Telit Communications S p A HE910NA Users Guide
PRODUCT
HE910
HE910-GA
HE910-D
HE910-EUR
HE910-EUD
HE910-EUG
HE910-NAR
HE910-NAD
HE910-NAG
HE910 Hardware User Guide
1vv0300925 Rev.18 – 15-06-2012
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HE910 Hardware User Guide
1vv0300925 Rev.18 – 15-06-2012
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.
All rights reserved.
© 2011, 2012 Telit Communications S.p.A.
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HE910 Hardware User Guide
1vv0300925 Rev.18 – 15-06-2012
1 INTRODUCTION ......................................................................................................................................................... 7
1.1 SCOPE ................................................................................................................................................................................ 7
1.2 AUDIENCE ........................................................................................................................................................................... 7
1.3 CONTACT INFORMATION, SUPPORT .......................................................................................................................................... 7
1.4 DOCUMENT ORGANIZATION ................................................................................................................................................... 8
1.5 TEXT CONVENTIONS .............................................................................................................................................................. 9
1.6 RELATED DOCUMENTS ........................................................................................................................................................... 9
1.7 DOCUMENT HISTORY .......................................................................................................................................................... 10
2 OVERVIEW .............................................................................................................................................................. 11
3 HE910 MODULE CONNECTIONS ............................................................................................................................... 12
3.1 PIN-OUT ......................................................................................................................................................................... 12
3.1.1 LGA Pads Layout (HE910 and HE910-GA) .............................................................................................................. 18
3.1.2 LGA Pads Layout (HE910-D) ................................................................................................................................... 19
3.1.3 LGA Pads Layout (HE910-EUx and HE910-NAx) ..................................................................................................... 20
3.1.4 LGA Pads Layout (HE910-EUG and HE910-NAG) .................................................................................................... 21
4 HARDWARE COMMANDS ........................................................................................................................................ 22
4.1 TURNING ON THE HE910 ................................................................................................................................................... 22
4.2 TURNING OFF THE HE910 .................................................................................................................................................. 27
4.3 HE910 UNCONDITIONAL SHUTDOWN .................................................................................................................................... 29
4.4 HE910 RESET .................................................................................................................................................................. 32
5 POWER SUPPLY ....................................................................................................................................................... 35
5.1 POWER SUPPLY REQUIREMENTS ............................................................................................................................................ 35
5.2 POWER CONSUMPTION ....................................................................................................................................................... 36
5.3 GENERAL DESIGN RULES ...................................................................................................................................................... 37
5.3.1 Electrical Design Guidelines ................................................................................................................................... 37
5.3.2 Thermal Design Guidelines ..................................................................................................................................... 41
5.3.3 Power Supply PCB layout Guidelines ...................................................................................................................... 42
6 GSM/WCDMA RADIO SECTION ............................................................................................................................... 43
6.1 HE910 PRODUCT VARIANTS ................................................................................................................................................ 43
6.2 TX OUTPUT POWER ............................................................................................................................................................ 43
6.3 SENSITIVITY ....................................................................................................................................................................... 44
6.4 GSM/WCDMA ANTENNA REQUIREMENTS ............................................................................................................................ 44
6.5 GSM/WCDMA - PCB LINE GUIDELINES ................................................................................................................................ 45
6.6 GSM/WCDMA ANTENNA - INSTALLATION GUIDELINES ........................................................................................................... 46
6.7 ANTENNA DIVERSITY REQUIREMENTS ..................................................................................................................................... 47
7 GPS RECEIVER .......................................................................................................................................................... 48
7.1 GPS PERFORMANCES .......................................................................................................................................................... 48
7.2 GPS SIGNALS PINOUT ......................................................................................................................................................... 49
7.3 RF FRONT END DESIGN ....................................................................................................................................................... 49
7.3.1 RF Signal Requirements .......................................................................................................................................... 49
7.3.2 GPS Antenna Polarization ...................................................................................................................................... 50
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HE910 Hardware User Guide
1vv0300925 Rev.18 – 15-06-2012
7.3.3 GPS Antenna Gain .................................................................................................................................................. 51
7.3.4 Active versus Passive Antenna ............................................................................................................................... 51
7.3.5 GPS Antenna - PCB Line Guidelines ........................................................................................................................ 52
7.3.6 RF Trace Losses....................................................................................................................................................... 52
7.3.7 Implications of the Pre-select SAW Filter ............................................................................................................... 53
7.3.8 External LNA Gain and Noise Figure....................................................................................................................... 53
7.3.9 Powering the External LNA (active antenna) ......................................................................................................... 53
