and the u-blox AT Commands Manual [4], +UGPIOC, +UGPIOR, +UGPIOW).

2.5 Serial interfaces

SARA-U2 modules provide the following serial communication interfaces:



Main primary UART interface: 9-wire unbalanced 1.8 V asynchronous serial interface supporting

(see section 2.5.1)

o

AT command mode¹⁸

Data mode and Online command mode¹⁸

Multiplexer functionality, including dedicated GNSS tunneling and SIM Access Profile virtual

channels

o

FW upgrades by means of the FOAT feature

FW upgrades by means of the u-blox EasyFlash tool

Trace log capture (diagnostic purpose)



Auxiliary secondary UART interface¹⁹: 3-wire unbalanced 1.8 V asynchronous serial interface,

available as alternative function, in mutually exclusive way, over the DDC (I²C) interface’ pins,

supporting (see section 2.5.2)

o

AT command mode

Trace log capture (diagnostic purpose)

USB interface: High-Speed USB 2.0 compliant interface supporting (see section 2.5.3)

o

AT command mode

Data mode and Online command mode¹⁸

GNSS tunneling and SIM Access Profile virtual channels

Ethernet-over-USB²⁰virtual channel

FW upgrades by means of the FOAT feature

FW upgrades by means of the u-blox EasyFlash tool

Trace log capture (diagnostic purpose)



DDC interface: I²C-bus compatible 1.8 V interface supporting (see section 2.5.4)

o

Communication with u-blox GNSS positioning chips / modules

Communication with other external I²C devices as an audio codec

¹⁸See the u-blox AT Commands Manual [4] for the definition of the command mode, data mode, and online command mode.

¹⁹SARA-U2 modules product versions "00", "03", "53", "63", "73" do not provide Auxiliary UART interface.

²⁰SARA-U2 modules product versions "00" do not support Ethernet-over-USB.

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2.5.1 Asynchronous serial interface (UART)

The UART interface is a 9-wire 1.8 V unbalanced asynchronous serial interface supporting AT

command mode, Data mode and Online command mode, MUX functionality, including dedicated

GNSS tunneling and SIM Access Profile virtual channels, FW upgrades by means of the FOAT feature,

FW upgrades by means of the u-blox EasyFlash tool, and Trace log capture (diagnostic purpose).

The UART features are:



Complete serial port with RS-232 functionality conforming to ITU-T V.24 Recommendation [10],

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 available²¹on the hardware flow control output (CTS line): the line is driven

to the OFF state when the module is not prepared to accept data by the UART interface

1’200, 2’400, 4’800, 9’600, 19’200, 38’400, 57’600, 115’200, 230’400, 460’800 and 921’600 bit/s

baud rates are supported for the AT interface



Autobauding is enabled by default

Frame format can be:

o

8N2 (8 data bits, no parity, 2 stop bits)

8N1 (8 data bits, no parity, 1 stop bit)

8E1 (8 data bits, even parity, 1 stop bit)

8O1 (8 data bits, odd parity, 1 stop bit)

7E1 (7 data bits, even parity, 1 stop bit)

7O1 (7 data bits, odd parity, 1 stop bit)



Default frame configuration is 8N1

The UART serial interface can be conveniently configured through AT commands. For more details,

see the u-blox AT Commands Manual [4] (+IPR, +ICF, +IFC, &K, \Q, +UPSV AT command) and the

SARA-G3 and the SARA-U2 series System Integration Manual [6].

2.5.1.1 Autobauding feature

Only one shot autobauding is supported: the baud rate detection is performed only once, at module

start-up.

After detection the module works at the fixed baud rate (the detected one) and the baud rate can only

be changed via the appropriate AT command (+IPR, for more details, see the u-blox AT Commands

Manual [4]).



The module detects the followings baud rates (bit/s): 1’200, 2’400, 4’800, 9’600, 19’200, 38’400,

57’600, 115’200, 230’400



The only detectable frame configurations are: 7E1, 7O1, 8N1, 8E1, 8O1

²¹If enabled

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2.5.1.2 Multiplexer protocol

SARA-U2 module has a software layer with MUX functionality, 3GPP TS 27.010 Multiplexer

Protocol [3], available on the UART interface.

☞

The multiplexer protocol is supported only over the UART physical interface.

This is a data link protocol (layer 2 of OSI model) which uses HDLC-like framing and operates between

the cellular module (Data Circuit-terminating Equipment) and the application processor (Data

Terminal Equipment) allowing simultaneous sessions over the UART physical link: the user can

concurrently use the AT command interface on one MUX channel and Data communication on

another MUX channel. Each session consists of a stream of bytes transferring various kinds of data

such as SMS, CBS, PSD, GNSS, AT commands in general.

SARA-U2 modules provide the following virtual channels:



Channel 0: control channel

Channel 1 – 5: AT commands / data connection

Channel 6: GNSS tunneling

Channel 7: SAP (SIM Access Profile)

For more details, see the Mux Implementation Application Note [11].

2.5.2 Auxiliary asynchronous serial interface (AUX UART)

☞

Not supported by "00", "03", "53", "63", "73" product versions.

The auxiliary UART interface is a 3-wire 1.8 V unbalanced asynchronous serial interface supporting AT

command mode and Trace log capture (diagnostic purpose).

The auxiliary UART interface is disabled by default, and it can be enabled by means of the +USIO AT

command (for more details, see the u-blox AT Commands Manual [4]), as alternative function of the

DDC (I²C) interface’ pins, in mutually exclusive way with the DDC (I²C) interface.

The auxiliary UART features 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)

Data lines (SCL pin configured as RXD_AUX output, SDA pin configured as TXD_AUX input)

Software flow control, or none flow control (default value) are supported

1’200, 2’400, 4’800, 9’600, 19’200, 38’400, 57’600, 115’200, 230’400, 460’800 and 921’600 bit/s

baud rates are supported for the AT interface



Autobauding is enabled by default

Frame format can be:

o

8N2 (8 data bits, no parity, 2 stop bits)

8N1 (8 data bits, no parity, 1 stop bit)

8E1 (8 data bits, even parity, 1 stop bit)

8O1 (8 data bits, odd parity, 1 stop bit)

7E1 (7 data bits, even parity, 1 stop bit)

7O1 (7 data bits, odd parity, 1 stop bit)



Default frame configuration is 8N1

The auxiliary UART serial interface can be conveniently configured through AT commands. For more

details, see the u-blox AT Commands Manual [4] (+IPR, +ICF, +IFC, &K, \Q, +UPSV AT command) and

the SARA-G3 and SARA-U2 series System Integration Manual [6].

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2.5.2.1 Autobauding feature

Only one shot autobauding is supported: the baud rate detection is performed only once, at module

start-up.

After detection the module works at the fixed baud rate (the detected one) and the baud rate can only

be changed via the appropriate AT command (+IPR, for more details, see the u-blox AT Commands

Manual [4]).



The module detects the followings baud rates (bit/s): 1’200, 2’400, 4’800, 9’600, 19’200, 38’400,

57’600, 115’200, 230’400



The only detectable frame configurations are: 7E1, 7O1, 8N1, 8E1, 8O1

2.5.3 Universal Serial Bus (USB)

SARA-U2 series modules include a high-speed USB 2.0 compliant interface with a maximum

480 Mbit/s data rate. The module itself acts as a USB device and can be connected to any USB host.

The USB is the suitable interface for transferring high speed data between SARA-U2 series and a host

processor, available for AT commands, data communication, FW upgrade by means of the FOAT

feature, FW upgrade by means of the u-blox EasyFlash tool and for diagnostic purpose.

The USB_D+ / USB_D- lines carry the USB serial data and signaling. The USB interface is automatically

enabled by an external valid USB VBUS supply voltage (5.0 V typical) applied on the VUSB_DET pin.

SARA-U2 series modules can provide the following functions over the USB interface:



CDC-ACM for AT commands and data communication

CDC-ACM for GNSS tunneling

CDC-ACM for diagnostic

CDC-ACM for SAP (SIM Access Profile)

CDC-ECM for Ethernet-over-USB

☞

CDC-ECM for Ethernet-over-USB function is not supported by the “00” product version.

The default configuration of the USB interface provides 7 USB CDC-ACM modem COM ports:



USB1: AT and data

USB2: AT and data

USB3: AT and data

USB4: GNSS tunneling

USB5: Primary Log (diagnostic purpose)

USB6: Secondary Log (diagnostic purpose)

USB7: SAP (SIM Access Profile)

The user can concurrently use the AT command interface on one CDC, and Packet-Switched / Circuit-

Switched Data communication on another CDC.

The USB interface can be configured by the AT+UUSBCONF command to provide a different set of

functions, including 1 CDC-ECM for Ethernet-over-USB and 4 CDC-ACM modem COM ports

enumerated as follows:



USB1: AT and data

USB2: GNSS tunneling

USB3: Primary Log (diagnostic purpose)

USB4: SAP (SIM Access Profile)

☞

The default profile of the USB interface cannot be changed on the “00” product version.

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SARA-U2 series - Data Sheet

For more details regarding the USB configurations and capabilities, see the SARA-G3 and SARA-U2

series System Integration Manual [6] and the u-blox AT Commands Manual [4] (+UUSBCONF AT

command).

USB drivers are available for the following operating system platforms:



Windows XP

Windows Vista

Windows 7

Windows 8

Windows 8.1

Windows 10

Windows CE 5.0

Windows Embedded CE 6.0

Windows Embedded Compact 7

Windows Embedded Automotive 7

Windows Mobile 5

Windows Mobile 6

Windows Mobile 6.1

Windows Mobile 6.5

SARA-U2 modules are compatible with the standard Linux/Android USB kernel drivers.

2.5.4 DDC (I²C) bus interface

SARA-U2 modules include an I²C compatible DDC interface (SDA, SCL) available to communicate with

a u-blox GNSS receiver and with external I²C devices as an audio codec: SARA-U2 module acts as an

I²C master which can communicate with I²C slaves in accordance to the I²C bus specifications [12].

2.6 Audio

SARA-U2 modules have one 4-wire I²S digital audio interface (I2S_CLK, I2S_RXD, I2S_TXD and

I2S_WA) that can be configured by AT commands in PCM or in normal I²S mode. (For more details,

see the u-blox AT Commands Manual [4] and the SARA-G3 and SARA-U2 series System Integration

Manual [6].)

SARA-U2 modules provide a digital clock output (CODEC_CLK) for an external audio codec.

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2.7 GPIO

SARA-U2 modules provide nine pins (GPIO1, GPIO2, GPIO3, GPIO4, I2S_RXD, I2S_TXD, I2S_CLK,

I2S_WA, SIM_DET) which can be configured as general purpose input/output, or to provide the

custom functions listed in Table 5 via u-blox AT commands. For further details, see the SARA-G3 and

SARA-U2 series System Integration Manual [6] and the u-blox AT Commands Manual [4], +UGPIOC,

+UGPIOR, +UGPIOW, +UGPS, +UGPRF, +USPM, +UDCONF=50, +ULGASP AT commands.

