Lierda Science and Technology Group LSD4WF WiFi Module User Manual

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Document ID	2674283
Application ID	fq+gK98QlKOzjePTO8joJg==
Document Description	User Manual
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Document Type	User Manual
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Date Submitted	2015-07-10 00:00:00
Date Available	2015-07-10 00:00:00
Creation Date	2015-05-25 14:20:17
Document Lastmod	2015-07-06 14:15:30
Document Title	微软用户
Document Creator	WPS Office 个人版
Document Author:	微软用户

Lierda Science & Technology Ltd
LSD SCIENCE & TECHNOLOGY CO., LTD.
LSD4WF-2MD05101
Low Power Wi-Fi Module User Manual
FCC ID:N8NLSD4WF
Model ：LSD4WF-2MD05101
Name ：Wi-Fi Module
Revision ：v1.0
Index
1. Product overview.................................................................................................................................................3
1.1 General Description..................................................................................................................................3
1.2 Features........................................................................................................................................................3
2. Parameters.............................................................................................................................................................4
3. Package.................................................................................................................................................................. 4
4. Pin definition.........................................................................................................................................................5
5. Behavior of electricity.........................................................................................................................................6
6. Typical application...............................................................................................................................................7
7. Reference design................................................................................................................................................. 7
8. Developing tool................................................................................................................................................... 8
1. Product overview
1.1 General Description
LSD4WF-2MD05101 is a Wi-Fi module for any electronic device to achieve networking
capabilities. The module is fully in line with the 802.11b/g/n international standard specification, the
internal integrated high performance Cortex M4 and Wi-Fi chip make it easy to access the serial port
equipment or MCU control equipment to network, so as to realize wireless networking.
Built-in TCP/IP protocol stack, supports STA/AP/STA+AP coexistence working modes, supports
802.11b/g/n protocol, supports wireless local upgrade and OTA remote firmware upgrade.
32.8mmx23.1mmx3.2mm, using the stamp hole package, built-in board PCB antenna.
1.2 Features

Confirm with 802.11b/g/n protocol.

Built-in high performance M4 core MCU, highest frequency 100MHz, high speed data
processing ability.

USART/GPIO/SPI/PWM multiple interface.

QJoine high speed link configuration.

Support STA/AP/STA+AP coexist work mode.

Support WPA/WPA2/WEP encryption.

Support wireless, Web page and OTA remote hardware upgrading.

Support multiple net protocol communication.

Provide abundant AT＋ instruction set configuration.

Optional built-in on board PCB antenna and external antenna interface.

Dimension：32.8mmx23.1mmx3.2mm, Stamp hole paste.

3.3V single power supply.

CE/FCC.

