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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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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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
X3
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
RF
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
J2
J1
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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J7 (SMA)
J11
(LIN)
J10
(CAN)
J9
(power jack)
J6
(Ranger 4)
ANT1
SW3
(WUU)
SW2
(NMI)
SW1
(reset)
SW4
(target MCU boot)
J5
(Ranger 4)
J14
(USB)
J1 (Arduino DL)
J13 (mikroBUS)
J12 (mikroBUS)
J4 (Arduino AN)
J16
(SWD)
D7
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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Part identifier Connector type Description Reference
section
J1 1x8 position receptacle
J2 1x10 position receptacle
J3 1x8 position receptacle
J4 1x6 position receptacle
Arduino socket connectors Section 2.10
J5 2x10 position receptacle
J6 2x8 position receptacle
Ranger 4 UWB socket connectors Section 2.11
J16 2x5 pin header Arm JTAG (SWD) connector to connect an
external debug probe or external debug target
Section 3.5
J15 (DNP) 2x5 pin header MCU-Link SWD connector
Table 4. KW45B41Z-EVK connectors...continued
1.9 Jumpers
Table 5 describes the KW45B41Z-EVK jumpers. The jumpers are shown in Figure 3.
Part identifier Jumper type Description Reference section
JP18 1x2 pin header Reset LED enable jumper:
•Open: Reset LED is disabled
•Shorted (default setting): Reset LED is
enabled and it turns ON when Reset button
(SW1) is pressed
JP25 1x2 pin header Target MCU boot configuration button (SW4)
enable jumper:
•Open (default setting): SW4 is disabled
•Shorted: SW4 is enabled
Section 1.10
JP1 1x2 pin header PMIC 5 V input power enable jumper:
•Open: 5 V input power is disconnected from
PMIC
•Shorted (default setting): 5 V input power is
supplied to PMIC
JP2 1x2 pin header P1V8_EXT supply enable jumper:
•Open: P1V8_EXT supply is OFF
•Shorted (default setting): P1V8_EXT supply is
ON
JP3 1x2 pin header P1V1_EXT supply enable jumper:
•Open: P1V1_EXT supply is OFF
•Shorted (default setting): P1V1_EXT supply is
ON
JP4 1x3 pin header VDD_SWITCH supply power source selection
jumper:
•1-2 shorted (default setting): VDD_SWITCH
supply is produced from P3V3 supply
•2-3 shorted: VDD_SWITCH supply is
produced from MCU_VDD_REG supply
Section 2.1
Table 5. KW45B41Z-EVK jumpers
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Part identifier Jumper type Description Reference section
JP42 1x2 pin header Target MCU debugging enable jumper:
•Open: Target MCU debugging is disabled.
Note: To use VBAT supply (coincell power)
for producing P3V3 supply at jumper JP5,
pins 1-2 of JP5 must be shorted with a
shunt. With this setting, VBOARD supply is
unpowered. Therefore, VCC_TGMCU supply,
which is powered by VBOARD supply, is also
unpowered. This causes voltage level issues
on RST_TGTMCU_b signal to the target
MCU.
To avoid such issues, open JP42 before using
VBAT as source supply at JP5.
•Shorted (default setting): Target MCU
debugging is enabled
JP5 2x3 pin header P3V3 supply power source selection jumper:
•1-2 shorted: P3V3 supply is produced from
VBAT supply.
Note: To use VBAT supply (coincell power)
for producing P3V3 supply at JP5, pins 1-2
of JP5 must be shorted with a shunt. With
this setting, VBOARD supply is unpowered.
Therefore, VCC_TGMCU supply, which
is powered by VBOARD supply, is also
unpowered. This causes voltage level issues
on RST_TGTMCU_b signal to the target
MCU.
To avoid such issues, open jumper JP42
before using VBAT as source supply at JP5.
With JP42 open, target MCU debugging is
disabled.
