Infineon CYW989820M2EVB-01 User manual

User Guide Please read the Important Notice and Warnings at the end of this document 002-36760 Rev. **
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CYW989820M2EVB-01 evaluation kit user guide
About this document
Scope and purpose
CYW989820M2EVB-01 is an evaluation kit for the AIROC™CYW89820 Bluetooth® & Bluetooth® LE SoC, designed
to support several medical, security, and industrial applications. The system features an Arm® Cortex® - M4 core
with programmable and reconfigurable analog and digital blocks.
It is a combination of a microcontroller with the following:
Auxiliary ADC with up to 14 analog channels
General-purpose timers and PWM
Bluetooth® stack, peripheral drivers, security functions built into ROM (1 MB) allowing the application to
efficiently use on-chip flash
Programmable TX power-up to 11.5 dBm
Serial communication interfaces such as I2C, UART, PCM, and Quad-SPI
Over-the-air (OTA) firmware updates
Intended audience
This document is intended for anyone using the CYW989820M2EVB-01evaluation board.
Document conventions
Table 1 Conventions
Convention Explanation
Bold
Emphasizes heading levels, column headings, table and figure captions, screen
names, windows, dialog boxes, menus and sub
-menus
Italics
Denotes variable(s) and reference(s)
Courier New
Denotes APIs, functions, interrupt handl
ers, events, data types, error handlers,
file/folder names, directories, command line inputs, code snippets
>
Indicates that a cascading sub
-menu opens when you select a menu item

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About this document
Abbreviations and definitions
Table 2 Abbreviations
Abbreviation
Definition
API
Application Programming Interface
BR
Basic Rate
EEPROM
Electrically Erasable Programmable Read-Only Memory
EM
Electro-magnetic
EVB
Evaluation Board
GPIO
General Purpose Input Output
HCI
Host Controller Interface
I2C
Inter-Integrated Circuit
IDE
Integrated Development Environment
JTAG
Joint Test Action Group
LE
Low Energy
LED
Light Emitting Diode
LHL
Lean High Land
LPO
Low Power Oscillator
MEMS
Micro Electro-Mechanical System
NTC
Negative Temperature Coefficient
PCB
Printed Circuit Board
PUART
Peripheral UART
RF
Radio Frequency
SDK
Software Development Kit
SIG
Special Interest Group
SoC
System-On-Chip
SPI
Serial Peripheral Interface
SWD
Serial Wire Debug
UART
Universal Asynchronous Receiver/Transmitter
USB
Universal Serial Bus
WICED
Wireless Internet Connectivity for Embedded Devices
XTAL
Crystal Oscillator

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About this document
Reference documents
This user manual should be read in conjunction with the following documents available at CYW89820 Product
page:
Table 3 Reference documents
Application notes
AN225684
– Getting started with CYW208XX Describes CYW208XX Bluetooth® SoC and how to build
your first Bluetooth® LE application using the device
with ModusToolbox™. The same application note is
applicable for CYW89820.
Code examples
Visit the Infineon GitHub repository for a comprehensive collection of code examples using ModusToolbox™.
Device documentation
CYW89820 device datasheet Feature and peripheral guide
Tool documentation
ModusToolbox™The Infineon IDE for IoT designers