7.3.10 External LNA Enable ............................................................................................................................................. 54
7.3.11 Shielding ............................................................................................................................................................... 55
7.3.12 GPS Antenna - Installation ................................................................................................................................... 55
8 LOGIC LEVEL SPECIFICATIONS .................................................................................................................................. 56
8.1 RESET SIGNAL .................................................................................................................................................................... 57
9 USB PORT ................................................................................................................................................................ 58
9.1 USB 2.0 HS ...................................................................................................................................................................... 58
10 SPI PORT ................................................................................................................................................................. 59
10.1 SPI CONNECTIONS ............................................................................................................................................................ 60
11 SERIAL PORTS .......................................................................................................................................................... 61
11.1 MODEM SERIAL PORT 1 (USIF0) ................................................................................................................................... 62
11.2 MODEM SERIAL PORT 2 (USIF1) ................................................................................................................................... 64
11.3 RS232 LEVEL TRANSLATION ................................................................................................................................................ 65
12 AUDIO SECTION OVERVIEW .................................................................................................................................... 67
12.1 ELECTRICAL CHARACTERISTICS ............................................................................................................................................. 67
12.1.1 CODEC Examples .................................................................................................................................................. 67
13 GENERAL PURPOSE I/O ........................................................................................................................................... 68
13.1 GPIO LOGIC LEVELS .......................................................................................................................................................... 69
13.2 USING A GPIO PAD AS INPUT ........................................................................................................................................... 70
13.3 USING A GPIO PAD AS OUTPUT ........................................................................................................................................ 70
13.4 INDICATION OF NETWORK SERVICE AVAILABILITY ..................................................................................................................... 71
13.5 RTC BYPASS OUT ............................................................................................................................................................. 72
13.6 EXTERNAL SIM HOLDER IMPLEMENTATION ........................................................................................................................... 72
13.7 VAUX POWER OUTPUT ..................................................................................................................................................... 72
13.8 ADC CONVERTER ............................................................................................................................................................. 73
13.8.1 Description ........................................................................................................................................................... 73
13.8.2 Using ADC Converter ............................................................................................................................................ 73
14 MOUNTING THE HE910 ON THE APPLICATION ........................................................................................................ 74
14.1 GENERAL ........................................................................................................................................................................ 74
14.2 MODULE FINISHING & DIMENSIONS ..................................................................................................................................... 74
14.3 RECOMMENDED FOOT PRINT FOR THE APPLICATION ................................................................................................................. 76
14.4 STENCIL .......................................................................................................................................................................... 77
14.5 PCB PAD DESIGN .............................................................................................................................................................. 77
14.6 PCB PAD DIMENSIONS ....................................................................................................................................................... 78
14.7 SOLDER PASTE .................................................................................................................................................................. 80
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HE910 Hardware User Guide
1vv0300925 Rev.18 – 15-06-2012
14.7.1 HE910 Solder reflow ............................................................................................................................................. 80
14.8 PACKING SYSTEM .............................................................................................................................................................. 82
14.9 MOISTURE SENSITIVITY ...................................................................................................................................................... 84
15 SAFETY RECOMMANDATIONS ................................................................................................................................. 85
16 CONFORMITY ASSESSMENT ISSUES ......................................................................................................................... 86
16.1 1999/5/EC DIRECTIVE ..................................................................................................................................................... 86
16.2 FCC/IC REGULATORY NOTICES ............................................................................................................................................ 90
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HE910 Hardware User Guide
1vv0300925 Rev.18 – 15-06-2012
The aim of this document is the description of some hardware solutions useful for developing a
product with the Telit HE910 module.
This document is intended for Telit customers, who are integrators, about to implement their
applications using our HE910 modules.
For general contact, technical support, to report documentation errors and to order manuals,
contact Telit’s Technical Support Center (TTSC) at:
TS-EMEA@telit.com
TS-NORTHAMERICA@telit.com
TS-LATINAMERICA@telit.com
TS-APAC@telit.com
Alternatively, use:
http://www.telit.com/en/products/technical-support-center/contact.php
For detailed information about where you can buy the Telit modules or for recommendations on
accessories and components visit:
http://www.telit.com
To register for product news and announcements or for product questions contact Telit’s
Technical Support Center (TTSC).
Our aim is to make this guide as helpful as possible. Keep us informed of your comments and
suggestions for improvements.
Telit appreciates feedback from the users of our information.
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HE910 Hardware User Guide
1vv0300925 Rev.18 – 15-06-2012
This document contains the following chapters:
Chapter 1: “Introduction” provides a scope for this document, target audience, contact and
support information, and text conventions.
Chapter 2: “Overview” provides an overview of the document.
Chapter3: “HE910 Module Connections” deals with the pin out configuration and layout.