Function

Description

Module

Default GPIO

Configurable GPIOs

GSM Tx-burst

indication

GSM transmit slot indication

SARA-U201, --

SARA-U260,

SARA-U270

GPIO1

GNSS supply enable

GNSS data ready

Enable/disable the supply of the u-blox

GNSS receiver connected to the cellular

module

All

GPIO2

GPIO1, GPIO2,

GPIO3, GPIO4,

SIM_DET

Input to sense when the u-blox GNSS

receiver connected to the cellular

module is ready for sending data over

the DDC (I²C) interface

All

GPIO3

GPIO4

GPIO3

GNSS RTC sharing

RTC synchronization signal to the u-blox All

GNSS receiver connected to the cellular

module

GPIO4

SIM card detection

SIM card physical presence detection

All

SIM_DET

--

SIM_DET

SIM card hot insertion

Enable/disable SIM interface upon

detection of external SIM card physical

insertion/removal

Last gasp²²

Input to trigger the delivery of a last

alarm notification to a remote entity

SARA-U201, --

SARA-U270

GPIO3

Network status

indication

Network status: registered 2G / 3G home All

network, registered 2G / 3G roaming, 2G

/ 3G data transmission, no service

--

GPIO1, GPIO2,

GPIO3, GPIO4,

SIM_DET

Module status

indication

Module status: power off mode, i.e.

module switched off, versus idle, active

or connected mode, i.e. module switched

on

All

--

GPIO1

Module operating mode Module operating mode: idle mode

All

--

SIM_DET

indication

versus active or connected mode

I²S digital audio

interface

I²S digital audio interface (I2S_RXD,

I2S_TXD, I2S_CLK, I2S_WA respectively)

I2S_RXD, I2S_TXD,

I2S_CLK, I2S_WA

I2S_RXD, I2S_TXD,

I2S_CLK, I2S_WA

General purpose input

Input to sense high or low digital level

--

All

General purpose output Output to set the high or the low digital All

level

Pin disabled

Tri-state with an internal active pull-

down enabled

All

GPIO1

All

Table 5: GPIO custom functions configuration

²²Not supported by "00", "03", "53", "63", "73" product versions

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3 Pin definition

3.1 Pin assignment

64 63 62 61 60 59 58 57 56 55 54

53

52

51

GND

V_BCKP

GND

VCC

1

2

65

71

66

72

67

73

68

74

69

75

70

76

78

VCC

3

VCC

4

50

49

48

47

46

45

44

43

42

41

V_INT

GND

77

5

RSVD

6

DSR

RSVD

7

RI

RSVD

8

DCD

RSVD

79

80

9

DTR

RSVD

10

11

12

13

14

15

16

17

18

19

20

21

RTS

RSVD

SARA-U2

CTS

GND

Top View

TXD

SIM_DET

VSIM

RXD

81

82

40

39

38

37

36

35

34

33

GND

SIM_RST

SIM_IO

SIM_CLK

I2S_RXD

I2S_CLK

I2S_TXD

I2S_WA

RSVD

PWR_ON

GPIO1

VUSB_DET

RESET_N

CODEC_CLK

GND

83

85

91

84

90

96

Pin 65-96: GND

86

92

87

88

89

95

93

94

GND

22 23 24 25 26 27 28 29 30 31 32

Figure 4: SARA-U2 series pin assignment

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SARA-U2 series - Data Sheet

No

Name

Power

I/O

Description

Remarks

domain

1

GND

-

N/A

I/O

Ground

All the GND pins must be connected to ground

2

V_BCKP

Real Time Clock

supply input/output

V_BCKP = 1.8 V (typical) generated by the module to

supply the Real Time Clock when VCC supply voltage is

within valid operating range.

See section 4.2.2 for detailed electrical specs.

3

4

GND

-

N/A

O

Ground

All the GND pins must be connected to ground

V_INT

Generic Digital

Interfaces supply

output

V_INT = 1.8 V (typical) generated by the module when it is

switched on and the RESET_N (external reset input pin) is

not forced to the low level.

See section 4.2.2 for detailed electrical specs.

5

6

GND

DSR

-

N/A

O

Ground

All the GND pins must be connected to ground

GDI

UART data set ready Circuit 107 (DSR) in ITU-T V.24.

Output driver class D.

PU/PD class a. Value at internal reset: T/PU.

See section 4.2.9 for detailed electrical specs.

7

RI

GDI

O

I

UART ring indicator

Circuit 125 (RI) in ITU-T V.24.

Output driver class C_0.

PU/PD class c. Value at internal reset: T/PD.

See section 4.2.9 for detailed electrical specs.

8

DCD

DTR

RTS

CTS

TXD

RXD

UART data carrier

detect

Circuit 109 (DCD) in ITU-T V.24.

Output driver class C_0.

PU/PD class c. Value at internal reset: T/PD.

See section 4.2.9 for detailed electrical specs.

9

UART data terminal

ready

Circuit 108/2 (DTR) in ITU-T V. 24.

Internal active pull-up to V_INT enabled.

PU/PD class c. Value at internal reset: T/PD.

See section 4.2.9 for detailed electrical specs.

10

11

12

13

I

UART ready to send

UART clear to send

UART data input

Circuit 105 (RTS) in ITU-T V.24.

Internal active pull-up to V_INT enabled.

PU/PD class a. Value at internal reset: T/PU.

See section 4.2.9 for detailed electrical specs.

O

I

Circuit 106 (CTS) in ITU-T V.24.

Output driver class A.

PU/PD class a. Value at internal reset: T/PU.

See section 4.2.9 for detailed electrical specs.

Circuit 103 (TxD) in ITU-T V.24.

Internal active pull-up to V_INT enabled.

PU/PD class a. Value at internal reset: T/PD.

See section 4.2.9 for detailed electrical specs.

O

UART data output

Circuit 104 (RxD) in ITU-T V.24.

Output driver class A.

PU/PD class a. Value at internal reset: T/PU.

See section 4.2.9 for detailed electrical specs.

14

15

GND

-

N/A

I

Ground

All the GND pins must be connected to ground

PWR_ON

POS

Power-on input

The PWR_ON pin has high input impedance:

do not leave it floating in noisy environment

(an external pull-up resistor is required)

See section 4.2.6 for detailed electrical specs.

16

17

GPIO1

GDI

I/O

I

GPIO

GPIO configurable as described in Table 5.

Output driver class A.

PU/PD class a. Value at internal reset: T/PD.

See section 4.2.9 for detailed electrical specs.

VUSB_DET

USB

USB detect input

Input for VBUS (5 V typical) USB supply sense.

See section 4.2.10 for detailed electrical specs.

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Pin definition

Page 21 of 61

SARA-U2 series - Data Sheet

No

Name

Power

I/O

Description

Remarks

domain

18

RESET_N

ERS

I

External reset input

Internal 10 k pull-up resistor to V_BCKP.

See section 4.2.7 for detailed electrical specs.

19

CODEC_CLK GDI

O

Clock output

Output driver class B.

PU/PD class b. Value at internal reset: T/PD.

See section 4.2.9 for detailed electrical specs.

20

21

GND

GPIO2

-

N/A

I/O

Ground

GPIO

All the GND pins must be connected to ground

-

22

23

-

GDI

GPIO configurable as described in Table 5.

Output driver class A.

PU/PD class a. Value at internal reset: T/PD.

See section 4.2.9 for detailed electrical specs.

24

25

26

GPIO3

GPIO4

SDA

GDI

I/O

GPIO

GPIO configurable as described in Table 5.

Output driver class A.

PU/PD class a. Value at internal reset: T/PD.

See section 4.2.9 for detailed electrical specs.

GPIO

GPIO configurable as described in Table 5.

Output driver class A.

PU/PD class a. Value at internal reset: T/PD.

See section 4.2.9 for detailed electrical specs.

DDC

GDI

I/O

I

I²C bus data line

Fixed open drain. No internal pull-up.

Value at internal reset: T.

See section 4.2.11 for detailed electrical specs.

AUX UART data input Not supported by "00","03","53","63","73" product versions

Circuit 103 (TxD) in ITU-T V.24.

Internal active pull-up to V_INT enabled.

PU/PD class a. Value at internal reset: T.

See section 4.2.9 for detailed electrical specs.

27

SCL

DDC

GDI

O

I²C bus clock line

Fixed open drain. No internal pull-up.

Value at internal reset: T.

See section 4.2.11 for detailed electrical specs.

AUX UART data

output

Not supported by "00","03","53","63","73" product versions

Circuit 104 (RxD) in ITU-T V.24.

Output driver class E.

PU/PD class a. Value at internal reset: T.

See section 4.2.9 for detailed electrical specs.

28

29

USB_D-

USB_D+

USB

I/O

USB Data Line D-

USB Data Line D+

90  nominal differential impedance.

Pull-up, pull-down and series resistors as required by USB

2.0 specifications [15] are part of the USB pin driver and

need not be provided externally.

Value at internal reset: T.

See section 4.2.10 for detailed electrical specs.

90  nominal differential impedance.

Pull-up, pull-down and series resistors as required by USB

2.0 specifications [15] are part of the USB pin driver and

need not be provided externally.

Value at internal reset: T.

See section 4.2.10 for detailed electrical specs.

30

31

GND

-

N/A

Ground

All the GND pins must be connected to ground

Leave unconnected.

RSVD

GND

RESERVED pin

Ground

32

33

All the GND pins must be connected to ground

This pin must be connected to GND.

RSVD

RESERVED pin

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Pin definition

Page 22 of 61

SARA-U2 series - Data Sheet

No

Name

Power

I/O

Description

Remarks

domain

34

I2S_WA

GDI

I/O /

I/O

I²S word alignment /

GPIO

Configurable as I²S word alignment (Input with internal

active pull-down enabled in slave mode, Output in master

mode), or as GPIO (see Table 5).

Output driver class C.

PU/PD class a. Value at internal reset: T/PD.

See section 4.2.9 for detailed electrical specs.

35

36

I2S_TXD

I2S_CLK

GDI

O /

I/O

I²S transmit data /

GPIO

Configurable as I²S transmit data out, or as GPIO (see

Table 5)

Output driver class C.

PU/PD class a. Value at internal reset: T/PD.

See section 4.2.9 for detailed electrical specs.

Configurable as I²S clock (Input with internal active pull-

down in slave mode, Output in master mode), or as GPIO

(see Table 5).

I/O /

I/O

I²S clock /

GPIO

Output driver class C.

PU/PD class a. Value at internal reset: T/PD.

See section 4.2.9 for detailed electrical specs.

37

I2S_RXD

GDI

I /

I/O

I²S receive data /

GPIO

Configurable as I²S receive data input (with internal active

pull-down enabled), or as GPIO (see Table 5).

Output driver class C.

PU/PD class a. Value at internal reset: T/PD.

See section 4.2.9 for detailed electrical specs.

38

39

SIM_CLK

SIM_IO

SIM

O

SIM clock

SIM data

Value at internal reset: L.

See section 4.2.8 for detailed electrical specs.

I/O

Internal 4.7 k pull-up resistor to VSIM.

Value at internal reset: L/PD.

See section 4.2.8 for detailed electrical specs.

40

41

SIM_RST

VSIM

SIM

-

O

SIM reset

Value at internal reset: L.

See section 4.2.8 for detailed electrical specs.

SIM supply output

VSIM = 1.80 V typical or 2.90 V typical generated by the

module according to the SIM card type.

See section 4.2.2 for detailed electrical specs.

42

SIM_DET

GDI

I

SIM detection

Configurable for the SIM card presence detection function,

or as GPIO (see Table 5).

PU/PD class a. Value at internal reset: T/PD.

See section 4.2.9 for detailed electrical specs.

43

44

45

46

47

48

49

50

51

GND

-

N/A

I

Ground

All the GND pins must be connected to ground

Leave unconnected.

RSVD

GND

RESERVED pin

Ground

Leave unconnected.

All the GND pins must be connected to ground

VCC

Module supply input

All VCC pins must be connected to external supply.

See sections 4.2.2 and 4.2.3 for detailed specs.

52

53

VCC

-

I

Module supply input

All VCC pins must be connected to external supply.

See sections 4.2.2 and 4.2.3 for detailed specs.

All VCC pins must be connected to external supply.

See sections 4.2.2 and 4.2.3 for detailed specs.

54

55

56

GND

ANT

-

N/A

I/O

Ground

All the GND pins must be connected to ground

Ground

RF input/output

50  nominal impedance

See section 4.2.4 for detailed electrical specs.

UBX-13005287 - R20

Pin definition

Page 23 of 61

SARA-U2 series - Data Sheet

No

Name

Power

I/O

Description

Remarks

domain

57

58

59

60

61

GND

-

N/A

I

Ground

All the GND pins must be connected to ground

GND

-

Ground

GND

-

Ground

GND

-

Ground

GND

-

Ground

62

ANT_DET

ADC

Antenna detection

Antenna presence detection function.

