WK8887 Jan.18th.2023 KAGA FEI Co., Ltd. FCC ID : 2A6NFWK8887 Wireless LAN + Bluetooth Module WK8887 User Manual Please note that this user manual should not be provided to end-users. KAGA FEI Co., Ltd. 1/25 WK8887 Jan.18th.2023 KAGA FEI Co., Ltd. FCC ID : 2A6NFWK8887 The Bluetooth word mark and logos are owned by the Bluetooth SIG, Inc. and any use of such marks by KAGA FEI CO., LTD. is under license. ATTENTION: This module requires device drivers that are under Japan export control. Depending on the customers country and application (e.g. weapons), KAGA FEI may not be able to provide these drivers to all customers. Please contact your local KAGA FEI sales office for additional information. To contact your local sales office and for additional product information, please visit https://www.kagafei.com/jp/eng/. KAGA FEI Co., Ltd. 2/25 WK8887 Document constituent list Control name General Items Absolute maximum ratings Electrical characteristics Circuit schematic Outline / Appearance Pin Layout Handling Precaution Control No. KM-AG-A223020 KM-AM-A223020 KM-AE-A223020 KM-MC-A223020 KM-AD-A223020 KM-BA-A223020 Jan.18th.2023 KAGA FEI Co., Ltd. FCC ID : 2A6NFWK8887 Document Page 1/6- 6/6 1/1 1/6 6/6 1/1 1/3 - 3/3 1/3 - 3/3 1/2 2/2 KAGA FEI Co., Ltd. 3/25 WK8887 Control No. KM-AG-A223020 (1/6) Scope This specification (Specification) applies to the Wireless LAN and Bluetooth module (Product) manufactured by KAGA FEI Co., Ltd. (KAGA FEI) Control name General Items Jan.18th.2023 KAGA FEI Co., Ltd. FCC ID : 2A6NFWK8887 1. Product Number: WK8887 2. Function: Radio frequency transceiver Module. (IEEE802.11ac/a/b/g/n and Bluetooth4.2 standard) 3. Application: Tablets, Home audio/Video systems, Mobile routers, Handy Terminal, Game, Audio-visual equipment, Digital home electrical appliance, Mobile printer. 4. This product conforms to RoHS Directive. 5. Outline: 56pin leadless chip carrier. 6. Marking: Part number and Lot number. 7. Features:
-IEEE802.11ac/a/b/g/n and Bluetooth4.2 standard
-Interface: SDIO3.0, PCM
-Embedded MPU for reducing loads on host processor 8. Security: TKIP, WEP, AES, CCMP, CMAC, WAPI, WPA/WPA2(64bit/128bit) 9. Packing: Packaging method: Reel Packaging unit: TBD pieces/Reel Package Material: PPE/ PET/AL/NY/PE 10. Mount: SMD Type 11. Note a. This Product is not designed to be radiation-resistant. Please do not expose Product to radiation. b. The operating conditions of this Product are as shown in this Specification. KAGA FEI shall not be liable for any failure and/or abnormality caused by using this Product beyond its specified operating conditions. c. The Product mentioned in this Specification is manufactured for use in consumer products. Before using this Product in any special equipment (e.g. medical, space, aircraft, disaster prevention) where higher safety and reliability are required, the applicability and suitability of this Product must be fully evaluated by the customer at its sole risk to ensure correct and safe operation of those special equipment. If this Product is used in general electronics equipment, the safety function must also be thoroughly evaluated at the customers sole risk, and when necessary, a protective circuit shall be added during the design stage. d. i) Even though KAGA FEI sufficiently inspects and verifies the quality of the firmware incorporated in this Product (Incorporated Software), it is recommended that customers fully check and confirm by the start of mass production that (1) no bugs, defects or other failures are included in the Incorporated Software, (2) no bugs, defects or other failures are caused by installing this Product with the Incorporated Software into the customers product, (3) the Incorporated Software fully meets customers intended use. ii) Please note that KAGA FEI is not responsible for any failure from bugs or defects in the Incorporated Software. e. Depending on the radio environment and operating conditions, communication between this Product and