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HE863 Family

Hardware User Guide

1vv0300891 Rev.6 – 2011-04-14

Summary of content (92 pages)

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HE863 Family Hardware User Guide 1vv0300891 Rev.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 APPLICABLE PRODUCT PRODUCT HE863-EUD HE863-EUR HE863-EUG HE863-NAD HE863-NAR HE863-NAG HE863-AUD HE863-AUG Reproduction forbidden without Telit Communications S.p.A’s. written authorization - All Rights Reserved.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 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.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 Contents 1. INTRODUCTION ................................................................................................................................................. 6 1.1. 1.2. 1.3. 1.4. 1.5. 1.6. 1.7. 2. SCOPE ................................................................................................................................................................. 6 AUDIENCE .............................................
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 9.1. 9.2. 10. MODEM SERIAL PORT ....................................................................................................................................... 61 RS232 LEVEL TRANSLATION ............................................................................................................................ 63 USB PORT ................................................................................................................
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 1. 1.1. Introduction Scope The aim of this document is the description of some hardware solutions useful for developing a product with the Telit HE863-EUD/NAD/AUD/EUG/NAG/AUG/EUR/NAR module. All the features and solutions detailed are applicable to all HE863 family, whereas “family” is intended the modules listed in the applicability table. When a specific feature is applicable to a specific product, it will be clearly highlighted. 1.2.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 1.4. Document Organization 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. Chapter 3: “HE863 Family Mechanical Dimensions” deals with the layout.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 Chapter 16 “Antenna detection design guide” Chapter 17: “Conformity Assessments Issues” provides some fundamental hints about the conformity assessment that the final application might need. Chapter 18: “Safety Recommendations” provides some safety recommendations that must be followed by the customer in the design of the application that makes use of the HE863 Family. 1.5.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 1.7. Revision Rev.0 Rev.1 Rev.2 Rev.3 Rev.4 Rev.5 Document History Date Changes 2010-07-23 First issue 2010-07-27 Updated 4 HE863-EUD Modules Connections Updated 4.1 PIN-OUT Updated 5.2 Initialization and Activation state(TBD) Updated 5.3 Turning off the HE863-EUD Updated 5.4 Summary of Turning ON and OFF the HE863EUD(TBD) Updated 8.1 Reset Signal Updated 14 SIM holder design guides Removed 17.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 Rev.6 Updated 5.2 Initialization and Activation state Updated 5.3 Turning OFF the HE863 Added 5.4 Summary of Turning ON and OFF Updated 7.2 GSM/WCDMA Antenna – PCB line Guidelines Updated 7.3 GSM/WCDMA Antenna – Installation Guidelines Updated 7.5 GPS Antenna – PCB line Guidelines(HE863EUG/NAG/AUG only) Updated 15.2 SIM interface Updated 17 Conformity Assessment Issues 2011-04-11 Updated 11.2.1 Input Lines (MT and HF)Characteristics Updated 11.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 2. Overview The aim of this document is the description of some hardware solutions useful for developing a product with the Telit HE863 Family module. In this document all the basic functions of a M2M device 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.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 2.1.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 ITEM Air interfac e Size FEATURE HE863-AUD HE863-AUG Dual-band UMTS/HSPA 2100/850 Quad-Band GSM850/900 /1800/1900 Data only Dual-band UMTS/HSPA 2100/850 Quad-Band GSM850/900 /1800/1900 Standalone GPS 41.4(L)X31.4(W)X2.9(T) Data Service HSPA UL 5.8Mbps, DL 7.2Mbps EDGE UL 118kbps, DL 236.8Kbps, GPRS UL 42.8kbps, DL 85.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 3. HE863 Family Mechanical Dimensions The Telit HE863 Family module overall dimensions are: • Length: 41.4 mm • Width: 31.4 mm • Thickness: 2.9 mm Reproduction forbidden without Telit Communications S.p.A’s. written authorization - All Rights Reserved.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 4. HE863 Family Module Connections The HE863 Family features a 189 Balls Grid Array: in the following sections a description of the available signals and their position in the balls layout is presented. 