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Document DEVICE REPORTWILCS02 Wi Fi Link Controller SD Board User Guide -3512114

WILCS02 Wi-Fi® Link Controller SD Board
EV74A47A
Introduction
The WILCS02 Wi-Fi® Link Controller SD Board is a Secure Digital (SD) card interface board that supports the 2.4 GHz IEEE® 802.11 b/g/n standard. It is designed to demonstrate the features and functionalities of Microchip's low-power Wi-Fi WILCS02PE module. The WILCS02-SD Board offers: · WILCS02PE module with WLAN connectivity solution and hardware-based security accelerator · PCB antenna
Features
· WILCS02PE Module is a Low-Power, 2.4 GHz IEEE® 802.11 b/g/n RF/Baseband/MAC Link Controller Module · SD/MMCplus Card Connector for Controlling the WILCS02PE Module by a Host MPU Board Using the SDIO
Interface · On-Board USB-to-UART Converter Using Microchip MCP2221A for Debug UART · Manual Reset Button to Reset the WILCS02PE Module · Separate Current Measurement Headers for VDD and VDDIO Supply Rails · Power Supply from a Host MPU Board Through an SD/MMCplus Connector or Test the PC Using a USB
Type-C® Cable or External Power Supply · Hardware-Based 802.15.2 Compliant Three-Wire PTA Interface to Support Wi-Fi®/Bluetooth® Co-existence
Using Shared Antenna · Optional Alternate SPI Connection to MMCplus/SD Card Interface for Controlling the WILCS02PE Module

User Guide
© 2024 Microchip Technology Inc. and its subsidiaries

DS50003655C - 1

EV74A47A
Table of Contents
Introduction........................................................................................................................................................................... 1
Features ................................................................................................................................................................................ 1
1. Quick References ..........................................................................................................................................................3 1.1. Reference Documentation................................................................................................................................3 1.2. Prerequisites.......................................................................................................................................................3 1.3. Acronyms and Abbreviations........................................................................................................................... 3
2. Kit Overview................................................................................................................................................................... 4 2.1. Kit Contents ....................................................................................................................................................... 5
3. Hardware........................................................................................................................................................................6 3.1. Power Supply......................................................................................................................................................6 3.2. Firmware Update............................................................................................................................................... 8 3.3. Header and Connectors.................................................................................................................................... 8 3.4. DEBUG Connector (J200)................................................................................................................................... 9 3.5. PTA Interface Header (J101).............................................................................................................................. 9 3.6. Strapping Pin Header........................................................................................................................................ 9 3.7. RESET Switch.....................................................................................................................................................10 3.8. LEDs................................................................................................................................................................... 10 3.9. WILCS02PE Module..........................................................................................................................................10
4. Using SPI Interface...................................................................................................................................................... 11 4.1. Using SPI Interface via SD/MMCplus Connector.......................................................................................... 11 4.2. Using SPI Interface via Jumper Wires............................................................................................................ 12
5. Appendix A: Reference Circuit................................................................................................................................... 14 5.1. WILCS02-SD Board Schematics...................................................................................................................... 14 5.2. WILCS02 Wi-Fi® Link Controller SD Board Bill of Materials......................................................................... 18
6. Appendix B: Regulatory Approval............................................................................................................................. 19 6.1. United States.................................................................................................................................................... 19 6.2. Canada.............................................................................................................................................................. 20 6.3. Europe............................................................................................................................................................... 20
7. Document Revision History....................................................................................................................................... 21
Microchip Information....................................................................................................................................................... 22 The Microchip Website............................................................................................................................................... 22 Product Change Notification Service........................................................................................................................ 22 Customer Support.......................................................................................................................................................22 Microchip Devices Code Protection Feature............................................................................................................22 Legal Notice..................................................................................................................................................................22 Trademarks.................................................................................................................................................................. 23 Quality Management System.....................................................................................................................................24 Worldwide Sales and Service..................................................................................................................................... 25

