Telit Wireless Solutions WL865E4-P User manual

[01.2017]
Mod. 0805 2017-01 Rev.6
WL865E4-P
HW User Guide
1VV0301580 Rev. 4 –2019-08-08

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SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
NOTICE
While reasonable efforts have been made to assure the accuracy of this document, Telit
assumes no liability resulting from any inaccuracies or omissions in this document, or from
use of the information obtained herein. The information in this document has been carefully
checked and is believed to be reliable. However, no responsibility is assumed for
inaccuracies or omissions. Telit reserves the right to make changes to any products
described herein and reserves the right to revise this document and to make changes from
time to time in content hereof with no obligationto notify any person of revisions or changes.
Telit does not assume any liability arising out of the application or use of any product,
software, or circuit described herein; neither does it convey license under its patent rights
or the rights of others.
It is possible that this publication may contain references to, or information about Telit
products (machines and programs), programming, or services that are not announced in
your country. Such references or information must not be construed to mean that Telit
intends to announce such Telit products, programming, or services in your country.
COPYRIGHTS
This instruction manual and the Telit products described in this instruction manual may be,
include or describe copyrighted Telit material, such as computer programs stored in
semiconductor memories or other media. Laws in the Italy and other countries preserve for
Telit and its licensors certain exclusive rights for copyrighted material, including the
exclusive right to copy, reproduce in any form, distribute and make derivative works of the
copyrighted material. Accordingly, any copyrighted material of Telit and its licensors
contained herein or in the Telit products described in this instruction manual may not be
copied, reproduced, distributed, merged or modified in any manner without the express
written permission of Telit. Furthermore, the purchase of Telit products shall not be deemed
to grant either directly or by implication, estoppel, or otherwise, any license under the
copyrights, patents or patent applications of Telit, as arises by operation of law in the sale
of a product.
COMPUTER SOFTWARE COPYRIGHTS
The Telit and 3rd Party supplied Software (SW) products described in this instruction
manual may include copyrighted Telit and other 3rd Party supplied computer programs
stored in semiconductor memories or other media. Laws in the Italy and other countries
preserve for Telit and other 3rd Party supplied SW certain exclusive rights for copyrighted
computer programs, including the exclusive right to copy or reproduce in any form the
copyrighted computer program. Accordingly, any copyrighted Telit or other 3rd Party
supplied SW computer programs contained in the Telit products described in this instruction
manual may not be copied (reverse engineered) or reproduced in any manner without the
express written permission of Telit or the 3rd Party SW supplier. Furthermore, the purchase
of Telit products shall not be deemed to grant either directly or by implication, estoppel, or
otherwise, any license under the copyrights, patents or patent applications of Telit or other
3rd Party supplied SW, except for the normal non-exclusive, royalty free license to use that
arises by operation of law in the sale of a product.

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USAGE AND DISCLOSURE RESTRICTIONS
I. License Agreements
The software described in this document is the property of Telit and its licensors. It is
furnished by express license agreement only and may be used only in accordance with the
terms of such an agreement.
II. Copyrighted Materials
Software and documentation are copyrighted materials. Making unauthorized copies is
prohibited by law. No part of the software or documentation may be reproduced,
transmitted, transcribed, stored in a retrieval system, or translated into any language or
computer language, in any form or by any means, without prior written permission of Telit
III. High Risk Materials
Components, units, or third-party products used in the product described herein are NOT
fault-tolerant and are NOT designed, manufactured, or intended for use as on-line control
equipment in the following hazardous environments requiring fail-safe controls: the
operation of Nuclear Facilities, Aircraft Navigation or Aircraft Communication Systems, Air
Traffic Control, Life Support, or Weapons Systems (High Risk Activities"). Telit and its
supplier(s) specifically disclaim any expressed or implied warranty of fitness for such High
Risk Activities.
IV. Trademarks
TELIT and the Stylized T Logo are registered in Trademark Office. All other product or
service names are the property of their respective owners.
V. Third Party Rights
The software may include Third Party Right software. In this case you agree to comply with
all terms and conditions imposed on you in respect of such separate software. In addition
to Third Party Terms, the disclaimer of warranty and limitation of liability provisions in this
License shall apply to the Third Party Right software.
TELIT HEREBY DISCLAIMS ANY AND ALL WARRANTIES EXPRESS OR IMPLIED
FROM ANY THIRD PARTIES REGARDING ANY SEPARATE FILES, ANY THIRD PARTY
MATERIALS INCLUDED IN THE SOFTWARE, ANY THIRD PARTY MATERIALS FROM
WHICH THE SOFTWARE IS DERIVED (COLLECTIVELY “OTHER CODE”), AND THE
USE OF ANY OR ALL THE OTHER CODE IN CONNECTION WITH THE SOFTWARE,
INCLUDING (WITHOUT LIMITATION) ANY WARRANTIES OF SATISFACTORY
QUALITY OR FITNESS FOR A PARTICULAR PURPOSE.
NO THIRD PARTY LICENSORS OF OTHER CODE SHALL HAVE ANY LIABILITY FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED
AND WHETHER MADE UNDER CONTRACT, TORT OR OTHER LEGAL THEORY,
ARISING IN ANY WAY OUT OF THE USE OR DISTRIBUTION OF THE OTHER CODE
OR THE EXERCISE OF ANY RIGHTS GRANTED UNDER EITHER OR BOTH THIS
LICENSE AND THE LEGAL TERMS APPLICABLE TO ANY SEPARATE FILES, EVEN IF
ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

