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Users guide

UC864

AUTO

UC864-AWS-AUTO

Hardware User Guide

1vv0300795 Rev. 11 – 2010/11/18

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

This document is relating to the following products:

PRODUCT

UC864-E-AUTO

UC864-AWS-AUTO

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

Disclaimer

The information contained in this document is the proprietary information of Telit

Communications S.p.A. and its affiliates (“TELIT”). The contents are confidential and

any disclosure to persons other than the officers, employees, agents or

subcontractors of the owner or licensee of this document, without the prior written

consent of Telit, is strictly prohibited.

Telit makes every effort to ensure the quality of the information it makes available.

Notwithstanding the foregoing, Telit does not make any warranty as to the

information contained herein, and does not accept any liability for any injury, loss or

damage of any kind incurred by use of or reliance upon the information.

Telit disclaims any and all responsibility for the application of the devices

characterized in this document, and notes that the application of the device must

comply with the safety standards of the applicable country, and where applicable,

with the relevant wiring rules.

Telit reserves the right to make modifications, additions and deletions to this

document due to typographical errors, inaccurate information, or improvements to

programs and/or equipment at any time and without notice. Such changes will,

nevertheless be incorporated into new editions of this application note.

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

Contents

OVERVIEW ............................................................................................................................................................... 6

MECHANICAL DIMENSIONS ............................................................................................................................... 7

2.1.

UC864-E-AUTO

AWS-AUTO

ECHANICAL

IMENSIONS

................................................................................. 7

UC864-E-AUTO / AWS-AUTO MODULE CONNECTIONS............................................................................... 8

3.1.

PIN-OUT ............................................................................................................................................................. 8

TEMPERATURE RANGE ..................................................................................................................................... 12

4.1.

NTENNA

ONNECTOR

(

) ................................................................................................................................... 13

HARDWARE COMMANDS .................................................................................................................................. 14

5.1.

URNING

THE

UC864-E-AUTO

AWS-AUTO ............................................................................................. 14

5.2.

NITIALIZATION AND

CTIVATION STATE

................................................................................................................ 15

5.3.

URNING

OFF

THE

UC864-E-AUTO

AWS-AUTO ........................................................................................... 17

5.3.1.

Shutdown by Software Command

........................................................................................................ 18

5.3.2.

Hardware Shutdown

.............................................................................................................................. 19

5.3.3.

Hardware Unconditional Restart

......................................................................................................... 20

5.4.

UMMARY OF

URNING

AND

OFF

THE MODULE

.............................................................................................. 21

POWER SUPPLY .................................................................................................................................................... 22

6.1.

OWER

UPPLY

EQUIREMENTS

.......................................................................................................................... 22

6.2.

ENERAL

ESIGN

ULES

.................................................................................................................................... 24

6.2.1.

Electrical Design Guidelines

................................................................................................................ 24

6.2.2.

Thermal Design Guidelines

.................................................................................................................. 30

6.2.3.

Power Supply PCB Layout Guidelines

................................................................................................. 32

ANTENNA(S) ........................................................................................................................................................... 34

7.1.

GSM/WCDMA

NTENNA

EQUIREMENTS

.......................................................................................................... 34

7.2.

GSM/WCDMA

NTENNA

NSTALLATION

UIDELINES

....................................................................................... 35

LOGIC LEVEL SPECIFICATIONS ..................................................................................................................... 36

8.1.

ESET

IGNAL

.................................................................................................................................................... 37

USB PORT................................................................................................................................................................ 38

9.1.

USB

TRANSCEIVER SPECIFICATIONS

.................................................................................................................... 39

10.

SERIAL PORTS .................................................................................................................................................. 40

10.1.

ODEM

ERIAL

ORT

.......................................................................................................................................... 40

10.2.

RS232

EVEL

RANSLATION

............................................................................................................................... 43

10.3.

UART

EVEL

RANSITION

.............................................................................................................................. 46

11.

AUDIO SECTION OVERVIEW ....................................................................................................................... 48

11.1.

ELECTION MODE

................................................................................................................................................ 48

11.2.

LECTRICAL

HARACTERISTICS

........................................................................................................................... 50

11.2.1.

Input Lines (MIC1 and MIC2) Characteristics

..................................................................................... 50

11.3.

OUTPUT

LINES

(

PEAKER

)

.............................................................................................................................. 51

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

11.3.1.

Output Lines Characteristics

................................................................................................................ 51

12.

GENERAL PURPOSE I/O ................................................................................................................................. 52

12.1.

OGIC

EVEL

PECIFICATIONS

............................................................................................................................. 54

12.2.

SING A

GPIO

AD AS

NPUT

.............................................................................................................................. 55

12.3.

SING A

GPIO

AD AS

UTPUT

........................................................................................................................... 55

12.4.

SING THE

RANSMISSION

ONTROL

GPIO4 .................................................................................................. 56

12.5.

SING THE

RFTXMON

UTPUT

GPIO5 .............................................................................................................. 56

12.6.

SING THE

LARM

UTPUT

GPIO6 ..................................................................................................................... 56

12.7.

SING THE

UZZER

UTPUT

GPIO7 .................................................................................................................... 57

12.8.

AGNETIC

UZZER

ONCEPTS

............................................................................................................................ 58

12.8.1.

Short Description

................................................................................................................................... 58

12.8.2.

Frequency Behavior

............................................................................................................................... 59

12.8.3.

Power Supply Influence

........................................................................................................................ 59

12.8.4.

Working Current Influence

................................................................................................................... 59

12.9.

SING THE

EMPERATURE

ONITOR

UNCTION

................................................................................................... 60

12.9.1.

Short Description

................................................................................................................................... 60

12.9.2.

Allowed GPIO

.......................................................................................................................................... 60

12.10.

NDICATION OF

ETWORK

ERVICE

VAILABILITY

............................................................................................. 62

12.11.

RTC

YPASS

........................................................................................................................................... 63

12.12.

VAUX1

OWER

UTPUT

................................................................................................................................. 63

13.

DAC AND ADC SECTION ................................................................................................................................ 64

13.1.

DAC

ONVERTER

................................................................................................................................................ 64

13.1.1.

Description

.............................................................................................................................................. 64

13.1.2.

Enabling DAC

.......................................................................................................................................... 64

13.1.3.

Low Pass Filter Example

...................................................................................................................... 65

13.2.

ADC

ONVERTER

................................................................................................................................................ 65

13.2.1.

Description

.............................................................................................................................................. 65

13.2.2.

Using ADC Converter

............................................................................................................................. 65

14.

MOUNTING THE MODULE ON YOUR BOARD ......................................................................................... 66

14.1.

PPLICATION

PCB

AYOUT

................................................................................................................................. 67

14.2.

LEARANCE

REA

............................................................................................................................................... 69

14.3.

HERMAL

ISSIPATION

........................................................................................................................................ 69

14.4.

ODULE

OLDERING

........................................................................................................................................... 70

15.

APPLICATION GUIDE ..................................................................................................................................... 71

15.1.

EBUG OF THE

UC864-E-AUTO

AWS-AUTO

IN PRODUCTION

......................................................................... 71

15.2.

YPASS CAPACITOR ON

OWER SUPPLIES

............................................................................................................ 72

15.3.

SIM

INTERFACE

.................................................................................................................................................. 72

15.4.

EMC

RECOMMENDATIONS

................................................................................................................................... 73

16.

PACKING SYSTEM ........................................................................................................................................... 74

17.

CONFORMITY ASSESSMENT ISSUES ......................................................................................................... 75

18.

SAFETY RECOMMENDATIONS .................................................................................................................... 77

19.

DOCUMENT CHANGE LOG ........................................................................................................................... 78

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

1. Overview

OverviewOverview

Overview

The aim of this document is the description of some hardware solutions useful for

developing a product with the Telit UC864-E-AUTO and UC864-AWS-AUTO modules.

In this document all the basic functions of a mobile phone will be taken into account;

for each one of them a proper hardware solution will be suggested and eventually the

wrong solutions and common errors to be avoided will be evidenced. Obviously this

document cannot embrace the whole hardware solutions and products that may be

designed. The wrong solutions to be avoided must be considered as mandatory, while

the suggested hardware configurations must not be considered mandatory, instead

the information given must be used as a guide and a starting point for properly

developing your product with the Telit UC864-E-AUTO & UC864-AWS-AUTO modules.

For further hardware details that may not be explained in this document refer to the

Telit UC864-E–AUTO & UC864-AWS-AUTO Product Description document where all

the hardware information is reported.

The information presented in this document is believed to be accurate and reliable. However,

no responsibility is assumed by Telit Communications S.p.A. for its use, nor any infringement

of patents or other rights of third parties which may result from its use. No license is granted

by implication or otherwise under any patent rights of Telit Communications S.p.A. other than

for circuitry embodied in Telit products. This document is subject to change without notice.

NOTICE:

(EN) The integration of the GSM/GPRS/EGPRS/WCDMA/HSDPA UC864-E-AUTO & UC864-

AWS-AUTO cellular module within user application must be done according to the design

rules described in this manual.

(IT) L’integrazione del modulo cellulare GSM/GPRS/EGPRS/WCDMA/HSDPA UC864- E-

AUTO e UC864-AWS-AUTO all’interno dell’applicazione dell’utente dovrà rispettare le

indicazioni progettuali descritte in questo manuale.

(DE) Die Integration des UC864- E-AUTO & UC864-AWS-AUTO

GSM/GPRS/EGPRS/WCDMA/HSDPA Mobilfunk-Moduls in ein Gerät muß gemäß der in

diesem Dokument beschriebenen Kunstruktionsregeln erfolgen

(SL) Integracija GSM/GPRS/EGPRS/WCDMA/HSDPA UC864- E-AUTO & UC864-AWS-

AUTO modula v uporabniški aplikaciji bo morala

upoštevati projektna navodila, opisana v tem

piročniku.

(SP) La utilización del modulo GSM/GPRS/EGPRS/WCDMA/HSDPA UC864- E-AUTO &

UC864-AWS-AUTO debe ser conforme a los usos para los cuales ha sido deseñado

descritos en este manual del usuario.

(FR) L’intégration du module cellulaire GSM/GPRS/EGPRS/WCDMA/HSDPA UC864- E-

AUTO & UC864-AWS-AUTO dans l’application de l’utilisateur sera faite selon les règles de

conception décrites dans ce manuel.

(HE) UC864-

AUTO

/ AWS

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

2. Mechanical Dimensions

Mechanical DimensionsMechanical Dimensions

Mechanical Dimensions

2.1. UC864-E-AUTO / AWS-AUTO Mechanical Dimensions

The Telit UC864-E-AUTO / AWS-AUTO module overall dimensions are:

• Length: 36.2 mm

• Width: 30.0 mm

• Thickness: 5.1mm

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

3. UC864

UC864UC864

UC864-

-E

E-

-AUTO

AUTOAUTO

AUTO

/ AWS

/ AWS/ AWS

/ AWS-

-AUTO

AUTO AUTO

AUTO M

Module

odule odule

odule C

Connections

onnections onnections

onnections

3.1. PIN-OUT

UC864-E-AUTO / AWS-AUTO uses an 80 pin Molex p.n. 53949-0878 male connector

for the connections with the external applications. This connector matches the

54150-0878 models.

