JiangsuFulianCommunication Technology Co.,Ltd FLC8720FRA-B Product Specification ModelFLC8720FRA-B-01 Jiangsu Fulian Communication Technology Co., Ltd. Approved By Reviewed By Prepared By Version Date V1.4 2026.03.05 1 JiangsuFulianCommunication Technology Co.,Ltd FLC8720FRA-B Version History Date Version Updates 2024-12-20 2025-03-05 2025-04-30 2026-02-06 2026-03-05 V1.0 V1.1 V1.2 V1.3 V1.4 Initial Release Add timing diagrams, reference designs, and power consumption data Update module size Update packaging information Add description for series model FLC8720FRA-B-01 2 JiangsuFulianCommunication Technology Co.,Ltd FLC8720FRA-B Product Overview The FLC8720FRA-B module integrates the RTL8720DF dual-core Cortex-M33 & M23 processor platform (up to 200MHz), supporting IEEE 802.11a/b/g/n Wi-Fi and Bluetooth Low Energy (BLE 5.0) across 2.4 GHz and 5 GHz bands. With built-in 512KB RAM and 4MB Flash, it delivers high-speed data processing capabilities. Featuring an LGA package (13.212.52.0mm) and superior RF performance, it is widely used in IoT applications:
Consumer IP cameras Dashcams Entry-level smart TVs Robotic vacuums Drones Key Features Dual-band support: 2.4GHz (802.11b/g/n) & 5GHz (802.11a/n) Compact dimensions: 13.20.2 x(12.50.2) x(2.00.15)mm LGA package design Power input: 3.0V3.6V (Typ. 3.3V) Operating temperature: -40C to +85C 40MHz external crystal oscillator 3 JiangsuFulianCommunication Technology Co.,Ltd FLC8720FRA-B Technical Specifications Parameter Description Model Number FLC8720FRA-BFLC8720FRA-B-01 Module Type Wi-Fi 1T1R and BT/BLE Combo Module Main Chip Stands Data Rates Modulation Schemes Frequency Bands Security RTL8720DF 802.11 a/b/g/nBLE 5.0 802.11b1 Mbps2 Mbps5.5 Mbps11 Mbps 802.11a/g6 Mbps9 Mbps12 Mbps18 Mbps24 Mbps36 Mbps48 Mbps54 Mbps 802.11nHT20/HT40MCS 0~MCS 7 DBPSKDQPSKCCKBPSKQPSK16QAM64QAM GFSK 2.4 GHz2.400~2.4835 GHz 5 GHz5.150~5.850 GHz WPA-PSKWPA2-PSKWPA3-SAEAES-128DESSHA TrustZoneSecure Boot Interface SDIO\UART\USB\SPI\I2C\PWM Power Supply DC3.3V 3.0V - 3.6V Operation temp
-40~+85C Storage Temp
-20 ~ 95C Dimensions 13.20.2x12.50.2x(2.00.15)mm 4 JiangsuFulianCommunication Technology Co.,Ltd FLC8720FRA-B Hardware Architecture13.20.2x12.50.2x(2.00.15)mm Figure 2. FLC8720FRA-B Physical Dimensions Figure 3. FLC8720FRA-B-01 Physical Dimensions
*(FLC8720FRA-B-01 module without coaxial connector) Pin Layout 5 JiangsuFulianCommunication Technology Co.,Ltd FLC8720FRA-B Pin Definition Top View 6 JiangsuFulianCommunication Technology Co.,Ltd FLC8720FRA-B Table 1 Pin Definitions No. 1,2,1114,36~46,48~61 3 8 Name GND VCC CHIP_EN 31 30 19 20 5 6 12 13 16 17 18 21 22 23 26 27 28 33 34 35 47 4,7,9,10,15,24,25,29,3 2 UART1_TXD UART1_RXD UART2_TXD UART2_RXD GPIO10 GPIO9 GPIO15 GPIO14 GPIO3 GPIO2 GPIO1 GPIO0 GPIO6 GPIO8 GPIO7 GPIO5 GPIO4 GPIO16 GPIO17 GPIO11 ANT_WIFI/BT RESERVED Function GND Power:Vmax=3.6V Vmin=3.0V Highon, enable chip Low: off, chip power off UART1 TXD UART1 RXD UART2 TXD Notes UART UART2 RXD GPIO GPIO GPIO GPIO GPIO GPIO GPIO GPIO GPIO GPIO GPIO GPIO GPIO GPIO GPIO GPIO WiFi/BLE Ant NC 50 suspended 10 JiangsuFulianCommunication Technology Co.,Ltd FLC8720FRA-B Pin Pin Number 19 Name UART2_TXD GPIO PA7 20 21 18 17 16 28 27 22 26 23 6 5 35 30 31 13 12 33 34 UART2_RXD PA8 GPIO0 GPIO1 GPIO2 GPIO3 GPIO4 GPIO5 GPIO6 GPIO7 GPIO8 GPIO9 GPIO10 GPIO11 UART1_RXD UART1_TXD GPIO14 GPIO15 GPIO16 GPIO17 PA12 PA13 PA14 PA15 PA25 PA26 PA27 PA28 PA30 PB1 PB2 PB3 PB18 PB19 PB20 PB21 PB22 PB23 GPIO Functions Function 1 Function 2 Function 3 Function 4
SPI_MOSI SPI_MISO SPI_CLK SPI_CS USB_DM USB_DP
RREF
ADC4 ADC5 ADC6
SWDIO1
SWCLK1 SDIO_DATA2 SWCLK2 SDIO_DATA3 SWDIO2 SDIO_CMD SDIO_CLK SDIO_DATA0 SDIO_DATA1 PWM0 PWM1 PWM2 PWM3
I2C1_SCL I2C1_SDA
I2C_SCL I2C_SDA