User Guide
© 2024 Microchip Technology Inc. and its subsidiaries

DS50003655C - 2

EV74A47A Quick References

1. Quick References
1.1 Reference Documentation
For further details, refer to the following:
· WILCS02IC and WILCS02 Family Data Sheet (DS70005557) · MCP17271.5A, Low Voltage, Low Quiescent Current LDO Regulator Data Sheet (DS21999) · MCP2221A USB 2.0 to I2C/UART protocol converter with GPIO contains Driver package for DBG
UART-USB converter (DS20005565)
1.2 Prerequisites
· WILCS02 Wi-Fi® Link Controller SD Board (EV74A47A) · USB Type-C®-compliant cable
· Host MPU board with SD/MMCplus socket support
1.3 Acronyms and Abbreviations

Table 1-1. Acronyms and Abbreviations

Acronyms and Abbreviations

Description

BOM

Bill of Materials

DBG

Debug

GPIO

General Purpose Input/Output

Hardware

LDO

Low-Dropout

LED

Light Emitting Diode

MPU

Microprocessor Unit

Not Connected

OSC

Oscillator

PCB

Printed Circuit Board

PPS

Peripheral Pin Select

PTA

Packet Traffic Arbitration

Receiver

SCL

Serial Clock

Secure Digital

SDA

Serial Data

SDIO

Serial Data input/Output

SMD

Surface Mount Device

SoC

System-on-Chip

SPI

Serial Peripheral Interface

Transmitter

UART

Universal Asynchronous Receiver-Transmitter

USB

Universal Serial Bus

User Guide
© 2024 Microchip Technology Inc. and its subsidiaries

DS50003655C - 3

EV74A47A Kit Overview
2. Kit Overview
The WILCS02-SD board is a plug-in board containing the low-power WILCS02PE module. This board can be plugged in to any host Microprocessor (MPU) board with SD/MMCplus card connector support. This is targeted for an MPU host running a Linux OS and can be interfaced through the SDIO interface. The WILCS02-SD board has an on-board PTA interface header for the co-existence of the external Bluetooth® device.
Figure 2-1. WILCS02-SD Board (EV74A47A) Top View

Strapping1 Header (J103)
Strapping2 Header (J104)
Reset Switch (SW100) Resistor (R126)
VDDIO Supply Selection Header (J204) VDDIO Current Measurement Header (J206)
External VDDIO Supply Header (J202) VDD Supply Selection Header (J203)
VDD Current Measurement Header (J205) External VDD Supply Header (J201)

WILCS02PE Module (U101)
Reset Header (J207) PTA Header (J101) Resistor (R122)
MCP2221A (U100) USB Type-C® Connector (J200) MCP1727 (U201) Power Indicator for VDD Supply (D200) Power Indicator for VDDIO Supply (D201)

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© 2024 Microchip Technology Inc. and its subsidiaries

DS50003655C - 4

Figure 2-2. WILCS02-SD Board (EV74A47A) Bottom View

EV74A47A Kit Overview

SD/MMCplus Connector (J100)
2.1 Kit Contents
The EV74A47A (WILCS02 Wi-Fi Link Controller SD Board) kit contains the WILCS02 Wi-Fi Link Controller SD Board mounted with the WILCS02PE module. Note:If any of the above items are missing in the kit, go to support.microchip.com or contact your local Microchip Sales office. In this user guide, there is a list of Microchip offices for sales and services provided on the last page.