PinPin

Signal

SignalSignal

Signal

I/O

I/OI/O

I/O

Function

FunctionFunction

Function

Internal

InternalInternal

Internal

Pull up

Pull upPull up

Pull up

Type

TypeType

Type

Power Supply

Power SupplyPower Supply

Power Supply

VBATT -

Main power supply Power

VBATT -

Main power supply Power

VBATT -

Main power supply Power

VBATT -

Main power supply Power

GND -

Ground Power

GND -

Ground Power

GND -

Ground Power

Audio

AudioAudio

Audio

AXE I Hands-free switching CMOS 2.6V

EAR_HF+ AO

Hands-free ear output, phase + Audio

1010

EAR_HF- AO

Hands-free ear output, phase - Audio

1111

EAR_MT+ AO

Handset earphone signal output, phase + Audio

1212

EAR_MT- AO

Handset earphone signal output, phase - Audio

1313

MIC_HF+ AI

Hands-free microphone input; phase + Audio

1414

MIC_HF- AI

Hands-free microphone input; phase - Audio

1515

MIC_MT+ AI

Handset microphone signal input; phase+ Audio

1616

MIC_MT- AI

Handset microphone signal input; phase- Audio

SIM Card Interface

SIM Card InterfaceSIM Card Interface

SIM Card Interface

1818

SIMVCC -

External SIM signal – Power supply for the SIM 1.8 / 3V

1919

SIMRST O

External SIM signal – Reset 1.8 / 3V

2020

SIMIO I/O

External SIM signal - Data I/O 1.8 / 3V

2121

SIMIN I External SIM signal - Presence (active low) CMOS 2.6V

2222

SIMCLK O

External SIM signal – Clock 1.8 / 3V

Trace

TraceTrace

Trace

2323

RX_TRACE I RX Data for debug monitor CMOS 2.6V

2424

TX_TRACE O

TX Data for debug monitor CMOS 2.6V

On this line a maximum of 10nF bypass capacitor is allowed

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

PinPin

Signal

SignalSignal

Signal

I/O

I/OI/O

I/O

Function

FunctionFunction

Function

Internal

InternalInternal

Internal

Pull up

Pull upPull up

Pull up

Type

TypeType

Type

Prog. / Data + Hw Flow Control

Prog. / Data + Hw Flow ControlProg. / Data + Hw Flow Control

Prog. / Data + Hw Flow Control

2525

C103/TXD I Serial data input (TXD) from DTE Pull-Down CMOS 2.6V

2626

C104/RXD O

Serial data output to DTE Pull-Up CMOS 2.6V

2727

C107/DSR O

Output for Data set ready signal (DSR) to DTE Pull-Down CMOS 2.6V

2828

C106/CTS O

Output for Clear to send signal (CTS) to DTE Pull-Up CMOS 2.6V

2929

C108/DTR I Input for Data terminal ready signal (DTR) from DTE Pull-Up CMOS 2.6V

3030

C125/RING O

Output for Ring indicator signal (RI) to DTE Pull-Up CMOS 2.6V

3131

C105/RTS I Input for Request to send signal (RTS) from DTE Pull-Down CMOS 2.6V

3232

C109/DCD O

Output for Data carrier detect signal (DCD) to DTE Pull-Up CMOS 2.6V

Miscellaneous Functions

Miscellaneous FunctionsMiscellaneous Functions

Miscellaneous Functions

3535

USB_ID AI

Analog input used to sense whether a

peripheral device is connected, and

determine the peripheral type, a host

or a peripheral

Analog

3636

PCM_CLOCK I/O

PCM clock out Pull-Down

CMOS 2.6V

DAC and ADC

DAC and ADCDAC and ADC

DAC and ADC

3737

ADC_IN1 AI

Analog/Digital converter input A/D

3838

ADC_IN2 AI

Analog/Digital converter input A/D

3939

ADC_IN3 AI

Analog/Digital converter input A/D

4040

DAC_OUT AO

Digital/Analog converter output D/A

Miscellaneous Functions

Miscellaneous FunctionsMiscellaneous Functions

Miscellaneous Functions

4545

STAT_LED O

Status indicator led CMOS 1.8V

4646

GND -

Ground Ground

4848

USB_VBUS

Power supply for the internal USB transceiver. This pin is

configured as an analog input or an analog output depending

upon the type of peripheral device connected.

47K

Ω

pull-down

4.4V ~5.25V

4949

PWRMON O

Power ON Monitor 1K

Ω

CMOS 2.6V

5050

VAUX1 -

Power output for external accessories

5151

CHARGE AI

Charger input 10K

Ω

pull-down

Power

5252

CHARGE AI

Charger input Power

5353

ON/OFF I

Input command for switching power ON or OFF (toggle

command).

Pulled up on

chip

5454

RESET I Reset input 10K

Ω

5555

VRTC AO

Power supply for RTC block Power

Telit GPIOs

Telit GPIOsTelit GPIOs

Telit GPIOs

5656

GPIO_19 I/O

GPIO19 Configurable GPIO CMOS 2.6V

5757

GPIO_11 I/O

GPIO11 Configurable GPIO CMOS 2.6V

5858

GPIO_20 I/O

GPIO20 Configurable GPIO CMOS 2.6V

5959

GPIO_04 I/O

GPIO4 Configurable GPIO CMOS 2.6V

6060

GPIO_14 I/O

GPIO14 Configurable GPIO CMOS 2.6V

6161

GPIO_15 I/O

GPIO15 Configurable GPIO CMOS 2.6V

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

PinPin

Signal

SignalSignal

Signal

I/O

I/OI/O

I/O

Function

FunctionFunction

Function

Internal

InternalInternal

Internal

Pull up

Pull upPull up

Pull up

Type

TypeType

Type

6262

GPIO_12 I/O

GPIO12 Configurable GPIO CMOS 2.6V

6363

GPIO_10/ PCM_TX I/O

GPIO10 Configurable GPIO / PCM Data Output Pull-Down CMOS 2.6V

6464

GPIO_22 I/O

GPIO22 Configurable GPIO CMOS 1.8V

6565

GPIO_18/ PCM_RX I/O

GPIO18 Configurable GPIO / PCM Data input Pull-Down CMOS 2.6V

6666

GPIO_03 I/O

GPIO3 Configurable GPIO CMOS 2.6V

6767

GPIO_08 I/O

GPIO8 Configurable GPIO CMOS 2.6V

6868

GPIO_06 / ALARM I/O

GPIO6 Configurable GPIO / ALARM CMOS 2.6V

7070

GPIO_01 I/O

GPIO1 Configurable GPIO CMOS 2.6V

7171

GPIO_17/

PCM_SYNC I/O

GPIO17 Configurable GPIO / PCM Sync Pull-Down CMOS 2.6V

7272

GPIO_21 I/O

GPIO21 Configurable GPIO CMOS 2.6V

7373

GPIO_07/ BUZZER I/O

GPIO7 Configurable GPIO / Buzzer CMOS 2.6V

7474

GPIO_02 I/O

GPIO02 I/O pin CMOS 2.6V

7575

GPIO_16 I/O

GPIO16 Configurable GPIO CMOS 2.6V

7676

GPIO_09 I/O

GPIO9 Configurable GPIO CMOS 2.6V

7777

GPIO_13 I/O

GPIO13 Configurable CMOS 2.6V

7878

GPIO_05/ RFTXMON I/O

GPIO05 Configurable GPIO / Transmitter ON monitor CMOS 2.6V

USB Interface

USB InterfaceUSB Interface

USB Interface

USB_D+ I/O

USB differential Data (+)

3.0V

~3.6V

8080

USB_D- I/O

USB differential Data (-)

3.0V

~3.6V

RESERVED

RESERVEDRESERVED

RESERVED

1717

3333

3434

4141

4242

4343

4444

4747

6969

NOTE: RESERVED pins must not be connected

RTS must be connected to the GND (on the module side) if flow control is not used

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

Note

NoteNote

Note:

If not used, almost all pins must be left disconnected. The only exceptions are the

following:

PinPin

Signal

SignalSignal

Signal

Function

FunctionFunction

Function

VBATT Main power supply

GND Ground

4646

GND Ground

2525

C103/TXD Serial data input (TXD) from DTE

2626

C104/RXD Serial data output to DTE

3131

C105/RTS Input for Request to send signal (RTS) from DTE

5353

ON/OFF Input command for switching power ON or OFF (toggle

command).

5454

RESET Reset input

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

4. TEMPERATURE RANGE

TEMPERATURE RANGETEMPERATURE RANGE

TEMPERATURE RANGE

The UC864-E-AUTO / AWS-AUTO Temperature ranges are:

Reference Ambient Temperature

Reference Ambient TemperatureReference Ambient Temperature

Reference Ambient Temperature

Normal Operating -10°C to +55°C

Extended Operating -20°C to +70°C

Extreme Range -30°C to +85°C

Storage -40°C to +85°C

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

4.1. Antenna Connector(s)

The UC864-E-AUTO / AWS-AUTO module is designed with a 50 Ohm RF PAD that

permits to interface it with an application equipped by a Rosenberger coaxial Board

to board connector.

The counterpart suitable is a Rosenberger 99CI106-030L5.

Suggested footprint on the application side:

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

5. Hardware Commands

Hardware CommandsHardware Commands

Hardware Commands

5.1. Turning ON the UC864-E-AUTO / AWS-AUTO

To turn on UC864-E-AUTO / AWS-AUTO, the pad ON# must be tied low for at least 1

second and then released.

The maximum current that can be drained from the ON# pad is 0,1 mA.

A simple

circuit

to do it is:

ON#

Power ON impulse

GND

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

5.2. Initialization and Activation state

Upon turning on UC864-E-AUTO / AWS-AUTO, the module is not activated yet

because the boot sequence of UC864-E-AUTO / AWS-AUTO is still going on internally.

It takes about 10 seconds to complete the initializing the module internally.

For this reason, it would be useless to try to access UC864-E-AUTO/ AWS-AUTO

during a

Initialization state

as below. To get the desirable stability, UC864-E-AUTO /

AWS-AUTO needs at least 10 seconds after the PWRMON goes High.

During the

Initialization state

, any kind of AT-command is not available. DTE must be

waiting for the

Activation state

to communicate with UC864-E-AUTO / AWS-AUTO.

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

For example:

1- Let us assume you need to drive the ON/OFF# pad with a totem pole output of a

+1.8/5 V microcontroller (uP_OUT1):

NOTE:

NOTE: NOTE:

NOTE:

To check if the UC864-E-AUTO / AWS-AUTO has powered on, the hardware line

PWRMON must be monitored. When PWRMON goes high, the module has powered

on.

NOTE:

NOTE: NOTE:

NOTE:

Do not use any pull up resistor on the ON/OFF# line, it is internally pulled up. Using

pull up resistor may bring to latch up problems on the UC864-E-AUTO / AWS-AUTO

power regulator and improper power on/off of the module. The line ON/OFF# must

be connected only in open collector configuration.

NOTE:

NOTE: NOTE:

NOTE:

In this document all the lines are inverted. Active low signals are labeled with a name

that ends with a "#" or with a bar over the name.

NOTE:

NOTE: NOTE:

NOTE:

UC864-E-AUTO / AWS-AUTO

turns fully on also by supplying power to the Charge pad

(provided there is a battery on the VBATT pads).

10k

1.8 / 5V

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

5.3. Turning OFF the UC864-E-AUTO / AWS-AUTO

Turning off the device can be done in three ways:

• by software command (see UC864-E-AUTO / AWS-AUTO Software User

Guide)

• by hardware shutdown

• by Hardware Unconditional Restart

When the device is shut down by software command or by hardware shutdown, it

issues to the network a detach request that informs the network that the device will

not be reachable any more.

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

5.3.1. Shutdown by Software Command

UC864-E-AUTO / AWS-AUTO can be shut down by a software command.

When a shut down command is sent, UC864-E-AUTO / AWS-AUTO goes into the

finalization state and finally will shut down PWRMON at the end of this state.

The period of the finalization state can differ according to the situation in which the

UC864-E-AUTO / AWS-AUTO is so it cannot be fixed definitely.

Normally it will be above 10 seconds later from sending a shut down command and

DTE should monitor the status of PWRMON to see the actual power off.

TIP:

TIP: TIP:

TIP:

To check if the device has powered off, hardware line PWRMON must be monitored.

When PWRMON goes low, the device has powered off.

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

5.3.2. Hardware Shutdown

To turn OFF UC864-E-AUTO / AWS-AUTO the pad ON/OFF# must be tied low for at

least 2 seconds and then released. Same circuitry and timing for the power on must

be used.

When the hold time of ON/OFF# is above 2 seconds, UC864-E-AUTO / AWS-AUTO

goes into the finalization state and finally will shut down PWRMON at the end of this

state.

The period of the finalization state can differ according to the situation in which the

UC864-E-AUTO / AWS-AUTO is so it cannot be fixed definitely.

Normally it will be above 10 seconds later from releasing ON/OFF# and DTE should

monitor the status of PWRMON to see the actual power off.