See section 4.2.5 for detailed electrical specs.

63

64

GND

-

N/A

Ground

All the GND pins must be connected to ground

65-96 GND

Table 6: SARA-U2 series module pin-out

☞

For more information about pin-outs, see the SARA-G3 and SARA-U2 series System Integration

Manual [6].

For an explanation of the abbreviations and terms used, see Appendix A.

UBX-13005287 - R20

Pin definition

Page 24 of 61

SARA-U2 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 (section

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.

Electrical characteristics are defined according to verification on a representative number of

samples or according to simulation.

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 Absolute Maximum Rating System (IEC 134).

Symbol

Description

Condition

Min.

Max.

5.50

5.35

2.00

3.60

2.10

5.50

3.00

-10

Unit

VCC

Module supply voltage

USB detection pin

USB D+/D- pins

Input DC voltage at VCC pins

Input DC voltage at VUSB_DET pin

Input DC voltage at USB_D+ and USB_D- pins

Input DC voltage at V_BCKP pin

-0.30

-1.00

-0.15

-0.30

-0.15

-0.30

-0.15

V

VUSB_DET

USB

V

V_BCKP

GDI

RTC supply voltage

V

Generic digital interfaces Input DC voltage at Generic digital interfaces pins

V

DDC

DDC interface

Input DC voltage at DDC interface pins

Input DC voltage at SIM interface pin

Input DC voltage at RESET_N external reset pin

Input DC voltage at PWR_ON power-on pin

Input DC voltage at ANT_DET pin

V

SIM

SIM interface

V

ERS

External reset signal

Power-on signal

V

POS

V

ADC

Antenna detection pin

Antenna power

V

P_ANT

Rho_ANT

Tstg

Input in-band RF power at ANT pin

dBm

VSWR

°C

Antenna ruggedness

Storage temperature

Output RF load mismatch ruggedness at ANT pin

15:1

-40

90

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 the table above, must be limited to

values within the specified boundaries by using appropriate protection devices.

4.1.1 Maximum ESD

Parameter

Module

Max.

1000

4000

8000

2000

4000

Unit Remarks

ESD sensitivity for all pins except ANT pinAll

V

Human Body Model according to JESD22-A114F

ESD sensitivity for ANT pin

ESD immunity for ANT pin

All

Human Body Model according to JESD22-A114F

Contact Discharge according to IEC 61000-4-2

Air Discharge according to IEC 61000-4-2

Contact Discharge according to IEC 61000-4-2

Air Discharge according to IEC 61000-4-2

SARA-U201

All except

SARA-U201

Table 8: Maximum ESD ratings

⚠

SARA-U2 modules are Electrostatic Sensitive Devices (ESD) and require special precautions when

handling. See section 7.4 for ESD handling instructions.

UBX-13005287 - R20

Electrical specifications

Page 25 of 61

SARA-U2 series - Data Sheet

4.2 Operating conditions

☞

Unless otherwise indicated, all operating condition specifications assume 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.

Typ.

Max.

Units

Remarks

Topr

Operating

All

-40

+85

°C

temperature range

Normal operating

temperature range

SARA-U201

-20

+65

+55

°C

See section 4.2.1.1

SARA-U260,

SARA-U270,

SARA-U280

Extended operating All

temperature range

-40

+65

+55

-20

°C

Extended operating

temperature range 1

See section 4.2.1.2

SARA-U201

+85

Extended operating

temperature range 2

See section 4.2.1.3

SARA-U260,

SARA-U270,

SARA-U280

Extended operating

temperature range 2

See section 4.2.1.3

Table 9: Environmental conditions

4.2.1.1 Normal operating temperature range

The cellular module is fully functional and meets the 3GPP / ETSI specification across the specified

temperature range.

4.2.1.2 Extended operating temperature range 1

The cellular module is fully functional across the specified temperature range. Occasional deviations

from the 3GPP specification may occur.

4.2.1.3 Extended operating temperature range 2

The cellular module is functional across the specified temperature range. Occasional deviations from

the 3GPP specification may occur. Thermal protection including automatic shutdown is implemented

for protection against overheating. Thermal protection is disabled for emergency calls. For more

details, see the u-blox AT Commands Manual [4], +USTS AT command).

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Electrical specifications

Page 26 of 61

SARA-U2 series - Data Sheet

4.2.2 Supply/Power pins

Pin Name

Parameter

Min.

3.30

3.10

1.00

Typ.

Max.

4.40

4.50

1.90

Unit

V

VCC

Module supply normal operating input voltage²³

Module supply extended operating input voltage²⁴

RTC supply input voltage

3.80

V

V_BCKP

1.80

V

RTC supply average current consumption, at V_BCKP = 1.8 V

2.00

µA

Table 10: Input characteristics of the Supply/Power pins

Pin Name

Parameter

Min.

Typ.

Max.

Unit

VSIM

SIM supply output voltage

1.76

2.84

1.71

1.80

2.90

1.80

1.83

2.94

1.89

3

V

V_BCKP

V_INT

RTC supply output voltage

V

RTC supply output current capability

Digital I/O Interfaces supply output voltage

mA

V

1.73

1.80

1.87

15

Digital I/O Interfaces supply output peak-to-peak voltage ripple

during active or connected mode

mV

Digital I/O Interfaces supply output peak-to-peak voltage ripple

during low power idle mode with power saving enabled by

AT+UPSV command

70

mV

mA

Digital I/O Interfaces supply output current capability

Table 11: Output characteristics of the Supply/Power pins

²³Input voltage at VCC must be above the normal operating range minimum limit to switch on the module.

24

Occasional deviations from the 3GPP specifications may occur. Ensure that input voltage at VCC never drops below the

extended operating range minimum limit during module operation: the module may switch off when the VCC voltage value

drops below the extended operating range minimum limit.

UBX-13005287 - R20

Electrical specifications

Page 27 of 61

SARA-U2 series - Data Sheet

4.2.3 Current consumption

Mode

Condition

Band

Module

Min

Typ²⁵Max²⁶Unit

Power Off Mode

Averaged current, module switched off

SARA-U201

55

65

µA

SARA-U260,

SARA-U270,

SARA-U280

Idle-Mode

Averaged current over a 100 ms period,

USB interface disconnected

All

0.5

0.9

mA

(Power Saving enabled by

AT+UPSV, module in low

power idle-mode, equivalent

to +CFUN=0)

Averaged current over a 100 ms period,

USB interface connected and suspended

All

2G Cyclic Idle/Active-Mode Averaged current over a 10 minute period, All

All

0.9

1.2

mA

(Power Saving enabled by

AT+UPSV, Module registered

with network)

DRX = 9²⁷, +UPSV=2 or 3, USB disconnected

Averaged current over a 10 minute period, All

DRX = 5²⁸, +UPSV=1, USB disconnected

Averaged current over a 10 minute period, All

DRX = 5²⁸, +UPSV=1, USB suspended

1.6

2G Active-Mode

Averaged current over a 10 minute period, All

DRX = 5²⁸, USB disconnected

14.7

34.3

(Power Saving disabled by

AT+UPSV=0, Module

registered with network)

Averaged current over a 10 minute period, All

DRX = 5²⁸, USB connected and not

suspended

GSM Connected Mode

(Tx / Rx call enabled)

Peak current²⁹during a 1-slot Tx burst

Maximum Tx power

850,

900

All

1.55

45

1.90

A

Averaged current over a 10 s period,

1 Tx + 1 Rx slot, Minimum Tx power

All

SARA-U201,

SARA-U260,

SARA-U270

mA

Averaged current over a 10 s period,

1 Tx + 1 Rx slot, Maximum Tx power

850,

900

SARA-U201

240

210

mA

SARA-U260,

SARA-U270

1800,

1900

SARA-U201

160

135

mA

SARA-U260,

SARA-U270

GPRS Connected Mode

(Tx / Rx call enabled)

Averaged current over a 10 s period,

4 Tx + 1 Rx slots, Maximum Tx power³⁰

850,

900

SARA-U201

600

560

mA

SARA-U260,

SARA-U270

1800,

1900

SARA-U201

400

350

mA

SARA-U260,

SARA-U270

EDGE Connected Mode

(Tx / Rx call enabled)

Averaged current over a 10 s period,

4 Tx + 1 Rx slots, Maximum Tx power³⁰

850,

900

SARA-U201

470

490

mA

1800,

1900

SARA-U201

²⁵Typical values with a matched antenna

²⁶Maximum values with a mismatched antenna

²⁷Module is registered with the network, with a paging period of 2.12 s (2G network DRX setting = 9), with none neighbour cell.

²⁸Module is registered with the network, with a paging period of 1.18 s (2G network DRX setting = 5), with 16 neighbour cells.

²⁹It is recommended to use this figure to dimension maximum current capability of power supply.

³⁰Condition for GPRS and EDGE multi-slot output power: Multi-Slot Power Reduction profile 2 (+UDCONF=40 AT command

default value).

UBX-13005287 - R20

Electrical specifications

Page 28 of 61

SARA-U2 series - Data Sheet

Mode

Condition

Band

Module

Min

Typ²⁵Max²⁶Unit

3G Cyclic Idle/Active-Mode Averaged current over a 10 minute period, All

All

0.9

mA

(Power Saving enabled by

AT+UPSV, Module

registered with network)

DRX = 9³¹, +UPSV=2 or 3, USB disconnected

Averaged current over a 10 minute period, All

DRX = 7³², +UPSV=1, USB disconnected

All

1.3

Averaged current over a 10 minute period, All

DRX = 7³², +UPSV=1, USB suspended

1.7

3G Active-Mode

Averaged current over a 10 minute period, All

DRX = 7³², USB disconnected

14.1

33.7

(Power Saving disabled by

AT+UPSV=0, Module

registered with network)

Averaged current over a 10 minute period, All

DRX = 7³², USB connected and not

suspended

UMTS Connected Mode

(Tx / Rx call enabled)

Averaged current over a 10 s period,

12.2 kbit/s UL, 12.2 kbit/s DL

Minimum Tx power

1, 2

All

120

115

mA

5, 8, 19

Averaged current over a 10 s period,

12.2 kbit/s UL, 12.2 kbit/s DL

Tx power = 0 dBm

1, 2

All

140

135

mA

5, 8, 19

Averaged current over a 10 s period,

12.2 kbit/s UL, 12.2 kbit/s DL

Tx power = 12 dBm

1, 2

All

200

190

mA

5, 8, 19

Averaged current over a 10 s period,

12.2 kbit/s UL, 12.2 kbit/s DL

Tx power = 18 dBm

1, 2

All

350

325

mA

5, 8, 19

Averaged current over a 10 s period,

12.2 kbit/s UL, 12.2 kbit/s DL

Maximum Tx power

1, 2

SARA-U201

510

625

mA

SARA-U260,

SARA-U270,

SARA-U280

5, 8, 19

1, 2

SARA-U201

430

565

mA

SARA-U260,

SARA-U270,

SARA-U280

HSDPA Connected Mode

(Tx / Rx call enabled)

Averaged current over a 10 s period,

Maximum DL data rate (HSDPA)

Maximum Tx power

SARA-U201

550

680

mA

SARA-U260,

SARA-U270,

SARA-U280

5, 8, 19

1, 2

SARA-U201

500

595

mA

SARA-U260,

SARA-U270,

SARA-U280

HSUPA or HSPA

Connected Mode

(Tx / Rx call enabled)

Averaged current over a 10 s period,

Maximum UL data rate (HSUPA) or

Maximum both UL/DL data rate (HSPA)

Maximum Tx power

SARA-U201

425

580

mA

SARA-U260,

SARA-U270,

SARA-U280

5, 8, 19

SARA-U201

390

510

mA

SARA-U260,

SARA-U270,

SARA-U280

Table 12: VCC current consumption

³¹Module is registered with the network, with a paging period of 5.12 s (3G network DRX setting = 9).

