FCC ID: 2ACOE-WG225 WIFI Module

Skylab M&C Technology Co., Ltd Model No.: WG225 SDIO 802.11ac WIFI + UART BT2.1/4.2 Combo Module User Manual WG225 SDIO 802.11ac WIFI + UART BT2.1/4.2 Combo Module User Manual Document Information Title WG225 SDIO 802.11ac WIFI + UART BT2.1/4.2 Combo Module Datasheet Document type Datasheet Document number SL-18040036 Revision and date Disclosure restriction V1.04 Public 23-Jul-2018 1 / 15 WG225-UM-001,A/1 Skylab M&C Technology Co., Ltd Model No.: WG225 SDIO 802.11ac WIFI + UART BT2.1/4.2 Combo Module User Manual This document applicable to the following products Product name Type number Product status WG225 WG225(09308) Mass Production SKYLAB reserves all rights to this document and the information contained herein. Products, names, logos and designs described herein may in whole or in part be subject to intellectual property rights. Reproduction, use, modification or disclosure to third parties of this document or any part thereof without the express permission of SKYLAB is strictly prohibited. The information contained herein is provided as is and SKYLAB assumes no liability for the use of the information. No warranty, either express or implied, is given, including but not limited, with respect to the accuracy, correctness, reliability and fitness for a particular purpose of the information. This document may be revised by SKYLAB at any time. For most recent documents, visit www.skylab.com.cn. Copyright 2018, Skylab M&C Technology Co., Ltd. SKYLAB is a registered trademark of Skylab M&C Technology Co., Ltd in China. WARNING:

Herby, Skylab M&C Technology Co., Ltd declares that this SDIO WIFI moduleWG225 is in compliance with the essential requirements and other relevant provisions of Directive 2014/53/EU. Use the WG225 in the environment with the temperature between -20 and +70, This modular must be installed and operated with a minimum distance of 20cm between the radiator and user body 2 / 15 WG225-UM-001,A/1 Skylab M&C Technology Co., Ltd Model No.: WG225 SDIO 802.11ac WIFI + UART BT2.1/4.2 Combo Module User Manual Contents 1 General Description ............................................................................................................................................. 4 2 Applications ......................................................................................................................................................... 4 3 Features .............................................................................................................................................................. 4 Wi-Fi .......................................................................................................................................................... 4 Bluetooth ................................................................................................................................................... 5 4 Application Block Diagram ................................................................................................................................... 5 5 Module Pinout and Pin Description...................................................................................................................... 6 Module Pinout ................................................................................................................................................. 6 Pin Description ................................................................................................................................................ 6 6 PCB Footprint and Dimensions ........................................................................................................................... 8 7. Electrical Characteristics .................................................................................................................................... 9 8 Performance Specification ................................................................................................................................. 10 9 Manufacturing Process Recommendations ....................................................................................................... 13 10 Ordering Information ........................................................................................................................................ 13 11 Reversion History ............................................................................................................................................ 13 12 Contact Information ......................................................................................................................................... 14 3 / 15 WG225-UM-001,A/1 Skylab M&C Technology Co., Ltd Model No.: WG225 SDIO 802.11ac WIFI + UART BT2.1/4.2 Combo Module User Manual 1 General Description The WG225 module is WLAN and Bluetooth combination solution to support 1 x 1 802.11 a/b/g/n/ac WLAN standards and BT 4.2 + HS, enabling seamless integration of WLAN/BT and low-energy technology. The module requires only an external 3.3V power supply. The module is based on the single chip RTL8821. It supports a low-power SDIO 3.0 interface for WLAN and a UART/PCM interface for BT. Figure 1: WG225 Top View 2 Applications SDIO 2.4GHz/5GHz 802.11n WIFI SDIO 5GHz 802.11ac WIFI SDIO WIFI+ UART BT 2.1/4.2 3 Features Wi-Fi 802.11 a/b/g/n/ac, up to 433.3 Mbps data rate. 1T1R WLAN for 5 GHz 802.11ac, or 2.4 GHz/5 GHz 802.11n WLAN applications. SDIO 3.0 interface for WLAN 4 / 15 WG225-UM-001,A/1 Skylab M&C Technology Co., Ltd Model No.: WG225 SDIO 802.11ac WIFI + UART BT2.1/4.2 Combo Module User Manual Bluetooth Compliant with Bluetooth v2.1 + EDR Support Bluetooth 4.2 features Class-1, class-2 and class-3 transmitter without external power amplifier Enhanced power control Integrated internal Class 1,Class 2,and Class 3 PAs Support BT-WLAN coexistence RoHS compliance (Lead-free) Figure 2: WG225 Block Diagram 5 / 15 WG225-UM-001,A/1 Skylab M&C Technology Co., Ltd Model No.: WG225 SDIO 802.11ac WIFI + UART BT2.1/4.2 Combo Module User Manual 4 Module Pinout and Pin Description Module Pinout Figure 3: WG225 Pin Package Pin Description Pin No. Pin name Description Remark 1 2 3 4 5 6 7 8 9 WL_BT_ANT GND GND NC NC NC VDD 10 NC Ground RF port Ground NC NC NC NC BT_WAKE HOST wake-up Bluetooth device BT_HOST_WAKE Bluetooth device to wake-up HOST Main power voltage source input IN:3.135-3.465V 6 / 15 WG225-UM-001,A/1 Skylab M&C Technology Co., Ltd Model No.: WG225 SDIO 802.11ac WIFI + UART BT2.1/4.2 Combo Module User Manual I/O Voltage supply input IN:1.8V or3.3V 11 NC NC This pin can externally shutdown the WL_REG_ON module WLAN function, active low. WL_HOST_WAKE WLAN to wake-up HOST SDIO_DATA_2 SDIO data line 2 SDIO_DATA_3 SDIO data line 3 SDIO_DATA_CMD SDIO command line SDIO_DATA_CLK SDIO clock line SDIO_DATA_0 SDIO data line 0 SDIO_DATA_1 SDIO data line 1 External Low Power Clock input