TIP:

TIP: TIP:

TIP:

To check if the device has powered off, hardware line PWRMON must be monitored.

When PWRMON goes low, the device has powered off.

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

5.3.3. Hardware Unconditional Restart

To unconditionally restart UC864-E-AUTO / AWS-AUTO, the pad RESET# must be tied

low for at least 200 milliseconds and then released.

A simple circuit to do it is:

NOTE:

NOTE: NOTE:

NOTE:

Do not use any pull up resistor on the RESET# line or any totem pole digital output.

Using pull up resistor may bring to latch up problems on the UC864-E-AUTO / AWS-

AUTO power regulator and improper functioning of the module. The line RESET#

must be connected only in open collector configuration.

TIP:

TIP: TIP:

TIP:

The unconditional hardware Restart must always be implemented on the boards and

the software must use it as an emergency exit procedure.

RESET#

Unconditional Restart

impulse

GND

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For example:

1- Let us assume you need to drive the RESET# pad with a totem pole output of a

+1.8/5 V microcontroller (uP_OUT2):

5.4. Summary of Turning ON and OFF the module

Below chart describes the overall sequences for Turning ON and OFF.

10k

+1.8 / 5V

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6. Power Supply

Power SupplyPower Supply

Power Supply

The power supply circuitry and board layout are a very important part in the full

product design and they strongly reflect on the product overall performances. Read

carefully the requirements and the guidelines that will follow for a proper design.

6.1. Power Supply Requirements

The UC864-E-AUTO / AWS-AUTO power requirements are:

Power Supply

Power SupplyPower Supply

Power Supply

Nominal Supply Voltage 3.8V

Max Supply Voltage 4.2V

Supply Voltage Range 3.4V – 4.2V

UC864

UC864UC864

UC864-

-E

E-

-AUTO

AUTOAUTO

AUTO/ AWS

/ AWS/ AWS

/ AWS-

-AUTO

AUTOAUTO

AUTO

Mode

ModeMode

Mode

Average(mA)

Average(mA)Average(mA)

Average(mA)

Mode D

Mode DMode D

Mode Description

escriptionescription

escription

IDLE mode Stand by mode; no call in progress

AT+CFUN=1 WCDMA 22.0 Normal mode; full functionality of the module

GSM 15.0

AT+CFUN=4 WCDMA 17.8 Disabled TX and RX; modules is not registered on the

network

GSM 17.8

AT+CFUN=0 or

AT+CFUN=5

WCDMA 4.1 / 1.3*

Power saving; CFUN=0 module registered on the

network and can receive voice call or an SMS; but it is

not possible to send AT commands; module wakes up with

an unsolicited code (call or SMS) or rising RTS line.

CFN=5 full functionality with power saving;

Module registered on the network can receive

incoming call sand SMS

GSM 3.3 / 1.3*

WCDMA TX and RX mode

WCDMA Voice 690 WCDMA voice channel

WCDMA data 680 WCDMA data channel

HSDPA 730 HSDPA data channel

GSM TX and RX mode

GSM Voice 320 GSM voice channel

GPRS Class12 650 GPRS data channel

EDGE Class12 430 EDGE data channel

* Worst/best case depends on network configuration and is not under module control.

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In GSM/GPRS mode, RF transmission is not continuous and it is packed into bursts at

a base frequency of about 216 Hz, and the relative current peaks can be as high as

about 2A. Therefore the power supply has to be designed in order to withstand these

current peaks without big voltage drops; this means that both the electrical design

and the board layout must be designed for this current flow. If the layout of the PCB

is not well designed, a strong noise floor is generated on the ground; this will reflect

on all the audio paths producing an audible annoying noise at 216 Hz; if the voltage

drops during the peak, current absorption is too much. The device may even shut

down as a consequence of the supply voltage drop.

TIP:

TIP: TIP:

TIP:

The electrical design for the Power supply must be made ensuring that it will be

capable of a peak current output of at least 2A.

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6.2. General Design Rules

The principal guidelines for the Power Supply Design embrace three different design

steps:

• the electrical design

• the thermal design

• the PCB layout

6.2.1. Electrical Design Guidelines

The electrical design of the power supply depends strongly on the power source

where this power is drained. We will distinguish them into three categories:

• +5V input (typically PC internal regulator output)

• +12V input (typically automotive)

• battery

6.2.1.1. + 5V Input Source Power Supply Design Guidelines

• The desired output for the power supply is 3.8V, hence there is not a big

difference between the input source and the desired output and a linear

regulator can be used. A switching power supply will not be suited

because of the low drop-out requirements.

• When using a linear regulator, a proper heat sink must be provided in

order to dissipate the power generated.

• A Bypass low ESR capacitor of adequate capacity must be provided in

order to cut the current absorption peaks close to UC864-E-AUTO / AWS-

AUTO, a 100µF tantalum capacitor is usually suited.

• Make sure the low ESR capacitor on the power supply output (usually a

tantalum one) is rated at least 10V.

• A protection diode must be inserted close to the power input, in order to

save UC864-E-AUTO / AWS-AUTO from power polarity inversion.

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An example of linear regulator with 5V input is:

6.2.1.2. + 12V Input Source Power Supply Design Guidelines

• The desired output for the power supply is 3.8V, hence due to the big

difference between the input source and the desired output, a linear

regulator is not suited and must not be used. A switching power supply

will be preferable because of its better efficiency especially with the 2A

peak current load represented by UC864-E-AUTO / AWS-AUTO.

• When using a switching regulator, a 500kHz or more switching frequency

regulator is preferable because of its smaller inductor size and its faster

transient response. This allows the regulator to respond quickly to the

current peaks absorption.

• In any case, the frequency and Switching design selection is related to the

application to be developed due to the fact the switching frequency could

also generate EMC interferences.

• For car PB battery the input voltage can rise up to 15.8V and this must be

kept in mind when choosing components: all components in the power

supply must withstand this voltage.

• A Bypass low ESR capacitor of adequate capacity must be provided in

order to cut the current absorption peaks. A 100µF tantalum capacitor is

usually suited for this.

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• Make sure the low ESR capacitor on the power supply output (usually a

tantalum one) is rated at least 10V.

• For Car applications a spike protection diode must be inserted close to

the power input, in order to clean the supply from spikes.

• A protection diode must be inserted close to the power input, in order to

save UC864-E-AUTO / AWS-AUTO from power polarity inversion. This can

be the same diode as for spike protection.

An example of switching regulator with 12V input is in the below schematic (it is split

in 2 parts):

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6.2.1.3. Battery Source Power Supply Design Guidelines

• The desired nominal output for the power supply is 3.8V and the

maximum allowed voltage is 4.2V, hence a single 3.7V Li-Ion cell battery

type is suited for supplying the power to the Telit UC864-E-AUTO / AWS-

AUTO module. The three cells Ni/Cd or Ni/MH 3.6 V Nom. battery types or

4V PB types must not be used directly since their maximum voltage can

rise over the absolute maximum voltage for UC864-E-AUTO / AWS-AUTO

and damage it.

• A Bypass low ESR capacitor of adequate capacity must be provided in

order to cut the current absorption peaks, a 100µF tantalum capacitor is

usually suited.

• Make sure the low ESR capacitor (usually a tantalum one) is rated at least

10V.

• A protection diode must be inserted close to the power input, in order to

save UC864-E-AUTO / AWS-AUTO from power polarity inversion.

Otherwise the battery connector must be done in a way to avoid polarity

inversions when connecting the battery.

• The battery capacity must be at least 500mAh in order to withstand the

current peaks of 2A; the suggested capacity is from 500mAh to 1000mAh.

NOTE:

NOTE: NOTE:

NOTE:

Do not use any Ni-Cd, Ni-MH, and Pb battery types directly connected with UC864-E-

AUTO / AWS-AUTO. Their use can lead to overvoltage on UC864-E-AUTO / AWS-AUTO

and damage it. Use only Li-Ion battery types.

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6.2.1.4. Battery Charge Control Circuitry Design Guidelines

The charging process for Li-Ion Batteries can be divided into 4 phases:

• qualification and trickle charging

• fast charge 1 - constant current

• final charge - constant voltage or pulsed charging

• maintenance charge

The qualification process consists of a battery voltage measure, indicating roughly its

charge status. If the battery is deeply discharged, meaning its voltage is lower than

the trickle charging threshold, then charging must start slowly, possibly with a

current limited to the pre-charging process. The current must be kept very low with

respect to the fast charge value.

During trickle charging the voltage across the battery terminals rises; when it

reaches the fast charge threshold level the charging process goes into a fast charge

phase.

During the fast charge phase the process proceeds with a current limited for

charging; this current limit depends on the required time for completing the charge

and on battery pack capacity. During this phase the voltage across the battery

terminals still raises but at a lower rate. Once the battery voltage reaches its

maximum voltage the process goes into its third state: Final charging. The voltage

measure to change the process status into final charge is very important. It must be

ensured that the maximum battery voltage is never exceeded, otherwise the battery

may be damaged and even explode.

Moreover, for constant final chargers, the voltage phase (final charge) must not start

before the battery voltage has reached its maximum value, otherwise the battery

capacity will be slightly reduced. The final charge can be of two different types:

constant voltage or pulsed. UC864-E-AUTO / AWS-AUTO uses constant voltage.

The constant voltage charge proceeds with a fixed voltage regulator (very accurately

set to the maximum battery voltage) and the current will decrease while the battery

is becoming charged. When the charging current falls below a certain fraction of the

fast charge current value, the battery is considered fully charged, the final charge

stops and eventually starts the maintenance.

The pulsed charge process has no voltage regulation, instead charge continues with

pulses. Usually the pulse charge works in the following manner: the charge is

stopped for some time, let us say few hundreds of ms, then the battery voltage will

be measured and when it drops below its maximum value, a fixed time length

charging pulse is issued. As the battery approaches its full charge, the off time will

become longer and the duty-cycle of the pulses will decrease. The battery is

considered fully charged when the pulse duty-cycle is less than a threshold value,

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typically 10%. When this happens, the pulse charge stops and eventually the

maintenance starts.

The last phase is not properly a charging phase, since the battery at this point is fully

charged and the process may stop after the final charge. The maintenance charge

provides an additional charging process to compensate the charge leak typical of a

Li-Ion battery. It is done by issuing pulses with a fixed time length, again few

hundreds of ms, and a duty-cycle around 5% or less.

This last phase is not implemented in the UC864-E-AUTO / AWS-AUTO internal

charging algorithm so once-charged battery is left discharging down to a certain

threshold. It is cycled from full charge to slight discharge even if the battery charger

is inserted. This guarantees that the remaining charge in the battery is a good

percentage and that the battery is not damaged by keeping it always fully charged

(Li-Ion rechargeable batteries usually deteriorate when kept fully charged).

Last but not least, in some applications, it is highly desired that the charging process

restarts when the battery is discharged and its voltage drops below a certain

threshold. This is typical for the UC864-E-AUTO / AWS-AUTO internal charger.

As you can see, the charging process is not a trivial task to do; moreover all these

operations must start only if battery temperature is inside charging range, usually

5°C - 45°C.

The UC864-E-AUTO / AWS-AUTO measures the temperature of its internal

component in order to satisfy this last requirement. This not exactly the same as the

battery temperature but in common use, the two temperatures must not differ too

much and the charging temperature range must be guaranteed.

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6.2.2. Thermal Design Guidelines

The thermal design for the power supply heat sink must be done with the following

specifications:

• Average current consumption during HSDPA transmission @PWR level

max in UC864-E-AUTO / AWS-AUTO : 730mA

• Average current consumption during class12 GPRS transmission @PWR

level max: 650mA

NOTE:

NOTE: NOTE:

NOTE:

For all the threshold voltages, inside UC864-E-AUTO / AWS-AUTO, all thresholds are

fixed in order to maximize Li-Ion battery performances and do not need to be

changed.

NOTE:

NOTE: NOTE:

NOTE:

In this application the battery charger input current must be limited to less than

400mA. This can be done by using a current limited wall adapter as the power

source.

NOTE:

NOTE: NOTE:

NOTE:

When starting the charger from Module powered off, the startup will be in CFUN4; to

activate the normal mode a command AT+CFUN=1 has to be provided.