³²Module is registered with the network, with a paging period of 1.28 s (3G network DRX setting = 7).

UBX-13005287 - R20

Electrical specifications

Page 29 of 61

SARA-U2 series - Data Sheet

4.2.4 RF characteristics

The 3G and 2G bands supported by each SARA-U2 series module are defined in Table 2, while the

following Table 13 lists the Transmitting and Receiving frequencies for each 3G and 2G band,

according to 3GPP TS 34.121-1 [13] and 3GPP TS 51.010-1 [14].

Parameter

Min.

Max.

Unit

Remarks

Frequency range

GSM 850

Uplink

824

869

880

925

849

894

915

MHz

Module transmit

Module receive

Module transmit

Module receive

Module transmit

Module receive

Module transmit

Module receive

Module transmit

Module receive

Module transmit

Module receive

Module transmit

Module receive

Module transmit

Module receive

Module transmit

Module receive

Downlink

Uplink

Frequency range

E-GSM 900

Downlink

Uplink

960

1785

1880

1910

1990

845

890

849

894

915

Frequency range

DCS 1800

1710

1805

1850

1930

830

875

Downlink

Uplink

Frequency range

PCS 1900

Downlink

Uplink

Frequency range

UMTS Band 19 (800 MHz)

Downlink

Uplink

Frequency range

UMTS Band 5 (850 MHz)

824

869

880

925

Downlink

Uplink

Frequency range

UMTS Band 8 (900 MHz)

Downlink

Uplink

960

1910

1990

1980

2170

Frequency range

UMTS Band 2 (1900 MHz)

1850

1930

1920

2110

Downlink

Uplink

Frequency range

UMTS Band 1 (2100 MHz)

Downlink

Table 13: Operating RF frequency bands

SARA-U2 series modules include a UE Power Class 3 transmitter for all the 3G bands, a GMSK Power

Class 4 transmitter for the GSM/E-GSM 2G bands, and a GMSK Power Class 1 transmitter for the

DCS/PCS 2G bands (see Table 2).

SARA-U201 modules also include an 8-PSK Power Class E2 transmitter for all 2G bands (see Table 2).

Output power and characteristics are compliant with 3GPP TS 34.121-1 [13] and 3GPP TS 51.010-1 [14].

SARA-U2 series modules 3G and 2G receiver characteristics are compliant to 3GPP TS 34.121-1 [13]

and 3GPP TS 51.010-1 [14], with conducted receiver sensitivity performance specified in Table 14.

Parameter

Min.

Typ.

Max.

Unit

Remarks

Receiver input sensitivity

GSM 850 / E-GSM 900

-109.0

dBm

Downlink RF level @ BER Class II < 2.4%

Receiver input sensitivity

DCS 1800 / PCS 1900

-109.0

-111.0

-110.0

dBm

Downlink RF level @ BER Class II < 2.4%

Downlink RF level for RMC @ BER < 0.1%

Receiver input sensitivity

UMTS Band 19 (850 MHz)

Receiver input sensitivity

UMTS Band 5 (850 MHz)

Receiver input sensitivity

UMTS Band 8 (900 MHz)

Receiver input sensitivity

UMTS Band 2 (1900 MHz)

Receiver input sensitivity

UMTS Band 1 (2100 MHz)

Condition: 50  source

Table 14: Receiver sensitivity performance

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Electrical specifications

Page 30 of 61

SARA-U2 series - Data Sheet

4.2.5 ANT_DET pin

Pin name

Parameter

Min.

Typ.

Max.

Unit

Remarks

ANT_DET

Output DC current pulse

value

10

µA

Output DC current pulse

time length

128

µs

Table 15: ANT_DET pin characteristics

4.2.6 PWR_ON pin

Pin name

Parameter

Min.

Typ.

Max.

Unit Remarks

PWR_ON

Internal supply for Power-

On Input Signal

1.71

1.80

1.89

V

RTC supply (V_BCKP)

L-level input

-0.30

1.50

0.65

4.40

V

High input impedance (no internal pull-up)

H-level input

V

L-level input current

-6

µA

µs

PWR_ON low time

50

80

to switch on the module

PWR_ON low time

1000

ms

to switch off the module

Table 16: PWR_ON pin characteristics (POS domain)

4.2.7 RESET_N pin

Pin name

Parameter

Min.

Typ.

Max.

Unit

Remarks

RESET_N

Internal supply for External 1.71

Reset Input Signal

1.80

1.89

V

RTC supply (V_BCKP)

L-level input

-0.30

1.32

0.51

2.01

V

H-level input

V

L-level input current

Pull-up resistance

-180

10

µA

k

Internal pull-up to RTC supply (V_BCKP)

Table 17: RESET_N pin characteristics (ERS domain)

The RESET_N input line has to be driven as described in Figure 5 to perform an abrupt “external” or

“hardware” reset (reboot) of the SARA-U201 modules:



RESET_N line has to be set to the LOW level for 50 ms (minimum)

RESET_N

Time

50 ms < T

Figure 5: RESET_N line waveform timings to perform an abrupt reset of SARA-U201 modules

The RESET_N input line has to be driven as described in Figure 6 to perform an abrupt “external” or

“hardware” reset (reboot) of the SARA-U260, SARA-U270 and SARA-U280 modules:



First, RESET_N line has to be set to the LOW level for 100 µs (minimum) to 200 µs (maximum)

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Electrical specifications

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SARA-U2 series - Data Sheet



Then, RESET_N line has to be released to the HIGH level for 2 ms (minimum) to 4 ms (maximum)

Then, RESET_N line has to be set to the LOW level for 500 ms (minimum)

2 ms < T < 4 ms

RESET_N

Time

100 us < T < 200 us

500 ms < T

Figure 6: RESET_N line waveform timings to perform an abrupt reset of SARA-U260, SARA-U270 and SARA-U280 modules

4.2.8 (U)SIM pins

The SIM pins are a dedicated interface to the external SIM card/chip. The electrical characteristics

fulfill the regulatory specification requirements. The values in Table 18 are for information only.

Parameter

Min.

Typ.

Max.

Unit

Remarks

Low-level input

0.00

1.29

0.35

0.57

3.30

0.35

V

VSIM = 1.80 V

V

VSIM = 2.90 V

High-level input

V

VSIM = 1.80 V

2.07

V

VSIM = 2.90 V

Low-level output

0.00

1.80

2.90

V

VSIM = 1.80 V, Max value at I_OL= +1.0 mA

VSIM = 2.90 V, Max value at I_OL= +1.0 mA

VSIM = 1.80 V, Min value at I_OH= -1.0 mA

VSIM = 2.90 V, Min value at I_OH= -1.0 mA

0.2V < V_IN< 3.3V

V

High-level output

1.26

V

2.03

V

Input/Output leakage current

0.7

µA

k

Internal pull-up resistor on

SIM_IO to VSIM

4.7

Clock frequency on SIM_CLK

3.25

MHz

Table 18: (U)SIM pin characteristics (SIM domain)

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SARA-U2 series - Data Sheet

4.2.9 Generic Digital Interfaces pins

Parameter

Min.

Typ.

Max.

Unit

Remarks

Internal supply for GDI domain 1.73

1.80

1.87

V

Generic Digital Interfaces supply (V_INT)

Input characteristic:

L-level input

-0.20

0.35

Input characteristic:

H-level input

1.31

1.93

V

Output characteristics:

L-level output

0.00

1.80

0.20

0.35

0.20

0.35

0.20

0.35

0.45

0.20

0.35

0.20

V

Max value at I_OL= +0.1 mA for driver class A

Max value at I_OL= +6.0 mA for driver class A

Max value at I_OL= +0.1 mA for driver class B

Max value at I_OL= +4.0 mA for driver class B

Max value at I_OL= +0.1 mA for driver class C

Max value at I_OL= +2.0 mA for driver class C

Max value at I_OL= +2.0 mA for driver class C_0

Max value at I_OL= +0.1mA for driver class D

Max value at I_OL= +1.0 mA for driver class D

Max value at I_OL= +0.1 mA for driver class E

Min value at I_OH= -6.0 mA for driver class A

Min value at I_OH= -0.1 mA for driver class A

Min value at I_OH= -4.0 mA for driver class B

Min value at I_OH= -0.1 mA for driver class B

Min value at I_OH= -2.0 mA for driver class C

Min value at I_OH= -0.1 mA for driver class C

Min value at I_OH= -2.0 mA for driver class C_0

Min value at I_OH= -1.0 mA for driver class D

Min value at I_OH= -0.1 mA for driver class D

Min value at I_OH= -0.1 mA for driver class E

0.2 V < V_IN< 1.93 V

V

Output characteristics:

H-level output

1.45

1.60

1.45

1.60

1.45

1.60

1.35

1.45

1.60

V

Input/Output leakage current

Pull-up input current

0.7

µA

-240

-150

-125

+200

+150

+45

PU Class a

PU Class b

PU Class c

Pull-down input current

PD Class a

PD Class b

PD Class c

Table 19: Generic Digital Interfaces pin characteristics (GDI domain)

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SARA-U2 series - Data Sheet

4.2.9.1 AC characteristics of digital audio interfaces pins

The 4-wire I²S digital audio interface can be configured in 4 different modes:



Normal I²S mode – Master mode

Normal I²S mode – Slave mode

PCM mode – Master mode

PCM mode – Slave mode

AC characteristics of the 4 different modes of the I²S digital audio interface are reported as follows.

Normal I²S mode – Master mode

T1

T2

T3

CLK

(Output)

T4

T5

TXD / WA

(Output)

T6

T7

RXD

(Input)

Figure 7: AC characteristics of digital audio interface in Normal I²S mode (<I2S_mode> = 2,4,6,8,10,12), Master mode

T1

T2

T3

CLK

(Output)

T4

T5

TXD / WA

(Output)

T6

T7

RXD

(Input)

Figure 8: AC characteristics of digital audio interface in Normal I²S mode (<I2S_mode> = 3,5,7,9,11,13), Master mode

Parameter Description

T1 I2S clock period

Min.

Typ.

Max.

Unit Remarks

3.902 3.906

2.830 2.834

2.600 2.604

µs

<I2S_sample_rate>=0

<I2S_sample_rate>=1

<I2S_sample_rate>=2

<I2S_sample_rate>=3

<I2S_sample_rate>=4

<I2S_sample_rate>=5

<I2S_sample_rate>=6

<I2S_sample_rate>=7

<I2S_sample_rate>=8

1.949

1.413

1.298

0.973

1.953

1.417

1.302

0.977

0.705 0.709

0.647 0.651

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SARA-U2 series - Data Sheet

Parameter Description

1/T1 I2S clock frequency

Min.

Typ.

Max.