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© 2024 Microchip Technology Inc. and its subsidiaries

DS50003655C - 5

3. Hardware
This section describes the hardware features of the WILCS02-SD board.
Figure 3-1. WILCS02-SD Board Block Diagram

3.3V from Host SD/MMCplus Connector
3.3V
Load Switch (MIC94083YFT-TR)
3.3V
Automatic 3.3V Power Selection
MUX
3.3V
3.3V Linear Regulator (MCP1727)
5V
USB Type-C® Connector
USB-to-UART Converter (MCP2221A)

External VDD Supply Header (3V-3.6V)
VDD Power Selection Header
VDDIO Power Selection Header
External VDDIO Supply Header (3-3.6V)

VDD Current Measurement
Header
VDDIO Current Measurement
Header
Power LEDs

VDD
VDDIO PTA
WILCS02PE Module

Strap1 Header Strap2 Header

Strap1 Strap2
UART2_TX

MCLR
IRQ Reserved(2)
SDIO

EV74A47A Hardware
PTA Header
RESET Button SD/MMCplus Connector

Notes:
1. Using Microchip's total system solution, which includes complementary devices, software drivers and reference designs, is highly recommended to ensure the proven performance of the WILCS02-SD boards. For more details, go to support.microchip.com or contact your local Microchip Sales office.
2. It is recommended to connect this pin with the Tri-State pin on the host board.

Table 3-1. Microchip Components Used in WILCS02-SD Board

Designator U100 U101

Description MCHP INTERFACE USB I2C UART MCP2221A-I/ST TSSOP-14 MCHP RF WI-FI® 802.11 b/g/n WILCS02PE-I

U201

MCHP ANALOG LDO 0.8V-5V MCP1727T-ADJE/MF DFN-8

U202

MCHP ANALOG POWER SWITCH 1.7V to 5.5V 2A MIC94083YFT 4-TMLF

Manufacturer Part Number MCP2221A-I/ST WILCS02PE-I MCP1727T-ADJE/MF MIC94083YFT-TR

3.1 Power Supply
The WILCS02-SD board can be powered using any of the following sources depending on the use case scenario, but the default supply is from the host board using the SD/MMCplus Connector or from a PC using a USB Type-C® cable:
1. Host board SD 3.3V supply:

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© 2024 Microchip Technology Inc. and its subsidiaries

DS50003655C - 6

EV74A47A Hardware
Place the jumper between J203-1 and J203-2 for the 3.3V VDD supply and between J204-1 and J204-2 for the 3.3V VDDIO supply to power the module using the host board via the SDIO interface.
Figure 3-2. Power Supply Block Diagram

Type-CTM USB Supply
(J200)
Host Board 3.3V Supply

3.3V Linear

VDD Current

Regulator 3.3V (MCP1727)
3.3V

Auto Power Multiplexer (To Select Power from USB or Host)

3.3V

J204 and J203 Power Selection Header USB/Host

VDD 3.3V

or External

VDDIO

3.3V

Measurement Header (J205) VDD
VDDIO Current VDDIO Measurement

WILCS02PE Module

Header (J206)

External 3.3V Power Supply

3.3V

3.1.1 3.1.2

2. USB Type-C supply (J200):
The debug USB (J200) supplies power to the WILCS02-SD board from the host PC using Type-A male to Type-C USB cable.
Place the jumper between J203-1 and J203-2 for the 3.3V VDD supply and between J204-1 and J204-2 for the 3.3V VDDIO supply to power the WILCS02PE module.

Note:The maximum available current from the debug USB (J200) is limited to 500 mA.
3. External 3.3V Power supply:
Place the jumper between J203-2 and J203-3 for the 3.3V VDD supply and between J204-2 and J204-3 for the 3.3V VDDIO supply to power the WILCS02PE module using an external power source.

Note:The operating voltage range for VDD and VDDIO is: 3.0-3.6V (3.3V Typical).

Table 3-2. Power Selection
Power Supply Signals VDD VDDIO

3.3V Generated from Host Board Power Supply
JP200 on J203-1 and J203-2
JP201 on J204-1 and J204-2

3.3V Generated from USB Type-C® Supply JP200 on J203-1 and J203-2 JP201 on J204-1 and J204-2

3.3V Generated from External Power Supply
JP200 on J203-2 and J203-3
JP201 on J204-2 and J204-3