others devices may not be established or maintained. KAGA FEI Co., Ltd. 4/25 WK8887 Control No. KM-AG-A223020 (2/6) Control name General Items Jan.18th.2023 KAGA FEI Co., Ltd. FCC ID : 2A6NFWK8887 f. This Product operates at 2.4GHz and 5GHz unlicensed ISM band. If this Product is used around the other wireless devices that operate in same frequency band, there is a possibility that interference may occur. If interference occurs, please stop operation of the other devices, or relocate this Product, or do not use this Product around the other wireless devices. g. If this Product is incorporated into your device, please thoroughly evaluate its operation before mass production. h. Caution for Export Control This Product may be subject to governmental approvals, consents, licenses, authorizations, declarations, filings, and registrations for export or re-export as required by Japanese Foreign Exchange and Foreign Trade Law (including related laws and regulations) and/or any other countrys applicable laws or regulations related to export control. If this Product will be exported or re-exported, it is strongly recommended that customers check and confirm the necessary procedures to export or re-export this Product as required by applicable laws and regulations, and if necessary, customers must obtain the necessary and appropriate approvals or licenses from governmental authority at their own risk and expense. KAGA FEI Co., Ltd. 5/25 WK8887 Control No. KM-AG-A223020 (3/6) Control name General Items Jan.18th.2023 KAGA FEI Co., Ltd. FCC ID : 2A6NFWK8887 FCC Regulatory Information 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. a) Please use the specified supply voltage in "Recommendation operating range" when installing this product. The final products must contain a power supply regulator and must ensure the applied voltage to this product is adjusted to always be within the operating voltage range. b) Please ensure and control your host product not to transmit on channels 12 and 13. c) Data transmission is inevitably initiated by software of host devices with the exception that several special packets are transmitted by the MAC. However, data transmission is terminated by end of packets in any cases. Therefore, it is RF transmitted only while packets are being transmitted. This modular transmitter automatically discontinues transmission in case of either absence of information to transmit or operational failure because RF parts will not be ON in neither cases. d) The device driver/firmware for this product is downloaded from a limited access web site provided by the device manufacturer and is implemented specifically for this product. The ID/password required to access the web site can be obtained after the conclusion of a contract with the device manufacturer. e) The antenna used for this transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. f) Frequency Tolerance: 2.4GHz Band 25 ppm, 5GHz Band 20 ppm g) The device is designed to use the antennas listed below. Do not modify the antenna or any other part of the module. Any modifications will invalidate the modular certifications and require new approvals for the host system. Model No. Antenna Type Frequency Antenna Gain lmpedance AH104N2450D1 Monopole 2402 - 2480 MHz 2.1 dBi 50 5180-5825 MHz 2.4 dBi h) CAUTION:
-Changes or modifications not expressly approved by the party responsible for compliance could void the use's authority to operate the equipment KAGA FEI Co., Ltd. 6/25 WK8887 Control No. KM-AG-A223020 (4/6) Control name General Items Jan.18th.2023 KAGA FEI Co., Ltd. FCC ID : 2A6NFWK8887
-To maintain compliance with FCCs RF exposure guidelines, use only the supplied antenna. Unauthorized antenna, modification, or attachments could damage the transmitter and may violate FCC regulations.
-To maintain compliance with FCC's RF exposure guidelines, this equipment should be installed and operated with minimum distance 20cm between the radiator and your body.