Chapter 4: “Hardware Commands” How to operate on the module via hardware.
Chapter 5: “Power supply” Power supply requirements and general design rules.
Chapter 6: “GSM/WCDMA Radio” The antenna connection and board layout design are the
most important parts in the full product design.
Chapter 7: “GPS Receiver” This section describes the GPS receiver.
Chapter 8: “Logic Level specifications” Specific values adopted in the implementation of logic
levels for this module.
Chapter 9: “USB Port” The USB port on the Telit HE910 is the core of the interface between the
module and OEM hardware
Chapter 10: “SPI port” Refers to the SPI port of the Telit HE910
Chapter 11: “Serial ports” Refers to the serial ports of the Telit HE910
Chapter 12: “Audio Section overview” Refers to the audio blocks of the Base Band Chip of the
HE910 Telit Modules.
Chapter 13: “General Purpose I/O” How the general purpose I/O pads can be configured.
Chapter 14: “Mounting the HE910 on the application board” Mechanical dimensions and
recommendations on how to mount the module on the user’s board.
Chapter 15: “Safety Recommendations” Information related to the Safety topics.
Chapter 16: “Conformity Assessment Issues” Information related to the Conformity
Assessments.
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HE910 Hardware User Guide
1vv0300925 Rev.18 – 15-06-2012
Danger – This information MUST be followed or catastrophic equipment failure or bodily
injury may occur.
Caution or Warning – Alerts the user to important points about integrating the module, if
these points are not followed, the module and end user equipment may fail or malfunction.
Tip or Information – Provides advice and suggestions that may be useful when integrating
the module.
All dates are in ISO 8601 format, i.e. YYYY-MM-DD.
HE910 Digital Voice Interface Application Note 80000NT10050A
HE910 SPI Port Application Note 80000NT10053A
HE910 Product description 80378ST10085a
SIM Holder Design Guides 80000NT10001a
AT Commands Reference Guide 80378ST10091A
Telit EVK2 User Guide 1vv0300704
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 9 of 91
RReevviissiioonn
DDaattee
CChhaannggeess
ISSUE#0
2011-03-31
Preliminary Version
ISSUE#1
2011-05-19
Updated pinout on UART1
ISSUE#2
2011-05-25
Update chapter 13
ISSUE#3
2011-07-25
Added DVI app note references; chapter 4.1
ISSUE#4
2011-07-29
Updated audio, on_off/reset and digital sections
ISSUE#5
2011-10-18
Added STAT_LED info, Updated SPI pinout
ISSUE#6
2011-12-22
Power supply extended to 3.3 V
ISSUE#7
2012-01-16
Added HE910-GA and –D; added Conformity assessment chapter
ISSUE#8
2012-02-03
Chapter 5.1 updated
ISSUE#9
2012-02-07
Chapter 4.2 updated
ISSUE#10
2012-03-16
Added ADC in pinout description; added GPS specification; updated Chapter
13 and 14;
ISSUE#11
2012-03-26
Chapter 2.1, 2.1.2, 3.3, 5.4, 14.9
ISSUE#12
2012-03-27
Added HE910-EU and NA products
ISSUE#13
2012-03-28
Updated paragraph 14.9
ISSUE#14
2012-05-08
Added EUR, EUD, NAR, NAD variants; added Sensitivity and TX Power
Class specifications. Updated par 14.7.1 and 14.3
ISSUE#15
2012-05-30
Updated Chapter 16.2; 7.3.8
ISSUE#16
2012-06-06
Pin R13 renamed as HW_SHUTDOWN*, Pin P11 adeed in pinout as RESET*
ISSUE#17
2012-06-14
Updated RTT&E info on HE910-NAG, NAR, NAD
ISSUE#18
2012-06-15
Updated RTT&E info on HE910-NAG, NAR, NAD ; updated par 3.1;
HE910 Hardware User Guide
1vv0300925 Rev.18 – 15-06-2012
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 10 of 91
HE910
HE910 Hardware User Guide
1vv0300925 Rev.18 – 15-06-2012
The aim of this document is the description of some hardware solutions useful for developing a
product with the Telit HE910 module.
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 shall be considered as mandatory, while the suggested hardware configurations shall not
be considered mandatory, instead the information given shall be used as a guide and a starting
point for properly developing your product with the Telit HE910 module. For further hardware
details that may not be explained in this document refer to the Telit HE910 Product Description
document where all the hardware information is reported.
NOTICE:
(EN) The integration of the GSM/GPRS/WCDMA HE910 cellular module within user application shall
be done according to the design rules described in this manual.
(IT) L’integrazione del modulo cellulare GSM/GPRS/WCDMA HE910 all’interno dell’applicazione
dell’utente dovrà rispettare le indicazioni progettuali descritte in questo manuale.