4.1. Ball HE863-EUD/NAD/AUD PIN-OUT Signal I/O Function Internal Pull up Type SIM card interface H11 SIMCLK O External SIM signal – Clock 1.8 / 3V G12 SIMRST O External SIM signal – Reset 1.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 Ball Signal I/O Function Internal Pull up Type K4 C106/CTS O Output for Clear to send signal (CTS) to DTE CMOS 1.8V K3 C105/RTS I Input for Request to send signal (RTS) from DTE CMOS 1.8V J4 C104/RXD O Serial data output to DTE CMOS 1.8V J3 C103/TXD I Serial data input (TXD) from DTE CMOS 1.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 Ball Signal I/O Function Internal Pull up Type R6 WAKEUP(TBD) O Wake up signal to external host system CMOS 1.8V P6 SLEEP(TBD) I Input for entering sleep mode CMOS 1.8V S6 CALL_KEY(TBD ) I Input for make/answer a call (toggle command) CMOS 1.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 Ball Signal F10 TGPIO_05 I/O Function Internal Pull up Type I/O Configurable GPIO #05 CMOS 1.8V TGPIO_04 I/O Configurable GPIO #04 CMOS 1.8V K11 TGPIO_03 I/O Configurable GPIO #03 CMOS 1.8V TGPIO_02 I/O Configurable GPIO #02 CMOS 1.8V J11 TGPIO_01 I/O Configurable GPIO #01 CMOS 1.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 NOTE: RESERVED Pins must be UNCONNECTED to any circuit in a host system but be SOLDERED. NOTE: If not used, almost all pins must be left disconnected. Reproduction forbidden without Telit Communications S.p.A’s. written authorization - All Rights Reserved.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 4.2.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 Ball G11 Signal USB_SIM_D(TBD) I/O Function I/O USB SIM data (-), TBD Internal Pull up Type 1.8V/3.0V Trace N4 TX_TRACE O Tx data for diagnostic monitor CMOS 1.8V N3 RX_TRACE I Rx data for diagnostic monitor CMOS 1.8V Prog. / Data + HW Flow Control Output for Ring indicator signal (RI) to DTE CMOS 1.8V O Output for Data set ready signal (DSR) to DTE CMOS 1.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 Ball Signal I/O Function Internal Pull up Type R5 ADC_IN2 AI Analog/Digital converter input 2/GPS ANT voltage detection Analog R4 ADC_IN1 AI Analog/Digital converter input 1/GPS ANT voltage detection Analog Miscellaneous Functions G5 RESET* C9 VRTC_2V3 B11 STAT_LED G4 ON_OFF* D10 PWRMON I Reset input Pull up 2.3V AO VRTC Backup capacitor Power O Status indicator LED CMOS 1.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 Ball Signal I/O Function Internal Pull up Type P10 TGPIO_19 I/O Configurable GPIO #19 CMOS 1.8V N10 TGPIO_16 I/O Configurable GPIO #16 CMOS 1.8V M12 TGPIO_15 I/O Configurable GPIO #15 CMOS 1.8V P11 TGPIO_14 I/O Configurable GPIO #14 CMOS 1.8V N11 TGPIO_13 I/O Configurable GPIO #13 CMOS 1.8V L12 TGPIO_12 I/O Configurable GPIO #12 CMOS 1.8V P12 TGPIO_11 I/O Configurable GPIO #11 CMOS 1.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 Ball Signal I/O Function RESERVED 9 pins reserved (G7,E7,D7,D8,E8,F8,G8,D11,F7) RESERVED 6 pins reserved (C5,B8,C7,C8,B7,C6) RESERVED 17 pins reserved (A7,A8,C12,J9,A1,A6,A9,A10,A11, B1,B6,B12,D12,H4,P4,S1,S12) Internal Pull up Type NOTE: RESERVED Pins must be UNCONNECTED but be soldered. NOTE: If not used, almost all pins must be left disconnected. Reproduction forbidden without Telit Communications S.p.A’s.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 4.3.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 Ball Signal I/O Function Internal Pull up Type (TBD) Trace N4 TX_TRACE O Tx data for diagnostic monitor CMOS 1.8V N3 RX_TRACE I Rx data for diagnostic monitor CMOS 1.8V Prog. / Data + HW Flow Control Output for Ring indicator signal (RI) to DTE CMOS 1.8V O Output for Data set ready signal (DSR) to DTE CMOS 1.8V C108/DTR (TBD) I Input for Data terminal ready signal (DTR) from DTE CMOS 1.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 Ball Signal I/O Function Internal Pull up Type 2/GPS ANT voltage detection R4 ADC_IN1 AI Analog/Digital converter input 1/GPS ANT voltage detection Analog Miscellaneous Functions G5 RESET* C9 VRTC_2V3 B11 STAT_LED G4 ON_OFF* D10 PWRMON I Reset input Pull up 2.3V AO VRTC Backup capacitor Power O Status indicator LED CMOS 1.8V I Input command for switching power ON or OFF (toggle command) O Power ON Monitor CMOS 1.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 Ball Signal I/O Function Internal Pull up Type L11 TGPIO_22 I/O Configurable GPIO #22 CMOS 1.8V K12 TGPIO_21 I/O Configurable GPIO #21 CMOS 1.8V M11 TGPIO_20 I/O Configurable GPIO #20 CMOS 1.8V P10 TGPIO_19 I/O Configurable GPIO #19 CMOS 1.8V N10 TGPIO_16 I/O Configurable GPIO #16 CMOS 1.8V M12 TGPIO_15 I/O Configurable GPIO #15 CMOS 1.8V P11 TGPIO_14 I/O Configurable GPIO #14 CMOS 1.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 Ball Signal I/O Function Internal Pull up Type Reserved RESERVED 20 pins reserved (D3,E3,F3,G3,H3,D2,E2,F2,C4,C3, H2,J2,G2,K2,L1,K1,G1,J1,L2,H1) RESERVED 7 pins reserved (P5,P3,P2,M1,N1,N2,P1) RESERVED 9 pins reserved (G7,E7,D7,D8,E8,F8,G8,D11,F7) RESERVED 6 pins reserved (C5,B8,C7,C8,B7,C6) RESERVED 16 pins reserved (A7,A8,C12,J9,A1,A6,A9,A10,A11, B1,B6,B12,D12,H4,P4,S12) NOTE: RESERVED Pins must be UNCONNECTED but be soldered.