-This product is authorized under the following conditions in USA and Canada. Please do not use this equipment outside the approval range. 5180 5240 MHz : Master / Client device 5260 5320 MHz : Client device 5500 5700 MHz : Client device 5745 5825 MHz : Master / Client device The following channels are available for this equipment:
For 2402-2480MHz (Bluetooth BDR/EDR, Bluetooth Low Energy) 79 channels are provided for Bluetooth BDR/EDR : 078ch 40 channels are provided for Bluetooth Low Energy : 039ch For 2412-2462MHz (IEEE802.11b/g/n-20) 11 channels are provided for 802.11b/g/n(HT20) : 1-11ch For 2422-2452MHz (IEEE802.11n-40) 7 channels are provided for 802.11n(HT40) : 3-9ch For 5180-5240MHz 4 channels are provided for 802.11a, 802.11n(HT20), 802.11ac(VHT20) : 36ch, 40ch, 44ch, 48ch 2 channels are provided for 802.11n(HT40), 802.11ac(VHT40) : 38ch, 46ch 1 channel is provided for 802.11ac(VHT80) : 42ch For 5260-5320MHz 4 channels are provided for 802.11a, 802.11n(HT20), 802.11ac(VHT20) : 52ch, 56ch, 60ch, 64ch 2 channels are provided for 802.11n(HT40), 802.11ac(VHT40) : 54ch, 62ch 1 channel is provided for 802.11ac(VHT80) : 58ch KAGA FEI Co., Ltd. 7/25 WK8887 Control No. KM-AG-A223020 (5/6) Control name General Items Jan.18th.2023 KAGA FEI Co., Ltd. FCC ID : 2A6NFWK8887 For 5500-5700MHz 11 channels are provided for 802.11a, 802.11n(HT20), 802.11ac(VHT20) : 100ch, 104ch, 108ch, 112ch, 116ch, 120ch, 124ch, 128ch, 132ch, 136ch, 140ch 5 channels are provided for 802.11n(HT40), 802.11ac(VHT40) : 102ch, 110ch, 118ch, 126ch, 134ch 2 channels are provided for 802.11ac(VHT80) : 106ch, 122ch For 5745-5825MHz 5 channels are provided for 802.11a, 802.11n(HT20), 802.11ac(VHT20) : 149ch, 153ch, 157ch, 161ch, 165ch 2 channels are provided for 802.11n(HT40), 802.11ac(VHT40) : 151ch, 159ch 1 channel is provided for 802.11ac(VHT80) : 155ch i) Please label FCC ID at any location on the exterior of your product. Please indicate FCC ID by either one of the following method.
-Contains Transmitter Module FCC ID: 2A6NFWK8887
-Contains FCC ID: 2A6NFWK8887 j) Please include the following statements in the user manual of the host device of this module;
FCC CAUTION Changes or modifications not expressly approved by the party responsible for compliance could void the users authority to operate the equipment. Compliance with FCC requirement 15.407(c) Data transmission is always initiated by software, which is passed down through the MAC, through the digital and analog baseband, and finally to the RF chip. Several special packets are initiated by the MAC. These are the only ways the digital baseband portion will turn on the RF transmitter, which it then turns off at the end of the packet. Therefore, the transmitter will be on only while one of the aforementioned packets is being transmitted. In other words, this device automatically discontinues transmission in case of either absence of information to transmit or operational failure. Frequency Tolerance: 25 ppm (2.4GHz) Frequency Tolerance: 20 ppm (5GHz) This transmitter must not be co-located or operated in conjunction with any other antenna or transmitter. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment and meets the FCC radio frequency (RF) Exposure Guidelines. This equipment should be installed and operated keeping the radiator at least 20cm or more away from persons body. KAGA FEI Co., Ltd. 8/25 WK8887 Control No. KM-AG-A223020 (6/6) Control name General Items This device complies with below part 15 of the FCC Rules. Part 15 Subpart C Part 15 Subpart E Jan.18th.2023 KAGA FEI Co., Ltd. FCC ID : 2A6NFWK8887 The modular transmitter is only FCC authorized for the specific rule parts (i.e., FCC transmitter rules) listed on the grant (FCC Part 15.247), and 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. The final host product still requires Part 15 Subpart B compliance testing with the modular transmitter installed. KAGA FEI Co., Ltd. 9/25 WK8887 Control No. KM-AM-A223020 (1/1) Control name Absolute maximum ratings Jan.18th.2023 KAGA FEI Co., Ltd. FCC ID : 2A6NFWK8887 Absolute maximum ratings Item Supply voltage 1 Supply voltage 2 Supply voltage 3 Symbol VBAT VDD33 VIO Supply voltage 4 VIO_SD Supply voltage 5 VIO_RF Recommendation operating range Item Supply voltage 1 Supply voltage 2 Supply voltage 3 Symbol VBAT VDD33 VIO Supply voltage 4 VIO_SD Supply voltage 5 Operation temperature range VIO_RF Taopr Storage temperature range Tstg Min. Rating Typ. 3.3 3.3 1.8 2.5 3.3 1.8 3.3 3.3 Rating Typ. 3.3 3.3 1.8 2.5 3.3 1.8 3.3 3.3 25
Min. 2.7 3.0 1.62 2.25 3.0 1.62 3.0 3.0
-30
-40 Max. 4.5 4.0 2.2 3.0 4.0 2.2 4.0 4.0 Max. 4.5 3.6 1.98 2.75 3.6 1.98 3.6 3.6 85 85 Unit Remark V V V V V V V V Unit Remark V V V V V V V V Degrees C Degrees C KAGA FEI Co., Ltd. 10/25 WK8887 Control No. KM-AE-A223020 (1/6) Control name Electrical characteristics Jan.18th.2023 KAGA FEI Co., Ltd. FCC ID : 2A6NFWK8887 Power consumption The Specification applies for Topr.= 25 degrees C, Supply voltage=Typical voltage No. Parameter Condition Min. Typ. Max. Unit Remark 1 2 3 4 5 6 7 8 9 10 11 12 Power consumption1 Power consumption2 Power consumption3 Power consumption4 Power consumption5 Power consumption6 Power consumption7 Power consumption8 Power consumption9 Power consumption10 Power consumption11 Power consumption12 13 Power consumption13 14 Power consumption14 Tx: 12dBm 11b, 11Mbps Rx 11b, 11Mbps Tx: 12dBm 11g, 54Mbps Rx 11g, 54Mbps Tx: 10dBm, 40MHz BW 11n, MCS7, 2.4GHz Rx, 40MHz BW 11n, MCS7, 2.4GHz Tx: 12dBm 11a, 54Mbps Rx 11a, 54Mbps Tx: 10dBm , 40MHz BW 11n, MCS7, 5GHz Rx, 40MHz BW 11n, MCS7, 5GHz Tx: 8dBm, 80MHz BW 11ac, MCS9, 5GHz Rx, 80MHz BW 11ac, MCS9, 5GHz Power save mode
(DTIM=1,Beacon_interval
=100ms) Symbo l Pc1 Pc2 Pc3 Pc4 Pc5 Pc6 Pc9 Pc10 Pc11 Pc12 Pc13 Pc14 Pc15 488 201 297 211 211 251 363 244 244 286 321 358 5.0 mW Duty=46.8%
mW mW Duty=25.4%
mW mW Duty=2.2%
mW mW Duty=25.4%
mW mW Duty=2.4%
mW mW Duty=1.4%
mW mW mW Deep Sleep Pc16 1.8
*The power consumption might fluctuate with the condition of radio communication, host performance and test circuit.
*The Typ. is a reference value. The value may change depending on the evaluation. DC Specifications Digital Pad Ratings (SDIO, PCM, GPIO) (VIO=1.8/ 2.5/ 3.3V) No. Parameter Condition Symbol Min. Typ. Max. Unit Remark 1 2 Input High Voltage Input Low Voltage 3 Output High Voltage 4 Output Low Voltage VIH VIL VOH VOL 0.7xVIO
