NXP Semiconductors K32W148-EVK User manual

K32W148-EVKUM
K32W148-EVK Board User Manual
Rev. 1 — 13 February 2023 User manual
Document information
Information Content
Keywords K32W148-EVKUM, K32W148-EVK, K32W148, Bluetooth LE 5.3, IEEE 802.15.4
Abstract The K32W148-EVK board is a highly configurable, low-power, and cost-effective, evaluation and
development platform for NXP K32W148 MCU, which is a low-power, highly secure, single-chip
wireless MCU supporting Arm Cortex-M33 core

NXP Semiconductors K32W148-EVKUM
K32W148-EVK Board User Manual
1 K32W148-EVK overview
The K32W148-EVK board is a highly configurable, low-power, and cost-effective, evaluation and development
platform for NXP K32W148 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 K32W148 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 and OQPSK modulations
for IEEE 802.15.4), Bluetooth LE controller stack, IEEE 802.15.4 packet processor, transceiver drivers, up to 1
MB flash, up to 128 KB SRAM, and peripherals optimized to meet the requirements of target applications. The
K32W148 MCU supports multiprotocol use cases with Matter, Thread, Zigbee, and Bluetooth LE for IoT and
industrial applications.
The K32W148-EVK board provides RF circuitry (including antenna), 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 and OQPSK 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 K32W148 MCU, the K32W148-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 K32W148 MCU is referred to as "target
MCU" in this document.
This document provides details about the K32W148-EVK board interfaces, power supplies, clocks, push
buttons, jumpers, and LEDs.
Note: For information on the operating temperature range for the board, see Section 2.13.
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
Bluetooth LE 2360 MHz – 2483 MHz +10 dBmK32W148-EVK
IEEE 802.15.4 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 K32W148-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 K32W148-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
Table 1. Acronyms and abbreviations
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Term Description
ADC Analog-to-digital converter
DNP Do not populate
DoC Declaration of Conformity
GFSK Gaussian frequency shift keying
GND Ground
GPO General-purpose output
GPIO General-purpose input/output
HID Human interface device
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
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
OQPSK Offset quadrature phase-shift keying
OS Operating system
OTA Over-the-air
PCS Peripheral chip select
PER Packet error rate
PMIC Power management integrated circuit
ppm Parts per million
PWM Pulse width modulation
QSPI Quad serial peripheral interface
RED Radio Equipment Directive
RTC Real-time clock
SMA Subminiature version A
SPI Serial peripheral interface
SWD Serial wire debug
SWO Serial wire debug trace output
Table 1. Acronyms and abbreviations...continued
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Term Description
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 K32W148-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
K32W1480 Reference Manual Intended for system software and hardware
developers and application programmers who want to
develop products with K32W148 MCU
K32W1480RM.pdf
K32W14x Product Family Data Sheet Provides information about electrical characteristics,
hardware design considerations, and ordering
information
K32W1480.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
KW45 and K32W148 RF System
Evaluation Report for Bluetooth LE and
K32W148 for 802.15.4 Applications
only (AN13728)
Describes the K32W148-EVK board RF system
evaluation report for Bluetooth LE and IEEE 802.15.4
applications
AN13728.pdf
K32W148 Connectivity Test for
802.15.4 Application (AN13687)
Describes how to use the connectivity test tool to
perform the K32W148 802.15.4 RF performance
AN13687.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 K32W148-EVK board kit contains the following items:
•K32W148-EVK board hardware assembly
•A USB cable
•Spare jumpers
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1.5 Block diagram
Figure 1 shows the K32W148-EVK block diagram.
K32W148
PWM
X3
MCU-Link
JTAG
SWD
Reset
SW1 Red LED SWD
Arduino Uno R3
mikroBUS I/O headers
SMA
connector
Printed
inverted-F
antenna
NMI
SW2
WUU
SW3
NMI
SPI
Ranger 4
connectors
J5-J6
RF
I/O I/O
J3 J4 I/O headers
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
Accelerometer
Blue LED
GPIO
I2C
32.768 kHz I/O
I/O
I/O I/O
Lithium-ion battery
or external power
source header
VBAT
CR2032
5 V - 9 V
VEXT
PMIC
Power selector
FL_USB_5V0
3V3 LDO
SWD
Boot config
SW4
J12
J13
Wake-up
SW5
QSPI NOR
flash memory
SPI
Figure 1. K32W148-EVK block diagram
1.6 Board features
Table 3 describes the features of the K32W148-EVK board.
Board feature Target MCU feature used Description
MCU (target MCU) K32W148 MCU with Arm Cortex-M33 core running at a
frequency of up to 96 MHz
Note: For more details on the K32W148 MCU, see
K32W14x Product Family Data Sheet and K32W1480
Reference Manual.