Note:When the WILCS02-SD board is plugged into the host board SD/MMCplus Connector and the USB Type-C cable is plugged into J200, the 3.3V supply is derived from the 5V USB supply.
Voltage Regulators (U201)
An on-board voltage regulator (MCP1727) generates +3.3V. This is used only when the USB supplies 5V to the WILCS02-SD board.
· U201 Generates +3.3V that powers the WILCS02PE module along with the associated circuits.
For more details on the MCP1727 voltage regulators, refer to the MCP17271.5A, Low Voltage, Low Quiescent Current LDO Regulator Data Sheet (DS21999).
Current Measurement Header (J205 and J206)
Use the current measurement header (J205 and J206) to measure the current consumed by the WILCS02PE module using an ammeter. · Remove resistor (R208), then connect an ammeter between pins 1 and 2 of J205 to measure the
VDD current.
· Remove resistor (R209), then connect an ammeter between pins 2 and 3 of J206 to measure the VDDIO current.

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© 2024 Microchip Technology Inc. and its subsidiaries

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3.2 3.3
3.3.1
3.3.2

Firmware Update

EV74A47A Hardware

The WILCS02PE module comes with pre-programmed firmware. Microchip periodically releases firmware to fix reported issues or to implement the latest feature support.

Notes:
1. Remove the jumpers from header J103 and J104 while performing Device Firmware Update (DFU) over UART.

2. For serial DFU and firmware side-loader programming guidance, refer to the WILCS02 Wi-Fi Link Controller Application Developer's Guide.

Header and Connectors

Standard SD/MMCplus Connector Pin Specification
The following table provides the pin descriptions for the standard MMCplus connector in the SDIO Bus mode.

Table 3-3. Standard SD/MMCplus Connector Pin Details

SD Pin

MMCplus Pin

SDIO Bus Mode

DATA 3

CMD

VSS

VDD

SD CLK

VSS

DATA 0

DATA 1

DATA 2

DATA 4

DATA 5

DATA 6

DATA 7

WILCS02-SD Board SD/MMCplus Connector
The WILCS02-SD board has a PCB-implemented SD card interface (J100) via the SD/MMCplus connector. This board supports only the SDIO interface; it does not support the MMCplus interface. The unused DATA 5, DATA 6 and DATA 7 pins of the MMCplus connector are connected to MCLR, IRQ/INTOUT and reserved signal lines.
The following table provides the customized SD/MMCplus connector pin description for the WILCS02PE module.

Table 3-4. SD/MMCplus Connector Pin Description

Pin on SD/MMCplus Connector

Pin on WILCS02PE Module Function

Description

SD DATA 3

SDIO DATA 3

SD CMD

SDIO command

12,29,9,28

GND

Ground

20,23

HOST_SD_P3V3 3.3V power supply from SD/MMCplus Host

board

SD CLK

SDIO clock

12,29,9,28

GND

Ground

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DS50003655C - 8

EV74A47A Hardware

...........continued
Pin on SD/MMCplus Connector

Pin on WILCS02PE Module Function

Description

SD DATA 0

SDIO Data 0

SD DATA 1

SDIO Data 1

SD DATA 2

SDIO Data 2

RESET

Data 5 line is used to reset the WILCS02PE

module

IRQ/INTOUT Data 6 line is used to send Interrupt output

from the WILCS02PE module

13(1)

Reserved

Note:

1. It is recommended to connect this pin with the Tri-State pin on the host board.

3.4 DEBUG Connector (J200)
The WILCS02PE module provides UART2_TX from pin 27, which can be used for printing debug logs. This pin is connected to MCP2221A, on-board USB-to-UART converter. The end user can use the USB Type-C® connector, J200, to connect to the host PC and view the debug logs from the WILCS02PE module in the Serial Terminal. The following are the serial terminal settings: · Baud rate: 460800
· Data: 8 bits
· No Parity
· Stop: 1 bit
· No flow control

3.5 PTA Interface Header (J101)
The PTA interface supports a shared antenna between Bluetooth® and Wi-Fi®. It has the hardwarebased 802.15.2 compliant 3-wire PTA interface (J101) to address Wi-Fi/Bluetooth co-existence.