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 4.4. BALLS LAYOUT TOP VIEW Reproduction forbidden without Telit Communications S.p.A’s. written authorization - All Rights Reserved.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 5. 5.1. Hardware Commands Turning ON the HE863 To turn on HE863 Family, the pad ON/OFF# must be tied low for at least 1 second and then released. The maximum current that can be drained from the ON/OFF# pad is 0.1 mA. A simple circuit to do it is: NOTE: The HE863 Family turns fully on by supplying power more than 3.2V to the VBATT pads because of the first connect power on feature.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 desirable stability, HE863 Family needs at least 10 seconds after the PWRMON goes High. Following time charts can be referred according to the application design. i. First time supplying the power more than 3.2V to Vbatt By only first time supplying the power to Vbatt line, the HE863 Family will power on without toggling ON/OFF# pin. ii.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 iii. Using ON/OFF key when USB interface is used If the application will use the usb interface of HE863 Family, that is, actually the usb interface is correctly connected between the devices and USB_VBUS is asserted, the hold time to tie ON/OFF# to GND should be 3 ~ 4 sec to make it powering on. During the Initialization state, any kind of AT-command is not available. DTE must be waiting for the Activation state to communicate with HE863 Family.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 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): 2- Let us assume you need to drive the ON/OFF# pad directly with an ON/OFF button: 5.3. Turning OFF the HE863 The turning off the device can be done by below ways: - via AT command only (see HE863 Software User Guide) - by tying low the ON/OFF# pad for at least 2 seconds.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 When the hold time of ON/OFF# reaches above 2 seconds, HE863 Family 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 from the situation in which the HE863 Family is so it cannot be fixed definitely. Normally it will take above 10 seconds later from releasing ON/OFF# and DTE should monitor the status of PWRMON to see the actual power off.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 5.3.1. Hardware Unconditional Restart WARNING: The hardware unconditional Restart must not be used during normal operation of the device since it does not detach the device from the network. It shall be kept as an emergency exit procedure to be done in the rare case that the device gets stacked waiting for some network or SIM responses.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 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): This signal is internally pulled up so the pin can be left floating if not used. 5.4. Summary of Turning ON and OFF the HE863 Below chart describes the overall sequences for turning ON and OFF. Reproduction forbidden without Telit Communications S.p.A’s. written authorization - All Rights Reserved.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 6. 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 HE863 Family power requirements are: Power Supply Nominal Supply Voltage Max Supply Voltage Supply Voltage Range 3.8V 4.2V 3.4V – 4.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 6.2. General Design Rules The principal guidelines for the Power Supply Design embrace three different design steps: 6.2.1. x the electrical design x the thermal design x the PCB layout 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 two categories: 6.2.1.1.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 An example of linear regulator with 5V input is: 6.2.1.2. +12V Input Source Power Supply Design Guidelines x 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 HE863 Family.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 x Make sure the low ESR capacitor on the power supply output (usually a tantalum one) is rated at least 10V. x For Car applications a spike protection diode must be inserted close to the power input, in order to clean the supply from spikes. x A protection diode must be inserted close to the power input, in order to save HE863 Family from power polarity inversion. This can be the same diode as for spike protection.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 6.2.2.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 2W max during class12 GPRS upload. This generated heat will be mostly conducted to the ground plane under the HE863 Family; you must ensure that your application can dissipate heat. In the WCDMA/HSPA mode, since HE863 Family emits RF signals continuously during transmission, you must pay special attention how to dissipate the heat generated.