•3-4 shorted (default setting): P3V3 supply is
produced from VBOARD supply
•5-6 shorted: P3V3 supply is produced from
PMIC_LDO2 supply
JP6 1x3 pin header VDD_REG supply power source selection
jumper:
•1-2 shorted (default setting): VDD_REG
supply is produced from P3V3 supply
•2-3 shorted: VDD_REG supply is produced
from VOUT_SWITCH power of the target
MCU
JP7 1x3 pin header VDD_DCDC supply power source selection
jumper:
•1-2 shorted (default setting): VDD_DCDC
supply is produced from VDD_REG supply
•2-3 shorted: VDD_DCDC supply is produced
from MCU_VDD_REG supply
JP8 1x3 pin header VDD_IO_ABC supply power source selection
jumper:
•1-2 shorted (default setting): VDD_IO_ABC
supply is produced from VDD_REG supply
Table 5. KW45B41Z-EVK jumpers...continued
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Part identifier Jumper type Description Reference section
•2-3 shorted: VDD_IO_ABC supply is
produced from MCU_VDD_REG supply
JP9 1x3 pin header VDD_ANA supply power source selection
jumper:
•1-2 shorted (default setting): VDD_ANA
supply is produced from VDD_REG supply
•2-3 shorted: VDD_ANA supply is produced
from MCU_VDD_REG supply
JP10 2x3 pin header V_SEC supply power source selection jumper:
•1-2 shorted: V_SEC supply is produced from
P1V8_EXT supply
•3-4 shorted: V_SEC supply is produced from
jumper JP37 output
•5-6 shorted (default setting): V_SEC supply is
produced from 1V8_DCDC supply
JP11 (DNP) 1x2 pin header VDD_PA_2G4 supply enable jumper. JP11 is
not populated on the board. If populated, it can
be used to enable VDD_PA_2G4 supply for +10
dBm RF output.
JP12 1x2 pin header VDD_LDO_CORE supply enable jumper:
•Open: VDD_LDO_CORE supply is OFF
•Shorted (default setting): VDD_LDO_CORE
supply is ON
JP14 1x2 pin header VDD_RF supply enable jumper:
•Open: VDD_RF supply is OFF
•Shorted (default setting): VDD_RF supply is
ON
JP15 1x2 pin header VDD_CORE supply enable jumper:
•Open (default setting): VDD_CORE supply is
OFF
•Shorted: VDD_CORE supply is ON
JP35 1x2 pin header MCU_VDD_REG supply enable jumper:
•Open: MCU_VDD_REG supply is OFF. This
jumper setting also enables onboard current
measurement using MCU-Link.
•Shorted (default setting): MCU_VDD_REG
supply is ON
JP37 1x3 pin header Jumper JP10 pin 4 power source selection
jumper:
•1-2 shorted (default setting): Jumper JP10 pin
4 input power is produced from VDD_REG
supply
•2-3 shorted: Jumper JP10 pin 4 input power is
produced from MCU_VDD_REG supply
JP41 1x2 pin header VBOARD supply enable jumper:
•Open: VBOARD supply is OFF
•Shorted (default setting): VBOARD supply is
ON
Table 5. KW45B41Z-EVK jumpers...continued
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Part identifier Jumper type Description Reference section
JP13 (DNP) 1x2 pin header
JP40 (DNP) 1x2 pin header
VOUT_SYS / VDD_SYS supply enable jumpers.
JP13 and JP40 are not populated on the board.
If populated, either can be used to enable
VOUT_SYS / VDD_SYS supply. JP13 uses the
P1V8_EXT supply as input whereas JP40 uses
the VDD_DCDC supply as input.
JS1 (DNP) 1x2 pin header VDD_MEM supply enable jumper. JS1 is not
populated but pin 1 and pin 2 positions of the
jumper are connected through a physical (trace)
connection on the secondary (bottom) side of
the PCB. Therefore, the VDD_MEM supply is
enabled, by default.
When populated, JS1 can be used to enable/
disable the VDD_MEM supply. If populating
the jumper to allow manual connection/
disconnection, cut the trace connection between
its pin 1 and pin 2 positions.
JS2 (DNP) 1x2 pin header P_LED supply enable jumper. JS2 is not
populated but pin 1 and pin 2 positions of the
jumper are connected through a physical (trace)
connection on the secondary (bottom) side
of the PCB. Therefore, the P_LED supply is
enabled, by default.
When populated, JS2 can be used to enable/
disable the P_LED supply. If populating
the jumper to allow manual connection/
disconnection, cut the trace connection between
its pin 1 and pin 2 positions.