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Table of contents
Table of contents
About this document....................................................................................................................... 1
Table of contents............................................................................................................................ 4
Safety information ......................................................................................................................... 5
1 Introduction .......................................................................................................................... 6
1.1 CYW989820M2EVB-01 kit contents .........................................................................................................6
1.2 CYW989820M2EVB-01 evaluation board details.....................................................................................7
1.3 ModusToolbox™......................................................................................................................................8
1.3.1 ModusToolbox™code examples .......................................................................................................9
1.3.2 Related code examples....................................................................................................................10
1.3.3 ModusToolbox™help.......................................................................................................................10
1.4 Getting started.......................................................................................................................................10
1.5 IoT resources and technical support....................................................................................................10
2 Kit operation ........................................................................................................................11
2.1 Theory of operation...............................................................................................................................11
2.2 Jumpers.................................................................................................................................................15
2.3 Buttons and switches............................................................................................................................17
2.4 Arduino-compatible headers................................................................................................................18
2.5 Other headers........................................................................................................................................19
2.6 USB serial interface chip .......................................................................................................................20
2.7 Kit power supply....................................................................................................................................20
2.8 Test points ............................................................................................................................................. 20
2.9 Current measurement...........................................................................................................................21
2.10 SWD debugging .....................................................................................................................................21
2.11 Pin configuration...................................................................................................................................21
3 Hardware .............................................................................................................................22
3.1 Carrier module.......................................................................................................................................22
3.1.1 CYW89820 .........................................................................................................................................22
3.1.2 Antenna ............................................................................................................................................22
3.1.3 Crystal............................................................................................................................................... 22
3.2 Baseboard..............................................................................................................................................22
3.3 Serial communication between CYW89820 and PSoC™5 KitProg3 ....................................................23
3.4 Power.....................................................................................................................................................23
3.5 Device reset ...........................................................................................................................................26
3.6 Thermistor ............................................................................................................................................. 27
3.7 External serial flash ...............................................................................................................................28
3.8 Ambient light sensor ............................................................................................................................. 28
3.9 LEDs .......................................................................................................................................................29
3.10 Push buttons .........................................................................................................................................29
4 CYW89820 device I/O mapping ................................................................................................30
Revision history.............................................................................................................................33

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Safety information
Safety information
The CYW989820M2EVB-01 evaluation kit is intended for use as a development platform for hardware or
software in a laboratory environment. The board is an open-system design, which does not include a shielded
enclosure. Due to this reason, the board may cause interference to other electrical or electronic devices in close
proximity. In a domestic environment, this product may cause radio interference. In such cases, take adequate
preventive measures. Also, do not use this board near any medical equipment or RF devices.
Attaching additional wiring to this product or modifying the product operation from the factory default may
affect its performance and cause interference with other apparatus in the immediate vicinity. If such
interference is detected, suitable mitigating measures must be taken.
CYW989820M2EVB-01 evaluation board contains electrostatic discharge (ESD)-sensitive
devices. Electrostatic charges readily accumulate on the human body and any equipment
and can discharge without detection. Permanent damage may occur on devices subjected
to high-energy discharges. Proper ESD precautions are recommended to avoid
performance degradation or loss of functionality. Store unused CYW989820M2EVB-01 in
the protective shipping package.
End-of-Life/Product Recycling
This kit has an end-of-life cycle of five years from the year of manufacturing mentioned on
the back of the box. Contact your nearest recycler for discarding the kit.
General safety instructions
ESD protection
ESD can damage boards and associated components. Infineon recommends that you perform procedures only
at an ESD workstation. If an ESD workstation is not available, use appropriate ESD protection by wearing an
antistatic wrist strap attached to the chassis ground (any unpainted metal surface) on the board when handling
parts.
Handling boards
CYW989820M2EVB-01 evaluation boards are sensitive to ESD. Hold the board only by its edges. After removing
the board from its box, place it on a grounded, static-free surface. Use a conductive foam pad if available. Do
not slide the board over any surface. Any physical action on CYW989820M2EVB-01 such as changing wires,
jumper settings, or measuring voltages can cause stress on the CYW989820M2EVB-01 printed circuit board
assembly (PCBA). You must ensure that the PCBA has proper support on the bottom side to avoid stress on the
PCBA when the EVB is in operation.

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CYW989820M2EVB-01 evaluation kit user guide
Introduction
1 Introduction
Thank you for your interest in the CYW989820M2EVB-01 evaluation kit. CYW989820M2EVB-01 enables
customers to evaluate and develop single-chip Bluetooth® and Bluetooth® Low Energy (LE) applications using
CYW89820, dual-mode Bluetooth 5.2 (Bluetooth® LE and BR/EDR) wireless MCU.
CYW989820M2EVB-01 can be used with ModusToolbox™software to develop and debug your CYW89820
project. The evaluation board (EVB) offers footprint-compatibility with Arduino shields. The development
environment is compatible with Windows, macOS, and Linux operating systems. In addition, the kit features an
onboard programmer/debugger (KitProg3). The EVB supports 1.8 V, 3.0 V, and coin-cell operation.
Note: This document applies to ModusToolbox™software 2.4 (or later).
The EVB is available through the Infineon Online Store or through our distributors.
1.1 CYW989820M2EVB-01 kit contents
The EVB includes the following:
CYW989820M2EVB-01 evaluation board
USB 2.0 Type-A to micro-B cable
Quick start guide
Figure 1 CYW989820M2EVB-01 kit contents
Inspect the kit contents. If you find any part missing, contact your nearest Infineon sales office for assistance:
www.infineon.com/support.

