Telit Wireless Solutions WL865E4-P User manual

[01.2017]
Mod. 0805 2017-01 Rev.6
WL865E4-P
HW User Guide
1VV0301580 Rev. 1 –2019-04-02

WL865E4-P Module Hardware User Guide
1VV0301580 Rev. 1 Page 2of 52 2019-04-02
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 obligation to 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.

WL865E4-P Module Hardware User Guide
1VV0301580 Rev. 1 Page 3of 52 2019-04-02
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.

WL865E4-P Module Hardware User Guide
1VV0301580 Rev. 1 Page 4of 52 2019-04-02
APPLICABILITY TABLE (REMOVE UNUSED)
PRODUCTS
WL865E4-P

WL865E4-P Module Hardware User Guide
1VV0301580 Rev. 1 Page 5of 52 2019-04-02
Contents
NOTICE 2
COPYRIGHTS................................................................................................ 2
COMPUTER SOFTWARE COPYRIGHTS...................................................... 2
USAGE AND DISCLOSURE RESTRICTIONS............................................... 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........................................................................................ 13
Pads Layout................................................................................ 17
4. POWER SUPPLY....................................................................... 18
Power Supply Requirements....................................................... 18
Power Consumption ................................................................... 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
Communication ports.................................................................. 22
5.4.1. High Speed UART...................................................................... 22
5.4.2. Low Speed UART....................................................................... 23
5.4.3. SDIO........................................................................................... 23
5.4.4. SPI.............................................................................................. 24

WL865E4-P Module Hardware User Guide
1VV0301580 Rev. 1 Page 6of 52 2019-04-02
5.4.5. I2C.............................................................................................. 24
5.4.6. USB............................................................................................ 24
General purpose I/O................................................................... 24
ADC / DAC Converter................................................................. 25
Special Functions ....................................................................... 26
General Digital Interface Recommendations............................... 26
6. RF SECTION.............................................................................. 27
Bands Variants........................................................................... 27
6.1.1. WIFI............................................................................................ 27
6.1.2. BlueTooth................................................................................... 27
TX Output power......................................................................... 28
6.2.1. WIFI............................................................................................ 28
6.2.1.1. 2.4 GHz...................................................................................... 28
6.2.1.2. 5 GHz......................................................................................... 29
6.2.2. BlueTooth................................................................................... 30
RX Sensitivity ............................................................................. 30
6.3.1. WIFI............................................................................................ 30
6.3.1.1. 2.4 GHz...................................................................................... 30
6.3.1.2. 5 GHz......................................................................................... 31
6.3.2. BlueTooth................................................................................... 32
WIFI Antenna requirements........................................................ 32
BlueTooth Antenna requirements ............................................... 32
PCB Design Guidelines .............................................................. 33
6.6.1. PCB General Guidelines............................................................. 33
6.6.2. RF PCB Guidelines..................................................................... 34
6.6.3. PCB Guidelines in case of FCC Certification .............................. 36
7. AUDIO SECTION....................................................................... 37
Electrical Characteristics............................................................. 37
Codec examples......................................................................... 37
8. MECHANICAL DESIGN............................................................. 38
Drawing ...................................................................................... 38
9. APPLICATION PCB DESIGN .................................................... 40
Footprint..................................................................................... 40
PCB pad design.......................................................................... 40
PCB pad dimensions.................................................................. 41

WL865E4-P Module Hardware User Guide
1VV0301580 Rev. 1 Page 7of 52 2019-04-02
Stencil......................................................................................... 41
Solder paste ............................................................................... 41
Solder Reflow ............................................................................. 42
10. PACKAGING.............................................................................. 44
Tray............................................................................................ 44
Moisture sensitivity ..................................................................... 45
11. CONFORMITY ASSESSMENT ISSUES .................................... 46
FCC/IC Regulatory notices ......................................................... 46
12. SAFETY RECOMMENDATIONS................................................ 47
READ CAREFULLY.................................................................... 47
13. ACRONYMS............................................................................... 48
14. DOCUMENT HISTORY .............................................................. 50

WL865E4-P Module Hardware User Guide
1VV0301580 Rev. 1 Page 8of 52 2019-04-02
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 isintended forTelit 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-EM[email protected]
•TS-AM[email protected]
•[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.

WL865E4-P Module Hardware User Guide
1VV0301580 Rev. 1 Page 9of 52 2019-04-02
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, if these points are notfollowed, 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.