11 JiangsuFulianCommunication Technology Co.,Ltd FLC8720FRA-B Laser marking instructions 12 JiangsuFulianCommunication Technology Co.,Ltd FLC8720FRA-B QR Code Content: SN-MAC, 15-digit SN + 12-digit MAC Address TYYMMDD00000001 T PRF PINor E(Ipex) YY:Yeare.g.,26 for 2026 MM:Month,e.g., 10 for October DD: Day,e.g.,08 for the 8th day 00000001:Cumulative serial number:0~99999999
:Module Model: FLC8720FRA-B,FLC8720FRA-B-01
:12-digit MAC Address of the module
:CMIIT ID:25J32F1KF720(M)
:Company Name:Jiangsu Fulian Communication Technology Co., Ltd. 13 JiangsuFulianCommunication Technology Co.,Ltd FLC8720FRA-B Timing diagram Symbol TPRDY TCORE TBOOT VPD_LOW VRST TRST Parameter VDDx ready time HS core power ready time HS MCU boot time Power-down low voltage Shutdown occurs after CHIP_EN lower than this voltage Required time that CHIP_EN lower than VRST Min. 0.1 200 0 0 1 Typ. 0.6 15 200 0 0 1 Max. 4.6
0.3 0.2 * VDDx
Unit ms ms ms V V ms APower on or deep sleep wake-up timing BPower off timing 14 JiangsuFulianCommunication Technology Co.,Ltd FLC8720FRA-B CPower down timing Power consumption data 15 JiangsuFulianCommunication Technology Co.,Ltd FLC8720FRA-B Reflow Profile Figure 3.FLC8720FRA-B Reflow Temperature Packaging method 13.1 Carrier tape dimensions 16 JiangsuFulianCommunication Technology Co.,Ltd FLC8720FRA-B Notes:
1.The cumulative tolerance of 10 edge holes must not exceed 0.2 mm. 2.Material specification: PS black, thickness 0.40 mm. 3.13-inch reel packaging length: 19.68 m. (Leading empty pocket length: 0.24 m; component packaging length: 19.20 m; trailing empty pocket length: 0.24 m.) 4.Total number of parts packed on a 13-inch reel: 820 pcs. (Leading empty pockets: 10 pcs; actual packed parts: 800 pcs; trailing empty pockets: 10 pcs.) 17 JiangsuFulianCommunication Technology Co.,Ltd FLC8720FRA-B 13.2 Packaging method The products are shipped on reels for ease of SMT processing by customers. Each reel includes a humidity indicator card and desiccant, is vacuum-sealed in an anti-static bag, and then packaged in a carton for shipment. Both the reels and the outer cartons are labeled with manufacturer labels and a QR code for inspection and outbound tracking, facilitating traceability and anti-counterfeiting measures. 18 JiangsuFulianCommunication Technology Co.,Ltd FLC8720FRA-B 6 pizza boxes are placed into one carton, and the carton is sealed. Each carton contains 4800 pieces. Figure 4. FLC8720FRA-B Packing 14Ordering Instructions Purchase Code Operating Antenna Temperature Range FLC8720FRA-B FLC8720FRA-B-01
-40~85
-40~85 4th Generation RF Coaxial Connector Pin Antenna 19 JiangsuFulianCommunication Technology Co.,Ltd FLC8720FRA-B ESD Protection: Mandatory during handling Figure 5. FLC8720FRA-B storage and ESD protection Support & Contact Jiangsu Fulian Communication Technology Co., Ltd. Address: Fulian Industrial Park, Lanling Road, Danyang Economic Zone, Jiangsu 212310, China Tel: +86-511-80760088 Email: [email protected] Business Hours: MonSat 8:0012:00 & 13:0017:00 (GMT+8) 20 JiangsuFulianCommunication Technology Co.,Ltd FLC8720FRA-B 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. 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. Note: The Grantee is not responsible for any changes or modifications not expressly approved by the party responsible for compliance. Such modifications could void the user's authority to operate the equipment. The device has been evaluated to meet general RF exposure requirement. To maintain compliance with FCC's RF exposure guidelines, the distance must be at least 20 cm between the radiator and your body, and fully supported by the operating and installation configurations of the transmitter and its antenna(s). Integration instructions for host product manufacturers according to KDB 996369 D03 OEM Manual v01 2.2 List of applicable FCC rules