There is also the possibility to activate the normal mode using the ON_OFF* signal.

In this case, when HW powering off the module with the same line (ON_OFF*) and

having the charger still connected, the module will go back to CFUN4.

NOTE:

NOTE:NOTE:

NOTE:

It is important to have a 100ųF Capacitor to VBAT in order to avoid instability of the

charger circuit if the battery is accidentally disconnected during the charging activity.

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Considering the very low current during idle, especially if Power Saving function is

enabled, it is possible to consider from the thermal point of view that the device

absorbs current significantly only during calls.

If we assume that the device stays in transmission for short periods of time (let us

say few minutes) and then remains for quite a long time in idle (let us say one hour),

then the power supply has always the time to cool down between the calls and the

heat sink could be smaller than the calculated for 730mA maximum RMS current.

There could even be a simple chip package (no heat sink).

Moreover in average network conditions the device is requested to transmit at a

lower power level than the maximum and hence the current consumption will be less

than 730mA (being usually around 250mA).

For these reasons the thermal design is rarely a concern and the simple ground

plane where the power supply chip is placed can be enough to ensure a good thermal

condition and avoid overheating.

For the heat generated by the UC864-E-AUTO / AWS-AUTO, you can consider it to be

during transmission 2W max. This generated heat will be mostly conducted to the

ground plane under the UC864-E-AUTO / AWS-AUTO; you must ensure that your

application can dissipate heat

In the WCDMA/HSDPA mode, since UC864-E-AUTO / AWS-AUTO emits RF signals

continuously during transmission, you must pay special attention how to dissipate

the heat generated.

The current consumption will be up to about 730mA in HSDPA (680mA in WCDMA)

continuously at the maximum TX output power (24dBm). Thus, you must arrange the

PCB area as large as possible under UC864-E-AUTO / AWS-AUTO which you will

mount. You must mount UC864-E-AUTO / AWS-AUTO on the large ground area of

your application board and make many ground vias to dissipate the heat.

The peak current consumption in the GSM mode is higher than that in WCDMA.

However, considering the heat sink is more important in case of WCDMA.

NOTE:

NOTE: NOTE:

NOTE:

The average consumption during transmissions depends on the power level at which

the device is requested to transmit via the network. The average current

consumption hence varies significantly.

NOTE:

NOTE: NOTE:

NOTE:

The thermal design for the Power supply must be made keeping an average

consumption at the max transmitting level during calls of 730mA rms.

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As mentioned before, a GSM signal is bursty, thus, the temperature drift is more

insensible than WCDMA. Consequently, if you prescribe the heat dissipation in the

WCDMA mode, you don’t need to think more about the GSM mode.

6.2.3. Power Supply PCB Layout Guidelines

As seen in the electrical design guidelines, the power supply must have a low ESR

capacitor on the output to cut the current peaks and a protection diode on the input

to protect the supply from spikes and polarity inversion. The placement of these

components is crucial for the correct working of the circuitry. A misplaced

component can be useless or can even decrease the power supply performances.

• The Bypass low ESR capacitor must be placed close to the Telit UC864-E-

AUTO / AWS-AUTO power input pads, or in the case the power supply is a

switching type, it can be placed close to the inductor to cut the ripple if the

PCB trace from the capacitor to UC864-E-AUTO / AWS-AUTO is wide

enough to ensure a drop-less connection even during the 2A current

peaks.

• The protection diode must be placed close to the input connector where

the power source is drained.

• The PCB traces from the input connector to the power regulator. IC must

be wide enough to ensure no voltage drops to occur when the 2A current

peaks are absorbed. Note that this is not made in order to save power

loss but especially to avoid the voltage drops on the power line at the

current peaks frequency of 216 Hz that will reflect on all the components

connected to that supply (also introducing the noise floor at the burst

base frequency.) For this reason while a voltage drop of 300-400 mV may

be acceptable from the power loss point of view, the same voltage drop

may not be acceptable from the noise point of view. If your application

does not have audio interface but only uses the data feature of the Telit

UC864-E-AUTO, then this noise is not so disturbing and power supply

layout design can be more forgiving.

• The PCB traces to UC864-E-AUTO / AWS-AUTO and the Bypass capacitor

must be wide enough to ensure no significant voltage drops to occur when

the 2A current peaks are absorbed. This is a must for the same above-

mentioned reasons. Try to keep this trace as short as possible.

• The PCB traces connecting the Switching output to the inductor and the

switching diode must be kept as short as possible by placing the inductor

and the diode very close to the power switching IC (only for switching

power supply). This is done in order to reduce the radiated field (noise) at

the switching frequency (usually 100-500 kHz).

• The use of a good common ground plane is suggested.

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• The placement of the power supply on the board must be done in a way to

guarantee that the high current return paths in the ground plane are not

overlapped to any noise sensitive circuitry as the microphone

amplifier/buffer or earphone amplifier.

• The power supply input cables must be kept separately from noise

sensitive lines such as microphone/earphone cables.

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7. Antenna

AntennaAntenna

Antenna(s)

(s)(s)

(s)

The antenna connection and board layout design are the most important parts in the

full product design and they strongly reflect on the product’s overall performances.

Read carefully and follow the requirements and the guidelines for a proper design.

7.1. GSM/WCDMA Antenna Requirements

As suggested on the Product Description, the antenna for a Telit UC864-E-AUTO /

AWS-AUTO device must fulfill the following requirements:

Furthermore if the device is developed for the US market, it must comply to the FCC

approval requirements:

This device is to be used only for mobile and fixed application. The antenna(s) used

for this transmitter must be installed to provide a separation distance of at least 20

cm from all persons and must not be co-located or operating in conjunction with any

other antenna or transmitter. End-Users must be provided with transmitter

operation conditions for satisfying RF exposure compliance. OEM integrators must

ensure that the end user has no manual instructions to remove or install the UC864-

AWS-AUTO module

Antennas used for this OEM module must not exceed

.18 dBi

(GSM 850), 2.78 dBi (PCS 1900) and 1.43 dBi (FDD IV)

gain for mobile and fixed

operating configurations.

GSM /WCDMA ANTENNA REQUIREMENTS

GSM /WCDMA ANTENNA REQUIREMENTSGSM /WCDMA ANTENNA REQUIREMENTS

GSM /WCDMA ANTENNA REQUIREMENTS

Frequency range

Frequency rangeFrequency range

Frequency range

Depending by frequency band(s) provided by the network

operator, the customer shall use the most suitable antenna for

that/those band(s)

Bandwidth

BandwidthBandwidth

Bandwidth

UC864

UC864UC864

UC864-

-E

E-

-AUTO

AUTOAUTO

AUTO

80 MHz in GSM900, 170 MHz in DCS

250 MHz in WCDMA2100 band

UC864

UC864UC864

UC864-

-AWS

AWSAWS

AWS-

-AUTO

AUTOAUTO

AUTO

70 MHz in GSM850, 140 MHz in PCS

455 MHz in WCDMA1700(AWS) band

WCDMA AWS band : TX = 45MHz, RX = 45MHz

TX-RX freq. separation = 400MHz

Gain

GainGain

Gain

Gain <

7.18 dBi (GSM 850), 2.78 dBi (PCS 1900) and 1.43 dBi (FDD

IV)

Impedance

ImpedanceImpedance

Impedance

50 Ohm

Input power

Input powerInput power

Input power

> 33dBm(2 W) peak power in GSM

> 24dBm Average power in WCDMA

VSWR absolute max

VSWR absolute maxVSWR absolute max

VSWR absolute max

<= 10:1

VSWR recommended

VSWR recommendedVSWR recommended

VSWR recommended

<= 2:1

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7.2. GSM/WCDMA Antenna - Installation Guidelines

• Install the antenna in a place covered by the GSM/WCDMA signal.

• The Antenna must be installed to provide a separation distance of at least

20 cm from all persons and must not be co-located or operating in

conjunction with any other antenna or transmitter;

• Antenna must not be installed inside metal cases;

• Antenna must be installed also according Antenna manufacturer

instructions.

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8. Logic L

Logic LLogic L

Logic Level

evel evel

evel S

Specifications

pecificationspecifications

pecifications

Where not specifically stated, all the interface circuits work at 2.6V CMOS logic

levels. The following table shows the logic level specifications used in the Telit

UC864-E-AUTO / AWS-AUTO interface circuits:

For 2.6V CMOS signals:

Absolute Maximum Ratings

Absolute Maximum Ratings Absolute Maximum Ratings

Absolute Maximum Ratings -

-Not Functional

Not FunctionalNot Functional

Not Functional

Parameter

ParameterParameter

Parameter

UC864

UC864UC864

UC864-

-E

E-

-AUTO

AUTOAUTO

AUTO

/ AWS

/ AWS/ AWS

/ AWS-

-AUTO

AUTOAUTO

AUTO

Min

MinMin

Min

Max

MaxMax

Max

Input level on any

digital pin when on -0.3V +3.0V

Input voltage on

analog pins when on

-0.3V +3.0 V

Ope

OpeOpe

Operating Range

rating Range rating Range

rating Range -

Interface levels

Interface levelsInterface levels

Interface levels

Level

LevelLevel

Level

UC864

UC864UC864

UC864-

-E

E-

-AUTO

AUTOAUTO

AUTO

/ AWS

/ AWS/ AWS

/ AWS-

-AUTO

AUTOAUTO

AUTO

Min

MinMin

Min

Max

MaxMax

Max

Input high level 2.0V 2.9 V

Input low level -0.3V 0.6V

Output high level 2.15V 2.6V

Output low level 0V 0.45V

For 1,8V signals:

Operating Range

Operating Range Operating Range

Operating Range -

Interface levels (1.8V CMOS)

Interface levels (1.8V CMOS)Interface levels (1.8V CMOS)

Interface levels (1.8V CMOS)

Lev

LevLev

Level

elel

UC864

UC864UC864

UC864-

-E

E-

-AUTO

AUTOAUTO

AUTO

/ AWS

/ AWS/ AWS

/ AWS-

-AUTO

AUTOAUTO

AUTO

Min

MinMin

Min

Max

MaxMax

Max

Input high level 1.5V 2.1V

Input low level -0.3V 0.5V

Output high level 1.35V 1.8V

Output low level 0V 0.45V

NOTE:

NOTE: NOTE:

NOTE:

Do not connect UC864-E-AUTO / AWS-AUTO’s digital logic signal directly to OEM’s

digital logic signal of with level higher than 3.0V.

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8.1. Reset Signal

Signal

SignalSignal

Signal

Function

FunctionFunction

Function

I/O

I/OI/O

I/O

PIN Number

PIN NumberPIN Number

PIN Number

RESET Phone reset

I 54

RESET is used to reset the UC864-E-AUTO / AWS-AUTO module. Whenever this

signal is pulled low, UC864-E-AUTO / AWS-AUTO is reset. When the device is reset it

stops all operations. After the release of the reset UC864-E-AUTO / AWS-AUTO is

unconditionally shut down, without doing any detach operations from the network

where it is registered. This behavior is not a proper shutdown because the device is

requested to issue a detach request on turn off. For this reason, the Reset signal

must not be used for normally shutting down the device, but only as an emergency

exit in the rare case the device remains stuck waiting for some network response.

The RESET is internally controlled on start-up to achieve always a proper power-on

reset sequence. There is no need to control this pin on start-up. It may only be used

to reset a device already on, that is, not responding to any command.

Reset Signal Operating levels:

Signal

SignalSignal

Signal

Min

MinMin

Min

Max

MaxMax

Max

RESET Input high 2.0V* 2.6V

RESET Input low 0V 0.2V

* This signal is internally pulled up so the pin can be left floating if not used.

If unused, this signal may be left unconnected. If used, it must always be connected

with an open collector transistor to permit the internal circuitry the power on reset

and under voltage lockout functions.

NOTE:

NOTE: NOTE:

NOTE:

Do not use this signal to power off UC864-E-AUTO / AWS-AUTO. Use the ON/OFF

signal to perform this function or the AT#SHDN command.