-0.3 VIO-0.4
VIO+0.3 0.3xVIO
0.4 V V V V KAGA FEI Co., Ltd. 11/25 WK8887 Control No. KM-AE-A223020 (2/6) Control name Electrical characteristics Jan.18th.2023 KAGA FEI Co., Ltd. FCC ID : 2A6NFWK8887 AC Specifications Power-on timing / External sleep clock No. Parameter Condition Symbol Min Typ Max 1 Valid Power/ Clock to PDn de-asserted Tpor 300 2 3 4 5 6 7 Input SLP_CLK frequency Input SLP_CLK high voltage Input SLP_CLK low voltage Input SLP_CLK phase noise requirement Input SLP_CLK slew rate limit (10-90%) Input SLP_CLK duty cycle tolerance 8 PDN down to Power off V=1.8V Tf VIH VIL PN SR DC Toff
-0.4
20 0
32.768
0.7*V
V+0.4 0.3*V
-125
dBc/Hz @100KHz
100 80 ns
ms Remark Unit ms KHz V V
<Power-on sequence>
PDn must remain asserted for minimum of Tpor after VBAT/VDD33/VIO/VIO_RF/VIO_SD and SLP_CLK are stable. Power up sequence. Power down sequence. External power down(PDn) No. Parameter Condition Symbol Min Typ Max 1 300 1. PDn should be asserted while VBAT/VDD33/VIO/VIO_RF/VIO_SD are stable. PDn pulse width Tppw Remark Unit ms KAGA FEI Co., Ltd. 12/25 TporPDnVBATSLP_CLK(32.768KHz)TfVIO/VIO_RF/VIO_SDVDD33PDnVBATSLP_CLK(32.768KHz)VIO/VIO_RF/VIO_SDVDD33ToffTppwPDn WK8887 Control No. KM-AE-A223020 (3/6) Control name Electrical characteristics Jan.18th.2023 KAGA FEI Co., Ltd. FCC ID : 2A6NFWK8887 SDIO Interface Specifications The Specification applies for Topr.= 25 degrees C , Supply voltage=Typical voltage. No. Parameter Symbol Condition Min Typ Max Unit Remark 1 Input SDIO_CLK Frequency 2 Input SDIO_CLK High Time 3 Input SDIO_CLK Low Time Tf Tch Tcl 4 Input SDIO_CMD, DATA[3:0] Setup time Tsu 5 Input SDIO_CMD, DATA[3:0] Hold time Thd 6 Output SDIO_CMD, DATA[3:0] Delay time Tod Normal High Speed Normal High Speed Normal High Speed Normal High Speed Normal High Speed Normal High-Speed 0 0 10 7 10 7 5 6 5 2
7 Output SDIO_CMD, DATA[3:0] Hold time Toh High Speed 2.5
25 50 MHz
ns ns ns ns 14 ns 14
ns ns CL<40pF
(1card) Normal Mode High Speed Mode KAGA FEI Co., Ltd. 13/25 SD_CLKSD_CMDSD_DATA[3:0]HOST > WiFiWiFi > HOSTTfTchTclTsuThdTodSD_CMDSD_DATA[3:0]SD_CLKSD_CMDSD_DATA[3:0]HOST > WiFiWiFi > HOSTTfTchTsuThdTodSD_CMDSD_DATA[3:0]TohTcl WK8887 Control No. KM-AE-A223020 (4/6) Control name Electrical characteristics Jan.18th.2023 KAGA FEI Co., Ltd. FCC ID : 2A6NFWK8887 SDIO Interface Specifications The Specification applies for Topr.= 25 degrees C , Supply voltage=Typical voltage. No. Parameter Symbol Condition Min Typ Max Unit Remark SDR12/25/50 25 MHz 1 Clock Frequency 2 Input setup time 3 Input hold time 4 Clock time Rise time,fall time Tcr,Tcfs2ns(max)at100MHz Ccard=10pF Output delay time Cl30pF Output hold time Cl=15pF 5 6 7 fpp Tis Tih Tclk SDR104 SDR12/25/50 SDR104 SDR12/25/50 SDR104 SDR12/25/50 SDR104 SDR12/25/50 Tcr,Tcf SDR104 Todly SDR12/25/50 0 3 1.4 0.8 0.8 10 4.8
Toh SDR12/25/50 1.5
100 150
40
ns ns ns ns 0.2*Tclk 0.2*Tclk 7.5 ns
10