(DE) Die Integration des HE910 GSM/GPRS/WCDMA Mobilfunk-Moduls in ein Gerät muß gemäß der
in diesem Dokument beschriebenen Kunstruktionsregeln erfolgen.
(SL) Integracija GSM/GPRS/WCDMA HE910 modula v uporabniški aplikaciji bo morala upoštevati
projektna navodila, opisana v tem priročniku.
(SP) La utilización del modulo GSM/GPRS/WCDMA HE910 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/WCDMA HE910 dans l’application de l’utilisateur
sera faite selon les règles de conception décrites dans ce manuel.
(HE)
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.
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 11 of 91
PAD
Signal
I/O
Function
Type
COMMENT
USB HS 2.0 COMMUNICATION PORT
B15
USB_D+
I/O
USB differential Data (+)
C15
USB_D-
I/O
USB differential Data (-)
A13
VUSB
I
Power sense for the internal USB
transceiver.
Asynchronous Serial Port (USIF0) - Prog. / Data + HW Flow Control
N15
C103/TXD
I
Serial data input from DTE
CMOS 1.8V
M15
C104/RXD
O
Serial data output to DTE
CMOS 1.8V
M14
C108/DTR
I
Input for (DTR) from DTE
CMOS 1.8V
L14
C105/RTS
I
Input for Request to send signal
(RTS) from DTE
CMOS 1.8V
P15
C106/CTS
O
Output for Clear to Send signal
(CTS) to DTE
CMOS 1.8V
N14
C109/DCD
O
Output for (DCD) to DTE
CMOS 1.8V
P14
C107/DSR
O
Output for (DSR) to DTE
CMOS 1.8V
R14
C125/RING
O
Output for Ring (RI) to DTE
CMOS 1.8V
Asynchronous Auxiliary Serial Port (USIF1)
D15
TX_AUX
O
Auxiliary UART (TX Data to DTE)
CMOS 1.8V
E15
RX_AUX
I
Auxiliary UART (RX Data from
DTE)
CMOS 1.8V
D13
VDD_IO1
I
VDD_IO1 Input
To be connected to E13
E13
1V8_SEL
O
1V8 SEL for VDD_IO1
To be connected to D13
SIM card interface
A6
SIMCLK
O
External SIM signal – Clock
1.8 / 3V
A7
SIMRST
O
External SIM signal – Reset
1.8 / 3V
A5
SIMIO
I/O
External SIM signal – Data I/O
1.8 / 3V
A4
SIMIN
I
External SIM signal – Presence
(active low)
CMOS 1.8
A3
SIMVCC
-
External SIM signal – Power supply
for the SIM
1.8 / 3V
Digital Voice Interface (DVI)
B9
DVI_WA0
I/O
Digital Audio Interface (WA0)
CMOS 1.8V
B6
DVI_RX
I/O
Digital Audio Interface (RX)
CMOS 1.8V
B7
DVI_TX
I/O
Digital Audio Interface (TX)
CMOS 1.8V
B8
DVI_CLK
I/O
Digital Audio Interface (CLK)
CMOS 1.8V
SPI
D15
SPI_MOSI
I
SPI MOSI
CMOS 1.8V
Shared with TX_AUX
HE910 Hardware User Guide
1vv0300925 Rev.18 – 15-06-2012
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E15
SPI_MISO
O
SPI_MISO
CMOS 1.8V
Shared with RX_AUX
F15
SPI_CLK
I
SPI Clock
CMOS 1.8V
H15
SPI_MRDY
I
SPI_MRDY
CMOS 1.8V
J15
SPI_SRDY
O
SPI_SRDY
CMOS 1.8V
DIGITAL IO
C8
GPIO_01
I/O
GPIO_01 /STAT LED
CMOS 1.8V
Alternate Function STAT LED
C9
GPIO_02
I/O
GPIO_02
CMOS 1.8V
C10
GPIO_03
I/O
GPIO_03
CMOS 1.8V
C11
GPIO_04
I/O
GPIO_04
CMOS 1.8V
B14
GPIO_05
I/O
GPIO_05
CMOS 1.8V
C12
GPIO_06
I/O
GPIO_06
CMOS 1.8V
C13
GPIO_07
I/O
GPIO_07
CMOS 1.8V
K15
GPIO_08
I/O
GPIO_08
CMOS 1.8V
L15
GPIO_09
I/O
GPIO_09
CMOS 1.8V
G15
GPIO_10
I/O
GPIO_10
CMOS 1.8V
ADC
B1
ADC_IN1
AI
Analog / Digital converter input
A/D
Accepted values 0 to 1.2V DC
RF SECTION
K1
ANTENNA
I/O
GSM/EDGE/UMTS Antenna
(50 ohm)
RF
F1
ANT_DIV
I
Antenna Diversity Input
(50 ohm)
RF
See NOTE 1
GPS SECTION (see NOTE1)
R9
ANT_GPS
I
GPS Antenna (50 ohm)
RF
R7
GPS_LNA_EN
O
Output enable for External LNA
supply
CMOS 1.8V
Miscellaneous Functions
R13
HW_SHUTDOWN*
I
HW Unconditional Shutdown
CMOS 1.8V
Active low
P11
RESET*
I
HW Unconditional Restart
CMOS 1.8V
Active low
R12
ON_OFF*
I
Input command for power ON