JP16 1x3 pin header LPUART controller selection jumper for
receiving UART signal from MCU-Link:
•1-2 shorted (default setting): LPUART1
controller of the target MCU receives UART
signal from MCU-Link
•2-3 shorted: LPUART0 controller of the target
MCU receives UART signal from MCU-Link
JP17 1x3 pin header LPUART controller selection jumper for sending
UART signal to MCU-Link:
•1-2 shorted (default setting): LPUART1
controller of the target MCU sends UART
signal to MCU-Link
•2-3 shorted: LPUART0 controller of the target
MCU sends UART signal to MCU-Link
JP19 1x3 pin header LIN_RX signal direction control jumper:
•1-2 shorted (default setting): LIN_RX signal
direction is from J11 (pin 1) to the target MCU
(pin PTA16/PTC2)
•2-3 shorted: LIN_RX signal direction is from
the target MCU (pin PTA16/PTC2) to J11 (pin
1)
JP21 1x2 pin header USB-to-UART bridge disable jumper:
Section 2.4
Table 5. KW45B41Z-EVK jumpers...continued
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KW45B41Z-EVK Board User Manual
Part identifier Jumper type Description Reference section
•Open (default setting): MCU-Link is
connected to the target MCU through a USB-
to-UART bridge
•Shorted: The USB-to-UART bridge between
MCU-Link and the target MCU is disabled
JP34 1x2 pin header USB-to-SPI bridge disable jumper:
•Open: MCU-Link is connected to the target
MCU through a USB-to-SPI bridge
•Shorted (default setting): The USB-to-SPI
bridge between MCU-Link and the target
MCU is disabled. With this jumper setting, the
SPI PCS3 connection can be used to connect
the target MCU to the SPI NOR flash memory
(U4).
Section 2.5
JP30 1x2 pin header USB-to-I2C bridge enable jumper:
•Open: The USB-to-I2C bridge between MCU-
Link and the target MCU is disabled
•Shorted (default setting): MCU-Link is
connected to the target MCU through a USB-
to-I2C bridge
Section 2.6
JP43 1x3 pin header Accelerometer I2C address configuration (when
accelerometer acts as a secondary I2C device)
jumper:
•1-2 shorted (default setting): Accelerometer 8-
bit I2C addresses are as follows:
–Read address: 0x33
–Write address: 0x32
•2-3 shorted: Accelerometer 8-bit I2C
addresses are as follows:
–Read address: 0x31
–Write address: 0x30
Section 2.8
JP33 1x2 pin header Arduino socket power connector J3 12 V input
power enable jumper:
•Open: 12 V input power is disconnected from
Arduino socket power connector J3
•Shorted (default setting): 12 V input power is
supplied to Arduino socket power connector
J3
Section 2.10
JP20 1x2 pin header MCU-Link (LPC55S69) force ISP mode jumper:
•Open (default setting): MCU-Link follows
normal boot sequence (MCU-Link boots from
internal flash if a boot image is found). With
the internal flash erased, MCU-Link normal
boot sequence falls through to ISP boot
mode.
•Shorted: MCU-Link is forced to ISP mode
(USB1). Use this setting to reprogram MCU-
Link internal flash with a new image or use
the MCUXpresso IDE with CMSIS-DAP
protocol.
Section 3.2
Table 5. KW45B41Z-EVK jumpers...continued
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NXP Semiconductors KW45B41Z-EVKUM
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Part identifier Jumper type Description Reference section
Note: By default, MCU-Link flash is
preprogrammed with a version of CMSIS-DAP
firmware.
JP26 1x2 pin header MCU-Link debug probe target selection jumper:
•Open (default setting): The MCU-Link debug
probe or an external debug probe can be
connected to the onboard target MCU. Use
this setting when the target MCU operates in
Normal mode (its SWD (debug) interface is
enabled).
•Shorted: The MCU-Link debug probe can be
connected to an external target MCU. Use
this setting when using the MCU-Link debug
probe for debugging an external target MCU.
JP28 1x3 pin header Target power selection jumper:
•1-2 shorted (default setting): Onboard target
MCU is used as debug target or an external
target MCU is used as debug target but it
uses board power
•2-3 shorted: An external target MCU is used
as debug target and it uses its own power
Section 3.5
JP22 1x2 pin header MCU-Link serial wire debug (SWD) disable
jumper:
•Open (default setting): MCU-Link SWD
feature is enabled. MCU-Link drives SWD of
target MCU or external target MCU.
•Shorted: MCU-Link SWD feature is disabled.
This setting of JP22 can be used when
connecting an external debug probe for
debugging the target MCU.
For more information
on this jumper, see
KW45B41Z-EVK
schematics
Table 5. KW45B41Z-EVK jumpers...continued
1.10 Push buttons
Table 6 describes the KW45B41Z-EVK push buttons. The push buttons are shown in Figure 2.