ns ns ns 8 Card output phase 9 Output timing of variable data window Top SDR104 Todw SDR104 0 2.88 SDIO Protocol Timing Diagram-SDR12,SDR25,SDR50 SDIO Protocol Timing Daigram-SDR104 KAGA FEI Co., Ltd. 14/25 TclkfppTcrTisTihTodlyTohClockOutputInputTcfTclkfppTcrTisTihTopTodwClockOutputInputTcf WK8887 Control No. KM-AE-A223020 (5/6) Control name Electrical characteristics Jan.18th.2023 KAGA FEI Co., Ltd. FCC ID : 2A6NFWK8887 PCM Interface The Specification applies for Topr.= 25 degrees C, Supply voltage=Typical voltage. No. Parameter Condition Symbol Min Typ Max Unit Remark 1 2 4 5 6 PCM_CLK Frequency Delay time from PCM_CLK High to valid PCM_OUT Setup time for PCM_IN valid to PCM_CLK Low Hold time for PCM_CLK Low to PCM_IN valid Delay time from PCM_CLK High to PCM_SYNC High Master Mode Tbclk Tdo
Tdisu 20 Tdiho 15 Tbf
2 / 2.048
MHz
15 ns
ns ns 15 ns KAGA FEI Co., Ltd. 15/25 TbclkTtdoTdisuTdihoTbfPCM_CLKPCM_DOUTPCM_DINPCM_SYNC WK8887 Control No. KM-AE-A223020 (6/6) Control name Electrical characteristics Jan.18th.2023 KAGA FEI Co., Ltd. FCC ID : 2A6NFWK8887 2.4GHz Band RF Specifications The Specification applies for Topr.= 25 degrees C, Supply voltage=Typical voltage No. Parameter Condition Symbol 1 TX Power 2 Rx sensitivity 11Mbps, 11b 54Mbps, 11g MCS7, 20MHz BW, 11n MCS7, 40MHz BW, 11n 11Mbps, 11b 54Mbps, 11g MCS7, 20MHz BW, 11n MCS7, 40MHz BW, 11n Po2-1 Po2-2 Po2-3 Min 10 10 10 Po2-4 8 SEN2-1 SEN2-2 SEN2-3 SEN2-4 Typ 12 12 12 10
-87
-73
-69 Unit Remark dBm Max 14 14 14 12
-76
-65
-64 dBm
-66
-61 5GHz Band RF Specifications The Specification applies for Topr.= 25 degrees C, Supply voltage=Typical voltage No. Parameter Condition 54Mbps, 11a Symbol Po5-1 1 TX Power 2 Rx sensitivity MCS7, 20MHz BW, 11n Po5-2 MCS7, 40MHz BW, 11n Po5-3 MCS9, 80MHz BW, 11ac Po5-4 54Mbps, OFDM SEN5-1 MCS7,20MHzBW,OFDM SEN5-2 MCS7,40MHzBW,OFDM SEN5-3 MCS9,80MHzBW,OFDM SEN5-4 Min 10 10 8 6 Typ Max Unit Remark 12 12 10 8
-71
-68
-65
-57 14 14 12 10
-65
-64
-61
-51 dBm dBm RF Specifications (Bluetooth) The Specification applies for Topr.= 25 degrees C, Supply voltage =Typical voltage. No. Parameter Condition 1 Tx Power 2 Sensitivity Basic Basic Sym Pob-2 SENB Min
-6 Typ 0
-86 Max 2
-70 Unit dBm dBm Remark Class2 KAGA FEI Co., Ltd. 16/25 WK8887 Control No. KM-MC-A223020 (1/1) Control name Circuit Schematic Block Diagram Jan.18th.2023 KAGA FEI Co., Ltd. FCC ID : 2A6NFWK8887 KAGA FEI Co., Ltd. 17/25 ANT1ANT288W8887SWBPFDiplexerCrystalVDD33VIO_SDSDIOPCMPDnSleep clock2.4GHzGHTxBTRxDual Band AntennaGNDVBATVIOVIO_RFVDD18 WK8887 Control No. KM-AD-A223020 (1/3) Control name Outline/Appearance Jan.18th.2023 KAGA FEI Co., Ltd. FCC ID : 2A6NFWK8887 OUTLINE Unit: mm, Tolerances unless otherwise specified: 0.2mm Dummy Pad Non-through hole Non-through hole
(TOP VIEW) KAGA FEI Co., Ltd. 18/25 WK8887 Control No. KM-AD-A223020 (2/3) Control name Outline/Appearance Jan.18th.2023 KAGA FEI Co., Ltd. FCC ID : 2A6NFWK8887 Module Pad Dimension Unit: mm,
(TOP VIEW) 46_Singnal Pad0.50 x 0.90 4_Corner Pad 0.80 x 0.90 6_Center Pad 2.80 KAGA FEI Co., Ltd. 19/25 WK8887 Control No. KM-AD-A223020 (3/3) Control name Outline/Appearance Jan.18th.2023 KAGA FEI Co., Ltd. FCC ID : 2A6NFWK8887 Recommended Land Pattern Dimension Pad sizes on the motherboard should be the same size as the module pad sizes. Recommended Metal Mask (Solder Mask) Conditions Mask size see below. Thickness of the Metal Mask should be in the range of 0.1 mm Unit: mm