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Introduction
1.2 CYW989820M2EVB-01 evaluation board details
Figure 2 shows CYW989820M2EVB-01 evaluation board with the following features:
1. CYW89820 carrier module with onboard antenna
2. Expansion headers compatible with Arduino shields
3. Support for 1.8 V, 3.0 V, and coin-cell operation of the CYW89820M2EVB-01 device
4. Recovery button (Red), Reset button (Blue), and User button (Black)
5. Onboard micro-USB connector (J6) for programming and debug purposes
The USB micro-B connector (J6) supports UART connections and provides +5 V power to the board. See
Jumpers and Buttons and switches for complete information on DIP switches and jumper settings.
Do the following before connecting the board and verifying the driver installation:
1. Verify that all the jumpers are in the default configuration as shown in Table 4 to Table 9, so that Peripheral
UART is selected and can display embedded application trace messages. Figure 2 shows the default jumper
locations.
2. Connect the USB connector (J6) of the evaluation board to the development PC with the provided USB
cable. The USB UART driver should load automatically. If the evaluation board is not detected as a USB
device, reinstall the USB UART driver in ModusToolbox™installation directory.
For Windows and macOS: <install>\tools_2.4\driver_media\dpinst.
For Linux: <install>\tools_2.4\driver_media\install_driver\dpinst.
Figure 2 CYW989820M2EVB-01 evaluation board

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Introduction
Figure 3 highlights the LEDs provided on CYW989820M2EVB-01:
D3 (Green) indicates that VDD3P0 (3.0 V) power is ON
D15 (White) indicates HCI UART activity
D16 (Purple) indicates peripheral UART activity
D5 (Yellow) indicates KitProg3 status
D1 (Yellow) and D2 (Red) are generic user LEDs controlled by GPIOs. A label on the back of the kit provides
the pin mapping.
Figure 3 CYW989820M2EVB-01 evaluation board LEDs
1.3 ModusToolbox™
ModusToolbox™is a free software development ecosystem that includes the Eclipse IDE for ModusToolbox™,
Bluetooth® SDK, and the PSoC™6 SDK to develop applications for Infineon IoT products. Eclipse IDE for
ModusToolbox™is a multi-platform, integrated development environment (IDE) used to create new
applications, update application code, change middleware settings, and program/debug applications.
Using ModusToolbox™, you can enable and configure device resources and middleware libraries, write C source
code, and program and debug the device. The IDE provides hooks for launching various tools provided by the
SDK, called Bluetooth® SDK (BT SDK).
The BT SDK provides the central core of the ModusToolbox™software for creating Bluetooth® applications. It
contains configuration tools, drivers, libraries, middleware, make files, as well as various utilities, and scripts.
You may use these tools in any development environment you prefer.
For detailed information on ModusToolbox™installation and usage, see the ModusToolbox™user guide.

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Introduction
1.3.1 ModusToolbox™code examples
ModusToolbox™includes many code examples. Many of these code examples are compatible with this kit. You
can either browse the collection of starter applications during application set up through File > New >
ModusToolbox™Application or browse the collection of code examples on Infineon’s GitHub repository. See
Figure 4 and Figure 5 for details.
Figure 4 Code examples in ModusToolbox™
Figure 5 Searching for online code examples in ModusToolbox™