Unit Remarks

256.0

352.8

384.0

512.0

705.6

768.0

1024

256.3

353.3

384.6

513.1

707.6

770.4

1028

1419

kHz

µs

<I2S_sample_rate>=0

<I2S_sample_rate>=1

<I2S_sample_rate>=2

<I2S_sample_rate>=3

<I2S_sample_rate>=4

<I2S_sample_rate>=5

<I2S_sample_rate>=6

<I2S_sample_rate>=7

<I2S_sample_rate>=8

<I2S_sample_rate>=0

<I2S_sample_rate>=1

<I2S_sample_rate>=2

<I2S_sample_rate>=3

<I2S_sample_rate>=4

<I2S_sample_rate>=5

<I2S_sample_rate>=6

<I2S_sample_rate>=7

<I2S_sample_rate>=8

<I2S_sample_rate>=0

<I2S_sample_rate>=1

<I2S_sample_rate>=2

<I2S_sample_rate>=3

<I2S_sample_rate>=4

<I2S_sample_rate>=5

<I2S_sample_rate>=6

<I2S_sample_rate>=7

<I2S_sample_rate>=8

<I2S_sample_rate>=0

<I2S_sample_rate>=1

<I2S_sample_rate>=2

<I2S_sample_rate>=3

<I2S_sample_rate>=4

<I2S_sample_rate>=5

<I2S_sample_rate>=6

<I2S_sample_rate>=7

<I2S_sample_rate>=8

<I2S_sample_rate>=0

<I2S_sample_rate>=1

<I2S_sample_rate>=2

<I2S_sample_rate>=3

<I2S_sample_rate>=4

<I2S_sample_rate>=5

<I2S_sample_rate>=6

<I2S_sample_rate>=7

<I2S_sample_rate>=8

1411

1536

1545

T2

I2S clock high time

1.933

1.397

1.282

0.957

1.953

1.417

µs

1.302

0.977

µs

0.689 0.709

0.631 0.651

µs

0.468 0.488

0.334 0.354

0.306 0.326

µs

T3

I2S clock low time

1.933

1.397

1.282

0.957

1.953

1.417

µs

1.302

0.977

µs

0.689 0.709

0.631 0.651

µs

0.468 0.488

0.334 0.354

0.306 0.326

125.0

µs

I2S word alignment period

µs

90.70

µs

83.33

µs

62.50

µs

45.35

µs

41.67

µs

31.25

µs

22.68

µs

20.83

µs

I2S word alignment frequency

8.000

kHz

11.03

12.00

16.00

22.05

24.00

32.00

44.10

48.00

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SARA-U2 series - Data Sheet

Parameter Description

Min.

Typ.

Max.

Unit Remarks

T4

T5

T6

T7

I2S TXD invalid before I2S CLK high end

(before shifting edge of I2S CLK)

24

ns

<I2S_mode> = 2,4,6,8,10,12

<I2S_mode> = 3,5,7,9,11,13

<I2S_mode> = 2,4,6,8,10,12

<I2S_mode> = 3,5,7,9,11,13

<I2S_mode> = 2,4,6,8,10,12

<I2S_mode> = 3,5,7,9,11,13

<I2S_mode> = 2,4,6,8,10,12

<I2S_mode> = 3,5,7,9,11,13

I2S TXD invalid before I2S CLK low end

(before shifting edge of I2S CLK)

24

32

I2S TXD valid after I2S CLK low begin

(after shifting edge of I2S CLK)

I2S TXD valid after I2S CLK high begin

(after shifting edge of I2S CLK)

I2S RXD setup time before I2S CLK low end60

(before latching edge of I2S CLK)

I2S RXD setup time before I2S CLK high

end (before latching edge of I2S CLK)

60

I2S RXD hold time after I2S CLK high

begin (after latching edge of I2S CLK)

10

I2S RXD hold time after I2S CLK low begin 10

(after latching edge of I2S CLK)

Table 20: AC characteristics of digital audio interface in Normal I²S mode and Master mode enabled

Normal I²S mode – Slave mode

T1

CLK

(Input)

T4

T5

TXD

(Output)

T6

T7

RXD / WA

(Input)

Figure 9: AC characteristics of digital audio interface in Normal I²S mode (<I2S_mode> = 2,4,6,8,10,12), Slave mode

T1

CLK

(Input)

T4

T5

TXD

(Output)

T6

T7

RXD / WA

(Input)

Figure 10: AC characteristics of digital audio interface in Normal I²S mode (<I2S_mode> = 3,5,7,9,11,13), Slave mode

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SARA-U2 series - Data Sheet

Parameter Description

Min.

Typ.

Max.

Unit Remarks

T1

I2S clock period

3.906

2.834

2.604

1.953

1.417

µs

<I2S_sample_rate>=0

<I2S_sample_rate>=1

<I2S_sample_rate>=2

<I2S_sample_rate>=3

<I2S_sample_rate>=4

<I2S_sample_rate>=5

<I2S_sample_rate>=6

<I2S_sample_rate>=7

<I2S_sample_rate>=8

<I2S_sample_rate>=0

<I2S_sample_rate>=1

<I2S_sample_rate>=2

<I2S_sample_rate>=3

<I2S_sample_rate>=4

<I2S_sample_rate>=5

<I2S_sample_rate>=6

<I2S_sample_rate>=7

<I2S_sample_rate>=8

<I2S_sample_rate>=0

<I2S_sample_rate>=1

<I2S_sample_rate>=2

<I2S_sample_rate>=3

<I2S_sample_rate>=4

<I2S_sample_rate>=5

<I2S_sample_rate>=6

<I2S_sample_rate>=7

<I2S_sample_rate>=8

<I2S_sample_rate>=0

<I2S_sample_rate>=1

<I2S_sample_rate>=2

<I2S_sample_rate>=3

<I2S_sample_rate>=4

<I2S_sample_rate>=5

<I2S_sample_rate>=6

<I2S_sample_rate>=7

<I2S_sample_rate>=8

<I2S_mode> = 2,4,6,8,10,12

1.302

0.977

0.709

0.651

1/T1

I2S clock frequency

256.0 kHz

352.8 kHz

384.0 kHz

512.0

705.6

768.0

1024

1411

kHz

µs

1536

I2S word alignment period

125.0

90.70

83.33

62.50

45.35

41.67

31.25

22.68

20.83

µs

I2S word alignment frequency

8.000 kHz

11.03

12.00

16.00

kHz

22.05 kHz

24.00 kHz

32.00 kHz

44.10

kHz

48.00 kHz

T4

T5

I2S TXD invalid before I2S CLK falling

edge (before shifting edge of I2S CLK)

24

32

ns

I2S TXD invalid before I2S CLK rising

edge (before shifting edge of I2S CLK)

<I2S_mode> = 3,5,7,9,11,13

<I2S_mode> = 2,4,6,8,10,12

<I2S_mode> = 3,5,7,9,11,13

I2S TXD valid after I2S CLK falling edge

(after shifting edge of I2S CLK)

I2S TXD valid after I2S CLK rising edge

(after shifting edge of I2S CLK)

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Electrical specifications

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SARA-U2 series - Data Sheet

Parameter Description

Min.

Typ.

Max.

Unit Remarks

T6

I2S RXD setup time before CLK rising

edge (before latching edge of I2S CLK)

60

ns

<I2S_mode> = 2,4,6,8,10,12

<I2S_mode> = 3,5,7,9,11,13

<I2S_mode> = 2,4,6,8,10,12

<I2S_mode> = 3,5,7,9,11,13

I2S RXD setup time before CLK falling

edge (before latching edge of I2S CLK)

60

T7

I2S RXD hold time after I2S CLK rising 10

edge (after latching edge of I2S CLK)

I2S RXD hold time after I2S CLK falling 10

edge (after latching edge of I2S CLK)

Table 21: AC characteristics of digital audio interface in Normal I²S mode and Slave mode enabled

PCM mode – Master mode

WA

(Output)

T4

T1

T5

CLK

(Output)

T2

T3

T6

MSB

T7

TXD

(Output)

LSB

T8

T9

RXD

(Input)

MSB

Figure 11: AC characteristics of digital audio interface in PCM mode (<I2S_mode> = 0), Master mode

WA

(Output)

T4

T5

T1

CLK

(Output)

T6

MSB

T7

T2

T9

T3

TXD

(Output)

LSB

T8

RXD

(Input)

MSB

Figure 12: AC characteristics of digital audio interface in PCM mode (<I2S_mode> = 1), Master mode

Parameter Description

T1

I²S clock period

Min.

Typ.

Max.

Unit Remarks

6.940

7.349

5.035

5.331

4.626

4.898

3.468

3.672

2.516

2.664

2.311

6.944

7.353

5.039

5.335

4.630

4.902

3.472

3.676

2.520

2.668

2.315

2.451

µs

<I2S_mode>=0, <I2S_sample_rate>=0

<I2S_mode>=1, <I2S_sample_rate>=0

<I2S_mode>=0, <I2S_sample_rate>=1

<I2S_mode>=1, <I2S_sample_rate>=1

<I2S_mode>=0, <I2S_sample_rate>=2

<I2S_mode>=1, <I2S_sample_rate>=2

<I2S_mode>=0, <I2S_sample_rate>=3

<I2S_mode>=1, <I2S_sample_rate>=3

<I2S_mode>=0, <I2S_sample_rate>=4

<I2S_mode>=1, <I2S_sample_rate>=4

<I2S_mode>=0, <I2S_sample_rate>=5

<I2S_mode>=1, <I2S_sample_rate>=5

2.447

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Electrical specifications

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SARA-U2 series - Data Sheet

Parameter Description

Min.

Typ.

Max.

Unit Remarks

1.732

1.834

1.256

1.330

1.153

1.221

1.736

1.838

1.260

1.334

1.157

µs

<I2S_mode>=0, <I2S_sample_rate>=6

<I2S_mode>=1, <I2S_sample_rate>=6

<I2S_mode>=0, <I2S_sample_rate>=7

<I2S_mode>=1, <I2S_sample_rate>=7

<I2S_mode>=0, <I2S_sample_rate>=8

<I2S_mode>=1, <I2S_sample_rate>=8

<I2S_mode>=0, <I2S_sample_rate>=0

<I2S_mode>=1, <I2S_sample_rate>=0

<I2S_mode>=0, <I2S_sample_rate>=1

<I2S_mode>=1, <I2S_sample_rate>=1

<I2S_mode>=0, <I2S_sample_rate>=2

<I2S_mode>=1, <I2S_sample_rate>=2

<I2S_mode>=0, <I2S_sample_rate>=3

<I2S_mode>=1, <I2S_sample_rate>=3

<I2S_mode>=0, <I2S_sample_rate>=4

<I2S_mode>=1, <I2S_sample_rate>=4

<I2S_mode>=0, <I2S_sample_rate>=5

<I2S_mode>=1, <I2S_sample_rate>=5

<I2S_mode>=0, <I2S_sample_rate>=6

<I2S_mode>=1, <I2S_sample_rate>=6

<I2S_mode>=0, <I2S_sample_rate>=7

<I2S_mode>=1, <I2S_sample_rate>=7

<I2S_mode>=0, <I2S_sample_rate>=8

<I2S_mode>=1, <I2S_sample_rate>=8

<I2S_mode>=0, <I2S_sample_rate>=0

<I2S_mode>=1, <I2S_sample_rate>=0

<I2S_mode>=0, <I2S_sample_rate>=1

<I2S_mode>=1, <I2S_sample_rate>=1

<I2S_mode>=0, <I2S_sample_rate>=2

<I2S_mode>=1, <I2S_sample_rate>=2

<I2S_mode>=0, <I2S_sample_rate>=3

<I2S_mode>=1, <I2S_sample_rate>=3

<I2S_mode>=0, <I2S_sample_rate>=4

<I2S_mode>=1, <I2S_sample_rate>=4

<I2S_mode>=0, <I2S_sample_rate>=5

<I2S_mode>=1, <I2S_sample_rate>=5

<I2S_mode>=0, <I2S_sample_rate>=6

<I2S_mode>=1, <I2S_sample_rate>=6

<I2S_mode>=0, <I2S_sample_rate>=7

<I2S_mode>=1, <I2S_sample_rate>=7

<I2S_mode>=0, <I2S_sample_rate>=8

<I2S_mode>=1, <I2S_sample_rate>=8

µs

1.225

144.0

136.0

198.5

187.4

216.0

204.0

288.0

272.0

396.9

374.9

432.0

408.0

576.0

544.0

793.8

749.7

864.0

816.0

3.472

3.676

2.520

2.668

2.315

2.451

1.736

1.838

1.260

1.334

1.157

µs

1/T1

I²S clock frequency

144.1

kHz

µs

136.1

198.6

187.6

216.2

204.2

288.3

272.3

397.5

375.4

432.7

408.7

577.3

545.2

796.3

752.0

867.0

818.7

T2

I²S clock low time

3.452

3.656

2.500

2.648

2.295

2.431

1.716

µs

1.818

µs

1.240

1.314

µs

1.137

µs

1.205

0.848

0.899

0.610

0.647

0.559

0.593

1.225

0.868

0.919

0.630

0.667

0.579

0.613

µs

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SARA-U2 series - Data Sheet

Parameter Description

Min.