(TOP VIEW) 46_Singnal Pad Metal Mask Opening0.50 x 0.90 4_Corner Pad Metal Mask Opening 0.80 x 0.90 6_Center Pad Metal Mask Opening 2.35 KAGA FEI Co., Ltd. 20/25 WK8887 Control No. KM-BA-A223020 (1/3) Control name Pin Layout Jan.18th.2023 KAGA FEI Co., Ltd. FCC ID : 2A6NFWK8887 Pin Descriptions Terminal No. Terminal Name I/O Pwr Domain Description Function GND VIO_RF GPIO3, CON[1]
GPIO2, CON[0]
UART_RTS UART_CTS UART_SIN UART_SOUT PDN GPIO13/BT_WAKEUP_ BT_HOST GND VDD18 VDD33 GND VBAT PCM_DIN/PCM_A Internal PU
Enable Enable Enable
I I I O I I O I VIO VIO VIO VIO VIO GND Ground VIO_RF 3.3V Analog I/O RF Power Supply VIO_RF Configuration Mode: CON[1], See Table-1 VIO_RF Configuration Mode: CON[0], See Table-1 PWR PWR CTRL CTRL UART_RTSN Please put out the test terminal. UART UART_CTSN Please put out the test terminal. UART Enable UART_SIN Please put out the test terminal. UART Enable UART_SOUT Please put out the test terminal. UART Enable Power Down (no internal pull-up on this pin)
(0: Full Power Down, 1: Normal Operation) CTRL None O VIO Bluetooth wakeup host (Output). CTRL
I I
I I GND Ground VDD18 1.8V buck voltage output VDD33 3.3V Analog Power Supply GND Ground VBAT 1.1v buck/1.8v buck/3.3v LDO VBAT input VIO PCM Data Input Signal PCM_CLK I/O VIO PCM_SYNC I/O VIO PCM Clock Signal.
(Output if PCM master. Input if PCM slave.) PCM Sync Pulse Signal.
(Output if PCM master. Input if PCM slave.) PCM_DOUT/PCM_B 1.1V_INT GND SD_D2 SD_D3 SD_CMD GND SD_CLK GND SD_D0 SD_D1 GND VIO_SD O O
VIO PCM Data Output Signal VDD11 1.1V buck voltage output GND Ground I/O VIO_SD SDIO Data line Bit[2]
I/O VIO_SD SDIO Data line Bit[3]
I/O VIO_SD SDIO Command/Response
I
GND Ground VIO_SD SDIO Clock Input GND Ground I/O VIO_SD SDIO Data line Bit[0]
I/O VIO_SD SDIO Data line Bit[1]
I GND Ground VIO_SD 1.8/3.3V Digital SDIO Power Supply. KAGA FEI Co., Ltd. PWR PWR PWR PWR PWR PCM
Enable PCM Enable SDIO Enable PCM PWR PWR SDIO SDIO SDIO PWR SDIO PWR SDIO SDIO PWR PWR Enable
Enable Enable Enable
Enable
Enable Enable
21/25 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 WK8887 Control No. KM-BA-A223020 (2/3) Control name Pin Layout Jan.18th.2023 KAGA FEI Co., Ltd. FCC ID : 2A6NFWK8887 Terminal No. Terminal Name I/O Pwr Domain Description Function VIO GND SLP_CLK I
I VIO 1.8/2.5/3.3V Digital Power Supply GND Ground VDD18 Sleep Clock Input PWR PWR CLOCK GPIO1/WL_HOST_WAKE O VIO WLAN wakeup HOST (Output) CTRL Internal PU
Enable Enable Enable Enable
I I I I
I/O I/O
VIO VIO VIO VIO Reserved. Do not connect this pin. Leave this pin floating. JTAG Controller Select JTAG Test Data Input JTAG Test Data Output JTAG Test Clock Input GND Ground
RF I/O, should be connected to Pin 43 Internal antenna, should be connected to Pin 42 GND GND Ground Ground
JTAG JTAG JTAG JTAG PWR RF I/O Antenna PWR PWR