Table 3-5. PTA Pin Configuration

Header Pin

Pin on WILCS02PE Module

Pin1

Pin21, PTA_BT_ACTIVE

Pin2

Pin6, PTA_BT_PRIORITY

Pin3

Pin5, PTA_WLAN_ACTIVE

Pin4

GND

Pin Type Input Input Output Power

Description Bluetooth® active Bluetooth priority WLAN active Ground

Note:Refer to the software release notes for additional information.

Table 3-6. PTA Resistor Configuration for SDIO

Host Interface

Modification Required in Resistors

SDIO (Default)

Mounted resistor: R127, R128 and R129 Not mounted resistor: R130, R131 and R132

3.6 Strapping Pin Header
The J103 is the strap 1 header; by default, this is pulled low (with the help of jumper position in between pin 2 and pin 3). This configuration enables the SDIO host interface selection.
For the SPI host interface selection, the jumper position must be in between pin 1 and pin 2 of J103 header.

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DS50003655C - 9

EV74A47A Hardware

The following table describes the host interface selection based on the jumper selection of the J103 header.

Table 3-7. Host Interface Selection
Host Interface Selection SDIO (Default) SPI

J103 (Strap 1) Header 0 1

Note:The J104 strap 2 pin header is reserved and, by default, pulled high with the jumper position in between pin 1 and pin 2 on the J104 header.
3.7 RESET Switch
The following switch is available on the WILCS02-SD Board :
· Reset switch (SW100) Connected with the MCLR signal of the WILCS02PE module
In Idle state, the level of the user-configurable switch is pulled high (+3.3V) and, when the switch is pressed, it drives the MCLR line of the WILCS02PE module to low (GND).

Switch Name SW100

Description Reset switch

Pin on WILCS02PE Module MCLR

3.8 LEDs
The following are the WILCS02-SD on-board LEDs.
· Power LEDs Red (D200): Power indicator for VDD supply
Red (D201): Power indicator for VDDIO supply
3.9 WILCS02PE Module
For more details on the WILCS02PE module pinout details, refer to the WILCS02IC and WILCS02 Family Data Sheet (DS70005557).

User Guide
© 2024 Microchip Technology Inc. and its subsidiaries

DS50003655C - 10

EV74A47A Using SPI Interface

4. Using SPI Interface
This section describes how to use the SPI interface via the SD/MMCplus connector and wire jumpers of the WILCS02-SD board. The user can follow either Using SPI Interface via SD/MMCplus Connector or Using SPI Interface via Jumper Wires based on their use case scenario.
4.1 Using SPI Interface via SD/MMCplus Connector
The following hardware rework must be done in the WILCS02-SD board to use the SPI interface through the same SD/MMCplus connector. · Remove resistors R103, R105, R108, R111 and R113 from the WILCS02-SD board
· Populate R104, R106, R109 resistors

Table 4-1. SPI Connections in WILCS02-SD Board SD/MMCplus Connector

Pin on SD/MMC Connector

SDIO Bus Mode

DATA 3

CMD

VSS

VDD

SD CLK

VSS

DATA 0

DATA 1

DATA 2

MCLR

Device IRQ/INTOUT

Reserved

SPI Connection SPI_CS SPI_RXD Ground 3.3 V Power supply SPI_CLK Ground SPI_TXD -- -- -- MCLR Device IRQ/INTOUT --

Table 4-2. WILCS02-SD Board Resistor Configuration for SDIO/SPI

Peripheral Interface SDIO (Default)

Modification Required in Resistors
Mounted resistors: R103, R105, R107, R108, R110, R111, R113, R114, R116 and R117 Not mounted resistors: R104, R106, R109, R112 and R115

Mounted resistors: R104, R106, R107, R109, R110, R107 and

R116

SPI

Not mounted resistors: R103, R105, R108, R111, R112, R113,

R117 and R115

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© 2024 Microchip Technology Inc. and its subsidiaries

