NXP Semiconductors KW45B41Z-EVK User manual

KW45B41Z-EVKUM

KW45B41Z-EVK Board User Manual

Rev. 2 — 13 February 2023 User manual

Document information

Information Content

Keywords KW45B41Z-EVKUM, KW45B41Z-EVK, KW45B41Z, Bluetooth LE 5.3, CAN FD, LIN

Abstract The KW45B41Z-EVK board is a highly configurable, low-power, and cost-effective, evaluation and

development platform for NXP KW45B41Z MCU, which is a low-power, highly secure, single-chip

wireless MCU supporting Arm Cortex-M33 core

NXP Semiconductors KW45B41Z-EVKUM

KW45B41Z-EVK Board User Manual

1 KW45B41Z-EVK overview

The KW45B41Z-EVK board is a highly configurable, low-power, and cost-effective, evaluation and development

platform for NXP KW45B41Z microcontroller (MCU), which is a low-power, highly secure, single-chip wireless

MCU supporting Arm Cortex-M33 core. It offers an easy-to-use user interface with a virtual serial port and

standard programming and run-control capabilities.

The KW45B41Z MCU includes a 96 MHz Arm Cortex-M33 CPU, a radio transceiver operating in the 2.4 GHz

frequency band (supporting GFSK modulations for Bluetooth Low Energy (LE) 5.3), Bluetooth LE controller

stack, transceiver drivers, up to 1 MB flash, up to 128 KB SRAM, and peripherals optimized to meet the

requirements of target applications. The KW45B41Z MCU supports multiprotocol use cases with Matter, Thread,

Zigbee, Bluetooth LE, and CAN FD for IoT, industrial, and automotive applications.

The KW45B41Z-EVK board provides RF circuitry (including antenna), CAN and LIN transceivers, 16 Mbit

QSPI NOR flash memory, accelerometer, and 32 MHz crystal. It is compatible with the Arduino UNO R3 and

Mikroe click boards. The board is a standalone PCB that supports application development with GFSK libraries

from NXP. It can be used with a wide range of development tools, including NXP MCUXpresso IDE and IAR

Embedded Workbench. The board is lead-free and RoHS-compliant.

For debugging the KW45B41Z MCU, the KW45B41Z-EVK board uses an onboard debug probe, known as

MCU-Link OB (OB stands for "onboard"), which is based on another MCU, LPC55S69. For simplicity, MCU-

Link OB is referred to as "MCU-Link debug probe" or just "MCU-Link" and the KW45B41Z MCU is referred to as

"target MCU" in this document.

This document provides details about the KW45B41Z-EVK board interfaces, power supplies, clocks, push

buttons, jumpers, and LEDs.

Note: For information on the operating temperature range for the board, see Board operating conditions.

1.1 Radio Equipment Directive compliance information

The following information is provided per Article 10.8 of the Radio Equipment Directive 2014/53/EU:

•Frequency bands in which the equipment operates

•The maximum RF power transmitted

Part number RF technology Frequency ranges (EU) Maximum transmitted power

KW45B41Z-EVK Bluetooth LE 2360 MHz – 2483 MHz +10 dBm

EUROPEAN DECLARATION OF CONFORMITY (Simplified DoC per Article 10.9 of the Radio Equipment

Directive 2014/53/EU)

This apparatus, namely KW45B41Z-EVK Development Platform, conforms to the Radio Equipment Directive

2014/53/EU. The full EU Declaration of Conformity for this apparatus is available at European Union Declaration

of Conformity for KW45B41Z-EVK Evaluation Kit.

1.2 Acronyms and abbreviations

Table 1 lists and explains the acronyms and abbreviations used in this document.

Term Description

4PDT Four pole double throw

ADC Analog-to-digital converter

Table 1. Acronyms and abbreviations

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KW45B41Z-EVK Board User Manual

Term Description

CAN Controller area network

DNP Do not populate

FD Flexible data-rate

GFSK Gaussian frequency shift keying

GND Ground

GPIO General-purpose input/output

GPO General-purpose output

HID Human interface device

HMI Human–machine interaction

HS High-speed

I2C Inter-integrated circuit

IDE Integrated development environment

IoT Internet of things

ISP In-System Programming

LE Low Energy

LED Light-emitting diode

LIN Local interconnect network

LPI2C Low-Power Inter-Integrated Circuit

LPSPI Low-Power Serial Peripheral Interface

LPUART Low-Power Universal Asynchronous Receiver/Transmitter

MCU Microcontroller unit

NC Not connected

NMI Non-maskable interrupt

OS Operating system

OTA Over-the-air

PCS Peripheral chip select

PER Packet error rate

PMIC Power management integrated circuit

POR Power-on reset

ppm Parts per million

PWM Pulse width modulation

QSPI Quad serial peripheral interface

RTC Real-time clock

SMA Subminiature version A

SPI Serial peripheral interface

SWD Serial wire debug

Table 1. Acronyms and abbreviations...continued

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KW45B41Z-EVK Board User Manual

Term Description

SWO Serial wire debug trace output

TCXO Temperature compensated crystal oscillator

UART Universal asynchronous receiver/transmitter

USB Universal serial bus

USBSIO USB serial input/output

UWB Ultra-wideband

VCOM Virtual communication

WUU Wake-up unit

Table 1. Acronyms and abbreviations...continued

1.3 Related documentation

Table 2 lists and explains the additional documents and resources that you can refer to for more information on

the KW45B41Z-EVK board. Some of the documents listed below may be available only under a non-disclosure

agreement (NDA). To request access to these documents, contact your local field applications engineer (FAE)

or sales representative.