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Introduction
1.3.2 Related code examples
You can access the kit code examples from the GitHub repository. The CYW989820M2EVB-01 evaluation board
is pre-programmed with the Find Me Profile (CE226123 – BLE Find Me with CYW89820) code example out-of-the-
box.
This code example is available in ModusToolbox™as shown in Figure 4.For the most recent version of the code
example, check the GitHub repository. You can find the CE226123 code example in
github.com/Infineon/mtb-example-btsdk-ble-findme.
For more details on the functionality, design and implementation of the code example, see the code example
document present in the same folder as that of the code example. To import the most recent version of the
GitHub code examples into ModusToolbox™, see the ModusToolbox™user guide document (Help >
ModusToolbox™Documentation > User guide).
1.3.3 ModusToolbox™help
Launch ModusToolbox™and navigate to the following items:
Quick Start Guide: Choose Help > Eclipse IDE for ModusToolbox™Documentation > Quick Start Guide.
This guide gives you the basics for using ModusToolbox™.
ModusToolbox™General Documentation: Choose Help > ModusToolbox™General Documentation >
ModusToolbox™Documentation Index. This page provides link to various ModusToolbox™documents.
ModusToolbox™User Guide: Choose Help > Eclipse IDE for ModusToolbox™Documentation > User
Guide. This is a comprehensive guide for creating, building, and programming ModusToolbox™
applications.
1.4 Getting started
This user guide will help you find details of the CYW989820M2EVB-01 Evaluation Kit:
The Kit operation chapter describes the operation of the kit and how to use its various features.
The Hardware chapter describes the design details of the CYW989820M2EVB-01 hardware blocks.
1.5 IoT resources and technical support
Infineon provides a wealth of product documentation at https://www.infineon.com/products/wireless-
connectivity to help you to select the right IoT device for your design. Also, a professional community at
community.infineon.com supplies developers the latest software and tools to solve common evaluation and
integration problems while interacting directly with both Infineon engineers and experienced peers.

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K
it operation
2 Kit operation
This section provides detailed instructions to set up the Infineon CYW989820M2EVB-01 evaluation board to use
with Infineon ModusToolbox™for Bluetooth® Classic (aka BR - Basic Rate and EDR – Enhanced Data Rate) and
Low Energy (LE) applications.
This chapter introduces you to CYW989820M2EVB-01 and the features that will be used as part of the kit
operation. This chapter also discusses features such as the Bluetooth® connectivity and
programming/debugging as well as the USB-UART bridge device that can be used to communicate with the
CYW89820-A1 device on this EVB.
2.1 Theory of operation
CYW989820M2EVB-01 is built around the CYW89820 device. Figure 6 shows the block diagram of the CYW89820-
A1 device. See the device datasheet for details on device features.
Figure 6 Block diagram of CYW89820

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Kit operation
Figure 7 illustrates the block diagram of CYW989820M2EVB-01. This board contains a CYW89820 Bluetooth®
SoC and a USB-Serial interface/programmer. The kit features Arduino form-factor-compatible headers, which
enable Arduino shields to be plugged in, extending the EVB’s capabilities. It also features one user switch, one
reset switch, one recovery switch, two user LEDs, a thermistor, an ambient light sensor, and multiple power
supply options.
Figure 7 Block diagram of CYW989820M2EVB-01
Figure 8 and Figure 9 show the markup of the CYW989820M2EVB-01 evaluation board. See the list below for a
description of the numbered items.
Figure 8 CYW989820M2EVB-01 evaluation board (Top view)