DS50003655C - 11

Figure 4-1. Position of Required Resistors
in resistors

EV74A47A Using SPI Interface

4.2 Using SPI Interface via Jumper Wires
The following hardware (wire jumpers of equal length) rework must be done in the WILCS02-SD board to use the SPI interface rather than the SDIO interface.
Note:The rework below is suggested when the WILCS02-SD board is with default SDIO configuration.
1. Remove resistor R111 and solder the fly wire from the pad of R111 (Highlighted in the below image) to the SPI_CS of the host board.
2. Remove resistor R110 and solder the fly wire from the pad of R110 (Highlighted in the below image) to the SPI_RXD of the host board.
3. Remove resistor R105 and solder the fly wire from the pad of R105 (Highlighted in the below image) to the SPI CLK of the host board.
4. Remove resistor R113 and solder the fly wire from the pad of R113 (Highlighted in the below image) to the SPI_TXD of the host board. Note:It is recommended to use a short length of the fly wire for the SPI signal line connection.
5. Solder a jumper wire from TP107 or the pad of R116 (see the following figure) to connect it with the interrupt pin of the host board.
6. Use jumper wires to connect MCLR from J207 to the corresponding pin of the host board.
7. Solder the fly wire from R107 to the host board 3.3V supply pin to power on the WILCS02-SD board from the host board. Note:The user can power on the WILCS02-SD board using a USB Type C® cable as well.
8. Connect a jumper wire from J103 (Pin3) or J104 (Pin3) or solder the jumper wire at TP201 to the Ground of the host board.