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9. USB Port

USB PortUSB Port

USB Port

UC864-E-AUTO / AWS-AUTO includes an integrated universal serial bus (USB)

transceiver, compatible with USB 2.0 specifications and supporting the USB Full-

Speed (12 Mb/s) mode. In HSDPA (High Speed downlink Packet Access) mode, the

downlink data speed rates up to 7.2Mbps. Hence OEMs need to interface UC864-E-

AUTO / AWS-AUTO to applications in full-speed (12Mbits/s) mode.

This is the main communication port suggested for the OEM application.

Signal

SignalSignal

Signal

UC864

UC864UC864

UC864-

-E

E-

-AUTO

AUTOAUTO

AUTO

/ AWS

/ AWS/ AWS

/ AWS-

-AUTO

AUTOAUTO

AUTO

Pad No.

Pad No.Pad No.

Pad No.

Usage

UsageUsage

Usage

USB_VBUS 48

Power supply for the internal USB transceiver. This pin is configured

as an analog input or an analog output depending upon the type of

peripheral device connected.

USB_D- 80 Minus (-) line of the differential, bi-directional USB signal to/from the

peripheral device

USB D+ 79 Plus (+) line of the differential, bi-directional USB signal to/from the

peripheral device

USB_ID

(for future use) 35

Analog input used to sense whether a peripheral device is

connected and if connected, to determine the peripheral type, host or

slave

NOTE:

NOTE:NOTE:

NOTE:

UC864-E-AUTO / AWS-AUTO

does NOT support host device operation at the moment,

that is, it works as a slave device. Consequently USB_ID must be opened (not

connected).

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9.1. USB transceiver specifications

This is the on-chip USB transceiver specifications

Parameter

ParameterParameter

Parameter

Comments

CommentsComments

Comments

Min

MinMin

Min

Typ

TypTyp

Typ

Max

MaxMax

Max

Unit

UnitUnit

Unit

USB_VBUS

USB_VBUSUSB_VBUS

USB_VBUS

Supply Voltage 4.5 5.0 5.25 V

Supply Current 25 mA

Input Lev

Input LevInput Lev

Input Levels for Low

els for Lowels for Low

els for Low-

-/full

/full/full

/full-

-speed :

speed :speed :

speed :

Receiver Threshold (single-end) 0.8 2.0 V

Differential Input Sensitivity |D+ - D-|, V

= 0.8V to 2.5V 0.2 V

Differential Common-mode Range Includes V

0.8 2.5 V

Output Levels for Low

Output Levels for LowOutput Levels for Low

Output Levels for Low-

-/full

/full/full

/full-

-speed :

speed :speed :

speed :

Low R

= 1.5 kΩ to 3.6 V 0.3 V

High R

= 15 kΩ to GND 2.8 3.6 V

Output Signal Crossover Voltage 1.3 2.0 V

Terminations :

Terminations :Terminations :

Terminations :

Internal pull-up resistor V

TRM

to D+, V

TRM

to D- 1.425

1.5 1.575

kΩ

Internal pull-down resistor D+ to GND, D- to GND 14.3 15 24.8 kΩ

High-Z state output impedance 0 V < V

< 3.6V; measured at D+

and D- pins to GND 300 kΩ

Termination Voltage An internal supply voltage, V

TRM

3.0 3.3 3.6 V

Driver

Driver Driver

Driver c

characteristics

haracteristics haracteristics

haracteristics –

––

–

Full speed

ull speedull speed

ull speed

Transition time :

Rise time

Fall time

= 50 to 125 pF

Rise/fall time matching 90 111 %

Series output resistance D+, D- 28 33 44 Ω

Driver characteristics

Driver characteristics Driver characteristics

Driver characteristics –

––

–

Low speed

ow speedow speed

ow speed

Transition time :

Rise time

Fall time

= 50 to 600 pF

300

Rise/fall time matching 80 125 %

USB_ID (for future use only)

USB_ID (for future use only)USB_ID (for future use only)

USB_ID (for future use only)

ID pin pull-up resistance 108 140 182 kΩ

A device detection threshold t

delay

< 1 us, V

hys

= 50mV

0.15*V

TRM

B device detection threshold t

delay

< 1 us, V

hys

= 50mV

0.8*V

TRM

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10. Serial Ports

Serial PortsSerial Ports

Serial Ports

The serial port on the Telit UC864-E-AUTO / AWS-AUTO is another possible interface

between the module and OEM hardware.

2 serial ports are available on the module:

• MODEM SERIAL PORT;

• MODEM SERIAL PORT 2 (DEBUG).

10.1. Modem Serial Port

Several configurations can be designed for the serial port on the OEM hardware. The

most common are:

• RS232 PC com port;

• microcontroller UART @ 2.6V – 2.9V (Universal Asynchronous Receive

Transmit) ;

• microcontroller UART @ 5V or other voltages different from 2.6V .

Depending on the type of serial port on the OEM hardware, a level translator circuit

may be needed to make the system work. The only configuration that does not need a

level translation is the 2.6V UART.

The serial port on UC864-E-AUTO / AWS-AUTO is a +2.6V UART with all the 7 RS232

signals. It differs from the PC-RS232 in signal polarity (RS232 is reversed) and levels.

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The levels for UC864-E-AUTO / AWS-AUTO UART are the CMOS levels:

Absolute Maximum Ratings

Absolute Maximum Ratings Absolute Maximum Ratings

Absolute Maximum Ratings -

Not Functional

Not FunctionalNot Functional

Not Functional

Parameter

ParameterParameter

Parameter

Min

MinMin

Min

Max

MaxMax

Max

Input level on any

digital pin when on -0.3V +3.0V

Input voltage on

analog pins when on

-0.3V +3.0 V

Operating Range

Operating Range Operating Range

Operating Range -

Interface

Interface Interface

Interface L

Levels

evelsevels

evels

Level

LevelLevel

Level

Min

MinMin

Min

Max

MaxMax

Max

Input high level 2.0V 2.9 V

Input low level -0.3V 0.6V

Output high level 2.15V 2.6V

Output low level 0V 0.45V

The signals of the UC864-E-AUTO / AWS-AUTO serial port are:

Internal pull-up or pull-down resistance is not a fixed value and it may differ from case by ca

se.

The resistance can be calculated from the DC characteristics considering a level of 2.6V DC.

In this case I_ILPU(input low leakage current with pull-up) is between -60 and -10uA.

Then the resistance can be calculated as V/I=2.6/60u ~ 2.6/10u = 43.3K ~ 260K.

In case of pull-down, it can be calculated in the same way.

PinPin

Signal

SignalSignal

Signal I/O

I/OI/O

I/O Function

FunctionFunction

Function Internal

InternalInternal

Internal

Pulls Up/Dn

Pulls Up/DnPulls Up/Dn

Pulls Up/Dn

Type

TypeType

Type

2525

C103/TXD I Serial data input (TXD) from DTE Pull-Down CMOS 2.6V

2626

C104/RXD O Serial data output to DTE Pull-Up CMOS 2.6V

2727

C107/DSR O Output for Data set ready signal (DSR) to DTE Pull-Down CMOS 2.6V

2828

C106/CTS O Output for Clear to send signal (CTS) to DTE Pull-Up CMOS 2.6V

2929

C108/DTR I

Input for Data terminal ready signal (DTR) from

DTE Pull-Up CMOS 2.6V

3030

C125/RING

O Output for Ring indicator signal (RI) to DTE Pull-Up CMOS 2.6V

3131

C105/RTS I

Input for Request to send signal (RTS) from

DTE Pull-Down CMOS 2.6V

3232

C109/DCD O

Output for Data carrier detect signal (DCD) to

DTE Pull-Up CMOS 2.6V

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NOTE:

NOTE: NOTE:

NOTE:

According to V.24, RX/TX signal names are referred to the application side, therefore

on the UC864-E-AUTO / AWS-AUTO side these signal are on the opposite direction:

TXD on the application side will be connected to the receive line (here named TXD/

rx_uart ) of the UC864-E-AUTO / AWS-AUTO serial port and vice versa for RX.

TIP:

TIP: TIP:

TIP:

For minimum implementation, only the TXD and RXD lines can be connected, the

other lines can be left open provided a software flow control is implemented.

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10.2. RS232 Level Translation

In order to interface the Telit UC864-E-AUTO / AWS-AUTO with a PC com port or a

RS232 (EIA/TIA-232) application a level translator is required. This level translator

must:

• invert the electrical signal in both directions;

• change the level from 0/2.6V to +15/-15V .

Actually, the RS232 UART 16450, 16550, 16650 & 16750 chipsets accept signals with

lower levels on the RS232 side (EIA/TIA-562), allowing a lower voltage-multiplying

ratio on the level translator. Note that the negative signal voltage must be less than

0V and hence some sort of level translation is always required.

The simplest way to translate the levels and invert the signal is by using a single chip

level translator. There are a multitude of them, differing in the number of drivers and

receivers and in the levels (be sure to get a true RS232 level translator not a RS485

or other standards).

By convention the driver is the level translator from the 0-2.6V UART to the RS232

level. The receiver is the translator from the RS232 level to 0-2.6V UART.

In order to translate the whole set of control lines of the UART you will need:

• 5 drivers

• 3 receivers

NOTE:

NOTE: NOTE:

NOTE:

The digital input lines working at 2.6V CMOS have an absolute maximum input

voltage of 3.0V; therefore the level translator IC shall not be powered by the +3.8V

supply of the module. Instead, it must be powered from a +2.6V / +2.9V (dedicated)

power supply.

This is because in this way the level translator IC outputs on the module side (i.e.

UC864-E-AUTO / AWS-AUTO inputs) will work at +3.8V interface levels, damaging

the

module inputs.

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An example of level translation circuitry of this kind is:

The example is done with a SIPEX SP3282EB RS232 Transceiver that could accept

supply voltages lower than 3V DC.

NOTE:

NOTE: NOTE:

NOTE:

In this case Vin has to be set with a value compatible with the logic levels of the

module. (Max 2.9V DC). In this configuration the SP3282EB will adhere to EIA/TIA-

562

voltage levels instead of RS232 (-5 ~ +5V)

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Second solution could be done using a MAXIM transceiver (MAX218) In this case the

compliance with RS232 (+-5V) is possible.

Another level adapting method could be done using a standard RS232 Transceiver

(MAX3237EAI) adding some resistors to adapt the levels on the UC864 Input lines.

NOTE: In this case has to be taken in account the length of the lines on the

application to avoid problems in case of High-speed rates on RS232.

The RS232 serial port lines are usually connected to a DB9 connector with the

following layout: signal names and directions are named and defined from the DTE

point of view.

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10.3. 5V UART Level Transition

If the OEM application uses a microcontroller with a serial port (UART) that works at

a voltage different from 2.6 – 2.9V, then a circuitry has to adapt the different levels of

the two signal sets. As for the RS232 translation, there are a multitude of single chip

translators. For example a possible translator circuit for a 5V

TRANSMITTER/RECEIVER can be:

TIP:

TIP: TIP:

TIP:

This logic IC for the level translator and 2.6V pull-ups (not the 5V one) can be

powered directly from PWRMON line of UC864-E-AUTO / AWS-AUTO. Note that the

TC7SZ07AE has open drain output; therefore the resistor R2 is mandatory.

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A power source of the internal interface voltage corresponding to the 2.6V CMOS high

level is available at the VAUX pin on the connector.

A maximum of 9 resistors of 47 KΩ pull-up can be connected to the VAUX pin,

provided no other devices are connected to it and the pulled-up lines are UC864-E-

AUTO / AWS-AUTO input lines connected to open collector outputs in order to avoid

latch-up problems on UC864-E-AUTO / AWS-AUTO.

Careful approach is needed to avoid latch-up on UC864-E-AUTO / AWS-AUTO and the

use of this output line to power electronic devices must be avoided, especially for

devices that generate spikes and noise such as switching level translators, micro

controllers, failure in any of these condition can severely compromise the UC864-E-

AUTO / AWS-AUTO functionality.

NOTE:

NOTE: NOTE:

NOTE:

The input lines working at 2.6VCMOS can be pulled-up with 47KΩ resistors that can

be connected directly to the VAUX line. It is a must that they are connected as in this

example.

The preferable configuration is having external supply for the buffer.