Typ.

Max.

Unit Remarks

T3

I²S clock high time

3.452

3.656

2.500

2.648

2.295

2.431

1.716

3.472

3.676

2.520

2.668

2.315

2.451

1.736

1.838

1.260

1.334

1.157

µs

<I2S_mode>=0, <I2S_sample_rate>=0

<I2S_mode>=1, <I2S_sample_rate>=0

<I2S_mode>=0, <I2S_sample_rate>=1

<I2S_mode>=1, <I2S_sample_rate>=1

<I2S_mode>=0, <I2S_sample_rate>=2

<I2S_mode>=1, <I2S_sample_rate>=2

<I2S_mode>=0, <I2S_sample_rate>=3

<I2S_mode>=1, <I2S_sample_rate>=3

<I2S_mode>=0, <I2S_sample_rate>=4

<I2S_mode>=1, <I2S_sample_rate>=4

<I2S_mode>=0, <I2S_sample_rate>=5

<I2S_mode>=1, <I2S_sample_rate>=5

<I2S_mode>=0, <I2S_sample_rate>=6

<I2S_mode>=1, <I2S_sample_rate>=6

<I2S_mode>=0, <I2S_sample_rate>=7

<I2S_mode>=1, <I2S_sample_rate>=7

<I2S_mode>=0, <I2S_sample_rate>=8

<I2S_mode>=1, <I2S_sample_rate>=8

<I2S_sample_rate>=0

µs

1.818

µs

1.240

1.314

µs

1.137

µs

1.205

0.848

0.899

0.610

0.647

0.559

0.593

1.225

0.868

0.919

0.630

0.667

0.579

0.613

125.0

90.70

83.33

62.50

45.35

41.67

31.25

22.68

20.83

8.000

11.03

µs

I²S word alignment period

µs

<I2S_sample_rate>=1

µs

<I2S_sample_rate>=2

µs

<I2S_sample_rate>=3

µs

<I2S_sample_rate>=4

µs

<I2S_sample_rate>=5

µs

<I2S_sample_rate>=6

µs

<I2S_sample_rate>=7

µs

<I2S_sample_rate>=8

I²S word alignment frequency

kHz

ns

<I2S_sample_rate>=0

<I2S_sample_rate>=1

12.00

16.00

22.05

24.00

32.00

44.10

48.00

<I2S_sample_rate>=2

<I2S_sample_rate>=3

<I2S_sample_rate>=4

<I2S_sample_rate>=5

<I2S_sample_rate>=6

<I2S_sample_rate>=7

<I2S_sample_rate>=8

T4

T5

T6

T7

T8

I²S CLK high begin to WA high begin -24

32

24

22

<I2S_mode> = 0

I²S CLK low end to IWA high end

I²S TXD invalid before CLK low end

I²S TXD valid after CLK high begin

I²S RXD setup time before CLK high 60

end

-24

<I2S_mode> = 0

T9

I²S RXD hold time after CLK low

begin

12

ns

<I2S_mode> = 0

Table 22: AC characteristics of digital audio interface in PCM mode (<I2S_mode> = 0,1), Master mode

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PCM mode – Slave mode

WA

(Input)

T4

T5

T1

T7

CLK

(Input)

T6

MSB

TXD

LSB

(Output)

T8

T9

RXD

LSB

(Input)

MSB

Figure 13: AC characteristics of digital audio interface in PCM mode (<I2S_mode> = 0), Slave mode

WA

(Input)

T4

T5

T1

CLK

(Input)

T6

MSB

T7

TXD

(Output)

LSB

T8

T9

RXD

(Input)

MSB

Figure 14: AC characteristics of digital audio interface in PCM mode (<I2S_mode> = 1), Slave mode

Parameter Description

Min.

Typ.

Max.

Unit Remarks

T1

I²S clock period

6.944

7.353

5.039

5.335

4.630

4.902

3.472

3.676

2.520

2.668

2.315

2.451

1.736

1.838

1.260

1.334

1.157

µs

<I2S_mode>=0, <I2S_sample_rate>=0

µs

<I2S_mode>=1, <I2S_sample_rate>=0

<I2S_mode>=0, <I2S_sample_rate>=1

<I2S_mode>=1, <I2S_sample_rate>=1

<I2S_mode>=0, <I2S_sample_rate>=2

<I2S_mode>=1, <I2S_sample_rate>=2

<I2S_mode>=0, <I2S_sample_rate>=3

<I2S_mode>=1, <I2S_sample_rate>=3

<I2S_mode>=0, <I2S_sample_rate>=4

<I2S_mode>=1, <I2S_sample_rate>=4

<I2S_mode>=0, <I2S_sample_rate>=5

<I2S_mode>=1, <I2S_sample_rate>=5

<I2S_mode>=0, <I2S_sample_rate>=6

<I2S_mode>=1, <I2S_sample_rate>=6

<I2S_mode>=0, <I2S_sample_rate>=7

<I2S_mode>=1, <I2S_sample_rate>=7

<I2S_mode>=0, <I2S_sample_rate>=8

<I2S_mode>=1, <I2S_sample_rate>=8

<I2S_mode>=0, <I2S_sample_rate>=0

<I2S_mode>=1, <I2S_sample_rate>=0

<I2S_mode>=0, <I2S_sample_rate>=1

<I2S_mode>=1, <I2S_sample_rate>=1

<I2S_mode>=0, <I2S_sample_rate>=2

µs

1.225

144.0

136.0

198.5

187.4

216.0

µs

1/T1

I²S clock frequency

kHz

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Parameter Description

Min.

Typ.

Max.

Unit Remarks

204.0

288.0

272.0

396.9

374.9

432.0

408.0

576.0

544.0

793.8

749.7

864.0

816.0

kHz

µs

<I2S_mode>=1, <I2S_sample_rate>=2

<I2S_mode>=0, <I2S_sample_rate>=3

<I2S_mode>=1, <I2S_sample_rate>=3

<I2S_mode>=0, <I2S_sample_rate>=4

<I2S_mode>=1, <I2S_sample_rate>=4

<I2S_mode>=0, <I2S_sample_rate>=5

<I2S_mode>=1, <I2S_sample_rate>=5

<I2S_mode>=0, <I2S_sample_rate>=6

<I2S_mode>=1, <I2S_sample_rate>=6

<I2S_mode>=0, <I2S_sample_rate>=7

<I2S_mode>=1, <I2S_sample_rate>=7

<I2S_mode>=0, <I2S_sample_rate>=8

<I2S_mode>=1, <I2S_sample_rate>=8

<I2S_sample_rate>=0

I²S word alignment period

125.0

90.70

83.33

62.50

45.35

41.67

31.25

22.68

20.83

8.000

11.03

µs

<I2S_sample_rate>=1

µs

<I2S_sample_rate>=2

µs

<I2S_sample_rate>=3

µs

<I2S_sample_rate>=4

µs

<I2S_sample_rate>=5

µs

<I2S_sample_rate>=6

µs

<I2S_sample_rate>=7

µs

<I2S_sample_rate>=8

I²S word alignment frequency

kHz

ns

<I2S_sample_rate>=0

<I2S_sample_rate>=1

12.00

16.00

22.05

24.00

32.00

44.10

48.00

<I2S_sample_rate>=2

<I2S_sample_rate>=3

<I2S_sample_rate>=4

<I2S_sample_rate>=5

<I2S_sample_rate>=6

<I2S_sample_rate>=7

<I2S_sample_rate>=8

T4

T5

T6

T7

T8

T9

I²S WA high begin before I²S CLK low

begin (latching edge of I²S CLK)

I²S WA low begin before I²S CLK low

begin (latching edge of I²S CLK)

I²S TXD invalid before I²S CLK rising

edge (shifting edge of I²S CLK)

I²S TXD valid after I²S CLK rising edge

(shifting edge of I²S CLK)

36

<I2S_mode>= 0

ns

<I2S_mode>= 0

12

79

I²S RXD setup time before I²S CLK falling22

edge (latching edge of I²S CLK)

I²S RXD hold time after I²S CLK falling 24

edge (latching edge of I²S CLK)

Table 23: AC characteristics of digital audio interface in PCM mode (<I2S_mode> = 0,1), Slave mode

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4.2.9.2 AC characteristics of Digital Clock Output pin

T1

CODEC_CLK

(Output)

T2

T3

Figure 15: AC characteristics of CODEC_CLK digital clock output

Parameter Description

Min. Typ.

Max. Unit

Remarks

T1

CODEC_CLK clock period

38

ns

CODEC_CLK output set to 26 MHz

CODEC_CLK output set to 13 MHz

CODEC_CLK output set to 26 MHz

CODEC_CLK output set to 13 MHz

CODEC_CLK output set to 26 MHz

CODEC_CLK output set to 13 MHz

CODEC_CLK output set to 26 MHz

CODEC_CLK output set to 13 MHz

77

ns

1/T1

T2

T3

CODEC_CLK clock frequency

CODEC_CLK clock low time

CODEC_CLK clock high time

26

MHz

ns

13

10

26

10

26

ns

Table 24: AC characteristics of CODEC_CLK digital clock output

4.2.10 USB pins

USB data lines (USB_D+ and USB_D-) are compliant to the USB 2.0 high-speed specification. See the

Universal Serial Bus Revision 2.0 specification [15] for detailed electrical characteristics. The values

in Table 25 related to USB 2.0 high-speed physical layer specifications are for information only.

Parameter

Min.

Typ. Max.

Unit

Remarks

USB detection voltage on pin VUSB_DET

Current sink at VUSB_DET

4.40

5.00 5.25

V

30

µA

mV

High-speed squelch detection threshold (input

differential signal amplitude)

100

525

150

High speed disconnect detection threshold (input

differential signal amplitude)

625

500

mV

High-speed data signaling input common mode voltage -50

range

High-speed idle output level

-10

10

mV

High-speed data signaling output high level

High-speed data signaling output low level

Chirp J level (output differential voltage)

Chirp K level (output differential voltage)

360

-10

440

10

700

-900

1100

-500

Table 25: USB pins characteristics

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4.2.11 DDC (I²C) pins

DDC (I²C) lines (SCL and SDA) are compliant to the I²C-bus standard mode specification. See the

I²C-bus Specifications [12] for detailed electrical characteristics. The values in Table 26 related to

I²C-bus standard mode specifications are for information only.

Parameter

Min.

Typ.

Max.