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DS50003655C - 12

Figure 4-2. Accessing SPI Interface Using Jumper Wires
in resistors

EV74A47A Using SPI Interface

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DS50003655C - 13

EV74A47A Appendix A: Reference Circuit

5.
5.1

Appendix A: Reference Circuit
WILCS02-SD Board Schematics

Figure 5-1. SD/MMCplus Connector

R116 0R
DEVICE_IRQ

J100

8 9 10 11 12 13

DAT1 DAT2 DAT4 DAT5 DAT6 DAT7

DAT0 VSS CLK VDD VSS CMD
DAT3

7 6 5 4 3 2 1

DNP R115 R114 R113
DNPR112 R111 R110
DNP R109 R108 R107
DNP R106 R105
DNPR104 R103 R117

0RPB3_TDO 0RRESET_N 0RPA4_SDIO_DATA2/SPI_RXD

0R PA6_IRQ

0RPA3_SDIO_DATA1/SPI_SSN

0RPA2_SDIO_DATA0/SPI_TXD_PTA_WLAN_ACTIVE

0RPA0_SDIO_CMD/SPI_CLK_PTA_BT_ACTIVE

C116

0RPA1_SDIO_CLK/UART1_RX_PTA_BT_PRIORITY

DNP

HOST_SD_P3V3

0.1uF 10V

0RPA4_SDIO_DATA2/SPI_RXD 0RPA0_SDIO_CMD/SPI_CLK_PTA_BT_ACTIVE 0RPA3_SDIO_DATA1/SPI_SSN 0RPA5_SDIO_DATA3/UART1_TX

GND GND

RESERVED

Figure 5-2. Auto Power Distribution Switch for USB and SDIO

VCC_LSW_P3V3

PMDPB55XP,115 Q202A

PMDPB55XP,115 Q202B

38 5
4

R203 1M

VDD_VDDIO_P3V3

GND
VUSB_P3V3
R204 100k

PMDPB55XP,115 Q203A

38 5
4

PMDPB55XP,115 Q203B

GND

R205 100k

GND

DS50003655C - 14

Figure 5-3. 3.3V Regulator

EV74A47A Appendix A: Reference Circuit

VDD_USB_P5V0

TP201

R200
10k 0402 5%

C201
4.7uF 10V 0805

GND

TP202

Place TP202 and TP201 close GND

CDELAY C = (140na/.42v) * t or t = (C*0.42)/140na = 3ms

U201

1 2
3
5

VIN

VOUT

VIN

ADJ

SHDN CDELAY

PWRGD GND

8
7 6 9 4

MCP1727/0.8V-5V

GND

R210
200k 0402 1%

C202 0.1uF
16V 0402

R211
147k 0603 1%

VUSB_P3V3

C203 2.2uF

C208
0.1uF 16V 0402

TP203

R212 20k 0603 1%
GND

GND

Figure 5-4. USB to UART Converter

DS50003655C - 15

Figure 5-5. RESET Button

VDD

R118 0R SW100 5
GND Figure 5-6. Supply and Debug USB Connector

R119
10k 0402 5%
TP101
RESET_N
C103 0.1uF 10V 0402
GND

EV74A47A Appendix A: Reference Circuit

DS50003655C - 16

GND Figure 5-7. Current Measurement Header

EV74A47A Appendix A: Reference Circuit

VDD - Current Measurement Header VVDDDDIIOO -- CCuurrrreenntt MMeeaassuurreemmeennttHHeeaaddeerr

VDDIO SUPPLY SELECTION HEADER

JP201

VDDIO_MODULE

3 2 1
12

J204

VDD_VDDIO_P3V3

VDDIO

R209
1R

JP203 J206

0805

By default, the Jumper is placed between J204-1 and J204-2 for 3.3V supply from UPlSaBce/SJDumFigpuerer b5-e8t.wPTeAeInntJer2fa0c4e-H2eaadnedr J204-3 for External VDDIO supply from J202

R207
330R

D201
RED

GND

DS50003655C - 17

Figure 5-9. WILCS02PE Module

EV74A47A Appendix A: Reference Circuit

5.2 WILCS02 Wi-Fi® Link Controller SD Board Bill of Materials
For the Bill of Materials (BOM) of the WILCS02 Wi-Fi Link Controller SD Board, go to EV74A47A product web page.

DS50003655C - 18

EV74A47A Appendix B: Regulatory Approval
6. Appendix B: Regulatory Approval
This equipment (WILCS02 Wi-Fi® Link Controller SD Board/EV74A47A) is an evaluation kit and not a finished product. It is intended for laboratory evaluation purposes only. It is not directly marketed or sold to the general public through retail; it is only sold through authorized distributors or through Microchip. Using this requires a significant engineering expertise towards understanding of the tools and relevant technology, which can be expected only from a person who is professionally trained in the technology.
Regulatory compliance settings have to follow the WILCS02PE module certifications. The following regulatory notices are to cover the requirements under the regulatory approval.
6.1 United States
The WILCS02 Wi-Fi® Link Controller SD Board (EV74A47A) contains the WILCS02PE module, which has received Federal Communications Commission (FCC) CFR47 Telecommunications, Part 15 Subpart C "Intentional Radiators" single-modular approval in accordance with Part 15.212 Modular Transmitter approval.
Contains FCC ID: 2ADHKWIXCS02 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.
Important:FCC Radiation Exposure Statement This equipment complies with FCC radiation exposure limits set forth for uncontrolled environment. The antenna(s) used for this transmitter must be installed to provide a separation distance of at least 8 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter. This transmitter is restricted for use with the specific antenna(s) tested in this application for certification.

Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment.
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.

DS50003655C - 19

6.2

EV74A47A Appendix B: Regulatory Approval
Canada
The WILCS02 Wi-Fi® Link Controller SD Board (EV74A47A) contains the WILCS02PE module, which has been certified for use in Canada under Innovation, Science and Economic Development Canada (ISED, formerly Industry Canada) Radio Standards Procedure (RSP) RSP-100, Radio Standards Specification (RSS) RSS-Gen and RSS-247.
Contains IC: 20266-WIXCS02
This device contains license-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canada's license-exempt RSS(s). Operation is subject to the following two conditions: 1. This device may not cause interference;
2. This device must accept any interference, including interference that may cause undesired operation of the device.
L'émetteur/récepteur exempt de licence contenu dans le présent appareil est conforme aux CNR d'Innovation, Sciences et Développement économique Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes: 1. L'appareil ne doit pas produire de brouillage;
2. L'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.