Reserved. Do not connect this pin. Leave this pin floating. Reserved. Do not connect this pin. Leave this pin floating. Reserved. Do not connect this pin. Leave this pin floating. Reserved. Do not connect this pin. Leave this pin floating. GND Ground GND Ground GND Ground GND Ground GND Ground GND Ground GND Ground PWR PWR PWR PWR PWR PWR PWR KAGA FEI Co., Ltd. 22/25 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 RES TMS TDI TDO TCK GND ANT1 ANT2 GND GND RES 47 RES 48 RES 49 RES 50 51 52 53 54 55 56 GND GND GND GND GND GND GND WK8887 Control No. KM-BA-A223020 (3/3) Control name Pin Layout Jan.18th.2023 KAGA FEI Co., Ltd. FCC ID : 2A6NFWK8887 Table-1 HOST Interface / FW down load select BT/BLE CON[0]
CON[1]
WLAN 0 0 1 1 0 1 0 1 00,01 reserved SDIO SDIO UART SDIO Note) The 88W8887 firmware and driver does not support UART as a Bluetooth host interface. However, please add UART test points to your design because the UART terminal may be needed during Bluetooth qualification testing. KAGA FEI Co., Ltd. 23/25 WK8887 Control No.
(1/2) Control name Handling Precaution This specification describes the required conditions for mounting the device. Jan.18th.2023 KAGA FEI Co., Ltd. FCC ID : 2A6NFWK8887 Required Conditions
(1) Use and Storage 1. If components are in the moisture barrier bag packed by KAGA FEI, store the components at
< 40deg-C/90RH. 2. Keep the factory ambient conditions at < 30deg-C/60RH . 3. Store the components at < 255deg-C/10%RH after the bag is opened.
(This condition also applies during the manufacture process).
(2) Handling Make sure all moisture barrier bags have no holes, cracks or damages. If an abnormality is found on the bag, its moisture level must be checked in accordance with 2 in (2). 1. All of the surface mounting process (reflow process) must be completed within 12 months from the bag seal date. 2. Immediately after opening the bag, use the humidity indicator included in the bag to make sure the humidity in the bag is less than 10%RH. 3. All of the surface mounting process (reflow process including rework process) must be completed within 168 hours after the bag is opened (inclusive of any other processes). 4. If any conditions in (1) or condition 2 and 3 in (2) are not met, bake the components in accordance with the conditions at 125deg-C for 24hours 5. As a rule, baking the components in accordance with condition 4 in (2) shall only be done once. 6. These components are sensitive to static electricity discharge.(<100V) To prevent damage, use ESD protective floor mats, wrist straps, ESD protective footwear, air ionizers etc. 7. Minimize mechanical vibration and shock. KAGA FEI Co., Ltd. 24/25 WK8887 Control No.
(2/2) Control name Handling Precaution Jan.18th.2023 KAGA FEI Co., Ltd. FCC ID : 2A6NFWK8887 8. Please recognize the pad on the back side when mounting the module. 9. Washing the module is not recommended. If washing cannot be avoided, please test module functionality and performance after thoroughly drying the module. We cannot be held responsible for any failures due washing the module. 10. Please do not exceed the recommended reflow temperature profile below. These components can only be reflowed a maximum of 1 times. KAGA FEI Co., Ltd. 25/25 050100150200250300IN OUTTemp(deg)130-180deg Pre-heat : 60~120secPeak Temp:250deg Max230deg up : 40secMaxRecommented Reflow Profile