RoHS.
2. Parameters
Parameters
Standard
802.11 b/g/n
Frequency
2.412GHz-2.462GHz
802.11b:+9.82dBm(@11Mbps)
Wireless
Parameters
Hardware
Parameters
Software
parameters
Emitting power
802.11g:+8.27dBm(@54Mbps)
802.11n:+8.12dBm(@HT20,MCS7)
802.11b: -83 dBm (@1Mbps ,CCK)
Receiving
Sensitivity
802.11g: -74dBm (@54Mbps, OFDM)
Antenna
Built-in：On board PCB antenna
Working Voltage
3.3V（3.0V~3.6V）
Working Current
Quiescent Current：~20mA
Emitting peak Current：~200mA
Working
Temperature
-40℃~ 85℃
Hardware
Interface
USART/GPIO/SPI/PWM
Dimension
32.8mmx23.1mmx3.2mm
Wireless network
type
STA/AP/STA+AP
Security
Mechanism
WEP/WPA-PSK/WPA2-PSK
Encryption
WEP/AES/TKIP
Hardware
upgrading
Local wireless upgrading/ Web page
upgrading/ Remote upgrading
Network Protocol
IPv4, TCP/UDP/FTP/HTTP
User
Configuration
QJoine Configuration，AT+instruction，Web
Pic1-1
802.11n: -61dBm (@HT20, MCS7)
page
LSD4WF-2MD05101 Basic Parameters
3. Package
Pic 1-2
LSD4WF-2MD05101 Front and back
Unit：mm
Pic 1-3 LSD4WF-2MD05101 module package dimension
4. Pin definition
Pic 1-4 LSD4WF-2MD05101 Module pin layout
Pin
Pin definition
Function
1
GND
Ground pin
SWCLK
Program download port
SWDIO
Program download port
VCC
17
GND
Ground pin
20
GPIO3/USART_CK/TIM1_CH1
Multiplex pin:
IO port/USART / Timer
25
WKUP
Module wake up
27
GPIO1/USART_CTS/TIM1_CH4/SPI4_MISO
28
GPIO9/SPI4_SCK/TIM1_CH1N
29
GPIO8/SPI4_NSS/TIM1_BKIN
30
GPI07/ADC1_1/TIM2_CH2&TIME5_CH5/SPI4_MOSI
31
VCC
Power supply pin (DC_3.3V)
32
GND
Ground pin
34
VCC
Power supply pin（DC_3.3V）
39
USART_TX
USARTport Data sendng port
40
GPIO2/USART_RTS/TIM1_ETR
Multiplex pin：
IOport/USARTport/timer
41
USART_RX
USARTportdata receiver
42
GPIO1/USART_CTS/TIM1_CH4/SPI4_MISO
Multiplex pin：
IOport/USARTport/timer/SPIport
43
GPI04/ADC1_9/TIM3_CH4/nLink
Multiplex pin：IOport/ADC/timer
44
GPI05/ADC1_8/TIM3_CH3/nReady
Multiplex pin：IOport/ADC/timer
45
GPI06/ADC1_4/nReload
Multiplex pin:IOport/ADC
47
RST/nReset
Reset pin
48
GND
Ground pin
Table 1-1
Power supply pin (DC_3.3V)
Multiplexed pin：
IO port/USART /timer/SPI port
Multiplex pin：
IO port/SPI port/timer
Multiplex pin：
IO port/SPI port/timer
Multiplex pin：
IO port/ADC/timer/SPI port
LSD4WF-2MD05101 Module pin definition
5. Behavior of electricity
Parameters
Minimum
Typical value
Maximum
Unit
Working voltage
3.0
3.3
3.6
Standby current
mA
Static current
20
mA
TX current
200
mA
RX current
50
Table1-2
mA
LSD4WF-2MD05101 behavior of electricity
6. Typical application
Pic1-5 LSD4WF-2MD05101 Typical circuit connection
Pin
State
Remark
NRST411
Input, valid in low level
Module reset pin with internal pull resistor
nlink
Output (connected to LED)
Check the network state of module or indication
for batch upgrade or configuration
nReload
Input, valid in low level
Connect button to chip pin for factory setting
restoring
Sleep_RQ
Input, standby control
Connect button to chip pin for module dormancy
managing
Sleep_ON
Output, standby state indication
Indication of dormancy state, connected with
LED
USART_TX/USAR
T_RX
Serial port transceiver port
Serial port transceiver port
Table 1-3 Connection introduction of cardinal pin
7. Reference design
PCB onboard antenna is built in LSD4WF-2MD05101 module, users should using onboard antenna
design need to be cautious that：
1, No components or GND on antenna area of user board
2, Keep antenna away from metal, stay over 10mm away from surrounding higher components.
3, Antenna can’t be covered by metal case and it should be over 10mm away from plastic casing.
During specific design, users can consult the Lierda technical engineer to assist in the place of the
module and related Layout.
8. Developing tool
Lierda would provide a complete set of LSD4WF-2MD05101 development kit for customers to get
familiar with the application and development of the module. Users can configure and debug the
parameters of the LSD4WF-2MD05101 module through the USB interface and the function test. This
development board can directly get power from the USB interface, it also support lithium battery and DC
5~18V DC current supply, convenient for the user.
Pic 1-6 Developing board (front)
Pic 1-7 Developing board (back)
External interface introduction, table: 1-4
Function
External
interface
LED
indication
light
Button
Item
Description
USB2TTL
UART to USB debugging port, can be used for
power supply
USB DEBUG
USB2.0 debugging interface(reserved)
DC5-18V
5~18V DC input
COM1
RS232 interface
RS485
RS485 interface
JMP1
Preserve
JMP2
Preserve
JMP3
4Pin USB and RS232 debugging choosing port, left
choose USB
JPM6
3Pin RS485 与 RS232 debugging choosing port, no
wire jumper choose RS232
EXT_PORT
LSD4WF-2MD05101 GPIO interface expand
JTAG
JTAG data debugging interface
Battery
Lithium battery supply interface
Power
3.3V power indication
Sleep_ON
Module standby indication
On：Module is in standby mode
Off：Module is working
nReady
Module start or updating ready indication
On：Module started up
Off：Module not started
Blink：Remote updating, blink frequency in
proportion to download speed
nLink
Module connection indication
On：Wi-Fi connected；
Off：Wi-Fi unconnected；
WPS
Function reserve
nReset
Reset
Sleep_RQ
Function reserve
nReload
Press button for over 4 seconds to restore to factory
settings.
Table 1-4 External interface introduction of LSD4WF-2MD05101developing board
(OEM) Integrator has to assure compliance of the entire end‐product
incl. the integrated RF Module. Additional measurements (15B) and/or equipment authorizations
(e.g Verification) may need to be addressed depending on co‐location or simultaenous
transmission issues if applicable.
Integrator is reminded to assure that these installation instructions
will not be made available to the end‐user of the final host device.
With the low output power, this RF Module meets the FCC SAR exemption
and can be therefore integrated into any (portable, mobile, fixed) host device.
The final host device, into which this RF Module is integrated" has to be labelled
with an auxilliary lable stating the FCC ID of the RF Module, such as
"Contains FCC ID: N8NLSD4WF".
Depending on the size of the final end‐product, the §15.19 FCC statement
"This device complies with part 15 of the FCC rules. Operation is subject to the following two
conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including
interference that may cause undesired operation."
should be placed also on the device or alternatively within a prominent location of the users
manual
The §15.21 "Changes or modifications to this unit not expressly
approved by the party responsible for compliance could
void the user’s authority to operate the equipment." statement has to be included in a prominent
location of the users manual
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses and can radiate
radio frequency energy and, if not installed and used in accordance with the instructions, may cause
harmful interference to radio communications. However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following measures:
—Reorient or relocate the receiving antenna.
—Increase the separation between the equipment and receiver.
—Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
—Consult the dealer or an experienced radio/TV technician for help.

---

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