This equipment complies with radio frequency exposure limits set forth by Innovation, Science and Economic Development Canada for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20 cm between the device and the user or bystanders.
Cet équipement est conforme aux limites d'exposition aux radiofréquences définies par d'Innovation, Sciences et Développement économique Canada pour un environnement non contrôlé. Cet équipement doit être installé et utilisé avec un minimum de 20 cm de distance entre le dispositif et l'utilisateur ou des tiers.
6.3 Europe
This equipment (EV74A47A) has been assessed under the Radio Equipment Directive (RED) for use in European Union countries. The product does not exceed the specified power ratings, antenna specifications and/or installation requirements as specified in the user manual. A Declaration of Conformity is issued for each of these standards and kept on file as described in Radio Equipment Directive (RED).
Simplified EU Declaration of Conformity
Hereby, Microchip Technology Inc. declares that the radio equipment type [EV74A47A] is in compliance with Directive 2014/53/EU.
The full text of the EU declaration of conformity is available at EV74A47A (See Conformity Documents).

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EV74A47A Document Revision History

7. Document Revision History
The revision history describes the changes that were implemented in the document. The changes are listed by revision, starting with the most current publication.

Revision C

Date

Section

09/2024 Hardware

WILCS02-SD Board SD/MMCplus Connector
Using SPI Interface via SD/MMCplus Connector

Description
· Updated "WAKE" to "Reserved" in the block diagram
· Added note for Reserved
· Replaced "Wake" by "reserved signal lines" · For Pin 13, replaced "WAKE" by "Reserved" and
added note
· For Pin 13, replaced "Device Wake" by "Reserved" · Moved "R117" into "Not mounted resistors"

Using SPI Interface via Jumper Wires WILCS02-SD Board Schematics

Removed the note for "R117"
· Updated the SD/MMCplus Connector schematic diagram
· Updated the WILCS02PE Module schematic diagram

07/2024 Features

Acronyms and Abbreviations

Reference Documentation

Prerequisites

Hardware

Updated
Removed "JTAG"
Added web link for the WILCS02IC and WILCS02 Family Data Sheet Updated "WILCS02 Wi-Fi® Link Controller SD Board (EV74A47A)"
· Updated the description and manufacturer part number for U101
· Updated "WILCS02-SD Board Block Diagram"

Power Supply Standard SD/MMCplus Connector Pin Specification DEBUG Connector (J200) PTA Interface Header (J101) Kit Overview
Strapping Pin Header
Using SPI Interface via Jumper Wires WILCS02-SD Board Schematics

Reshuffled the order Updated the "Connector Pin Details"
Updated the terminal settings Updated the description and note Updated WILCS02-SD board top view and bottom view image Added a new section to describe the jumper setting for the SDIO and SPI mode selection Updated the description Updated the following schematics: · USB-to-UART Converter · Supply and Debug USB Connector · PTA Interface Header · WILCS02PE module

WILCS02 Wi-Fi Link Controller SD Board Bill of Materials

Added a new section along with the official web page link

Appendix B: Regulatory Approval

Added a new section with regulatory approval details

03/2024 Document

Initial revision

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EV74A47A
Microchip Information
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DS50003655C - 22

EV74A47A
that your application meets with your specifications. Contact your local Microchip sales office for additional support or, obtain additional support at www.microchip.com/en-us/support/design-help/ client-support-services.
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GestIC is a registered trademark of Microchip Technology Germany II GmbH & Co. KG, a subsidiary of Microchip Technology Inc., in other countries.

DS50003655C - 23

All other trademarks mentioned herein are property of their respective companies. © 2024, Microchip Technology Incorporated and its subsidiaries. All Rights Reserved.
ISBN: 978-1-6683-0137-1
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EV74A47A

DS50003655C - 24

Worldwide Sales and Service

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