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.
Index 1. Product overview.................................................................................................................................................3 1.1 General Description..................................................................................................................................3 1.2 Features........................................................................................................................................................3 2. Parameters......
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.
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.
Unit：mm Pic 1-3 LSD4WF-2MD05101 module package dimension 4.
1 GND Ground pin 2 SWCLK Program download port 5 SWDIO Program download port 9 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.
RX current 50 Table1-2 mA LSD4WF-2MD05101 behavior of electricity 6.
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.
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.
(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.
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.