FCC Part 15 Subpart C 15.247 FCC Part 15 Subpart C 15.407 2.3 Specific operational use conditions 21 JiangsuFulianCommunication Technology Co.,Ltd FLC8720FRA-B The module can be used for mobile applications with a maximum antenna gain of 1.98dBi at 2.4 GHz and 3.20 dBi at 5 GHz.The host manufacturer installing this module into their product must ensure that the final composite product complies with the FCC requirements by a technical assessment or evaluation to the FCC rules, including the transmitter operation. The host manufacturer has to be aware not to provide information to the end user regarding how to install or remove this RF module in the user's manual of the end product which integrates this module. The end user manual shall include all required regulatory information/warning as shown in this manual. 2.4 Limited module procedures The device is a Single module and complies with the requirement of FCC Part 15.212. 2.5 Trace antenna designs Not applicable. The module has its own antenna, and doesn't need a host printed board micro strip trace antenna, etc. 2.6 RF exposure considerations The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction, and if RF exposure statement or module layout is changed, then the host product manufacturer is required to take responsibility of the module through a change in FCC ID or new application. The FCC ID of the module cannot be used on the final product. In these circumstances, the host manufacturer will be responsible for re-evaluating the end product (including the transmitter) and obtaining a separate FCC authorization. 2.7 Antennas Antenna Specification are as follows. Type of antenna: FPC Antenna. Gain of antenna: 2.4GHz @ 1.98 dBi Max. 5GHz @ 3.20 dBi Max.This device is intended only for host manufacturers under the following conditions: The transmitter module may not be co-located with any other transmitter or antenna. The module shall be only used with the internal antenna(s) that has been originally tested and certified with this module. The antenna must be either permanently attached or employ a "unique" antenna coupler. As long as the conditions above are met, further transmitter test will not be required. However, the host manufacturer is still responsible for testing their end-product for any additional compliance requirements required with this module installed (for example, digital device emissions, PC peripheral requirements, etc.). 22 JiangsuFulianCommunication Technology Co.,Ltd FLC8720FRA-B 2.8 Label and compliance information Host product manufacturers need to provide a physical or e-label stating "Contains FCC ID: 2AXS5-
FLC8720FRAB01" with their finished product. 2.9 Information on test modes and additional testing requirements Host manufacturer must perform test of radiated & conducted emission and spurious emission, etc. according to the actual test modes for a stand-alone modular transmitter in a host, as well as for multiple simultaneously transmitting modules or other transmitters in a host product. Only when all the test results of test modes comply with FCC requirements, then the end product can be sold legally. 2.10 Additional testing, Part 15 Subpart B disclaimer The modular transmitter is only FCC authorized for FCC Part 15 Subpart C 15.247 ,FCC Part 15 Subpart C 15.407 and that the host product manufacturer is responsible for compliance to any other FCC rules that apply to the host not covered by the modular transmitter grant of certification. If the grantee markets their product as being Part 15 Subpart B compliant (when it also contains unintentional-radiator digital circuit), then the grantee shall provide a notice stating that the final host product still requires Part 15 Subpart B compliance testing with the modular transmitter installed. 23