(32.768KHz) PCM Data output PCM clock PCM data input PCM_SYNC PCM sync signal GND NC VDDIO NC LPO PCM_OUT PCM_CLK PCM_IN NC NC GND NC GND Ground NC NC NC NC NC Ground Ground This pin can externally shutdown the BT_REG_ON module BT function, active low. BAT_EN This pin can externally shutdown the 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 7 / 15 WG225-UM-001,A/1 Skylab M&C Technology Co., Ltd Model No.: WG225 SDIO 802.11ac WIFI + UART BT2.1/4.2 Combo Module User Manual module, active low. Ground NC NC NC NC GND NC NC NC NC 36 37 38 39 40 41 42 43 44 UART_RTS_N Bluetooth/FM UART interface UART_TXD Bluetooth/FM UART interface UART_RXD Bluetooth/FM UART interface UART_CTS_N Bluetooth/FM UART interface 5 PCB Footprint and Dimensions Figure 4: WG225 Dimensions 8 / 15 WG225-UM-001,A/1 Skylab M&C Technology Co., Ltd Model No.: WG225 SDIO 802.11ac WIFI + UART BT2.1/4.2 Combo Module User Manual Figure 5: WG225 PCB Footprint Dimensions 6. Electrical Characteristics a) Absolute Maximum Ratings Parameter Condition Min. Typ. Max. Unit Storage Temperature Range ESD Protection Maximum RFIN Supply Voltage Supply Voltage VESD VDD VDDIO

-40

0 0

-0.3 135 2000

+10 4.0 4.0 C V dBm V V V Voltage On Any I/O Pin VDD+0.3 Table7-1: Absolute Maximum Ratings WG225 series modules are Electrostatic Sensitive Devices and require special precautions while handling. 9 / 15 WG225-UM-001,A/1 Skylab M&C Technology Co., Ltd Model No.: WG225 SDIO 802.11ac WIFI + UART BT2.1/4.2 Combo Module User Manual ESD precautions The WG225 module contain highly sensitive electronic circuitry and are Electrostatic Sensitive Devices (ESD). Handling the WG225 module without proper ESD protection may destroy or damage them permanently. The WG225 module are electrostatic sensitive devices (ESD) and require special ESD precautions typically applied to ESD sensitive components. Proper ESD handling and packaging procedures must be applied throughout the processing, handling, transportation and operation of any application that incorporates the WG225 module. Dont touch the module by hand or solder with non-anti-static soldering iron to avoid damage to the module. b) Recommended Operation Ratings Parameter Symbol Min Typ. Max. Unit Operating Temperature Range Power Supply Power Supply TA VDD VCC

-20 3.135 1.71 3.3 3.3 70 3.465 3.46 C V V Table7-2: Operating Conditions 7 Performance Specification Hardware Features Model WG225 Antenna Type PCB Pin Chipset Solution RTL8821 Voltage 3.3V+/-5%

Dimension(LWH) 12.0mm*12.0mm*1.8mm Wireless Features 10 / 15 WG225-UM-001,A/1 Skylab M&C Technology Co., Ltd Model No.: WG225 SDIO 802.11ac WIFI + UART BT2.1/4.2 Combo Module User Manual Wireless Standards IEEE 802.11a/b/g/n/ac Frequency Range 2.412GHz--2.484GHz & 5.180GHz --5.825GHz IEEE 802.11b : 1,2,5.5,11Mbps IEEE 802.11g : 6,9,12,18,24,36,48,54Mbps Data Rates IEEE 802.11n : MCS0--MCS7 @ HT20 /2.4GHz band MCS0--MCS7 @ HT40