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Kit operation
Figure 9 CYW989820M2EVB-01 evaluation board (Bottom view)
1. Peripheral enable (J19): The jumper allows the user to connect and disconnect the VDDIO supply to on-
board peripheral devices like motion sensor, thermistor, analog mic, and real-time clock by disabling VDDP.
2. VIO_BASE select jumper (J7): This jumper is used to select the VIO_BASE power source. Possible selections
are 3.0 V, 1.8 V, or VCOIN, which is the coin-cell power supply on the bottom side of the board.
3. Power indicator LED (D3): This LED is used to indicate the status of power supplied to board.
4. VBAT select jumper (J8): This jumper is used to select the VBAT (core power supply) power source. The
possible selections are 3.0 V, 1.8 V, or VCOIN which is the coin-cell power supply on the bottom side of the
board.
5. USB connector (J6): J6 is a micro-B USB female connector for connecting the kit to PC using the provided
USB cable. It is used for programming and USB-UART communication.
6. VPA_BT select jumper (J16): This jumper is used to select the VPA_BT (power amplifier supply) power
source. This select header applies to evaluation boards that has an internal power amplifier and it is not
connected to CYW89820 in CYW989820M2EVB-01 evaluation board.
7. KitProg3 (PSoC™5LP) programmer and debugger (CY8C5868LTI-LP039, U12): The PSoC™5LP
(CY8C5868LTI-LP039) serving as KitProg3, is a multi-functional system, which includes a Serial Wire Debug
(SWD) programmer, debugger, USB-I2C bridge and USB-UART bridge. For more details, see the KitProg3
user guide.
8. KitProg3 programming mode selection button (SW5): This switch can be used to switch between various
modes of operation of KitProg3 (CMSIS-DAP BULK, CMSIS-DAP HID or DAPLink modes). This switch is not
used for CYW989820M2EVB-01 because the board supports only one mode.
9. HCI-UART indication LED (D15): This White LED indicates the status of HCI-UART.
10.PUART indication LED (D16): This Purple LED indicates the status of PUART.
11.KitProg3 status indication LED (D5): This Yellow LED indicates the status of KitProg3.This is not useful for
CYW989820M2EVB-01 because the board supports only one mode.
12.SWD/GPIO switch (SW8): This switch allows you to route the functionality of GPIO/SWD lines to either J4
Arduino-compatible header or the J13 debug header.
13.Debug header (J13): J13 is a 10-pin interface header that can be used to connect an external debugger via
SWD.

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Kit operation
Note: J13 should only be used to connect a debugger. If something else is connected to J13 to
communicate with KitProg3, a voltage mismatch can occur.
14.Recovery button (SW1): This button is used to put the device in recovery mode. To put the device in
recovery mode, press and hold the recovery button, press and release the reset button, and then release the
recovery button. You may need to put the device in recovery mode when the application download fails.
15.Arduino-compatible header (J1): The Arduino-compatible I/O header brings out pins from CYW89820 to
interface with Arduino shields.
16.Reset button (SW2): This button can be used to reset the device.
17.Arduino-compatible header (J2): The Arduino-compatible I/O header brings out pins from CYW89820 to
interface with Arduino shields.
18.User button (SW3): This button can be used to provide an input to the CYW89820 device. Note that the
button connects the CYW89820 pin to ground when pressed; therefore, the CYW89820 pin must be
configured as a digital input with resistive pull-up for detecting the button press.
19.User LEDs (D1 and D2): These onboard LEDs can be controlled by the CYW89820 device. The LEDs are active
LOW; therefore, these pins must be driven to ground to turn ON the LEDs.
20.LED enable switch (SW4): This switch is used to connect/disconnect the user-controlled LEDs from the
CYW89820 device.
21.Carrier module (U1): The carrier module has the CYW89820 SoC on it. A Bluetooth® antenna is etched on
the carrier module PCB. The carrier module is interface with the baseboard through M.2 interface.
22.Serial Flash Memory(U1.U3): serial interface Flash memory
23.CYW89820 (U1. U2): The Bluetooth® (BR/EDR- Basic Rate and Enhanced Data Rate) and Bluetooth® Low
Energy 5 qualified system-on-chip from Infineon is the heart of this evaluation kit.
24.PCB antenna (A1): The PCB antenna is the EM wave radiating part of the evaluation board, which is fed
from the BT_RFIO pad of CYW89820 followed by a band-pass filter and an antenna matching circuit.
25.External antenna connector (U1.J1): The external antenna connector is an RF connector fed from the
BT_RFIO pad of the CYW89820 device followed by a band pass filter. See Hardware design guidelines on
the product page for more details.
26.Thermistor (TH2): The on-board thermistor is an NTC analog thermistor that can be used to measure
temperature.
27.Thermistor enable jumper (J18): This jumper can be used to connect or disconnect the onboard
thermistor from the CYW89820 device.
28.Arduino-compatible header (J4): The Arduino-compatible I/O header brings out pins from CYW89820 to
interface with Arduino shields.
29.WICED header (J12): This header brings out some pins of the CYW89820 device that are not connected to
the Arduino compatible headers. These pins can be used for testing or for custom applications.
30.Arduino-compatible header (J3): The Arduino-compatible I/O header brings out pins from CYW89820 to
interface with Arduino shields.
31.WICED header (J11): This header brings out some pins of the CYW89820 device that are not connected to
the Arduino compatible headers. These pins can be used for testing or for custom applications.
32.64-Mb serial flash (U11): This is the 64-Mbit SPI flash used for application purpose.
33.PUART voltage level translator (U8): This voltage level translator IC allows the interoperability of devices
(CYW89820 device and USB/Serial IC) with different high – level and low – level voltages for input and output
operations.
34.HCI-UART voltage level translator (U7): This voltage level translator IC allows interoperability of devices
(CYW89820 device and USB/Serial IC) with different high-level and low-level voltages for input and output
operations.