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 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.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 7. Antenna(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.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 This line of transmission shall fulfill the following requirements: ANTENNA LINE ON PCB REQUIREMENTS Impedance 50 ohm Max Attenuation 0,3 dB No coupling with other signals allowed Cold End (Ground Plane) of antenna shall be equipotential to the HE863 Family ground pins.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 7.2.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 Layer1, Top layer: The ball in blue circle is A3 which is assigned to theGRF_ANT in the HE863 Family. It is the starting point from the HE863 Family to an AntennaGconnector in a host system. The trace info as; Thickness = 0.035 mm Width = 1.0 mm Length = 1.414 mm Clearance = 0.775 mm (Signal to GND) The actual trace limits in a host system should be calculated to correspond to 50ohm and it may be provided by the pcb maker.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 Layer3, inner layer: There is no cut-out. The related via remains only. Layer4, inner layer: There is no cut-out. The related via remains only. Reproduction forbidden without Telit Communications S.p.A’s. written authorization - All Rights Reserved.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 Layer5, inner layer: Same cut-out with layer 6’s should be applied to match 50ohm. Layer6, Bottom layer: The trace info as; Thickness = Width = Length = Clearance = 0.035 mm 1.2 mm 18.42 mm 2.0 mm (Signal to GND) The actual trace limits in a host system should be calculated to correspond to 50 ohm which may be provided by the pcb maker. Reproduction forbidden without Telit Communications S.p.A’s. written authorization - All Rights Reserved.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 7.3. GSM/WCDMA Antenna – Installation Guidelines x Install the antenna in a place covered by the GSM/WCDMA signal. x 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; x Antenna shall not be installed inside metal cases; x Antenna shall be installed also according Antenna manufacturer instructions.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 7.4. GPS Antenna Requirements (HE863-EUG/NAG/AUG only) The use of combined GPS antennas is NOT recommended; this solution could generate an extremely poor GPS reception and also the combination antenna requires additional diplexer and adds a loss in the RF route. The module is provided of an Antenna supply circuit with the following characteristics: x Supply voltage referred to VBATT (Must accept values from 3.4 to 4.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 Furthermore if the device is developed for the US and/or Canada market, it must comply to the FCC and/or IC approval requirements: This device is to be used only for mobile and fixed application. 7.5. GPS Antenna-PCB Line Guidelines (HE863EUG/NAG/AUG only) x Ensure that the antenna line impedance is 50 ohm; x Keep the antenna line on the PCB as short as possible to reduce the loss.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 Here is the guidance for GPS antenna path. Layer1, Top layer: The ball in blue circle is S1 which is assigned to the GPS_ANT in the HE863 Family. It is the starting point from the HE863 Family to an AntennaGconnector in a host system. The trace info as; Thickness = 0.035 mm Width = 1.0 mm Length = 1.025 mm Clearance = 0.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 Layer3, inner layer: There is no cut-out. The related via remains only. Layer4, inner layer: There is no cut-out. The related via remains only. Reproduction forbidden without Telit Communications S.p.A’s. written authorization - All Rights Reserved.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 Layer5, inner layer: Same cut-out with layer 6’s should be applied to match 50ohm. Layer6, Bottom layer: The trace info as; Thickness = Width = Length = Clearance = 0.035 mm 1.2 mm 13.395 mm 2.0 mm (Signal to GND) The actual trace limits in a host system should be calculated to correspond to 50 ohm which may be provided by the pcb maker. Reproduction forbidden without Telit Communications S.p.A’s. written authorization - All Rights Reserved.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 7.6. GPS Antenna-Installation Guidelines (HE863EUG/NAG/AUG only) x The HE863-EUG/NAG/AUG due to its characteristics of sensitivity is capable to perform a Fix inside the buildings. (In any case the sensitivity could be affected by the building characteristics i.e.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 8. Logic Level Specifications Where not specifically stated, all the interface circuits work at 1.8V CMOS logic levels. The following table shows the logic level specifications used in the Telit HE863 Family interface circuits: For 1.8V CMOS signals: Absolute Maximum Ratings -Not Functional Parameter Min Max Input level on any digital pin -0.3V +3.6V when on Input voltage on analog pins -0.15V +3.