Unit

Remarks

Internal supply for DDC domain 1.73

1.80

1.87

0.35

1.93

0.35

0.7

V

Generic Digital Interfaces supply (V_INT)

L-level input

-0.20

1.31

V

H-level input

V

L-level output

0.00

100

V

Max value at I_OL= +1.0 mA

0.2 V < V_IN< 1.93 V

Input/Output leakage current

Clock frequency on SCL

µA

kHz

Table 26: DDC (I²C) pin characteristics (DDC domain)

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5 Mechanical specifications

K

M1

M2

K

Pin 1

Indicator

P

F

Q

R

E

L

N

L

R

G

H1

J1

B

J2

H2

ANT pin

O

H2

J2

O

G

E

I

F

D

H1

A

J1

D

C

Figure 16: SARA-U2 series module dimensions (bottom and side views)

Parameter

Description

Typical

Tolerance

A

Module Height [mm]

26.0

16.0

3.0

2.0

2.5

1.05

1.1

(1023.6 mil)

(629.9 mil)

(118.4 mil)

(78.7 mil)

(98.4 mil)

(41.3 mil)

(43.3 mil)

(31.5 mil)

(35.4 mil)

(59.1 mil)

(11.8 mil)

+0.20/-0.20 (+7.9/-7.9 mil)

+0.25/-0.15 (+9.8/-5.9 mil)

+0.20/-0.20 (+7.9/-7.9 mil)

+0.02/-0.02 (+0.8/-0.8 mil)

+0.20/-0.20 (+7.9/-7.9 mil)

+0.02/-0.02 (+0.8/-0.8 mil)

+0.20/-0.20 (+7.9/-7.9 mil)

+0.02/-0.02 (+0.8/-0.8 mil)

B

Module Width [mm]

C

Module Thickness [mm]

D

Horizontal Edge to Lateral Pin Pitch [mm]

Vertical Edge to Lateral Pin Pitch [mm]

Edge to Lateral Pin Pitch [mm]

E

F

G

Lateral Pin to Pin Pitch [mm]

H1

Lateral Pin Height [mm]

0.8

0.9

1.5

H2

Lateral Pin close to ANT Height [mm]

Lateral Pin Width [mm]

I

J1

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 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]

0.3

0.2

2.75

1.8

J2

(7.9 mil)

K

(108.3 mil)

(70.9 mil)

(141.7 mil)

(82.7 mil)

(43.3 mil)

(35.4 mil)

(39.4 mil)

(23.6 mil)

L

M1

M2

3.6

2.1

N

O

1.1

P

0.9

1.0

Q

R

0.6

< 3

Weight

Table 27: SARA-U2 series module dimensions

☞

Module height tolerance +/–0.20 mm may be exceeded close to the corners of the PCB due to the

cutting process: in the worst case, the height could be +0.40 mm longer than the typical value.

For information regarding Footprint and Paste Mask recommended for the application board, see

the SARA-G3 and SARA-U2 series System Integration Manual [6].

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SARA-U2 series - Data Sheet

6 Reliability tests and approvals

6.1 Reliability tests

Tests for product family qualifications are according to ISO 16750 “Road vehicles - Environmental

conditions and testing for electrical and electronic equipment“, and appropriate standards.

6.2 Approvals

6.2.1 SARA-U2 series

SARA-U2 series modules comply with the Directive 2011/65/EU of the European Parliament and the

Council on the Restriction of Use of certain Hazardous Substances in Electrical and Electronic

Equipment (EU RoHS 2) and its amendment Directive (EU) 2015/863 (EU RoHS 3).

SARA-U2 series modules are RoHS 3 compliant.

No natural rubbers, hygroscopic materials, or materials containing asbestos are employed

Table 28 lists the SARA-U2 series main regulatory and mobile network operators’ approvals.

Certification Scheme

SARA-U201

ATEX

SARA-U260 SARA-U270 SARA-U270 SARA-U280

ATEX

CE (European Conformity)

•

FCC (United States Certification)

FCC identification number

•

XPY1CGM5NNN

XPYSARAU260

XPYSARAU280

ISED (Canadian Certification)

ISED certification number

•

8595A-1CGM5NNN 8595A-1CGM5NNN 8595A-SARAU260

8595A-SARAU280

ANATEL (Brazilian Certification)

ICASA (South African Certification)

IFT (Mexican Certification)

•

RCM (Australian Certification)

Giteki (Japanese Certification)

KCC (Korean Certification)

•

NCC (Taiwan Certification)

•

CCC (China Compulsory Certification)

AT&T (US Network Operator)

Rogers (Network Operator)

•

Telefonica (Network Operator)

Vodafone (Network Operator)

Vivo (Network Operator)

•

KT (Korean Network Operator)

SKT (Korean Network Operator)

NTT DoCoMo (Network Operator)

ATEX (ATmospheric EXplosives)

•

Table 28: SARA-U2 series main regulatory and mobile network operators’ approvals

☞

The above listed certifications might not be available for all the different ordering numbers. Please

contact the u-blox office or sales representative nearest you for the complete list of certification

approvals available for the selected ordering number.

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SARA-U2 series - Data Sheet

6.2.2 SARA-U201 ATEX and SARA-U270 ATEX

SARA-U201 ATEX and SARA-U270 ATEX modules are certified as components intended for use in

potentially explosive atmospheres compliant to the following standards:



IEC 60079-0

IEC 60079-11

IEC 60079-26

The certification numbers of the modules according to the ATEX directive 2014/34/EU are:



SARA-U201 ATEX: SIQ 16 ATEX 298 U

SARA-U270 ATEX: SIQ 15 ATEX 017 U

The certification numbers of the modules according to the IECEx conformity assessment system are:



SARA-U201 ATEX: IECEx SIQ 16.0006U

SARA-U270 ATEX: IECEx SIQ 15.0001U

According to the standards listed above, the modules are certified with the following marking:



SARA-U201 ATEX: Ex II 1G, Ex ia IIB

SARA-U270 ATEX: Ex II 1G, Ex ia IIC/IIB

According to the marking stated above, the modules are certified as electrical equipment of:



group ‘II’: intended for use in areas with explosive gas atmosphere other than mines susceptible

to firedamp



category ‘1G’: intended for use in zone 0 hazardous areas, in which explosive atmospheres caused

by mixtures of air and gases, vapors or mists are present continuously, for long periods or

frequently



level of protection ‘ia’: intrinsically safe apparatus with very high level of protection, not capable of

causing ignition in normal operation and with the application of one countable fault or a

combination of any two countable fault plus those non-countable faults which give the most

onerous condition

subdivision ‘IIB’: intended for use in areas where the nature of the explosive gas atmosphere is

considered dangerous based on the Maximum Experimental Safe Gap or the Minimum Ignition

Current ratio of the explosive gas atmosphere in which the equipment may be installed (a typical

gas is ethylene), so that the modules are also suitable for applications intended for use in

subdivision IIA (a typical gas is propane)



subdivision ‘IIC/IIB’: intended for use in areas where the nature of the explosive gas atmosphere is

considered very dangerous based on the Maximum Experimental Safe Gap or the Minimum

Ignition Current ratio of the explosive gas atmosphere in which the equipment may be installed (a

typical gas is hydrogen), so that the modules are also suitable for applications intended for use in

subdivision IIB (typical gas is ethylene) and subdivision IIA (a typical gas is propane)

Section 4.2.1 defines the temperature range of use for SARA-U201 ATEX and SARA-U270 ATEX

modules.

The RF radiating profile of the modules is compliant to all the applicable 3GPP / ETSI standards, with

a maximum of 2 W RF pulse power (corresponding to 1.15 mJ RF pulse energy) and with a maximum

average power of 250 mW according to the GSM/GPRS and WCDMA power class stated in Table 2.

Section 9.1 describes the nameplate of the SARA-U201 ATEX and the SARA-U270 ATEX modules (see

Figure 21 and Figure 22).

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SARA-U2 series - Data Sheet

The following maximum input and equivalent parameters must be considered in sub-division IIC:

SARA-U270 ATEX

Ui

Ii

3.8 V

1.6 A (burst)

132 µF

Ci

Li

9.8 µH

The following maximum input and equivalent parameters must be considered in sub-divisions IIB, IIA

(two different configurations are allowed for SARA-U201 ATEX):

SARA-U201 ATEX

SARA-U270 ATEX

4.2

Ui

Ii

3.8

4.2

1.6 A (burst)

169 µF

2.5 A (burst)

169 µF

2.5 A (burst)

132 µF

Ci

Li

9.4 µH

9.8 µH

☞

For more information about the integration of the SARA-U201 ATEX and the SARA-U270 ATEX

modules in applications intended for use in potentially explosive atmospheres, see the SARA-G3 /

SARA-U2 Series System Integration Manual [6].

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SARA-U2 series - Data Sheet

7 Product handling & soldering

7.1 Packaging

SARA-U2 modules are delivered as hermetically sealed, reeled tapes to enable efficient production,

production lot set-up and tear-down. For more information about packaging, see the u-blox Package

Information Guide [16].

Figure 17: Reeled SARA-U2 modules

7.1.1 Reels

SARA-U2 modules are deliverable in quantities of 250 pieces on a reel. SARA-U2 modules are delivered

using reel type B2 as described in the u-blox Package Information Guide [16].

Parameter

Specification

Reel type

B2

Delivery quantity

250

Table 29: Reel information for SARA-U2 modules

☞

Quantities of less than 250 pieces are also available. Contact u-blox for more information.

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SARA-U2 series - Data Sheet

7.1.2 Tapes

Figure 18 shows the position and the orientation of SARA-U2 series modules as they are delivered on

the tape, while Figure 19 and Table 30 specify the tape dimensions.

Sprocket hole

Pin 1

Feed direction

Figure 18: Orientation for SARA-U2 series modules on tape

Figure 19: SARA-U2 series tape dimensions (mm)

Parameter

Typical value

Tolerance

Unit

A₀

B₀

K₀

16.8

26.8

3.2

0.2

mm

Table 30: SARA-U2 series tape dimensions (mm)

☞

Note 1: 10 sprocket hole pitch cumulative tolerance ± 0.2 mm.

Note 2: pocket position relative to sprocket hole is measured as true position of pocket, not pocket

hole.

☞

Note 3: A₀and B₀are calculated on a plane at a distance “R” above the bottom of the pocket.

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SARA-U2 series - Data Sheet

7.2 Moisture Sensitivity Levels

⚠

SARA-U2 modules are Moisture Sensitive Devices (MSD) in accordance to the IPC/JEDEC

specification.

The Moisture Sensitivity Level (MSL) relates to the packaging and handling precautions required.

SARA-U2 modules are rated at MSL level 4. For more information regarding moisture sensitivity

levels, labeling, storage and drying, see the u-blox Package Information Guide [16].

☞

For the MSL standard, see IPC/JEDEC J-STD-020 (can be downloaded from www.jedec.org).

7.3 Reflow soldering

Reflow profiles are to be selected according to u-blox recommendations (see the SARA-G3 and

SARA-U2 series System Integration Manual [6]).

⚠

Failure to observe these recommendations can result in severe damage to the device!

7.4 ESD precautions

SARA-U2 modules contain highly sensitive electronic circuitry and are Electrostatic Sensitive

Devices (ESD). Handling SARA-U2 modules without proper ESD protection may destroy or damage

them permanently.

SARA-U2 modules are Electrostatic Sensitive Devices (ESD) and require special ESD precautions

typically applied to ESD sensitive components.

Table 8 details the maximum ESD ratings of the SARA-U2 module.

Proper ESD handling and packaging procedures must be applied throughout the processing, handling

and operation of any application that incorporates the SARA-U2 module.

ESD precautions should be implemented on the application board where the module is mounted, as

described in the SARA-G3 and SARA-U2 series System Integration Manual [6].

⚠

Failure to observe these precautions can result in severe damage to the device!

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8 Default settings

Interface

AT settings

Comments

UART interface

Enabled

Multiplexing mode can be enabled by AT+CMUX command providing following

channels:



Channel 0: control channel

Channel 1 – 5: AT commands / data connection

Channel 6: GNSS tunneling

Channel 7: SAP (SIM Access Profile)

AT+IPR=0

One-shot automatic baud rate detection enabled

Frame format: 8 bits, no parity, 1 stop bit

AT+ICF=3,1

☞

Where AT+IPR=0 is the default value, the AT+ICF value in the profile is not

applied (AT+IPR=0 overrules the AT+ICF setting) and the one-shot

automatic frame detection is active.