/2.4GHz band MCS0--MCS9 @ HT40

/5GHz band IEEE 802.11ac : MCS0--MCS9 @ VHT80

/5GHz band VHT80 MCS9 : -53dBm@10% PER(MCS9) /5GHz band HT40 MCS9 :

-60dBm@10% PER(MCS9) /5GHz band Receiver Sensitivity HT40 MCS7 :

-65dBm@10% PER(MCS7) /2.4GHz band HT20 MCS7 :

-66dBm@10% PER(MCS7) /2.4GHz band 54M:

-71dBm@10% PER 11M:

-83dBm@ 8% PER DSSS (DBPSK, DQPSK, CCK) Modulation Technique OFDM (BPSK, QPSK, 16-QAM, 64-QAM, 125-QAM, 256-QAM) Wireless Security WPA/WPA2, WEP, TKIP and AES, WPS2.0, WAPI IEEE 802.11ac:

111.5dBm @HT80 MCS9 /5GHz band IEEE 802.11ac:

131.5dBm @HT80 MCS0 /5GHz band IEEE 802.11n:

121.5dBm @HT20/40 MCS7 /5GHz band Transmit Power IEEE 802.11n:

141.5dBm @HT20/40 MCS0 /5GHz band IEEE 802.11n:

142dBm @HT20/40 MCS7 /2.4GHz band IEEE 802.11g:

162dBm @54Mbps IEEE 802.11b:

182dBm @11Mbps Others Certification RoHS Environment Operating Temperature: -20~70 Storage Temperature: -40~135 11 / 15 WG225-UM-001,A/1 Skylab M&C Technology Co., Ltd Model No.: WG225 SDIO 802.11ac WIFI + UART BT2.1/4.2 Combo Module User Manual Operating Humidity: 10%~90% non-condensing Storage Humidity: 5%~90% non-condensing 8 Packaging Specification WG225 modules are shipped in reel and with 1200 units per reel. Each tray is dry package. Figure 6: WG225 Packaging 12 / 15 WG225-UM-001,A/1 Skylab M&C Technology Co., Ltd Model No.: WG225 SDIO 802.11ac WIFI + UART BT2.1/4.2 Combo Module User Manual 9 Manufacturing Process Recommendations Figure 7: WG225 Typical Lead-free Soldering Profile NoteThe final soldering temperature chosen at the factory depends on additional external factors like choice of soldering pastesizethickness and properties of the baseboardetc. Exceeding the maximum soldering temperature in the recommended soldering profile may permanently damage the module. 10 Ordering Information Module No. Antenna Connector Type WG225 PCB PIN 11 Reversion History Revision Description Approved Date V1.01 V1.02 Initial Release George He 2018.04.10 Update Wireless Features George He 2018.05.28 V1.03 Update PCB Footprint Dimensions George He 2018.05.20 13 / 15 WG225-UM-001,A/1 Skylab M&C Technology Co., Ltd Model No.: WG225 SDIO 802.11ac WIFI + UART BT2.1/4.2 Combo Module User Manual V1.04 Adding Packaging Specification George He 2018.07.23 Address: 6 Floor, No.9 Building, Lijincheng Scientific & Technical park, Gongye East Road, 12 Contact Information Skylab M&C Technology Co., Ltd. Longhua District, Shenzhen, Guangdong, China Phone: 86-755 8340 8210Sales Support Phone: 86-755 8340 8510Technical Support Fax: 86-755-8340 8560 E-Mail: technicalsupport@skylab.com.cn Website: www.skylab.com.cn www.skylabmodule.com 14 / 15 WG225-UM-001,A/1 Skylab M&C Technology Co., Ltd Model No.: WG225 SDIO 802.11ac WIFI + UART BT2.1/4.2 Combo Module User Manual FCC Statement FCC standards: FCC CFR Title 47 Part 15 Subpart C Section 15.247 and FCC CFR Title 47 Part 15 Subpart E Section 15.407: 2016 External antenna with gain BT/BLE/2.4GWifi: 2dBi 5G Wifi: 4dBi FCC Regulatory Compliance:

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. Warning: changes or modifications not expressly approved by the party responsible for compliance could void the users authority to operate the equipment. If power exceeds the limit and the distance(Over 20cm distance in actual use between the device and user) is compliance with the requirement RF Exposure Compliance:

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20cm between the radiator and any part of your body. Notice to OEM integrator If the FCC ID is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. The end product shall haves the words Contains Transmitter Module FCC ID: 2ACOE-WG225. The device must be professionally installed. The intended use is generally not for the general public. It is generally for industry/

commercial use. The connector is within the transmitter enclosure and can only be accessed by disassembly of the transmitter that is not normally required. The user has no access to the connector. Installation must be controlled. Installation requires special training. Any company of the host device which installs this modular with unlimited modular approval should perform the test of radiated & conducted emission and spurious emission, etc. according to FCC part 15C: 15.407 and15.203 & 15.207, 15B Class B requirement, only if the tests result comply with FCC part 15C: 15.407 and 15.203 & 15.207, 15B Class B requirement, then the host can be sole legally. When the module is installed inside another device, the user manual of the hose contain below 1) This device may not cause harmful interference. 2) This device must accept any interference received, including interference that may cause undesired operation 15 / 15 WG225-UM-001,A/1

Skylab M&C Technology Co., Ltd. Agent Authorization Company: Skylab M&C Technology Co., Ltd. Address: 6/F, Building 9, Lijincheng park, Gongye East Rd, Longhua St, Longhua District, Shenzhen 518109, China Product Name: WIFI Module Model Number(s): WG225 Product Description: WIFI Module We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature:

Date: 2020-10-20 Name:

Sam Chen Title:

manager Company: Skylab M&C Technology Co., Ltd.

Skylab M&C Technology Co., Ltd. Federal Communications Commission Equipment Authorization Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2020-10-20 Subject: WIFI Module Company name: Skylab M&C Technology Co., Ltd. FCC ID: 2ACOE-WG225 Dear Sir/Madam, This letter includes the FCC application requirements for Modular Transmitter Approval Request for;-

FCC KDB 996369 D01 Module Certification Guide v02; and FCC KDB 996369 D03 OEM Manual v01 In accordance with 47CFR 15.212 Modular Transmitters and KDB 996369 D01 Module Equip Auth Guide v02. FCC ID: 2ACOE-WG225 has been examined against the following requirements. Requirement per 15.212 and KDB 996369 D01 The radio elements must have the radio frequency circuitry shielded. Physical components and tuning capacitor(s) may be located external to the shield, but must be on the module assembly. The module must have buffered modulation/data inputs to ensure that the device will comply with Part 15 requirements with any type of input signal. The module must contain power supply regulation on the module. Explanation from Grantee

(do not write yes/no, but explain why product complies/how it is achieved) The modular have RF own shielding The modular transmitter have buffered modulation/data inputs The modular transmitter have its own power supply regulation. The module must contain a permanently attached antenna, or contain a unique antenna connector, and be marketed and operated only with specific antenna(s), per 15.203, 15.204(b), 15.204(c), 15.212(a), 2.929(b). The module must demonstrate compliance in a stand-alone configuration. The modular has a External Antenna, which has a unique antenna connector. The module compliance in a stand-alone configuration. The module must be labeled with its permanently affixed FCC ID label, or use an electronic display (see KDB Publication 784748). The module must comply with all specific rules applicable to the transmitter, including all the conditions provided in the integration instructions by the grantee. The module must comply with RF exposure requirements The FCC identification number can put on the modular with either a permanently affixed label The instructions will be provided and apply to a complete transmitter and comply with specific rule. The total power density of modular transmitter final configuration comply with FCC RF Exposure FCC Modular Approval Request Rev 3.0 Skylab M&C Technology Co., Ltd. Name: Sam Chen Date: 2020-10-20 Title: manager Signature of applicant FCC Modular Approval Request Rev 3.0

Skylab M&C Technology Co., Ltd. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Subject; Request for Long Term Confidentiality FCC ID: 2ACOE-WG225 Date: 2020-10-20 To Whom It May Concern, Pursuant to the provisions of the Commissions rules Title 47 Sections 0.457 and 0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram FCC SOFTWARE SECURITY DESCRIPTION Operational Description Tune-up Procedure It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature:

Name:Sam Chen Title:manager

Skylab M&C Technology Co., Ltd. FCC Software Configuration Control Declaration Date: October 22, 2020 Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Attn: OET Dept. Product/ Model Number: WIFI Module / WG225 Regarding FCC Country Code Selection guidelines identified in KDB 594280 D01v02r01. All applications for equipment authorization for transmitters that can have radio parameters, or other technical parameters, reported to the Commission set by software must have an attestation indicating that no third party will have software, or configuration control, to program the device out of compliance of the technical rules under which it has been certified. We declare that no third party will have software, or configuration control, to program the device out of compliance of the technical rules under which it has been certified. Name:Sam Chen Title: manager Date: 2020-10-20 Signature of applicant FCC Software Configuration Control Declaration Rev1.1