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 8.1. Reset Signal Signal RESET Function Phone reset I/O BGA Ball I G5 RESET is used to reset the HE863 Family module. Whenever this signal is pulled low, HE863 Family is reset. When the device is reset it stops all operations. After the release of the reset HE863 Family is unconditionally shut down, without doing any detach operations from the network where it is registered.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 9. Serial Ports The serial port on the Telit HE863 Family is the interface between the module and OEM hardware. 2 serial ports are available on the module: 9.1. x MODEM SERIAL PORT; x MODEM SERIAL PORT 2 (DEBUG). Modem Serial Port Several configurations can be designed for the serial port on the OEM hardware. The most common are: x RS232 PC com port; x microcontroller UART @ 1.8V – 2.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 9.2. RS232 Level Translation In order to interface the Telit HE863 Family with a PC com port or a RS232 (EIA/TIA-232) application a level translator is required. This level translator must: x invert the electrical signal in both directions; x Change the level from 0/1.8V to +15/-15V.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 An example of level translation circuitry of this kind is: 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. Reproduction forbidden without Telit Communications S.p.A’s. written authorization - All Rights Reserved.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 10. USB Port The HE863 Family module includes a Universal Serial Bus (USB) transceiver, which operates at USB low-speed (1.5Mbits/sec), USB full-speed (12Mbits/sec) and USB high-speed (480Mbits/sec). It is compliant with the USB 2.0 specification and can be used for diagnostic monitoring, control and data transfers.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 11. Audio Section (HE863-EUR/EUG/NAR/NAG/AUG only) The Baseband chip was developed for the cellular phones, which needed two separated amplifiers both in RX and in TX 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.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 11.2. Microphone Characteristics 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. 11.2.1.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 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: Using single ended configuration, the unused output line must be left open. Not respecting this constraint, the output stage will be damaged. DANGER: Using HS/MT, the serial capacitors below 100nF must be connected in the output lines.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 Line coupling DC single-ended AC Output load impedance 16 single-ended S.E. output impedance 0,5 signal bandwidth Single voltage (max.) ended 150 - 4000 Hz @ -3 dB output 2000 mVpp /Full scale single ended open circuit voltage, bipolar mode Max Output Power @ 16 Output load resistance Table 4. “Ear_HF” @ 1.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 12.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 12.1. Logic Level Specifications Where not specifically stated, all the interface circuits work at 1.8V CMOS logic levels. The following table shows the logic level specifications used in the HE863 Family interface circuits: For 1.8V CMOS signals: Absolute Maximum Ratings -Not Functional Parameter Min Max Input level on any digital pin -0.3V +3.6V when on Input voltage on analog pins -0.15V +3.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 the pads have a push-pull output and therefore the pull-up resistor may be omitted. 12.4. Using the Alarm Output GPIO6 The GPIO6 pad, when configured as Alarm Output, is controlled by the HE863 Family module and will rise when the alarm starts and fall after the issue of a dedicated AT command.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 12.6. 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. 12.7.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 Output current 100mA Output bypass capacitor (Inside the module) 1 F Reproduction forbidden without Telit Communications S.p.A’s. written authorization - All Rights Reserved.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 13. DAC and ADC section 13.1. DAC Converter 13.1.1. Description The HE863 Family module provides a Digital to Analog Converter. The signal (named DAC_OUT) is available on BGA Ball S4 of the HE863 Family module. 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.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 13.1.3. Low Pass Filter Example 13.2. ADC Converter 13.2.1. Description The on board ADCs are 10-bit converters. They are able to read a voltage level in the range of 0-1.2 volts applied on the ADC pin input and store and convert it into 10 bit word. Input Voltage range AD conversion Resolution Min 0 Max 1.2 Units Volt - 10 < 1.2 bits mV The HE863 Family module provides 3 Analog to Digital Converters.