CMOS 1.8V
Active low
C14
VRTC
I
VRTC Backup capacitor
Power
backup for the embedded RTC
supply
R11
VAUX/PWRMON
O
Supply Output for external
accessories / Power ON Monitor
1.8V
Power Supply
M1
VBATT
-
Main power supply (Baseband)
Power
M2
VBATT
-
Main power supply (Baseband)
Power
N1
VBATT_PA
-
Main power supply (Radio PA)
Power
N2
VBATT_PA
-
Main power supply (Radio PA)
Power
P1
VBATT_PA
-
Main power supply (Radio PA)
Power
P2
VBATT_PA
-
Main power supply (Radio PA)
Power
E1
GND - Ground
Power
G1
GND - Ground
Power
HE910 Hardware User Guide
1vv0300925 Rev.18 – 15-06-2012
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H1
GND - Ground
Power
J1
GND - Ground
Power
L1
GND - Ground
Power
A2
GND - Ground
Power
E2
GND - Ground
Power
F2
GND - Ground
Power
G2
GND - Ground
Power
H2
GND - Ground
Power
J2
GND - Ground
Power
K2
GND - Ground
Power
L2
GND - Ground
Power
R2
GND - Ground
Power
M3
GND - Ground
Power
N3
GND - Ground
Power
P3
GND - Ground
Power
R3
GND - Ground
Power
D4
GND - Ground
Power
M4
GND - Ground
Power
N4
GND - Ground
Power
P4
GND - Ground
Power
R4
GND - Ground
Power
N5
GND - Ground
Power
P5
GND - Ground
Power
R5
GND - Ground
Power
N6
GND - Ground
Power
P6
GND - Ground
Power
R6
GND - Ground
Power
P8
GND - Ground
Power
R8
GND - Ground
Power
P9
GND - Ground
Power
P10
GND - Ground
Power
R10
GND - Ground
Power
M12
GND - Ground
Power
B13
GND - Ground
Power
P13
GND - Ground
Power
E14
GND - Ground
Power
RESERVED
C1
RESERVED
-
RESERVED
D1
RESERVED
-
RESERVED
B2
RESERVED
-
RESERVED
C2
RESERVED
-
RESERVED
HE910 Hardware User Guide
1vv0300925 Rev.18 – 15-06-2012
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D2
RESERVED
-
RESERVED
B3
RESERVED
-
RESERVED
C3
RESERVED
-
RESERVED
D3
RESERVED
-
RESERVED
E3
RESERVED
-
RESERVED
F3
RESERVED
-
RESERVED
G3
RESERVED
-
RESERVED
H3
RESERVED
-
RESERVED
J3
RESERVED
-
RESERVED
K3
RESERVED
-
RESERVED
L3
RESERVED
-
RESERVED
B4
RESERVED
-
RESERVED
C4
RESERVED
-
RESERVED
B5
RESERVED
-
RESERVED
C5
RESERVED
-
RESERVED
C6
RESERVED
-
RESERVED
C7
RESERVED
-
RESERVED
N7
RESERVED
-
RESERVED
P7
RESERVED
-
RESERVED
N8
RESERVED
-
RESERVED
N9
RESERVED
-
RESERVED
A10
RESERVED
-
RESERVED
N10
RESERVED
-
RESERVED
N11
RESERVED
-
RESERVED
P11
RESERVED
-
RESERVED
B12
RESERVED
-
RESERVED
D12
RESERVED
-
RESERVED
N12
RESERVED
-
RESERVED
P12
RESERVED
-
RESERVED
F14
RESERVED
-
RESERVED
G14
RESERVED
-
RESERVED
H14
RESERVED
-
RESERVED
J14
RESERVED
-
RESERVED
K14
RESERVED
-
RESERVED
N13
RESERVED
-
RESERVED
L13
RESERVED
-
RESERVED
J13
RESERVED
-
RESERVED
M13
RESERVED
-
RESERVED
K13
RESERVED
-
RESERVED
H13
RESERVED
-
RESERVED
G13
RESERVED
-
RESERVED
F13
RESERVED
-
RESERVED
HE910 Hardware User Guide
1vv0300925 Rev.18 – 15-06-2012
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 15 of 91
A11
RESERVED
-
RESERVED
A12
RESERVED
-
RESERVED
B11
RESERVED
-
RESERVED
B10
RESERVED
-
RESERVED
A9
RESERVED
-
RESERVED
A8
RESERVED
-
RESERVED
D14
RESERVED
-
RESERVED
A14
RESERVED
-
RESERVED
Product
GPS
Antenna
Diversity
Notes
HE910
YES
YES
HE910-D
NO
YES
Reserved Pads: R7, R9
HE910-GA
YES
YES
HE910-EUR
NO
NO
Reserved Pads:,F1, R7, R9
HE910-EUD
NO
NO
Reserved Pads:,F1, R7, R9
HE910-EUG
YES
NO
Reserved Pads: F1
HE910-NAR
NO
NO
Reserved Pads: F1, R7, R9
HE910-NAD
NO
NO
Reserved Pads: F1, R7, R9
HE910-NAG
YES
NO
Reserved Pads: F1
HE910 Hardware User Guide
1vv0300925 Rev.18 – 15-06-2012
WARNING:
Reserved pins must not be connected.