AT&K3

AT&S1

AT&D1

HW flow control enabled

DSR line set ON in data mode and set OFF in command mode

Upon an ON-to-OFF transition of DTR, the module enters online command state

and issues an OK result code

AT&C1

Circuit 109 changes in accordance with the Carrier detect status; ON if the

Carrier is detected, OFF otherwise

AUX UART interface

USB interface

Disabled

AT command interface is disabled by default on the AUX UART physical

interface, and it can be configured by AT+USIO command (see the u-blox AT

Commands Manual [4])

Enabled

7 USB CDCs (Communications Device Class) by default available:



USB1: AT and data

USB2: AT and data

USB3: AT and data

USB4: GNSS tunneling

USB5: Primary Log (diagnostic purpose)

USB6: Secondary Log (diagnostic purpose)

USB7: SAP (SIM Access Profile)

AT&K3

AT&S1

AT&D1

HW flow control enabled

DSR line set ON in data mode and set OFF in command mode

Upon an ON-to-OFF transition of DTR, the module enters online command state

and issues an OK result code

AT&C1

Circuit 109 changes in accordance with the Carrier detect status; ON if the

Carrier is detected, OFF otherwise

Power saving

AT+UPSV=0

AT+COPS=0

Disabled

Network registration

Self network registration

Table 31: SARA-U2 series default settings

See the u-blox AT Commands Manual [4] and the SARA-G3 and SARA-U2 series System Integration

Manual [6] for information about further settings.

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Default settings

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SARA-U2 series - Data Sheet

9 Labeling and ordering information

9.1 Product labeling

The labels of SARA-U2 series modules include important product information as described in this

section.

Figure 20 illustrates the label of all the SARA-U2 series modules except for SARA-U201 ATEX and

SARA-U270 ATEX, and includes: u-blox logo, production lot, Pb-free marking, product Type Number,

IMEI number, certification info and production country.

xxx-xx

SARA-U2xx

Figure 20: SARA-U2 series modules label

Figure 21 and Figure 22 illustrate the label of SARA-U201 ATEX and SARA-U270 ATEX modules

respectively; these include: u-blox logo, production lot, Pb-free marking, product Type Number, IMEI

number, ATEX marking with the IECEx and ATEX certificate numbers and category classification.

03X-00

SARA-U201

IECEx SIQ 16.0006U

SIQ 16 ATEX 298 U

II 1G, Ex ia IIB

1304

Figure 21: SARA-U201 ATEX modules label

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Labeling and ordering information

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SARA-U2 series - Data Sheet

00X-00

SARA-U270

IECEx SIQ 15.0001U

SIQ 15 ATEX 017 U

II 1G Ex ia IIC/IIB

1304

Figure 22: SARA-U270 ATEX modules label

☞

For more information about the certification approvals and for all the certificates of compliancy of

all the SARA-U2 series modules product versions, see our website (www.u-blox.com) or contact

the u-blox office or sales representative nearest you.

9.2 Explanation of codes

Three different product code formats are used. The Product Name is used in documentation such as

this data sheet and identifies all the u-blox products, independent of packaging and quality grade. The

Ordering Code includes options and quality, while the Type Number includes the hardware and

firmware versions. Table 32 details these 3 different formats:

Format

Structure

Product Name

Ordering Code

Type Number

SARA-TGVV

SARA-TGVV-TTQ

SARA-TGVV-TTQ-XX

Table 32: Product code formats

Table 33 explains the parts of the product code.

Code

Meaning

Example

PPP(P)

TG

Form factor (3 or 4 digit, typically 4 for cellular products)

Platform (Technology and Generation)

SARA

U2



Dominant technology: G: GSM/GPRS; U: UMTS/HSPA; C: CDMA 1xRTT; N: NB-IoT;

R: LTE low data rate (Cat 1 and below); L: LTE high data rate (Cat 3 and above)



Generation: 1…9

VV

TT

Q

Variant function set based on the same platform [00…99]

Major product version [00…99]

00

S

Quality grade/production site



A = automotive

B = professional

S = professional

X = ATEX

XX

Minor product version (not relevant for certification)

Default value is 00

Table 33: Part identification code

UBX-13005287 - R20

Labeling and ordering information

Page 54 of 61

SARA-U2 series - Data Sheet

9.3 Ordering information

Ordering No.

Product

SARA-U201-03B

3G 800/850/900/1900/2100 MHz and 2G 850/900/1800/1900 MHz bands for worldwide use,

26.0 x 16.0 x 3.0 mm, 250 pcs/reel

SARA-U201-63B

SARA-U201-03X

3G 800/850/900/1900/2100 MHz and 2G 850/900/1800/1900 MHz bands for worldwide use,

approved by NTT DoCoMo Japanese network operator

26.0 x 16.0 x 3.0 mm, 250 pcs/reel

3G 800/850/900/1900/2100 MHz and 2G 850/900/1800/1900 MHz bands for worldwide use,

ATEX certified

26.0 x 16.0 x 3.0 mm, 250 pcs/reel

SARA-U201-04B

SARA-U201-04X

3G 800/850/900/1900/2100 MHz and 2G 850/900/1800/1900 MHz bands for worldwide use,

26.0 x 16.0 x 3.0 mm, 250 pcs/reel

3G 800/850/900/1900/2100 MHz and 2G 850/900/1800/1900 MHz bands for worldwide use,

ATEX certified,

26.0 x 16.0 x 3.0 mm, 250 pcs/reel

SARA-U260-00S

SARA-U260-03S

SARA-U270-00S

SARA-U270-00X

3G 850/1900 MHz and 2G 850/1900 MHz bands for America,

26.0 x 16.0 x 3.0 mm, 250 pcs/reel

3G 850/1900 MHz and 2G 850/1900 MHz bands for America,

26.0 x 16.0 x 3.0 mm, 250 pcs/reel

3G 900/2100 MHz and 2G 900/1800 MHz bands for Europe, Asia and other countries,

26.0 x 16.0 x 3.0 mm, 250 pcs/reel

3G 900/2100 MHz and 2G 900/1800 MHz bands for Europe, Asia and other countries,

ATEX certified,

26.0 x 16.0 x 3.0 mm, 250 pcs/reel

SARA-U270-03S

SARA-U270-53S

SARA-U270-73S

SARA-U270-04B

SARA-U280-00S

SARA-U280-03S

3G 900/2100 MHz and 2G 900/1800 MHz bands for Europe, Asia and other countries,

26.0 x 16.0 x 3.0 mm, 250 pcs/reel

3G 900/2100 MHz bands, approved by KT Korean network operator,

26.0 x 16.0 x 3.0 mm, 250 pcs/reel

3G 900/2100 MHz bands, approved by SKT Korean network operator,

26.0 x 16.0 x 3.0 mm, 250 pcs/reel

3G 900/2100 MHz and 2G 900/1800 MHz bands for Europe, Asia and other countries,

26.0 x 16.0 x 3.0 mm, 250 pcs/reel

3G 850/1900 MHz bands for America,

26.0 x 16.0 x 3.0 mm, 250 pcs/reel

3G 850/1900 MHz bands for America,

26.0 x 16.0 x 3.0 mm, 250 pcs/reel

Table 34: Product ordering codes

UBX-13005287 - R20

Labeling and ordering information

Page 55 of 61

SARA-U2 series - Data Sheet

Appendix

A Glossary

Abbreviation

Definition

ACM

ADC

AP

Application Communication Module

Analog to Digital Converter

Application Processor

APN

ATEX

BER

Access Point Name

EU Explosive Atmosphere Directive

Bit Error Rate

BIP

Bearer Independent Protocol

Cell Broadcast Services

CBS

CDC

CDMA

CE

Communication Device Class

Code-Division Multiple Access

Certification Mark for EHS compliance in the European Economic Area

Clock

CLK

CMOS

CNAP

CS

Complementary Metal-Oxide-Semiconductor

Calling Name Presentation

Chip Select

CTS

Clear To Send

DCD

DCE

DCS

DDC

DL

Data Carrier Detect

Data Communication Equipment

Digital Cellular System

Display Data Channel

Down Link (Reception)

DRX

Discontinuous Reception

DSR

DTE

Data Set Ready

Data Terminal Equipment

DTMF

DTR

EDGE

EGPRS

ERS

Dual Tone Multi Frequency

Data Terminal Ready

Enhanced Data rates for GSM Evolution

Enhanced General Packet Radio Service

Equivalent Series Resistance

Electrostatic Discharge

ESD

ETSI

EU

European Telecommunications Standards Institute

European Union

FCC

Federal Communications Commission

Frequency Division Duplex

Firmware (update) Over AT commands

Firmware (update) Over-The-Air

File Transfer Protocol

FDD

FOAT

FOTA

FTP

FW

Firmware

GCF

Global Certification Forum

Generic Digital Interface

GDI

GERA

GLONASS

GMSK

GNSS

GPIO

GPRS

GPS

GSM EGPRS Radio Access

GLObal Navigation Satellite System (Russian)

Gaussian Minimum-Shift Keying modulation

Global Navigation Satellite System

General Purpose Input/Output

General Packet Radio Services

Global Positioning System

Global System for Mobile communications

GSM

UBX-13005287 - R20

Appendix

Page 56 of 61

SARA-U2 series - Data Sheet

Abbreviation

Definition

GSMA

HDLC

HSDPA

HSPA

HSUPA

HTTP

HW

GSM (Groupe Spéciale Mobile) Association

High-level Data Link Control

High Speed Downlink Packet Access

High Speed Packet Access

High Speed Uplink Packet Access

HyperText Transfer Protocol

Hardware

I/O

Input/Output

I²C

Inter-Integrated Circuit

I²S

Inter-IC Sound

IC

Integrated Circuit

IEC

International Electrotechnical Commission

International Mobile Equipment Identity

IMEI

ISED

ISO

Innovation, Science and Economic Development (Canadian government)

International Organization for Standardization

International Telecommunications Union

LoCation Services (protocol)

Land Grid Array

ITU

LCS

LGA

LTE

Long-Term Evolution

M2M

ME

Machine to Machine

Mobile Equipment

MS

Mobile Station* / Microsoft*

Moisture Sensitive Device

Moisture Sensitivity Level

Multiplexer

MSD

MSL

MUX

NITZ

NOM

OSI

Network Identification and Time Zone

Network Operating Mode

Open Systems Interconnection

Printed Circuit Board

PCB

PCM

PCN

PD

Pulse Code Modulation

Product Change Notification

Pull-Down

PDU

PLMN

PMU

PPP

PPS

PSAP

PTCRB

PU

Protocol Data Unit

Public Land Mobile Network

Power Management Unit

Point-to-Point Protocol

Protocol and Parameter Selection

Public Safety Answering Point

PCS Type Certification Review Board

Pull-Up

PU/PD

RAM

RF

Pull-Up/Pull-Down

Random Access Memory

Radio Frequency

RI

Ring Indicator

RIL

Radio Interface Layer

RMAC

RMC

RRC

RRLP

RTC

RTS

RX

Remote Monitoring Automation and Control

Reference Measurement Channel

Radio Resource Control

Radio Resource LCS Protocol

Real Time Counter / Real Time Clock

Request To Send

Receive Signal

SAP

SIM Access Profile

UBX-13005287 - R20

Appendix

Page 57 of 61

SARA-U2 series - Data Sheet

Abbreviation

Definition

SCL

Serial Clock

SDA

SIM

Serial Data

Subscriber Identity Module

Serving Mobile Location Centre

Short Message Service

SMLC

SMS

SSL

Secure Sockets Layer

TCP

Transmission Control Protocol

Time-Division Multiple Access

Transport Layer Security

Technical Specification

TDMA

TLS

TS

TXD

Transmit Data

UART

UDP

UE

Universal Asynchronous Receiver/Transmitter

User Datagram Protocol

User Equipment

UL

Uplink (Transmission)

UMTS

URC

USB

USSD

UTC

VCC

VSWR

WA

Universal Mobile Telecommunications System

Unsolicited Result Code

Universal Serial Bus

Unstructured Supplementary Services Data

Coordinated Universal Time

Voltage Collector Collector

Voltage Standing Wave Ratio

Word Alignment

WCDMA

Wideband Code-Division Multiple Access

Table 35: Explanation of the abbreviations and terms used

UBX-13005287 - R20

Appendix

Page 58 of 61

SARA-U2 series - Data Sheet


型号：	SARA-U2_V01
厂家：	u-blox AG
描述：	HSPA modules with 2G fallback
文件：	总61页 (文件大小：1871K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

SARA-U2_V01 [U-BLOX]

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