Document Description Link / how to access

KW45 Reference Manual Intended for system software and hardware

developers and application programmers who want to

develop products with KW45B41Z MCU

KW45RM.pdf

KW45 Product Family Data Sheet Provides information about electrical characteristics,

hardware design considerations, and ordering

information

KW45.pdf

Hardware Design Considerations for

KW45B41Z and K32W148 Bluetooth LE

Devices (AN13227)

Provides PCB design considerations for new designs

based on NXP KW45B41Z and K32W148 MCUs

AN13227.pdf

KW45B41Z-EVK RF System Evaluation

Report for Bluetooth Low Energy

Applications (AN13228)

Describes the KW45B41Z-EVK board RF system

evaluation report for Bluetooth LE applications

AN13228.pdf

KW45B41Z-EVK Co-existence with RF

System Evaluation Report for Bluetooth

Low Energy Application (AN13229)

Provides the RF evaluation test results of the KW45

B41Z-EVK board for Bluetooth LE applications (2FSK

modulation)

AN13229.pdf

LPC55S6x/LPC55S2x/LPC552x User

manual (UM11126)

Intended for system software and hardware

developers and application programmers who want

to develop products with LPC55S6x/LPC55S2x/

LPC552x MCU

UM11126.pdf

Table 2. Related documentation

1.4 Board kit contents

The KW45B41Z-EVK board kit contains the following items:

•KW45B41Z-EVK board hardware assembly

•A USB cable

•Spare jumpers

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1.5 Block diagram

Figure 1 shows the KW45B41Z-EVK block diagram.

KW45B41Z

Auto-qualified

package

PWM

MCU-Link

JTAG

SWD

Reset

SW1 Red LED SWD

CAN PHY

P5V_CAN

P12V_VBAT LIN PHY

CAN connector

LIN connector

Arduino Uno R3

mikroBUS I/O headers

SMA

connector

Printed

inverted-F

antenna

NMI

SW2

WUU

SW3

NMI

QSPI NOR

flash memory

SPI

Ranger 4

connectors

J5-J6

SPI

I/O I/O

J3 J4 I/O headers

CAN

LIN

I/O I/O

32 MHz

SWD

UART/

SPI/

I2C

USB

micro-B

Arduino Uno R3 I/O headers

mikroBUS I/O headers

CAN/LIN

P12V

Accelerometer

Blue LED

GPIO

I2C

32.768 kHz I/O

I/O

I/O I/O

Lithium-ion/

external battery

header

VBAT

CR2032

5 V - 9 V

P5V

PMIC

Power selector

FL_USB_5V0

3V3 LDO

SWD

Wake-up

SW5

J12

J13

Boot config

SW4

Figure 1. KW45B41Z-EVK block diagram

1.6 Board features

Table 3 describes the features of the KW45B41Z-EVK board.

Board feature Target MCU feature used Description

MCU (target MCU) KW45B41Z MCU with Arm Cortex-M33 core running at a

frequency of up to 96 MHz

Note: For more details on the KW45B41Z MCU, see KW45

Product Family Data Sheet and KW45B41Z Reference

Manual.

CAN FlexCAN module (CAN0) A high-speed CAN transceiver for driving CAN signals

between the target MCU and a 1x4 pin header

Table 3. KW45B41Z-EVK features

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Board feature Target MCU feature used Description

LPUART/LIN Two LPUART modules (LPUART0

and LPUART1)

•LPUART0:

–Connects to a 1x4 pin LIN header through a LIN

transceiver for an external LIN connection

–Connects to one of the two mikroBUS socket connectors

for an external UART connection

–Connects to one of the four Arduino socket connectors

for an external UART connection

–Can be used for MCU-Link connection in place of

LPUART1

•LPUART1:

–Supports a USB-to-UART bridge for connecting MCU-

Link to the target MCU

–Connects to another Arduino socket connector for an

external UART connection

–Can be used for LIN connection in place of LPUART0

LPSPI One of the two LPSPI modules

(LPSPI1) with four peripheral chip

selects (PCS0, PCS1, PCS2, and

PCS3)

•PCS0: Connects to 16 Mbit QSPI NOR flash memory,

which supports over-the-air (OTA) programming

•PCS1: Connects to one of the two Ranger 4 socket

connectors

•PCS2: Connects to one of the four Arduino socket

connectors

•PCS3:

–Supports a USB-to-SPI bridge for connecting MCU-Link

to the target MCU

–Provides an alternative SPI connection to PCS0

connection

–Provides an alternative SPI connection to PCS2

connection

–Connects to one of the two mikroBUS socket connectors

LPI2C One of the two LPI2C modules (LPI2

C1)

LPI2C1 module connects to:

•MCU-Link through a USB-to-I2C bridge connecting MCU-

Link to the target MCU

•Power management integrated circuit (PMIC)

•Accelerometer

•One of the two mikroBUS socket connectors

•One of the four Arduino socket connectors

RF 2.4 GHz radio A PCB-integrated inverted-F antenna and an SMA connector

for RF operation

Accelerometer 3-axis, 12-bit, compact digital accelerometer

mikroBUS mikroBUS socket with two 1x8 position receptacles

Arduino Arduino UNO board compatible socket with four receptacles

(1x8, 1x10, 1x8, and 1x6 positions)

Ranger 4 Ranger 4 UWB board compatible socket with two

receptacles (2x10 and 2x8 positions)

MCU-Link USB USB 2.0 micro-B connector for creating MCU-Link high-

speed USB connection to the host computer, and providing 5

V power to the board

Table 3. KW45B41Z-EVK features...continued

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Board feature Target MCU feature used Description

Power supply •The board can be powered up through:

–Coincell battery

–USB micro-B connector

–DC power jack

–CAN header

–LIN header

–Arduino socket power connector

–VBAT header (DNP)

•Following power configuration modes are supported:

–DC-DC Converter with Buck mode

–DC-DC Converter with Bypass mode

–PMIC mode

–Smart Power Switch mode

Clock The target MCU receives the following two clocks:

•A 32 MHz clock from a crystal for Arm core and radio.

Alternatively, the 32 MHz clock can be provided from a

TCXO (not populated on the board).

•A 32.768 kHz clock from another crystal as RTC and low-

power RF clock

Debug •Onboard MCU-Link debug probe with CMSIS-DAP and

SEGGER J-Link protocol options. It can connect to the

target MCU through a USB-to-UART, USB-to-SPI, or USB-

to-I2C bridge.

•10-pin Arm JTAG/SWD connector for connecting an

external debug probe

Table 3. KW45B41Z-EVK features...continued

1.7 Board pictures

Figure 2 shows the top-side view of the KW45B41Z-EVK board, with connectors, push buttons, and LEDs

highlighted.

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KW45B41Z-EVK Board User Manual

J7 (SMA)

J11

(LIN)

J10

(CAN)

(power jack)

(Ranger 4)

ANT1

SW3

(WUU)

SW2

(NMI)

SW1

(reset)

SW4

(target MCU boot)

(Ranger 4)

J14

(USB)

J1 (Arduino DL)

J13 (mikroBUS)

J12 (mikroBUS)

J4 (Arduino AN)

J16

(SWD)

LED1

LED3

LED2

D12

D16

D17

D11

D14

D15

D13

J3 (Arduino PWR)

J2 (Arduino DH)

SW5

(wake-up)

Figure 2. KW45B41Z-EVK connectors, push buttons, and LEDs (top-side view)

Figure 3 shows the jumpers of the KW45B41Z-EVK board.

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JP18

JP1

JP33 JP3

JP5 JP21

JP22

JP19

JP30

JP37

JP7

JP8

JP4

JP12

JP10

JP9

JP14

JP6

JP28

JP26

JP20

JP25

JP41 JP17

JP2 JP34

JP16

JP35

JP15

Figure 3. KW45B41Z-EVK jumpers

Figure 4 shows the bottom-side view of the KW45B41Z-EVK board, with battery holder BT2 highlighted.

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BT2

(battery holder)

Figure 4. KW45B41Z-EVK bottom-side view

1.8 Connectors

Table 4 describes the KW45B41Z-EVK connectors. The connectors are shown in Figure 2 and Figure 4.

Part identifier Connector type Description Reference

section

BT1 (DNP)

(secondary option)

Holder for 3 V CR2450N lithium coincell battery

BT2 (primary

option)

Coincell battery holders

Note: BT1 and BT2 have

overlapping footprints (BT2 is

used by default).

Note: CAN and LIN

transceivers do not work

when using coincell battery.

Holder for 3 V CR2032 lithium coincell battery

J8 (DNP) 1x2 pin header Lithium-ion/external battery connector

J9 DC power jack Connector for 12 V power adapter

Section 2.1

J10 1x4 pin header CAN expansion header and 12 V power source Section 2.3

J11 1x4 pin header LIN expansion header and 12 V power source Section 2.4

J14 USB 2.0 micro-B receptacle MCU-Link USB connector Section 3.3

J7 SMA connector SMA RF connector

ANT1 Antenna PCB-integrated RF antenna

Section 2.7

J12

J13

1x8 position receptacles mikroBUS socket connectors Section 2.9

Table 4. KW45B41Z-EVK connectors

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