NOTE 1:
The following table is listing the main Pinout differences between the HE910 variants
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 16 of 91
PAD
signal
M1,M2,N1,N2,P1,P2
VBATT & VBATT_PA
E1,G1,H1,J1,L1,A2,E2,F2,G2,H2,
J2,K2,L2,R2,M3,N3,P3,R3,D4,M4,
N4,P4,R4,N5,P5,R5,N6,P6,R6,P8,
R8,P9,P10,R10,M12,B13,P13,E14
GND
R12
ON/OFF*
R13
HW_SHUTDOWN*
B15
USB_D+
C15
USB_D-
A13
VUSB
N15
C103/TXD
M15
C104/RXD
L14
C105/RTS
P15
C106/CTS
D15
TXD_AUX
E15
RXD_AUX
D13
VDD_IO1
E13
1V8_SEL
K1
MAIN ANTENNA
F1
ANT_DIV (if supported by the product)
R9
ANT_GPS (if supported by the product)
HE910 Hardware User Guide
1vv0300925 Rev.18 – 15-06-2012
If not used, almost all pins should be left disconnected. The only exceptions are the following
pins:
RTS pin should be connected to the GND (on the module side) if flow control is not used.
The above pins are also necessary to debug the application when the module is assembled on it.
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 17 of 91
A B C D E F
G H J K L M N P R
1 ADC_IN1
RES
RES
GND
ANT_DIV
GND
GND
GND
ANT
GND
VBATT
VBATT_
PA
VBATT_
PA
2
GND
RES
RES
RES
GND
GND
GND
GND
GND
GND
GND
VBATT
VBATT_
PA
VBATT_
PA
GND
3
SIMVC
C
RES
RES
RES
RES
RES
RES
RES
RES
RES
RES
GND
GND
GND
GND
4
SIMIN
RES
RES
GND GND
GND
GND
GND
5
SIMIO
RES
RES GND
GND
GND
6
SIMCLK
DVI_RX
RES GND
GND
GND
7
SIMRS
T
DVI_TX
RES RES
RES
GPS_LN
A_EN
8
RES
DVI_CLK
GPIO_01 RES
GND
GND
9
RES
DVI_WA
0
GPIO_02 RES
GND
ANT_GP
S
10
RES
RES
GPIO_03 RES
GND
GND
11
RES
RES
GPIO_04 RES
RESET*
VAUX/P
WRMON
12
RES
RES
GPIO_06
RES GND
RES
RES
ON_OFF
*
13
VUSB
GND
GPIO_07
VDD_IO
1
1V8_SEL
RES
RES
RES
RES
RES
RES
RES
RES
GND
HW_SH
UTDOW
N*
14
RES
GPIO_05
VRTC
RES
GND
RES
RES
RES
RES
RES
C105/RTS C108/DT
R
C109/DCD C107/DSR C125/RI
NG
15 USB_D+
USB_D-
TX AUX
RX AUX
SPI_CLK
GPIO_10
SPI_MR
DY
SPI_SR
DY
GPIO_08
GPIO_09
C104/RX
D
C103/TXD C106/CT
S
HE910 Hardware User Guide
1vv0300925 Rev.18 – 15-06-2012
NOTE:
The pin defined as RES has to be considered RESERVED and not connected on any pin in the
application.