Part identifier PCB label Button name Description
SW1 RST_SW Reset button Pressing SW1 resets the target MCU (KW45B41
Z) which causes board peripherals to reset to their
default states and executes the boot code. When
SW1 is pressed, the reset LED D7 turns ON if jumper
JP18 is shorted. If the target MCU is in Deep Power-
Down mode, then it comes out of this mode.
SW2 PTD1_NMI PB Non-Maskable Interrupt
(NMI) button
SW3 PTC6_WUU0 PB Wake-Up Unit (WUU)
button
Interrupt push buttons
SW4 BOOT CONFIG Boot Configuration button Helps the target MCU boot code to determine if the
MCU should enter into In-System Programming (ISP)
mode. The main purpose of this button is to force the
target MCU into ISP mode at boot time; to do this,
Table 6. KW45B41Z-EVK push buttons
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NXP Semiconductors KW45B41Z-EVKUM
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Part identifier PCB label Button name Description
hold down this button while pressing and releasing the
reset button, or while connecting power to the board.
If an application in the target MCU internal flash is
crashing or disabling the SWD port unintentionally,
then ISP mode can be useful to recover control of the
board. See KW45B41Z Reference Manual for more
information on ISP mode.
By default, SW4 is disabled. It can be enabled by
shorting jumper JP25.
SW5 SW_WAKE_UP Wake-Up button Wakes up the target MCU (KW45B41Z) from Deep
Power-Down mode
Table 6. KW45B41Z-EVK push buttons...continued
Figure 5 shows the circuit diagrams of the KW45B41Z-EVK push buttons.
Interrupt buttons
Reset button
NMI_b/ADC0_B5
LPSPI1_PCS1/WUU0_P11
MCU RST
GND
GND
GND
GND
GND
VBOARD
VBOARD
VBOARD
PTD1
PTC6
RST_TGTMCU_b
R39
100
SW3
KSC223JLFG
PTC6_WUU0 PB
1
3
4
2
C51
1000pF
TP10
D7
SML-D14U2WT86C
A
C
R16
10K
DNP
SW1
KSC223JLFG
RST_SW
1
3
4
2
JP18
HDR 1X2
LED_RST
1
2
C52
1000pF TP14
SW2
KSC223JLFG
PTD1_NMI PB
1
3
4
2
R24
10K
DNP
LED_RST
Boot configuration button
VBOARD
GND
R176
10K
SW5
KSC223JLFG
SW_WAKE_UP
1
3
4
2
SWITCH_WAKEUP_B
Wake-up button
VCC_IF_LINK
GND
PTA4/SWO/BOOT_CFG
JP25
HDR 1X2
BOOT CFG
1 2
C149
1000pF
DNP
SW4
KSC223JLFG
BOOT CONFIG
13
4 2
BOOT_CFG
Figure 5. Push button circuit diagram
1.11 LEDs
Table 7 describes the KW45B41Z-EVK light-emitting diodes (LEDs) that correspond to the target MCU. The
board also has some MCU-Link specific LEDs, which are described in Section 3.9. The LEDs are shown in
Figure 2.
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Part identifier LED color LED name/function Description
LED1 Red/green/blue RGB LED
LED2 Blue General-purpose LED
User application LEDs. Each of these LEDs can be
controlled through a user application.
LED3 Green Power-on indicator LED Indicates system power-on status. When the board
is powered up, LED3 turns ON.
D7 Red Reset LED Indicates system reset activity. When board reset
is initiated, for example, by pressing the reset
button, D7 turns ON.
Table 7. KW45B41Z-EVK LEDs
Figure 6 shows the circuit diagrams of the LEDs described in Table 7.
Power-on indicator LED
RGB LED
General-purpose LED
Reset LED
TPM0_CH2
LPSPI1_PCS0/TPM1_CH0
MCU RST
TPM0_CH0
VBOARD
P_LED
P_LED
P_LED
P_LED
GND
GND GND
GND
GND GND GND
GND GND
GND
VBOARD
PTB0
PTA19
PTA20
PTA21
RST_TGTMCU_b
R27
510
R39
100
R G
B
LED1
CLV1A-FKB-CK1vw1de1BB7C3C3
1
2
3
4
R28
470
JS2
HDR 1X2 TH
DNP
P_LED
1 2
Q2
BSH111BK
1
2 3
D7
SML-D14U2WT86C
AC
R29
270
R36
10K
Q1
BSH111BK
1
2 3
Q3
BSH111BK
1
2 3
Q4
BSH111BK
1
2 3
R37
10K
SW1
KSC223JLFG
RST_S W
1
3
4
2
R31 0
JP18
HDR 1X2
LED_RST
1
2
R38
10K
R33 0
R26
270
R30
270
R32
10K
R34 0
LED2
BLUE
A
C
LED3
LED_GREEN
AC
R35 0
LEDRGB_RED LEDRGB_GREEN
LEDRGB_BLUE
RGB_G
PO_LED
RGB_R
RGB_B
LED_G
LED_GP
LED_R LED_B
LED_RST
RF_GPO_2/TPM0_CH1
Figure 6. LED circuit diagrams
2 KW45B41Z-EVK functional description
This section describes the features and functions of the KW45B41Z-EVK board. You can use the functionality
described in this section as a reference while designing your own target board.