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11. Audio Section Overview

Audio Section OverviewAudio Section Overview

Audio Section Overview

The

Baseband

chip was developed for the cellular phones, which needed two separated amplifiers

both in

and in

section.

A couple of amplifiers had to be used with internal audio transducers while the other couple of

amplifiers had to be used with external audio transducers.

To distinguish the schematic signals and the Software identifiers, two different definitions were

introduced, with the following meaning:

• internal audio transducers



HS/MT

HS/MTHS/MT

HS/MT

(from

HandS

Set

MicroT

Telephone

)

• external audio transducers 

HF HF

(from HandsFree )

Actually the acronyms have not the original importance.

In other words this distinction is not necessary, being the performances between the two blocks like

the same.

Only if yhe customer needs higher output power to the speaker , he has a constraint. Otherwise the

choice could be done in order to overcome the PCB design difficulties.

For these reasons we have not changed the

and

acronyms, keeping them in the Software and

on the schematics.

The Base Band Chip of the UC864-E-AUTO / AWS-AUTO Telit Module maintains the same

architecture.

For more information refer to Telit document:

„

80000NT10025a UC864 Audio Settings Application Note

80000NT10025a UC864 Audio Settings Application Note80000NT10025a UC864 Audio Settings Application Note

80000NT10025a UC864 Audio Settings Application Note“

11.1.

Selecti

SelectiSelecti

Selection mode

on modeon mode

on mode

Only one block can be active at a time, and the activation of the requested audio path

is done via hardware by

AXE

AXEAXE

AXE

line or via software by

AT#CAP

AT#CAPAT#CAP

AT#CAP

command.

Moreover the

Sidetone

SidetoneSidetone

Sidetone

functionality could be implemented by the amplifier fitted between the

transmit path and the receive path, enabled at request in both modes

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UC864-E-AUTO / AWS-AUTO Audio Front End (

AFE

AFEAFE

AFE

)

100nF

Baseband

Audio Front End

Single ended

Balanced

Single ended

Bias

100nF

Single ended

Balanced

HPH_L (EAR_AMP2)

HPH_R (EAR_AMP3)

Differential Driver

32 Handset

Mono Differential

Headphone

32 Load

MIC1P

MIC1N

MIC2P

MIC2N

EAR1ONP (EAR_AMP1)

EAR1OP (EAR_AMP1)

uc864afe.skd

MIC 1

MIC 2

Ear_HF+

Ear_HF-

Mic_HF+

Mic_HF-

Ear MT+

Ear MT-

MIC MT+

MIC MT-

Single ended

Bias

Balanced

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11.2. Electrical Characteristics

Electrical CharacteristicsElectrical Characteristics

Electrical Characteristics

11.2.1. Input Lines

(

((

(

MIC1 and MIC2

MIC1 and MIC2MIC1 and MIC2

MIC1 and MIC2

)

))

)

Characteristics

Line coupling AC (*)

Line type Balanced / Unbalanced

Coupling capacitor

100nF

Differential input impedance 20Kohm

Differential input voltage

908mV

rms

(≤ 1290mV

rms

)

@ MicG=0dB

“Mic_MT” and “Mic_HF”

“Mic_MT” and “Mic_HF”“Mic_MT” and “Mic_HF”

“Mic_MT” and “Mic_HF” microphone paths

(*) WARNING :

(*) WARNING : (*) WARNING :

(*) WARNING : AC means that the signals from the microphone have to be

connected to input lines of the module through capacitors which value has to

be • 100nf. not respecting this constraint, the input stages will be damaged.

WARNING:

WARNING: WARNING:

WARNING: when

particular OEM application needs a

Single Ended Input

configuration, it is forbidden connecting the unused input directly to Ground,

but only through a 100nF capacitor. Don’t

forget that thus the useful input signal will be halved.

TIP:

TIP: TIP:

TIP: Being the microphone circuitry the more noise sensitive, its design and layout

must be realized with particular care. Both microphone paths are balanced and the

OEM circuitry must be balanced designed to reduce the common mode noise

typically generated on the ground plane. However

the customer can use the unbalanced circuitry for particular application.

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11.3. OUTPUT LINES

(

((

(

Speaker)

Speaker)Speaker)

Speaker)

We suggest driving the load differentially from both output drivers, thus the output

swing will double and the need for the output coupling capacitor avoided.

If a

particular OEM application needs a

Single Ended Output

configuration the output

power will be reduced four times.

The OEM circuitry shall be designed to reduce the common mode noise typically

generated on the ground plane and to get the maximum power output from the

device (low resistance tracks).

(*) WARNING:

(*) WARNING:(*) WARNING:

(*) WARNING:

Using single ended configuration, the unused output line must be left open.

Not respecting this constraint, the output stage will be damaged.

11.3.1. Output Lines Characteristics

Line coupling differential

single-ended

Output load impedance differential 32 ohm (≤ 26)

Differential output impedance ≤ 01 ohm @1.02kHz

Signal bandwidth 150 - 4000 Hz @ -3 dB

Differential output voltage (typ.) 1060 mV

rms

/32 ohm

Max Output Power 70mW @ 32 ohm

Max load capacitance 500pF

“

Ear_MT

Ear_MTEar_MT

Ear_MT

”

Output

OutputOutput

Output

(

EAR_AMP1

differential amplifier)

Line coupling differen

tial

single-ended

Output load impedance differential

single-

ended

32 ohm (≤ 26)

16 ohm (≤ 12)

S.E. output impedance ≤ 0,5 ohm @ 1.02kHz

signal bandwidth 150 - 4000 Hz @ -3 dB

Differential output voltage (typ.) 833 mV

rms

/32 ohm

Max Output Power @ 32 ohm

@ 16 ohm

44mW differential

22mW single-ended

Max load capacitance 1000pF

“

Ear_HF

Ear_HFEar_HF

Ear_HF

”

Output

OutputOutput

Output

(

EAR_AMP2 + EAR_AMP3

amplifiers)

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12. General Purpose I/O

General Purpose I/OGeneral Purpose I/O

General Purpose I/O

The general-purpose I/O pads can be configured to act in three different ways:

• input

• output

• alternate function (internally controlled)

Input pads can only be read and report the digital value (high or low) present on the

pad at the read time; output pads can only be written or queried and set the value of

the pad output; an alternate function pad is internally controlled by the UC864-E-

AUTO / AWS-AUTO firmware and acts depending on the function implemented.

The following GPIOs are available on the UC864-E-AUTO / AWS-AUTO:

PINPIN

Signal

SignalSignal

Signal

I/O

I/OI/O

I/O

Function

FunctionFunction

Function

Type

TypeType

Type

Drive

Drive Drive

Drive

strength

strengthstrength

strength

Default

Default Default

Default

State

StateState

State

ON_OFF

ON_OFF ON_OFF

ON_OFF

State

StateState

State

Reset

Reset Reset

Reset

State

StateState

State

Note

NoteNote

Note

70 GPIO_01

I/O

GPIO01 Configurable GPIO CMOS 2.6V 2mA INPUT LOW HIGH

74 GPIO_02

I/O

GPIO02 Configurable GPIO CMOS 2.6V 2mA INPUT LOW HIGH

66 GPIO_03

I/O

GPIO03 Configurable GPIO CMOS 2.6V 2mA INPUT LOW LOW

59 GPIO_04

I/O

GPIO04 Configurable GPIO CMOS 2.6V 2mA INPUT LOW LOW

Alternate

Function (RF

Transmission

Control)

78 GPIO_05

I/O

GPIO05 Configurable GPIO CMOS 2.6V 2mA INPUT LOW LOW

Alternate

Function

(RFTXMON)

68 GPIO_06

I/O

GPIO06 Configurable GPIO CMOS 2.6V 2mA INPUT LOW HIGH

Alternate

function

(ALARM)

73 GPIO_07

I/O

GPIO07 Configurable GPIO CMOS 2.6V 2mA INPUT LOW LOW

Alternate

function

(BUZZER)

67 GPIO_08

I/O

GPIO08 Configurable GPIO CMOS 2.6V 2mA INPUT LOW LOW

76 GPIO_09

I/O

GPIO09 Configurable GPIO CMOS 2.6V 2mA INPUT LOW HIGH

63 GPIO_10

I/O

GPIO10 Configurable GPIO CMOS 2.6V 2mA INPUT LOW LOW

57 GPIO_11

I/O

GPIO11 Configurable GPIO CMOS 2.6V 2mA INPUT LOW LOW

62 GPIO_12

I/O

GPIO12 Configurable GPIO CMOS 2.6V 2mA INPUT LOW HIGH

77 GPIO_13

I/O

GPIO13 Configurable GPIO CMOS 2.6V 2mA INPUT LOW LOW

60 TGPIO_1

4 I/O

GPIO14 Configurable GPIO CMOS 2.6V 2mA INPUT LOW HIGH

61 GPIO_15

I/O

GPIO15 Configurable GPIO CMOS 2.6V 2mA INPUT LOW HIGH

75 GPIO_16

I/O

GPIO16 Configurable GPIO CMOS 2.6V 2mA INPUT LOW HIGH

71 GPIO_17

I/O

GPIO17 Configurable GPIO CMOS 2.6V 2mA INPUT LOW LOW

65 GPIO_18

I/O

GPIO18 Configurable GPIO CMOS 2.6V 2mA INPUT LOW LOW

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56 GPIO_19

I/O

GPIO19 Configurable GPIO CMOS 2.6V 2mA INPUT LOW LOW

58 GPIO_20

I/O

GPIO20 Configurable GPIO CMOS 2.6V 2mA INPUT LOW LOW

72 GPIO_21

I/O

GPIO21 Configurable GPIO CMOS 2.6V 2mA INPUT HIGH HIGH

64 GPIO_22

I/O

GPIO22 Configurable GPIO CMOS 1.8V

(not 2.6V) 2mA INPUT LOW HIGH

Not all GPIO pads support all these three modes:

• GPIO4 supports all three modes and can be input, output, RF

Transmission Control (Alternate function)

• GPIO5 supports all three modes and can be input, output, RFTX monitor

output (Alternate function)

• GPIO6 supports all three modes and can be input, output, alarm output

(Alternate function)

• GPIO7 supports all three modes and can be input, output, buzzer output

(Alternate function)

Some alternate functions for UC864-E-AUTO / AWS-AUTO may be added if needed.

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12.1. Logic Level Specifications

Where not specifically stated, all the interface circuits work at 2.6V CMOS logic levels.

The following table shows the logic level specifications used in the UC864-E-AUTO /

AWS-AUTO interface circuits:

Absolute Maximum Ratings

Absolute Maximum Ratings Absolute Maximum Ratings

Absolute Maximum Ratings -

-Not Functional

Not FunctionalNot Functional

Not Functional

Parameter

ParameterParameter

Parameter

UC864

UC864UC864

UC864-

-E

E-

-AUTO

AUTOAUTO

AUTO

/ AWS

/ AWS/ AWS

/ AWS-

-AUTO

AUTOAUTO

AUTO

Min

MinMin

Min

Max

MaxMax

Max

Input level on any

digital pin when on

-0.3V +3.0V

Input voltage on

analog pins when on

-0.3V +3.0 V

For 2.6V CMOS signals;

Operating Range

Operating Range Operating Range

Operating Range -

Interface levels

Interface levelsInterface levels

Interface levels

Level

LevelLevel

Level

UC864

UC864UC864

UC864-

-E

E-

-AUTO

AUTOAUTO

AUTO

/ AWS

/ AWS/ AWS

/ AWS-

-AUTO

AUTOAUTO

AUTO

Min

MinMin

Min

Max

MaxMax

Max

Input high level 2.0V 2.9 V

Input low level -0.3V 0.6V

Output high level 2.15V 2.6V

Output low level 0V 0.45V

For 1.8V signals:

Operating Range

Operating Range Operating Range

Operating Range -

Interface levels (1.8V CMOS)

Interface levels (1.8V CMOS)Interface levels (1.8V CMOS)

Interface levels (1.8V CMOS)

Level

LevelLevel

Level

UC864

UC864UC864

UC864-

-E

E-

-AUTO

AUTOAUTO

AUTO

/ AWS

/ AWS/ AWS

/ AWS-

-AUTO

AUTOAUTO

AUTO

Min

MinMin

Min

Max

MaxMax

Max

Input high level 1.5V 2.1V

Input low level -0.3V 0.5V

Output high level 1.35V 1.8V

Output low level 0V 0.45V

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12.2. Using a GPIO Pad as Input

The GPIO pads, when used as inputs, can be connected to a digital output of another

device and report its status, provided this device has interface levels compatible with

the 2.6V CMOS levels of the GPIO.