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APPLICABILITY TABLE (REMOVE UNUSED)
PRODUCTS
WL865E4-P

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Contents
NOTICE 2
COPYRIGHTS................................................................................................ 2
COMPUTER SOFTWARE COPYRIGHTS...................................................... 2
USAGE AND DISCLOSURE RESTRICTIONS............................................... 3
I. License Agreements..................................................................... 3
II. Copyrighted Materials................................................................... 3
III. High Risk Materials....................................................................... 3
IV. Trademarks .................................................................................. 3
V. Third Party Rights......................................................................... 3
APPLICABILITY TABLE (REMOVE UNUSED) ............................................. 4
CONTENTS.................................................................................................... 5
1. INTRODUCTION.......................................................................... 8
Scope........................................................................................... 8
Audience....................................................................................... 8
Contact Information, Support........................................................ 8
Text Conventions.......................................................................... 9
Related Documents.................................................................... 10
2. OVERVIEW................................................................................ 11
3. PINS ALLOCATION................................................................... 13
Pin-out Table.............................................................................. 13
Pads Layout................................................................................ 17
4. POWER SUPPLY....................................................................... 18
Power Supply Requirements....................................................... 18
General Design Rules................................................................. 20
5. DIGITAL SECTION .................................................................... 21
Logic Levels................................................................................ 21
Power Up/Down Sequence......................................................... 22
5.2.1. Power-on reset timing................................................................. 22
Unconditional Shutdown............................................................. 22
Periferals Interface Summary...................................................... 23

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Communication ports.................................................................. 24
5.5.1. High Speed UART...................................................................... 24
5.5.2. Low Speed UART....................................................................... 24
5.5.3. SDIO........................................................................................... 25
5.5.4. SPI.............................................................................................. 25
5.5.5. I2C.............................................................................................. 25
5.5.6. USB............................................................................................ 25
General purpose I/O................................................................... 25
ADC Converter ........................................................................... 27
General Digital Interface Recommendations............................... 27
6. RF SECTION.............................................................................. 29
Bands Variants........................................................................... 29
6.1.1. WIFI............................................................................................ 29
6.1.2. BlueTooth................................................................................... 29
TX Output power......................................................................... 30
6.2.1. WIFI............................................................................................ 30
6.2.1.1. 2.4GHz....................................................................................... 30
6.2.1.2. 5GHz.......................................................................................... 31
6.2.2. BlueTooth................................................................................... 31
RX Sensitivity ............................................................................. 32
6.3.1. WIFI............................................................................................ 32
6.3.1.1. 2.4GHz....................................................................................... 32
6.3.1.2. 5GHz.......................................................................................... 33
6.3.2. BlueTooth................................................................................... 33
WIFI Antenna requirements........................................................ 34
BlueTooth Antenna requirements ............................................... 34
PCB Antenna Design Guidelines ................................................ 34
PCB Design Guidelines .............................................................. 34
6.7.1. PCB General Guidelines............................................................. 34
6.7.2. RF PCB Guidelines..................................................................... 36
7. AUDIO SECTION....................................................................... 39
Electrical Characteristics............................................................. 39
8. MECHANICAL DESIGN............................................................. 40
Drawing ...................................................................................... 40
9. APPLICATION PCB DESIGN .................................................... 42