Note: For more details on the KW45B41Z MCU, see KW45 Product Family Data Sheet and KW45B41Z
Reference Manual.
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NXP Semiconductors KW45B41Z-EVKUM
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2.1 Power supplies
The KW45B41Z-EVK board can be powered up using the following means:
•From an external battery (coincell CR2032/CR2450). Two coincell battery options are provided for more
battery lifetime.
•Through the USB micro-B connector (J14), which produces 5 V power (FL_USB_5V0 supply). This supply
powers the MCU-Link 3.3 V regulator U15.
•From an external DC supply in the following ways:
–Connect to pin 1 of header J8 (not populated on the board) an adapter that can supply 1.8+0.3 V to 3.6+0.3
V DC power (+0.3 V is required due to the voltage drop of diode D1)
–Connect an adapter that can supply 12 V power to the connector J9. This option is used to power up CAN/
LIN functionality in the board. Alternatively, 12 V external power can be supplied through pin 3 of CAN
header J10 or pin 2 of LIN header J11.
–Connect a 12 V external power supply to pin 8 of Arduino socket power connector J3
The above primary power supplies are used to produce secondary power supplies for the board to power up
other board components, including the target MCU, MCU-Link, accelerometer, QSPI NOR flash memory, CAN
transceiver, LIN transceiver, mikroBUS socket, Arduino socket, Ranger 4 UWB socket, push buttons, and LEDs.
Many power supplies in the KW45B41Z-EVK board are produced through jumpers, which can be used to
configure their respective power supplies. This configuration includes enabling/disabling a power supply and
changing input power source for a power supply.
Figure 7, Figure 8, and Figure 9 show the circuit diagrams of major KW45B41Z-EVK power supplies.
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NXP Semiconductors KW45B41Z-EVKUM
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VBAT power
CAN/LIN power
USB / MCU-Link power
Coin cell
holder
Secondary
option
VBAT
GND
GND
GND
D2
RB160M-30
A
C
BT1
SMTU2450N-LF
DNP
1
2
C18
10uF
16V
BT2
S8421-45R
1
2
P3V3_BATT
P3V3_BATT
VBAT
GND
D1
RB160M-30
A
C
J8
HDR 1X2
DNP
1
2
LiIon / Ext Battery
Ex te r n a l 1 2 V
P12V
P12V_VBAT
P5V_CAN
GND GND
GND GND
D8
PNS40010ER
A
C
C61
0.1UF
16V
J9
CON PWR 3
1
2
3
SH1
SH2
+
C62
10UF
16V
C60
10UF
35V
U6
NCP1117ST50T3G
GND
1
VOUT
2
VIN
3
TAB
4
P12V
GND
J10
HDR 1X4 RA
1
2
3
4
P12V
GND
J11
HDR 1X4 RA
1
2
3
4
MICRO B
FL_USB_5V0
GND
GND
GND
R75
0
L11
330 OHM
12
R76
0
TP25
C110
2.2UF
GND VBUS
USB I D
DP
DM
U16
RClamp0854P.TCT
1
5
2
3
4
6
7
J14
ZX62D-B-5PA8(30)
MCU_LINK
VBUS
1
D-
2
D+
3
ID
4
GND
5
SHELL1
6
SHELL2
7
SHELL3
8
SHELL4
9
L10
330 OHM
1 2
VBUS_USB FL_USB1_DM
FL_USB1_DP
FL_USB_5V0
MLINK_3V3
GND
GND
GND
R73
0
C103
10uF
C104
10uF
XC6227C331PR-G
U15
CE
1
VSS
2
NC
3
VIN
4
VOUT
5
C102
0.022UF
C105
0.022UF
VOUT_MLINK
Figure 7. Power supply circuit diagram 1
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