If the digital output of the device is connected with the GPIO input, the pad has

interface levels different from the 2.6V CMOS. It can be buffered with an open

collector transistor with a 47KΩ pull-up resistor to 2.6V.

12.3. Using a GPIO Pad as Output

The GPIO pads, when used as outputs, can drive 2.6V CMOS digital devices or

compatible hardware. When set as outputs, the pads have a push-pull output and

therefore the pull-up resistor may be omitted.

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12.4. Using the RF Transmission Control GPIO4

The GPIO4 pin, when configured as RF Transmission Control Input, permits to disable

the Transmitter when the GPIO is set to Low by the application. In the design it is

necessary to add a pull up resistor (47K to PWRMON).

12.5. Using the RFTXMON Output GPIO5

The GPIO5 pin, when configured as RFTXMON Output, is controlled by the UC864-E-

AUTO / AWS-AUTO module and will rise when the transmitter is active and fall after

the transmitter activity is completed.

For example, if a call is started, the line will be HIGH during all conversations and it

will be again LOW after hanged up.

The line rises up 300ms before first TX burst and will become again LOW from 500ms

to 1sec after last TX burst.

12.6. Using the Alarm Output GPIO6

The GPIO6 pad, when configured as Alarm Output, is controlled by the UC864-E-

AUTO / AWS-AUTO module and will rise when the alarm starts and fall after the

issue of a dedicated AT command.

This output can be used to power up the UC864-E-AUTO / AWS-AUTO controlling

microcontroller or application at the alarm time, giving you the possibility to program

a timely system wake-up to achieve some periodic actions and completely turn off

either the application or the UC864-E-AUTO / AWS-AUTO during sleep periods. This

will dramatically reduce the sleep consumption to few µA.

In battery-powered devices this feature will greatly improve the autonomy of the

device.

NOTE:

NOTE: NOTE:

NOTE:

During RESET the line is set to HIGH logic level.

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12.7. Using the Buzzer Output GPIO7

As Alternate Function, the GPIO7 is controlled by the firmware that depends on the

function implemented internally.

This setup places always the GPIO7 pin in OUTPUT direction and the corresponding

function must be activated properly by AT#SRP command (refer to AT commands

specification).

Also in this case, the

dummy value

for the pin state can be both “0” or “1”.

send the command AT#GPIO=7, 1, 2<cr>:

wait for response OK

send the command AT#SRP=3

The GPIO7 pin will be set as

Alternate Function

pin with its dummy logic status set to

HIGH

value.

The "Alternate function” permits your application to easily implement Buzzer feature

with some small hardware extension of your application as shown in the next sample

figure.

NOTE:

NOTE: NOTE:

NOTE:

To correctly drive a buzzer, a driver must be provided. its characteristics depend on

the buzzer. Refer to your buzzer vendor.

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12.8. Magnetic Buzzer Concepts

12.8.1. Short Description

A magnetic Buzzer is a sound-generating device with a coil located in the magnetic

circuit consisting of a permanent magnet, an iron core, a high permeable metal disk

and a vibrating diaphragm.

Drawing of the Magnetic Buzzer.

The disk and diaphragm are attracted to the core by the magnetic field. When an

oscillating signal is moved through the coil, it produces a fluctuating magnetic field,

which vibrates the diaphragm at a frequency of the drive signal. Thus the sound is

produced as relative to the frequency applied.

Diaphragm movement.

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12.8.2. Frequency Behavior

The frequency behavior represents the effectiveness of the reproduction of the

applied signals. Because its performance is related to a square driving waveform

(whose amplitude varies from 0V to Vpp), if you modify the waveform (e.g. from

square to sinus) the frequency response will change.

12.8.3. Power Supply Influence

After applying a signal with a different amplitude from suggested by the

manufacturer, a performance change will follow, according to the rule “

if resonance

frequency f

increases, amplitude decreases

”.

Because resonance frequency depends on acoustic design and lowering the

amplitude of the driving signal, the response bandwidth tends to become narrow, and

vice versa.

Summarizing:

Vpp

↑

 f

o o

↓

Vpp 

o o

↑

The risk is that the

o o

could easily fall outside of new bandwidth; consequently the

SPL could be much lower than the expected.

12.8.4. Working Current Influence

In the component data sheet you will find the value of MAX CURRENT: this

represents the maximum average current that can flow at nominal voltage without

current limitation.

In other words it is not the peak current, which could be twice or three times higher.

If driving circuitry does not support these peak values, the SPL will never reach the

declared level or the oscillations will stop.

WARNING

WARNINGWARNING

WARNING:

It is very important to respect the sense of the applied voltage: never apply to the "-"

pin a voltage more positive than "+" pin. If this happens, the diaphragm vibrates in

the opposite sense with a high probability to be expelled from its physical position.

This damages the device permanently.

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12.9. Using the Temperature Monitor Function

12.9.1. Short Description

The Temperature Monitor is a function of the module that permits to control its

internal temperature and if properly set (see the #TEMPMON command on AT

Interface guide) it raises to High Logic level a GPIO when the maximum temperature

is reached.

12.9.2. Allowed GPIO

The AT#TEMPMON set command could be used with one of the following GPIO:

Signal

SignalSignal

Signal

Function

FunctionFunction

Function

Type

TypeType

Type

Drive

Drive Drive

Drive

strength

strengthstrength

strength

Note

NoteNote

Note

GPIO_01 GPIO01 Configurable GPIO CMOS 2.6V 2mA

GPIO_03 GPIO03 Configurable GPIO CMOS 2.6V 2mA

GPIO_08 GPIO08 Configurable GPIO CMOS 2.6V 2mA

GPIO_09 GPIO09 Configurable GPIO CMOS 2.6V 2mA

GPIO_10 GPIO10 Configurable GPIO CMOS 2.6V 2mA

GPIO_11 GPIO11 Configurable GPIO CMOS 2.6V 2mA

GPIO_12 GPIO12 Configurable GPIO CMOS 2.6V 2mA

GPIO_13 GPIO13 Configurable GPIO CMOS 2.6V 2mA

GPIO_14 GPIO14 Configurable GPIO CMOS 2.6V 2mA

GPIO_15 GPIO15 Configurable GPIO CMOS 2.6V 2mA

GPIO_16 GPIO16 Configurable GPIO CMOS 2.6V 2mA

GPIO_17 GPIO17 Configurable GPIO CMOS 2.6V 2mA

GPIO_18 GPIO18 Configurable GPIO CMOS 2.6V 2mA

GPIO_19 GPIO19 Configurable GPIO CMOS 2.6V 2mA

GPIO_20 GPIO20 Configurable GPIO CMOS 2.6V 2mA

GPIO_22 GPIO22 Configurable GPIO CMOS 1.8V (not

2.6V) 2mA

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The set command could be used also with one of the following GPIO but in that case

the alternate function is not usable:

Sign

SignSign

Signal

alal

Function

FunctionFunction

Function

Type

TypeType

Type

Drive

Drive Drive

Drive

strength

strengthstrength

strength

Note

NoteNote

Note

GPIO_02 GPIO02 Configurable GPIO CMOS 2.6V 2mA Alternate

function(JDR)

GPIO_04 GPIO04 Configurable GPIO CMOS 2.6V 2mA Alternate Function (RF

Transmission Control)

GPIO_05 GPIO05 Configurable GPIO CMOS 2.6V 2mA Alternate Function

(RFTXMON)

GPIO_07 GPIO07 Configurable GPIO CMOS 2.6V 2mA Alternate function

(BUZZER)

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12.10. Indication of Network Service Availability

The STAT_LED pin status shows information on the network service availability and

Call status. In the UC864-E-AUTO / AWS-AUTO modules, the STAT_LED usually

needs an external transistor to drive an external LED. Because of the above, the

status indicated in the following table is reversed with respect to the pin status:

LED status

LED statusLED status

LED status

Device

DeviceDevice

Device Status

StatusStatus

Status

Permanently off Device off

Fast blinking

(Period 1s, Ton 0,5s)

Net search / Not registered /

turning off

Slow blinking

(Period 3s, Ton 0,3s)

Registered full service

Permanently on a call is active

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12.11. RTC Bypass Out

The VRTC pin brings out the Real Time Clock supply, which is separate from the rest

of the digital part, allowing having only RTC going on when all the other parts of the

device are off. To this power output a backup capacitor can be added in order to

increase the RTC autonomy during power off of the battery.

NOTE: NO devices must be powered from this pin.

12.12. VAUX1 Power Output

A regulated power supply output is provided in order to supply small devices from

the module. This output is active when the module is ON and goes OFF when the

module is shut down. The operating range characteristics of the supply are:

Operating Range

Operating Range Operating Range

Operating Range –

VAUX1 power supply

VAUX1 power supplyVAUX1 power supply

VAUX1 power supply

Min

MinMin

Min

Typical

TypicalTypical

Typical

Max

MaxMax

Max

Output voltage

Output voltageOutput voltage

Output voltage

2.6V 2.65V 2.7V

Output current

Output currentOutput current

Output current

100mA

Output bypass capacitor

Output bypass capacitorOutput bypass capacitor

Output bypass capacitor

(Inside the module)

(Inside the module)(Inside the module)

(Inside the module)

2.2µF

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13. DAC and ADC section

DAC and ADC sectionDAC and ADC section

DAC and ADC section

13.1. DAC Converter

13.1.1. Description

The UC864-E-AUTO / AWS-AUTO module provides a Digital to Analog Converter. The

signal (named DAC_OUT) is available on pin 40 of the UC864-E-AUTO / AWS-AUTO

module and on pin 17 of PL102 on EVK2 Board (KS101C).

The on board DAC is a 16-bit converter, able to generate an analogue value based on

a specific input in the range from 0 up to 65535 but recalibrated in the range from 0

to 1023. However, an external low-pass filter is necessary.

Min

MinMin

Min

Max

MaxMax

Max

Units

UnitsUnits

Units

Voltage range (filtered) 0 2.6 Volt

Range 0 1023 Steps

The precision is 1023 steps, so if we consider that the maximum voltage is 2V, the

integrated voltage could be calculated with the following formula:

Integrated output voltage = 2 * value / 1023

DAC_OUT line must be integrated (for example with a low band pass filter) in order to

obtain an analog voltage.

13.1.2. Enabling DAC

An AT command is available to use the DAC function. The command

is:AT#DAC[=<enable>[,<value>]]

<value> - scale factor of the integrated output voltage (0..1023 - 10 bit precision)

it must be present if <enable>=1

Refer to SW User Guide or AT Commands Reference Guide for the full description of

this function.

NOTE:

NOTE: NOTE:

NOTE:

The DAC frequency is selected internally. D/A converter must not be used during

POWERSAVING.

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13.1.3. Low Pass Filter Example

13.2. ADC Converter

13.2.1. Description

The on board ADCs are 8-bit converters. They are able to read a voltage level in the

range of 0-2 volts applied on the ADC pin input and store and convert it into 8 bit

word.

Min

MinMin

Min

Max

MaxMax

Max

Units

UnitsUnits

Units

Input Voltage range 0 2 Volt

AD conversion - 8 bits

Resolution - < 10.2 mV

The UC864-E-AUTO / AWS-AUTO module provides 3 Analog to Digital Converters.

The input lines are:

ADC_IN1 available on Pin 37 and Pin 19 of PL102 on EVK2 Interface.

ADC_IN2 available on Pin 38 and Pin 20 of PL102 on EVK2 Interface.

ADC_IN3 available on Pin 39 and Pin 21 of PL102 on EVK2 Interface.

13.2.2. Using ADC Converter

An AT command is available to use the ADC function.

The command is AT#ADC=1,2 The read value is expressed in mV

Refer to SW User Guide or AT Commands Reference Guide for the full description of

this function.