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Footprint..................................................................................... 42
PCB pad design.......................................................................... 42
PCB pad dimensions.................................................................. 43
Stencil......................................................................................... 43
Solder paste ............................................................................... 43
Solder Reflow............................................................................. 44
10. PACKAGING.............................................................................. 46
Tray............................................................................................ 46
Moisture sensitivity ..................................................................... 47
11. CONFORMITY ASSESSMENT ISSUES .................................... 48
FCC/IC Regulatory notices ......................................................... 48
12. FCC/IC COMPLIANCE............................................................... 49
13. SAFETY RECOMMENDATIONS................................................ 52
READ CAREFULLY.................................................................... 52
14. ACRONYMS............................................................................... 53
15. DOCUMENT HISTORY.............................................................. 55

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1. INTRODUCTION
Scope
The aim of this document is the description of some hardware solutions useful for
developing a product with the Telit WL865E4-P module.
Audience
This document is intended for Telit customers, who are integrators, about to implement their
applications using our WL865E4-P modules.
Contact Information, Support
For general contact, technical support services, technical questions and report
documentation errors contact Telit Technical Support at:
•TS[email protected]
•[e-mail]
•[e-mail]
•[e-mail]
Alternatively, use:
http://www.telit.com/support
For detailed information about where you can buy the Telit modules or for recommendations
on accessories and components visit:
http://www.telit.com
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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Text Conventions
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, ifthese 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. 2019-01-08.

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Related Documents
WL865E4-P AT Command Reference Guide
WL865E4-P_EVB_User_Guide
WL865_PCB_Antenna_Integration_Guide

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WL865E4
2. OVERVIEW
The aim of this document is the description of some hardware solutions useful for
developing a product with the Telit WL865E4-P 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 WL865E4-P module. For
further hardware details that may not be explained in this document refer to the Telit
WL865E4-P Product Description document where all the hardware information is reported.
NOTE:
(EN) The integration of the WL865E4-P module within user application
shall be done according to the design rules described in this manual.
(IT) L’integrazione del modulo cellulare WL865E4-P all’interno
dell’applicazione dell’utente dovrà rispettare le indicazioni progettuali
descritte in questo manuale.
(DE) Die Integration des WL865E4-P Mobilfunk-Moduls in ein Gerät
muß gemäß der in diesem Dokument beschriebenen
Kunstruktionsregeln erfolgen.
(SL) Integracija WL865E4-P modula v uporabniški aplikaciji bo morala
upoštevati projektna navodila, opisana v tem priročniku.
(SP) La utilización del modulo WL865E4-P debe ser conforme a los
usos para los cuales ha sido deseñado descritos en este manual del
usuario.
(FR) L’intégration du module cellulaire WL865E4-P dans l’application
de l’utilisateur sera faite selon les règles de conception décrites dans
ce manuel.
(HE)

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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.

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3. PINS ALLOCATION
Pin-out Table
Pin
Signal
I/O
Function
Type
Comment
USB HS 2.0 COMMUNICATION PORT
12
VUSB
I
Power Supply for the
internal USB transceiver.
POWER
Connect to
VDD_BLE
13
USB_D-
AIO
USB differential Data -
AIO
Used only for
programming
and testing
14
USB_D+
AIO
USB differential Data +
AIO
Used only for
programming
and testing
High Speed Asynchronous Serial Port (USIF0)
23
UART0_CTS / GPIO_22
DI
Input
VDD_VIO
Max baud rate
3 Mbps
24
UART0_RTS / GPIO_23
DO
Output
VDD_VIO
Max baud rate
3 Mbps
25
UART0_RXD / GPIO_24
DI
Serial data input
VDD_VIO
Max baud rate
3 Mbps
26
UART0_TXD / GPIO_25
DO
Serial data output
VDD_VIO
Max baud rate
3 Mbps
Low Speed Asynchronous Serial Port (USIF1)
27
UART1_RXD / GPIO_26
DI
Serial data input
VDD_VIO
Max baud rate
115200 bps
28
UART1_TXD / GPIO_27
DO
Serial data output
VDD_VIO
Max baud rate
115200 bps
Serial Peripheral Interface (SPI)
53
SPI_M_CS / GPIO_11
DIO
General Purpose
Input/Output
VDD_VIO
SPI Chip
Select (Master)
(Active LOW)
54
SPI_M_CLK / GPIO_12
DIO
General Purpose
Input/Output
VDD_VIO
SPI Clock
(Master)