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 14. Mounting the HE863 Family on your board 14.1. General The Telit HE863 Family module has been designed in order to be compliant with a standard lead-free SMT process. 14.1.1. Recommended footprint for the application Reproduction forbidden without Telit Communications S.p.A’s. written authorization - All Rights Reserved.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 14.1.2. Suggested Inhibit Area In order to easily rework the HE863 Family it is suggested to consider on the application a 1.5mm Inhibit area around the module. It is also suggested, as common rule for an SMT component, to avoid having a mechanical part of the application in direct contact with the module. 14.1.3.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 Placement of microvias not covered by solder resist is not recommended, unless the microvia carries the same signal of the pad itself. Holes in pad are allowed only for blind holes and not for through holes. Recommendations for PCB pad surfaces: The PCB must be able to resist the higher temperatures, which are occurring at the lead-free process. This issue should be discussed with the PCB-supplier.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 14.1.6. HE863 Family Solder Reflow The following is the recommended solder reflow profile NOTE: All temperatures refer to topside of the package, measured on the package body surface. WARNING: HE863 Family module can accept only one reflow process. Reproduction forbidden without Telit Communications S.p.A’s. written authorization - All Rights Reserved.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 14.2. DEBUG OF THE HE863 Family IN PRODUCTION To test and debug the mounting of HE863 Family, we strongly recommend foreseeing test pads on the host PCB, in order to check the connection between the HE863 Family itself and the application and to test the performance of the module connecting it with an external computer.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 15. SIM holder design guide 15.1. Overview In HE863 Family modules there are five pins for SIM card holder connection.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 NOTE: SIMIN doesn’t require any pull-up resistor. It is built in. SIM card is detected inserted when this line is short to ground.(TBD) If in the application the SIM holder doesn’t foresee the switch for the presence/absence of the SIM card, the SIMIN line must be connected to ground. 15.2. SIM interface When designing SIM interface on the application boards, the following schematics are recommended.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 Telit highly recommends that the customers should verify the relating specification when they design. But in general there will be no issue if above schematics were made on the application board. All components are DNI but one component should be reserved for each line because they may need to debug in future. HE863 Family modules already have internally 4.7kohm pull up resistor on SIMIO line.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 16. Antenna detection design guide The following assumes that the application is using a commonly found 10K DC terminated antenna. The figure below outlines the reference implementation, please keep in mind that these components are in the RF path and care must be taken when implementing this circuit. The Vaux is a 1.8V regulated power source output from the module. ADC is a 0 ~ 1200mV 10-bit Analog to Digital Converter input.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 17. Conformity Assessment Issues The Telit HE863 Family have 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.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 The user must refer to below information to meet the FCC/IC's RF exposure rules and regulations when they design: • • • • • • • 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.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 The following regulatory and safety notices must be published in documentation supplied to the end user of the product or system incorporating an adapter in compliance with local regulations. • Host system including HE863-NAD must be labeled with “Contains transmitter module with FCC ID:RI7HE863NA and IC ID:5131A-HE863NA”.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 18. Safety Recommendations 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: x Where it can interfere with other electronic devices in environments such as hospitals, airports, aircrafts, etc. x Where there is risk of explosion such as gasoline stations, oil refineries, etc.
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HE863 Family Hardware User Guide 1vv0300891 Rev.6- 2011-04-14 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 Reproduction forbidden without Telit Communications S.p.A’s. written authorization - All Rights Reserved.