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14. Mounting the module on your board

Mounting the module on your boardMounting the module on your board

Mounting the module on your board

The position of the Molex board-to-board connector and pin 1 are shown in the

following picture.

NOTE:

NOTE: NOTE:

NOTE:

The Metal taps present on UC864-E-AUTO / AWS-AUTO must be connected to GND

This module could not be processed with a reflow

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14.1. Application PCB Layout

To obtain the best thermal dissipation it is suggested to design the host PCB as in the

below image where a Ground area has been created below the module.

Bottom side

Top View

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Top side

Top View

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14.2. Clearance Area

14.3. Thermal Dissipation

To permit a better thermal dissipation it is suggested to use a Thermal conductive

material between the module and the application PCB.

Suggested types are Bergquist (Two parts) GAP filler 3500 or GAP Filler 1500

Clearance area for SMT

Components

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14.4. Module Soldering

The module could be soldered on the application in different kind of ways. Typical processes are

follows:

• Manual Soldering

• Automatic Selective soldering

• Wave soldering

We suggest respecting necessary Clearance area in the design to permit a proper soldering process

as shown in previous chapter.

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15. Application guide

Application guideApplication guide

Application guide

15.1. Debug of the UC864-E-AUTO /

AWS-AUTO in production

To test and debug the mounting of UC864-E-AUTO / AWS-AUTO, we strongly

recommend to foresee test pads on the host PCB, in order to check the connection

between the UC864-E-AUTO / AWS-AUTO itself and the application and to test the

performance of the module connecting it with an external computer. Depending on

the customer application, these pads include, but are not limited to the following

signals:

• TXD

• RXD

• ON/OFF

• RESET

• GND

• VBATT

• TX_TRACE

• RX_TRACE

• PWRMON

• USB_VBUS

• USB_D+

• USB_D-

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15.2. Bypass capacitor on Power supplies

When a sudden voltage is asserted to or cut from the power supplies, the steep

transition makes some reactions such as the overshoot and undershoot.

This abrupt voltage transition can affect the device not to work or make it

malfunction.

The bypass capacitors are needed to alleviate this behavior and it can be affected

differently according to the various applications. The customers have to pay special

attention to this when they design their application board..

The length and width of the power lines need to be considered carefully and the

capacitance of the capacitors need to be selected accordingly.

The capacitor will also avoid the ripple of the power supplies and the switching noise

caused in TDMA system like GSM.

Specially the suitable bypass capacitor must be mounted on the Vbatt (Pin 1,2,3,4)

and USB_VBUS (Pin 48) lines in the application board.

The recommended values can be presented as;

 100uF for Vbatt

 10uF for USB_VBUS

But the customers still have to consider that the capacitance mainly depends on the

conditions of their application board.

Generally more capacitance is required as the power line is longer.

15.3. SIM interface

The resistor value on SIMIO pulled up to SIMVCC should be defined accordingly in

order to be compliant to 3GPP specification.

6.8kohm can be recommended but it may depend on the application design..

Refer to the following document for the detail;

 Telit_SIM_interface_and ESD_protection_Application_note_r1

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15.4. EMC recommendations

UC864-E-AUTO / AWS-AUTO signals are provided by some EMC protections. In any

case the accepted levels are different on the pins. The characteristics are described

in the following Table:

PinPin

Signal

SignalSignal

Signal

I/O

I/OI/O

I/O

Function

FunctionFunction

Function

Contact

ContactContact

Contact

Air

AirAir

Air

Power Supply

Power SupplyPower Supply

Power Supply

1,2,3,4

1,2,3,41,2,3,4

1,2,3,4

VBATT - Main power supply

± 8KV

± 15KV

SIM Card Interface

SIM Card InterfaceSIM Card Interface

SIM Card Interface

1818

SIMVCC - External SIM signal – Power supply for the SIM

± 8KV

± 15KV

1919

SIMRST O External SIM signal – Reset

± 8KV

± 15KV

2020

SIMIO I/O External SIM signal - Data I/O

± 8KV

± 15KV

2222

SIMCLK O External SIM signal – Clock

± 8KV

± 15KV

Miscellaneous Fun

Miscellaneous FunMiscellaneous Fun

Miscellaneous Functions

ctionsctions

ctions

3535

USB_ID AI

Analog input used to sense whether a peripheral device is

connected

± 8KV

± 15KV

Miscellaneous Functions

Miscellaneous FunctionsMiscellaneous Functions

Miscellaneous Functions

4848

USB_VBUS AI Power supply for the internal USB transceiver.

± 8KV

± 15KV

5050

VAUX1 - Power output for external accessories

± 8KV

± 15KV

51, 52

51, 5251, 52

51, 52

CHARGE AI Charger input

± 8KV

± 15KV

5353

ON/OFF I Input command for switching power ON or OFF (toggle command).

± 8KV

± 15KV

5454

RESET I Reset input

± 8KV

± 15KV

5555

VRTC AO Power supply for RTC block

± 8KV

± 15KV

Antenna

AntennaAntenna

Antenna

PAD

PADPAD

PAD

Antenna Pad AI Antenna pad for Rosenberger connector

± 8KV

± 15KV

All other pins have the following characteristics:

HBM JESD22-A114-B ± 2000 V

CDM JESD22-C101-C ± 500 V

The Board to Board connector has to be considered as NO TOUCH area.

Appropriate Series resistors has to be considered to protect the input lines from overvoltage.

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16. Pac

PacPac

Pack

king system

ing systeming system

ing system

The Telit UC864-E-AUTO / AWS-AUTO is packaged on trays. Each tray contains 20

pieces with the following dimensions:

NOTE:

NOTE: NOTE:

NOTE:

Trays can withstand the maximum temperature of 65° C.

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17. Conformity Assessment Issues

Conformity Assessment IssuesConformity Assessment Issues

Conformity Assessment Issues

The Telit UC864

UC864UC864

UC864-

-E

E-

-AUTO

AUTOAUTO

AUTO module has been assessed in order to satisfy the essential requirements

of the R&TTE Directive 1999/05/EC (Radio Equipment & Telecommunications Terminal Equipments)

to demonstrate the conformity against the harmonized standards with the final involvement of a

Notified Body.

If the module is installed in conformance to the Telit installation manuals, no further evaluation

under Article 3.2

Article 3.2Article 3.2

Article 3.2 of the R&TTE Directive and do not require further involvement of a R&TTE

Directive Notified Body for the final product.

In all other cases, or if the manufacturer of the final product is in doubt, then the equipment

integrating the radio module must be assessed against Article 3.2

Article 3.2Article 3.2

Article 3.2 of the R&TTE Directive.

In all cases the assessment of the final product must be made against the Essential requirements

of the R&TTE Directive Articles 3.1(a)

Articles 3.1(a)Articles 3.1(a)

Articles 3.1(a) and (b)

(b)(b)

(b), Safety and EMC respectively, and any relevant Article

3.3 requirements.

This Hardware User Guide contains all the information you may need for developing a product

meeting the R&TTE Directive.

The Telit UC864

UC864UC864

UC864-

-AWS

AWSAWS

AWS-

-AUTO

AUTOAUTO

AUTO module is FCC Approved as module to be installed in other devices.

This device is to be used only for fixed and mobile applications. If the final product after integration

is intended for portable use, a new application and FCC is required.

The UC864

UC864UC864

UC864-

-AWS

AWSAWS

AWS-

-AUTO

AUTOAUTO

AUTO Module

ModuleModule

Module is conforming to the following US Directives:

• Use of RF Spectrum. Standards: FCC 47 Part 22 (GSM 850), Part 24 (PCS 1900) and Part 27 (FDD

IV)

• EMC (Electromagnetic Compatibility). Standards: FCC47 Part 15

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two

conditions:

(1) this device may not cause harmful interference, and

(2) this device must accept any interference received, including interference that may cause

undesired operation.

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To meet the FCC's RF exposure rules and regulations:

• The system antenna(s) used for this transmitter must be installed to provide a separation

distance of at least 20 cm from all the persons and must not be co-located or operating in

conjunction with any other antenna or transmitter.

•

The system antenna(s) used for this module must not exceed 7.18 dBi (GSM 850), 2.78 dBi (PCS 1900)

and 1.43 dBi (FDD IV) for mobile and fixed or mobile operating configurations.

• Users and installers must be provided with antenna installation instructions and transmitter

operating conditions for satisfying RF exposure compliance.

Manufacturers of mobile, fixed or portable devices incorporating this module are advised to clarify

any regulatory questions and to have their complete product tested and approved for FCC

compliance.

The FCC requires that you be notified that any changes or modifications made to the UC864-AWS-

AUTO module that are not expressly approved by Telit Communications S.p.A. may void your

authority to operate the equipment.

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18. Safety R

Safety RSafety R

Safety Recommendations

ecommendationsecommendations

ecommendations

Read carefully!

Be sure about that the use of this product is allowed in your country and in the environment

required. The use of this product may be dangerous and has to be avoided in the following

areas:

• Where it can interfere with other electronic devices in environments such as

hospitals, airports, aircrafts, etc.

• Where there is risk of explosion such as gasoline stations, oil refineries, etc.

It is responsibility of the user to enforce the country regulation and the specific environment

regulation.

Do not disassemble the product; any mark of tampering will compromise the warranty validity.

We recommend following the instructions of the hardware user guides for a correct wiring of

the product. The product has to be supplied with a stabilized voltage source and the wiring

has to be conforming to the security and fire prevention regulations.

The product has to be handled with care, avoiding any contact with the pins because

electrostatic discharges may damage the product itself. Same cautions have to be taken for

the SIM, checking carefully the instruction for its use. Do not insert or remove the SIM when

the product is in power saving mode.

The system integrator is responsible of the functioning of the final product; therefore, care

has to be taken to the external components of the module, as well as of any project or

installation issue, because the risk of disturbing the GSM network or external devices or

having impact on the security. Should there be any doubt, please refer to the technical

documentation and the regulations in force.

Every module has to be equipped with a proper antenna with specific characteristics. The

antenna has to be installed with care in order to avoid any interference with other electronic

devices and has to be installed with the guarantee of a minimum 20 cm distance from the

body. In case of this requirement cannot be satisfied, the system integrator has to assess the

final product against the SAR regulation.

The European Community provides some Directives for the electronic equipments introduced

on the market. All the relevant information are available on the European Community

website:

http://europa.eu.int/comm/enterprise/rtte/dir99-5.htm

The text of the Directive 99/05 regarding telecommunication equipments is available, while

the applicable Directives (Low Voltage and EMC) are available at:

http://europa.eu.int/comm/enterprise/rtte/dir99-5.htm

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19. Document Change Log

Document Change LogDocument Change Log

Document Change Log

Rev.0 2008/10/22 Initial release

Rev.1 2009/04/02 Updated with new HW design of solder tags, added info on Pull up/down

values on I/O lines, added soldering info

Updated ESD data

Rev.2 2009/06/11

Updated with new Module Drawings, updated ESD data, pinout.

Rev.3 2009/07/08 Updated Drawings of the module

Updated Turning ON/OFF

Updated Power supply : Consumption for GPRS/EDGE Class 12

Updated Audio section

Added Buzzer concept

Updated Application guide

Updated Packaging Tray dimensions

Rev.4 2009/10/29 Updated On Off timings

Rev.5 2009/11/09 Corrected Note on Chapter 4.2 (was related to E version and not to E-

AUTO)

Rev. 6 2010/05/06 Updated digital operating levels; added UC864-AWS-AUTO product

Updated GSM/WCDMA Antenna requirement

Updated 9 USB Port

Rev. 7 2010/07/02 Added section on Temperature Ranges

Rev. 8 2010/10/14 Conformity Assessment Issues section updated

Rev. 9 2010/10/25 Conformity Assessment Issues section updated

Rev. 10 2010/11/10 Section 7.1 and Conformity Assessment Issues updated

Rev. 11 2010/11/18 Section 7.1 and Conformity Assessment Issues updated

Telit Communications S p A UC864AWA GSM 850, E-GSM 900, DCS 1800, PCS 1900, FDD IV, 2G/3.5G module User Manual Users guide

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