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Serial Peripheral Interface (SPI) (cont…)
55
SPI_M_MISO / GPIO_14
DIO
General Purpose
Input/Output
VDD_VIO
SPI MISO
(Master)
56
SPI_M_MOSI / GPIO_13
DIO
General Purpose
Input/Output
VDD_VIO
SPI MOSI
(Master)
Secure Digital Input Output (SDIO)
46
SDIO_CLK / SPI_S_CLK
GPIO_32
DIO
SDIO card CLK signal
VDD_VIO
SPI_S_CLK
Slave (PWM)
47
SDIO_CMD / SPI_S_CS
GPIO_33
DIO
SDIO card Command
signal
VDD_VIO
SPI_S_CS
(Active LOW)
Slave (PWM)
48
SDIO_D3 / SPI_S_MOSI
GPIO_34
DIO
SDIO card DAT[3] signal
VDD_VIO
SPI_S_MOSI
Slave (PWM)
49
SDIO_D2 / USB_BOOT
GPIO_35
DIO
SDIO card DAT[2] signal
VDD_VIO
USB BOOT
Mode (Active
HIGH) (PWM)
50
SDIO_D1 / GPIO_36
DIO
SDIO card DAT[1] signal
VDD_VIO
(PWM)
51
SDIO_D0 / SPI_S_MISO
GPIO_37
DIO
SDIO card DAT[0] signal
VDD_VIO
SPI_S_MISO
Slave (PWM)
Inter-Integrated Circuit Interface (I2C)
21
I2C_SDA / GPIO_06
DIO
Data
VDD_VIO
I2C Data
(Master)
22
I2C_SCL / GPIO_07
DIO
Clock
VDD_VIO
I2C Clock
(Master)
Analog Interface (ADC)
3
ADC_IN3 / GPIO_17
DIO
12 BITS 1Mhz
VDD_VIO
AI
In ADC mode
VDD_VIO must
be 1V8 only
4
ADC_IN2 / GPIO_16
DIO
12 BITS 1Mhz
VDD_VIO
AI
In ADC mode
VDD_VIO must
be 1V8 only
5
ADC_IN1 / GPIO_15
DIO
12 BITS 1Mhz
VDD_VIO
AI
In ADC mode
VDD_VIO must
be 1V8 only

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Digital Audio Interface (I2S) Master/Slave
17
I2S_SYNC / GPIO_28
DIO
I2S - Frame Sync or LR
Clock
VDD_VIO
18
I2S_SCK / GPIO_30
DIO
I2S - Bit Clock
VDD_VIO
19
I2S_SDO / GPIO_31
DIO
I2S - Data Ouput
VDD_VIO
20
I2S_SDI / GPIO_29
DIO
I2S - Data Input
VDD_VIO
Miscellaneous Fuctions
1
RESET#
DIO
Hardware RESET
Power Disable
VDD_VIO
Open Drain
Active LOW
2
BT_PRIORITY / GPIO_02
DIO
GENERIC IO
VDD_VIO
BT_PRIORITY
15
PWM_OUT0 / GPIO_05
DIO
GENERIC IO
VDD_VIO
DAC (PWM)
16
LF_CLK_IN / GPIO_08
DIO
GENERIC IO
VDD_VIO
Optional
External 32KHz
Clock Input
33
WIFI_ACTIVE / GPIO_03
DIO
GENERIC IO
VDD_VIO
WIFI_ACTIVE
34
BT_ACTIVE / GPIO_04
DIO
GENERIC IO
VDD_VIO
BT_ACTIVE
43
WAKEUP / GPIO_01
DIO
GENERIC IO
VDD_VIO
WAKEUP
44
WoW / GPIO_09
DIO
GENERIC IO
VDD_VIO
Wake on
Wireless LAN
(WoW)
(OD) (PWM)
45
GPIO_10
DIO
General Purpose
Input/Output
VDD_VIO
Programmable:
WPS,
Whatchdog,
SW_Reset
JTAG Pads
30
JTAG / GPIO_18
DIO
GENERIC IO
VDD_VIO
JTAG
31
JTAG / GPIO_19
DIO
GENERIC IO
VDD_VIO
JTAG
29
JTAG / GPIO_20
DIO
GENERIC IO
VDD_VIO
JTAG
32
JTAG / GPIO_21
DIO
GENERIC IO
VDD_VIO
JTAG