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Kit operation
35.VDDIO current measurement jumper (J17): This jumper is used to power the carrier module. To measure
the current consumed by the carrier module, remove this jumper and connect an ammeter to the two pins.
36.Ambient light sensor (U10): This is an I2C-based ambient light sensor.
37.Analog mic (MIC1): It is not supported by CYW989820.
38.Digital mic (U13): The digital microphone ASIC contains an extremely low – noise preamplifier and a high-
performance sigma-delta ADC.
39.Debug/programming mode select switch (SW15): This switch allows you to route the functionality of
KitProg3/GPIO lines to either the PSoC™5LP based KitProg3 or J4 Arduino-compatible header.
40.Coin cell holder (BT1): This is a coin cell battery holder located on the bottom side of the development kit.
If the evaluation board needs to use the power supplied from the coin cell, then the VDDIO, VBATT and
VPA_BT select headers must be set to VCOIN.
41.P-UART flow control switch (SW17): This switch allows you to enable and disable the PUART flow control
functionality.
2.2 Jumpers
Table 4 to Table 9 list the jumper settings on the CYW989820M2EVB-01 board.
Table 4 Jumper J7 pin configurations
Jumper J7
(VIO_BASE
selection)
Default state Connection on
CYW89820
Description
2 and 3 Shorted VDDO1, VDDO2 Short these pins to supply 3.0 V to VIO_BASE of the
CYW89820 device, as well as all peripherals and
sensors.
3 and 4 Open Short these pins to supply 1.8 V to VIO_BASE of the
CYW89820 device, as well as all peripherals and
sensors.
1 and 3 Open Short these pins to supply VIO_BASE of the
CYW89820 device, as well as all peripherals and
sensors from the coin cell supply (VCOIN).
Table 5 Jumper J8 pin configurations
Jumper J8 (VBAT
selection)
Default state Connection on
CYW89820
Description
2 and 3 Shorted SR_PVDD,
PMU_AVDD
Short these pins to supply 3.0 V to VBAT of the
CYW89820 device. Also, use this jumper to measure
the current consumption of VBATT when using 3.0-
V supply.
3 and 4 Open Short these pins to supply 1.8 V to VBATT of the
CYW89820 device. Also, use this jumper to measure
the current consumption of VBATT when using 1.8-
V supply.
1 and 3 Open Short these pins to use the coin cell supply VBATT
of the CYW89820 device. Also, use this jumper to
measure the current consumption of VBATT when
using the coin cell supply (VCOIN).