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 18 of 91
A B C D E F
G H J K L M N P R
1 ADC_IN1
RES
RES
GND
ANT_DIV
GND
GND
GND
ANT
GND
VBATT
VBATT_
PA
VBATT_
PA
2
GND
RES
RES
RES
GND
GND
GND
GND
GND
GND
GND
VBATT
VBATT_
PA
VBATT_
PA
GND
3
SIMVC
C
RES
RES
RES
RES
RES
RES
RES
RES
RES
RES
GND
GND
GND
GND
4
SIMIN
RES
RES
GND GND
GND
GND
GND
5
SIMIO
RES
RES GND
GND
GND
6
SIMCLK
DVI_RX
RES GND
GND
GND
7
SIMRS
T
DVI_TX
RES RES
RES
RES
8
RES
DVI_CLK
GPIO_01 RES
GND
GND
9
RES
DVI_WA
0
GPIO_02 RES
GND
RES
10
RES
RES
GPIO_03 RES
GND
GND
11
RES
RES
GPIO_04 RES
RESET*
VAUX/P
WRMON
12
RES
RES
GPIO_06
RES GND
RES
RES
ON_OFF
*
13
VUSB
GND
GPIO_07
VDD_IO
1
1V8_SEL
RES
RES
RES
RES
RES
RES
RES
RES
GND
HW_SH
UTDOW
N*
14
RES
GPIO_05
VRTC
RES
GND
RES
RES
RES
RES
RES
C105/RTS C108/DT
R
C109/DCD C107/DSR C125/RI
NG
15 USB_D+
USB_D-
TX AUX
RX AUX
SPI_CLK
GPIO_10
SPI_MR
DY
SPI_SR
DY
GPIO_08
GPIO_09
C104/RX
D
C103/TXD C106/CT
S
HE910 Hardware User Guide
1vv0300925 Rev.18 – 15-06-2012
NOTE:
The pin defined as RES has to be considered RESERVED and not connected on any pin in the
application.
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 19 of 91
A B C D E F
G H J K L M N P R
1 ADC_IN1
RES
RES
GND
RES
GND
GND
GND
ANT
GND
VBATT
VBATT_
PA
VBATT_
PA
2
GND
RES
RES
RES
GND
GND
GND
GND
GND
GND
GND
VBATT
VBATT_
PA
VBATT_
PA
GND
3
SIMVC
C
RES
RES
RES
RES
RES
RES
RES
RES
RES
RES
GND
GND
GND
GND
4
SIMIN
RES
RES
GND GND
GND
GND
GND
5
SIMIO
RES
RES GND
GND
GND
6
SIMCLK
DVI_RX
RES GND
GND
GND
7
SIMRS
T
DVI_TX
RES RES
RES
RES
8
RES
DVI_CLK
GPIO_01 RES
GND
GND
9
RES
DVI_WA
0
GPIO_02 RES
GND
RES
10
RES
RES
GPIO_03 RES
GND
GND
11
RES
RES
GPIO_04 RES
RESET*
VAUX/P
WRMON
12
RES
RES
GPIO_06
RES GND
RES
RES
ON_OFF
*
13
VUSB
GND
GPIO_07
VDD_IO
1
1V8_SEL
RES
RES
RES
RES
RES
RES
RES
RES
GND
HW_SH
UTDOW
N*
14
RES
GPIO_05
VRTC
RES
GND
RES
RES
RES
RES
RES
C105/RTS C108/DT
R
C109/DCD C107/DSR C125/RI
NG
15 USB_D+
USB_D-
TX AUX
RX AUX
SPI_CLK
GPIO_10
SPI_MR
DY
SPI_SR
DY
GPIO_08
GPIO_09
C104/RX
D
C103/TXD C106/CT
S
HE910 Hardware User Guide
1vv0300925 Rev.18 – 15-06-2012
NOTE:
The pin defined as RES has to be considered RESERVED and not connected on any pin in the
application.