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Table 1: WL865E4-P Pinout Table
RF Pads
37
ANT_BLE
AIO
BT 2.4G
RF
50 ohm
40
ANT_WIFI
AIO
WIFI 2.4G and 5G
RF
50 ohm
Power Supply
6
VDD_WLAN
I
WiFi main power supply
Power
(3.0V to 3.6V)
3.3V Nominal
Power Supply
9
VDD_VIO
I
Digital Input/Output
power supply
Power
(1.8V to 3.6V)
3.3V Nominal
Power Supply
11
VDD_BLE
I
Bluetooth main power
supply
Power
(3.0V to 3.6V)
3.3V Nominal
Power Supply
7
GND
-
Ground
Power
8
GND
-
Ground
Power
10
GND
-
Ground
Power
35
GND
-
Ground
Power
36
GND
-
Ground
Power
38
GND
-
Ground
Power
39
GND
-
Ground
Power
41
GND
-
Ground
Power
42
GND
-
Ground
Power
52
GND
-
Ground
Power
57
GND
-
Ground
Power

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Pads Layout
The figure 1 shows the pads layout configuration for the module (top view)
Figure 1: Top View Pad Layout

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4. POWER SUPPLY
Power Supply Requirements
Power Supply
Minimum
Typical
Maximum
Absolute Maximum to avoid permanent
damage. At any power supply pin.
-0.3 V
4.0V
Recommended VDD_BLE, VDD_WLAN,
USB_VDD
3.14 V
3.3V
3.46V
Recommended VDD_VIO (see notes)
3.14V
or
1.71V
3.3V
or
1.8V
3.46V
or
1.89V
Table 2: Wl865E4-P power supply requirements
Note: The ADC can be used only if VDD_VIO is equal to 1V8.

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Power Consumption vs TX power at 2.4 GHz
WIFI 2G4 / CH 6
Standard 802.11x
Modulation
Data rates
(Mbps)
RF Output
(dBm)
Current
@3.3V
Unit
b
BPSK
1 Mbps
19
339
mA
b
QPSK
2 Mbps
19
342
mA
b
CCK
5.5 Mbps
19
327
mA
b
CCK
11 Mbps
19
326
mA
g
BPSK
6 Mbps
19
332
mA
g
BPSK
9 Mbps
19
330
mA
g
QPSK
12 Mbps
19
326
mA
g
QPSK
18 Mbps
18
294
mA
g
16 QAM
24 Mbps
18
286
mA
g
16 QAM
36 Mbps
18
276
mA
g
64 QAM
48 Mbps
17
266
mA
g
64 QAM
54 Mbps
16
230
mA
n
BPSK
MCS0_20
19
320
mA
n
QPSK
MCS1_20
19
324
mA
n
QPSK
MCS2_20
19
309
mA
n
16 QAM
MCS3_20
18
285
mA
n
16 QAM
MCS4_20
18
277
mA
n
64 QAM
MCS5_20
17
252
mA
n
64 QAM
MCS6_20
17
232
mA
n
64 QAM
MCS7_20
17
224
mA
Table 3: WL865E4-P TX Table consumption @ 2.4 GHz

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Power Consumption vs TX power at 5 GHz
WIFI 5G / CH 100
Standard 802.11x
Modulation
Data rates
RF Output
(dBm)
Current
@3.3V
Unit
a
BPSK
6 Mbps
15.5
267
mA
a
BPSK
9 Mbps
15.5
265
mA
a
QPSK
12 Mbps
15.5
265
mA
a
QPSK
18 Mbps
15.5
263
mA
a
16 QAM
24 Mbps
15.5
265
mA
a
16 QAM
36 Mbps
14
230
mA
a
64 QAM
48 Mbps
13
218
mA
a
64 QAM
54 Mbps
13
216
mA
n
BPSK
MCS0_20
15.5
267
mA
n
QPSK
MCS1_20
15.5
263
mA
n
QPSK
MCS2_20
15
253
mA
n
16 QAM
MCS3_20
15
250
mA
n
16 QAM
MCS4_20
14
230
mA
n
64 QAM
MCS5_20
14
227
mA
n
64 QAM
MCS6_20
13
219
mA
n
64 QAM
MCS7_20
13
218
mA
Table 4: WL865E4-P TX Table consumption @5GHz
The equipment must be supplied by an external limited power source
in compliance with the clause 2.5 of the standard EN 60950-1.
General Design Rules
It is recommended to provide at least 10µF capacitors right next to the VDD_WLAN and BT
pins, and 2.2µF at each of the other power supply pins like VDD_VIO and VUSB.