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Table 6 Jumper J18 pin configuration
Jumper J18
(Thermistor
connect/
disconnect)
Default state Connection on
CYW89820
Description
1 and 2 Shorted P8 Short this jumper to connect the on-board
thermistor to CYW89820.
Table 7 Jumper J17 pin configuration
Jumper J17
(VDDIO current
measurement)
Default state Connection on
CYW89820
Description
1 and 2 Shorted VDDIO1, VDDIO2 Short this jumper to supply power to the I/O
domain (VDDIO) of CYW89820. Also, use this jumper
to measure the current consumption of the I/O
domain.
Table 8 Jumper J19 pin configuration
Jumper J19
(Peripheral
enable)
Default state Connection on
CYW89820
Description
1 and 2 Shorted NA Allows power to on-board peripherals such as
ambient light sensor.
Table 9 Jumper J16 pin configurations
Jumper J16
(VPA_BT current
measurement)
Default state Connection on
CYW89820 device
2 and 3 Shorted NC_0
(PALDO_VDDIN)
This select header applies to evaluation boards
that has an internal power amplifier and it is not
connected to CYW89820 in the CYW989820M2EVB-
01 evaluation board.
3 and 4 Open This select header applies to evaluation boards
that has an internal power amplifier and it is not
connected to CYW89820 in the CYW989820M2EVB-
01 evaluation board.
1 and 3 Open This select header applies to evaluation boards
that has an internal power amplifier and it is not
connected to CYW89820 in the CYW989820M2EVB-
01 evaluation board.
Note: VDDIO must be greater or equal to VBATT. CYW89820 uses an on-chip low-voltage detector to shut
down the chip when supply voltage (VBATT) drops below the operating range. The shutdown
voltage (VSHUT) lies between a minimum of 1.5 V and a maximum of 1.7 V. See the datasheet for
more details.

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Kit operation
2.3 Buttons and switches
Table 10 Button functionality
Buttons Pressed state Connection on
CYW89820
Description
SW1 GND RECOVER Recovery button* (Red)
SW2 GND RST_N Active LOW Reset button (Blue)
SW3 GND P4 User application button (Black)
Note: *See the Recovery button (SW1): under Theory of operation.
The switch SW4 enables or disables the two onboard user LEDs. By default, both LED1 and LED2 are enabled.
Table 11 SW4 slide switches configuration
SW4 Default state Connection on
CYW89820
Description
POS 1 ON NC Enables LED1
ON NC Enables LED2
POS 2 OFF NC Enables DMIC_CLK
OFF NC Enables DMIC_DATA
SW8 is a slide switch. Pos 1 allows RSVD_4 and RSVD_5 to be used for SWD functionality for the debugger
interface. Pos 2 allows P2 and P3 to be used for SWD functionality for the debugger interface and when using P2
and P3 as GPIOs, keep SW8 in the Pos2 position.
Table 12 SW8 slide switches configuration
Slide SW8 Default state Connection on
CYW89820
Description
POS 1 OFF RSVD_4 Connects RSVD_4 to the Arduino-compatible header
pin RSVD_4 if the slide switch is in the OFF state.
Connects RSVD_4 to the debug header if the slide
switch is in the ON state.
OFF RSVD_5 Connects RSVD_5 to the Arduino-compatible header
RSVD_5 if the slide switch is in the OFF state.
Connects RSVD_5 to the debug header if the switch
is in the ON state.
POS 2 ON P2 Connects P2 to the Arduino-compatible header pin
ARD_D4_SWDCLK if the slide switch is in the OFF
state. Connects P2 to the debug header if the slide
switch is in the ON state.
ON NC Connects P3 to the Arduino-compatible header pin
ARD_D45SWDIO if the slide switch is in the OFF
state. Connects P3 to the debug header if the slide
switch is in the ON state.

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2.4 Arduino-compatible headers
J3, J4, J11, and J12 are the Arduino-compatible headers.
Table 13 Header J3 pin configuration
Header J3 Arduino pin Connection on
CYW89820
WICED Enum
name
Description
1 SCL P28 WICED_P28 I2C SCL
2 SDA P29 WICED_P29 I2C SDA
3 AREF NC - NC
4 GND GND - Ground
5 D13 NC - NC
6 D12 NC - NC
7 D11 NC - NC
8 D10 NC - NC
9 D9 NC - NC
10 D8 P14 WICED_P14 GPIO
Table 14 Header J4 pin configuration
Header J4 Arduino pin Connection on
CYW89820
WICED Enum
name
Description
1 D7 NC - NC
2 D6 NC - NC
3 D5 NC - NC
4 D4 P2 WICED_P02 GPIO
5 D3 P1 WICED_P01 GPIO
6 D2 NC - NC
7 D1 P32 WICED_P32 PUART TX
8 D0 P37 WICED_P37 PUART RX
Table 15 Header J1 pin configuration
Header J1 Arduino pin Connection on CYW89820 Description
1 NC NC NC
2 VIO_BASE VDDIO I/O reference pin used by shields to determine
the I/O voltage. Connected to VDDIO on this
board. Therefore, IOREF follows 1.8 V or 3.0 V,
or VCOIN of VDDIO.
3 RST ARD_RST/P1 Arduino Reset (R72 install position A) (See
Device reset) / P1 (R72 install position B).
4 3V0 VDD3P0 3.0-V supply output to the Arduino Shield.
5 5V VDD5V 5-V supply output to the Arduino Shield.
6 GND GND Ground
7 GND GND Ground
8 NC NC NC