WL865E4-P Module Hardware User Guide
1VV0301580 Rev. 1 Page 10 of 52 2019-04-02
Related Documents
WL865E4-P AT Command Reference Guide
WL865E4-P EVB USER GUIDE

WL865E4-P Module Hardware User Guide
1VV0301580 Rev. 1 Page 11 of 52 2019-04-02
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.
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 WL865E4-P all’interno dell’applicazione
dell’utente dovrà rispettare le indicazioni progettuali descritte in questo
manuale.
(DE) Die Integration des WL865E4-P 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 WL865E4-P 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

WL865E4-P Module Hardware User Guide
1VV0301580 Rev. 1 Page 12 of 52 2019-04-02
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.

WL865E4-P Module Hardware User Guide
1VV0301580 Rev. 1 Page 13 of 52 2019-04-02
3. PINS ALLOCATION
Pin-out
The pin out table is shown below, the pins have been grouped for functional areas
Pin
Signal
I/O
Function
Type
Comment
USB HS 2.0 COMMUNICATION PORT
12
VUSB
I
Power Supply for
the internal USB
transceiver.
POWER
VDD_BLE
13
USB_D-
I/O
USB differential
Data -
Used only for
programming/testing
14
USB_D+
I/O
USB differential
Data +
Used only for
programming/testing
High Speed Asynchronous Serial Port (HS-UART0)
23
UART0_CTS
I
Input
VDD_VIO
Max baud rate 3 Mbps
24
UART0_RTS
O
Output
VDD_VIO
Max baud rate 3 Mbps
25
UART0_RXD
I
Serial data input
VDD_VIO
Max baud rate 3 Mbps
26
UART0_TXD
O
Serial data
output
VDD_VIO
Max baud rate 3 Mbps
Low Speed Asynchronous Serial Port (UART1)
27
UART1_RXD
I
Serial data input
VDD_VIO
Max baud rate 115200
bps
28
UART1_TXD
O
Serial data
output
VDD_VIO
Max baud rate 115200
bps
Serial Peripheral Interface (SPI)
53
GPIO_11/SPI_M_CS
I/O
General Purpose
Input/Output
VDD_VIO
SPI Chip Select
(Master) (Active LOW)
54
GPIO_12/SPI_M_CLK
I/O
General Purpose
Input/Output
VDD_VIO
SPI Clock (Master)
55
GPIO_14/SPI_M_MISO
I/O
General Purpose
Input/Output
VDD_VIO
SPI MISO (Master)
56
GPIO_13/SPI_M_MOSI
I/O
General Purpose
Input/Output
VDD_VIO
SPI MOSI (Master)

WL865E4-P Module Hardware User Guide
1VV0301580 Rev. 1 Page 14 of 52 2019-04-02
Secure Digital Input Output (SDIO)
46
SDIO_CLK/SPI_S_CLK
I/O
SDIO card CLK
signal
VDD_VIO
Slave SPI_S_CLK
(PWM)
47
SDIO_CMD/SPI_S_CS
I/O
SDIO card
Command signal
VDD_VIO
Slave SPI_S_CS
(Active LOW) (PWM)
48
SDIO_D3/SPI_S_MOSI
I/O
SDIO card
DAT[3] signal
VDD_VIO
Slave SPI_S_MOSI
(PWM)
49
SDIO_D2/USB_BOOT
I/O
SDIO card
DAT[2] signal
VDD_VIO
USB BOOT Mode
(Active HIGH) (PWM)
50
SDIO_D1
I/O
SDIO card
DAT[1] signal
VDD_VIO
(PWM)
51
SDIO_D0/SPI_S_MISO
I/O
SDIO card
DAT[0] signal
VDD_VIO
Slave SPI_S_MISO
(PWM)
Inter-Integrated Circuit Interface (I2C)
21
GPIO_06/I2C_SDA
I/O
Data
VDD_VIO
I2C Data (Master)
22
GPIO_07/I2C_SCL
I/O
Clock
VDD_VIO
I2C Clock (Master)
Analog Interface (ADC)
3
GPIO_17/ADC_IN3
I/O
12 BITS 1MHz
VDD_VIO
In ADC mode
VDD_VIO must be
1V8 only
4
GPIO_16/ADC_IN2
I/O
12 BITS 1MHz
VDD_VIO
In ADC mode
VDD_VIO must be
1V8 only
5
GPIO_15/ADC_IN1
I/O
12 BITS 1MHz
VDD_VIO
In ADC mode
VDD_VIO must be
1V8 only
Digital Audio Interface (I2S) Master/Slave
17
I2S_SYNC
I/O
I2S - Frame
Sync or LR
Clock
VDD_VIO
18
I2S_SCK
I/O
I2S - Bit Clock
VDD_VIO
19
I2S_SDO
I/O
I2S - Data
Ouput
VDD_VIO
20
I2S_SDI
I/O
I2S - Data Input
VDD_VIO