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 20 of 91
A B C D E F
G H J K L M N P R
1 ADC_IN1
RES
RES
GND
RES
GND
GND
GND
ANT
GND
VBATT
VBATT_
PA
VBATT_
PA
2
GND
RES
RES
RES
GND
GND
GND
GND
GND
GND
GND
VBATT
VBATT_
PA
VBATT_
PA
GND
3
SIMVC
C
RES
RES
RES
RES
RES
RES
RES
RES
RES
RES
GND
GND
GND
GND
4
SIMIN
RES
RES
GND GND
GND
GND
GND
5
SIMIO
RES
RES GND
GND
GND
6
SIMCLK
DVI_RX
RES GND
GND
GND
7
SIMRS
T
DVI_TX
RES RES
RES
GPS_LN
A_EN
8
RES
DVI_CLK
GPIO_01 RES
GND
GND
9
RES
DVI_WA
0
GPIO_02 RES
GND
ANT_GP
S
10
RES
RES
GPIO_03 RES
GND
GND
11
RES
RES
GPIO_04 RES
RESET*
VAUX/P
WRMON
12
RES
RES
GPIO_06
RES GND
RES
RES
ON_OFF
*
13
VUSB
GND
GPIO_07
VDD_IO
1
1V8_SEL
RES
RES
RES
RES
RES
RES
RES
RES
GND
HW_SH
UTDOW
N*
14
RES
GPIO_05
VRTC
RES
GND
RES
RES
RES
RES
RES
C105/RTS C108/DT
R
C109/DCD C107/DSR C125/RI
NG
15 USB_D+
USB_D-
TX AUX
RX AUX
SPI_CLK
GPIO_10
SPI_MR
DY
SPI_SR
DY
GPIO_08
GPIO_09
C104/RX
D
C103/TXD C106/CT
S
HE910 Hardware User Guide
1vv0300925 Rev.18 – 15-06-2012
NOTE:
The pin defined as RES has to be considered RESERVED and not connected on any pin in the
application.
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 21 of 91
HE910 Hardware User Guide
1vv0300925 Rev.18 – 15-06-2012
To turn on the HE910 the pad ON_OFF* must be tied low for at least 5 seconds 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:
NOTE:
Don't 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 HE910 power regulator and improper power
on/off of the module. The line ON_OFF* must be connected only in open collector or open
drain configuration.
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 22 of 91
HE910 Hardware User Guide
1vv0300925 Rev.18 – 15-06-2012
NOTE:
In this document all the lines that are inverted, hence have active low signals are labelled with a
name that ends with”#",”*” or with a bar over the name.
TIP:
To check if the device has powered on, the hardware line PWRMON should be monitored.
NOTE:
It is mandatory to avoid sending data to the serial ports during the first 200ms of the module
start-up.
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 23 of 91
Modem ON Proc.
Y
Y
HW unconditional
SHUTDOWN
AT init sequence.
Start AT CMD.
N
PWMON = ON?
PWMON = ON?
AT answer in 1Sec ?
N
Y
N
Delay 1s
DELAY= 300mSec
ON_OFF = LOW
Delay = 5 Sec
ON_OFF = HIGH
Enter AT<CR>
HE910 Hardware User Guide
1vv0300925 Rev.18 – 15-06-2012
A flow chart showing the proper turn on procedure is displayed below:
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 24 of 91
NOTE:
In order to avoid a back powering effect it is recommended to avoid having any HIGH logic
level signal applied to the digital pins of the HE910 when the module is powered off or during
an ON/OFF transition.
AT answer in
1Sec ?
Y
N
Start AT CMD.
DELAY= 300mSec
Enter AT<CR>
AT init sequence.
Modem ON Proc.
HW unconditional
SHUTDOWN
HE910 Hardware User Guide
1vv0300925 Rev.18 – 15-06-2012
A flow chart showing the AT command managing procedure is displayed below:
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 25 of 91
HE910 Hardware User Guide
1vv0300925 Rev.18 – 15-06-2012
For example:
1- Let's assume you need to drive the ON# pad with a totem pole output of a +3/5 V
microcontroller (uP_OUT1):
2- Let's assume you need to drive the ON# pad directly with an ON/OFF button:
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 26 of 91
HE910 Hardware User Guide
1vv0300925 Rev.18 – 15-06-2012
Turning off of the device can be done in two ways:
via AT command (see HE910 Software User Guide, AT#SHDN)
by tying low pin ON_OFF*
Either ways, the device issues a detach request to network informing that the device will not be
reachable any more.
To turn OFF the HE910 the pad ON_OFF* must be tied low for at least 2 seconds and then
released.
TIP:
To check if the device has been powered off, the hardware line PWRMON must be monitored.
The device is powered off when PWRMON goes low.
NOTE:
In order to avoid a back powering effect it is recommended to avoid having any HIGH logic
level signal applied to the digital pins of the HE910 when the module is powered off or during
an ON/OFF transition.
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 27 of 91
Modem OFF Proc.
N
Y
HW unconditional
SHUTDOWN
N
PWMON = ON?
PWMON = ON?
Y
Delay 15s
ON_OFF = LOW
Delay = 2 Sec
ON_OFF = HIGH
Modem ON Proc.
PWMON = ON?
N
Y
HE910 Hardware User Guide
1vv0300925 Rev.18 – 15-06-2012
The following flow chart shows the proper turn off procedure:
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 28 of 91
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