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Table 16 Header J2 pin configuration
Header J2 Arduino pin Connection on
CYW89820
WICED Enum
name
Description
1 A0 NC - Thermistor ADC
2 A1 NC - -
3 A2 P10 WICED_P10 GPIO/PUART CTS
4 A3 NC - PUART_RTS_L
5 A4 NC - -
6 A5 NC - -
Note: When accessing Arduino pins, remove the jumpers that may interfere with the Arduino pins such as
PUART jumpers and thermistor jumper.
2.5 Other headers
J11 and J12 are test headers which bring out certain pins of CYW89820 for testing.
Table 17 Header J11 pin description
Header J11 Connection to
header pin
Connection on
CYW89820
WICED Enum
name
Description
1 BT_UART_CTS_L UART_CTS_L NC BT_UART_CTS
2 LED1_L P27 WICED_P27 LED1 connection.
3 LED2_L P26 WICED_P276 LED2 connection.
4 RSVD_10 P9 – SF_SCLK
5 RSVD_11 NC – NC
6 RSVD_12 HOST_WAKE – Signal to wake up the host
7 COEX1 NC – No connect.
8 COEX2 NC – No connect.
9 COEX3 NC – No connect.
10 GND GND – Ground.
Table 18 Header J12 pin description
Header J12 Connection to header pin Connection on CYW89820 Description
1 RSVD_1_USER_BTN P4 SW3 user button connection.
2 RSVD_2 P13 WP_L/IO2
3 RSVD_3 P12 SWDIO_ALT
4 RSVD_4 NC WDCK_ALT
5 RSVD_5 NC HOLD_L/IO3
6 RSVD_6 P6 SF_MOSI.
7 RSVD_7 P17 SF_MISO.
8 RSVD_8 NC Ambient light sensor INT.
9 RSVD_9 P11 (WICED_P11) SF_CS_L
10 VIO_BASE NC

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J13 is a 10-pin debugger header to debug CYW989820M2EVB-01 using SWD.
Table 19 Header J13 pin description
Header J13 Connection to
header pin
Connection on
CYW89820
WICED Enum
name
Description
1 VDDIO VDDIO VDDIO reference.
2 D5/SWDIO NC - Serial wire debug input output. SW8
switch 2 must be in the OFF position
for this connection to be made.
3 GND GND Ground.
4 D4/SWDCK P2 WICED_P02 Serial wire debug clock.
SW8 switch 1 must be in the OFF
position for this connection to be
made.
5 GND GND – Ground.
6 NC NC – No connect.
7 GND GND – Ground.
8 NC NC – No connect.
9 GND GND – Ground.
10 SWD_RST BT_RST_N – CYW89820 device reset.
Note: J13 should be used only to connect a debugger. If not, a voltage mismatch can occur.
2.6 USB serial interface chip
A CY8C5868LTI-LP039 PSoC™5 LP chip is used for onboard programming and USB-Serial functionality. It
connects to the computer over a USB interface and connects to the CYW89820-A1 device through the HCI UART
and PUART pins.
2.7 Kit power supply
The kit can be powered by one of two power sources: USB or coin-cell battery.
As shown in Figure 7, the USB power is connected to two buck regulators, one regulating the voltage to 1.8 V
and the other to 3.0 V. A coin-cell battery can be directly connected without the need of a regulator. See
Table 4, Table 5, Table 7, and Table 9 to understand the jumper settings for power selection.
2.8 Test points
There are two ground test points for easy connection of probes. The voltage from various power domains can
be measured from their respective headers (J7, J8, and J16).
Table 20 Ground test points available in CYW989820M2EVB-01
Label Description
TP7, TP8 Test points for ground