WL865E4-P Module Hardware User Guide
1VV0301580 Rev. 1 Page 15 of 52 2019-04-02
Miscellaneous Fuctions
1
RESET#
I
Hardware
RESET / Power
Disable
VDD_VIO
Active LOW
2
GPIO_02/BT_PRIORITY
I/O
GENERIC IO
VDD_VIO
BT_PRIORITY
15
GPIO_05/DAC_OUT
I/O
GENERIC IO
VDD_VIO
DAC_OUT1
16
GPIO_08/LF_CLK_IN
I/O
GENERIC IO
VDD_VIO
External 32 kHz Clock
Input or floating if not
used.
33
GPIO_03/ WIFI_ACTIVE
I/O
GENERIC IO
VDD_VIO
WIFI_ACTIVE
34
GPIO_04/BT_ACTIVE
I/O
GENERIC IO
VDD_VIO
BT_ACTIVE
43
GPIO_01/WAKEUP
I/O
GENERIC IO
VDD_VIO
WAKEUP
44
GPIO_09/WoW
I/O
GENERIC IO
VDD_VIO
Wake on Wireless
LAN (WoW) (OD)
(PWM)
45
GPIO_10/SW_RESET
I/O
General Purpose
Input/Output
VDD_VIO
Can be
reprogrammed
Input Software
RESET
WPS
Output Watchdog,
etc.Output Watchdog
RF Pads
37
ANT_BLE
I/O
BT 2.4 GHz
RF
50 Ω
40
ANT_WIFI
I/O
WIFI 2.4 GHz
WIFI 5 GHz
RF
50 Ω
Power Supply
6
VDD_WLAN
I
WIFI main power
supply
Power
(3.0 V to 3.6 V)
3.3 V Nominal Power
Supply
9
VDD_VIO
I
Digital
Input/Output
power supply
Power
(1.8 V to 3.6 V)
3.3 V Nominal Power
Supply

WL865E4-P Module Hardware User Guide
1VV0301580 Rev. 1 Page 16 of 52 2019-04-02
Power Supply (cont…)
11
VDD_BLE
I
Bluetooth main
power supply
Power
(3.0 V to 3.6 V)
3.3 V Nominal Power
Supply
7
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
58
GND
-
Ground
Power
Table 3 1: WL865E4-P Pinout Table

WL865E4-P Module Hardware User Guide
1VV0301580 Rev. 1 Page 17 of 52 2019-04-02
Pads Layout
The Figure 3-1 shows the pads layout configuration for the module (top view)
Figure 3-1: Top View Pad Layout

WL865E4-P Module Hardware User Guide
1VV0301580 Rev. 1 Page 18 of 52 2019-04-02
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
4.0 V
Recommended VDD_BLE, VDD_WLAN,
USB_VDD
3.14 V
3.3 V
3.46 V
Recommended VDD_VIO (see notes)
3.14 V
or
1.71 V
3.3 V
or
1.8 V
3.46 V
or
1.89 V
Table 4-1: Wl865E4-P power supply requirements
Note: The ADC can be used only if VDD_VIO is equal to 1V8.
Power Consumption
Power Consumption
Typical
POWER DOWN
RESET# Low
TBD µA
SUSPEND
TBD µA
HOST OFF
TBD µA
SLEEP
TBD µA
ON, Radio OFF
TBD mA
BLE RX
TBD µA
BLE TX
TBD µA
WIFI RX 2G4
TBD µA
WIFI RX 5G
TBD µA
DTIM=1
TBD µA
DTIM=3
TBD µA
DTIM=5
TBD µA
DTIM=10
TBD µA
Table 4-2: WL865E4-P general power consumption table

WL865E4-P Module Hardware User Guide
1VV0301580 Rev. 1 Page 19 of 52 2019-04-02
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
18
266
mA
g
64 QAM
54 Mbps
18
237
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 4-3: WL865E4-P TX Table consumption @ 2.4 GHz

WL865E4-P Module Hardware User Guide
1VV0301580 Rev. 1 Page 20 of 52 2019-04-02
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
16
272
mA
a
BPSK
9 Mbps
16
269
mA
a
QPSK
12 Mbps
16
269
mA
a
QPSK
18 Mbps
16
267
mA
a
16 QAM
24 Mbps
16
269
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
16
271
mA
n
QPSK
MCS1_20
16
267
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 4-4: WL865E4-P TX Table consumption @5GHz
General Design Rules
It is recommended to make provision of at least 10 µF capacitors right next to the
VDD_WLAN and VDD_BLE pins, and 2.2 µF at each of the other power supply pins like
VDD_VIO and VUSB.