Table 3. K32W148-EVK features
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Board feature Target MCU feature used Description
LPUART Two LPUART modules (LPUART0
and LPUART1)
•LPUART0:
–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
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
Power supply •The board can be powered up through:
–Coincell battery
–USB micro-B connector
–VBAT header (DNP)
Table 3. K32W148-EVK features...continued
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Board feature Target MCU feature used Description
•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. K32W148-EVK features...continued
1.7 Board pictures
Figure 2 shows the top-side view of the K32W148-EVK board, with connectors, push buttons, and LEDs
highlighted.
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J7 (SMA)
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. K32W148-EVK connectors, push buttons, and LEDs (top-side view)
Figure 3 shows the jumpers of the K32W148-EVK board.
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JP8
JP18
JP1 JP5 JP41
JP12
JP14
JP28
JP26
JP20
JP25
JP2
JP22 JP3
JP34
JP16
JP6
JP10
JP9
JP21 JP35 JP17
JP30
JP37
JP7
JP15
JP4
Figure 3. K32W148-EVK jumpers
Figure 4 shows the bottom-side view of the K32W148-EVK board, with battery holder BT2 highlighted.
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BT2
(battery holder)
Figure 4. K32W148-EVK bottom-side view
1.8 Connectors
Table 4 describes the K32W148-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). Holder for 3 V CR2032 lithium coincell battery
J8 (DNP) 1x2 pin header Lithium-ion/external battery connector
Section 2.1
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 2.6
J12
J13
1x8 position receptacles mikroBUS socket connectors Section 2.8
J1 1x8 position receptacle
J2 1x10 position receptacle
J3 1x8 position receptacle
Arduino socket connectors Section 2.9
Table 4. K32W148-EVK connectors
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Part identifier Connector type Description Reference
section
J4 1x6 position receptacle
J5 2x10 position receptacle
J6 2x8 position receptacle
Ranger 4 UWB socket connectors Section 2.10
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 For more
information on this
connector, see
K32W148-EVK
schematics
Table 4. K32W148-EVK connectors...continued
1.9 Jumpers
Table 5 describes the K32W148-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
JP42 1x2 pin header Target MCU debugging enable jumper:
Section 2.1
Table 5. K32W148-EVK jumpers
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Part identifier Jumper type Description Reference section
•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. K32W148-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. K32W148-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
JP21 1x2 pin header USB-to-UART bridge disable jumper:
•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
Section 2.3
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
Section 2.4
Table 5. K32W148-EVK jumpers...continued
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Part identifier Jumper type Description Reference section
•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).
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 2.5
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 2.7
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.
Note: By default, MCU-Link flash is
preprogrammed with a version of CMSIS-DAP
firmware.
Section 3.2
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
Section 3.5
Table 5. K32W148-EVK jumpers...continued
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NXP Semiconductors K32W148-EVKUM
K32W148-EVK Board User Manual
Part identifier Jumper type Description Reference section
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
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
K32W148-EVK
schematics
Table 5. K32W148-EVK jumpers...continued
1.10 Push buttons
Table 6 describes the K32W148-EVK push buttons. The push buttons are shown in Figure 2.
Part identifier Switch name Description
SW1 Reset button (RST_SW) Pressing SW1 resets the target MCU (K32W148) 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 Non-maskable interrupt
(NMI) button (PTD1_NMI PB)
SW3 Wake-up unit (WUU) button
(PTC6_WUU0 PB)
Interrupt push buttons
SW4 Target MCU boot
configuration button (BOOT
CONFIG)
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, 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 K32W1480 Reference Manual for
more information on ISP mode.
By default, SW4 is disabled. It can be enabled by shorting
jumper JP25.
SW5 Wake-up button (SW_
WAKE_UP)
Wakes up the target MCU (K32W148) from Deep Power-
Down mode
Table 6. K32W148-EVK push buttons
Figure 5 shows the circuit diagrams of the K32W148-EVK push buttons.
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NXP Semiconductors K32W148-EVKUM
K32W148-EVK Board User Manual
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
AC
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
VBOARD
GND
R176
10K
SW5
KSC223JLFG
SW_WAKE_UP
1
3
4
2
SWITCH_WAKEUP_B
Reset button Interrupt buttons
Boot configuration button Wake-up button
VCC_IF_LINK
GND
PTA4/SWO/BOOT_CFG
JP25
HDR 1X2
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 K32W148-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.
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. K32W148-EVK LEDs
Figure 6 shows the circuit diagrams of the LEDs described in Table 7.
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NXP Semiconductors K32W148-EVKUM
K32W148-EVK Board User Manual
TPM0_CH2
LPSPI 1_PCS0/ TPM1_CH0
MCU RST
TPM0_CH0 RF_GPO_2/ TPM0_CH1
VBOARD
P_LED
P_LED
P_LED
P_LED
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
VBOARD
PTB0
PTA19
PTA20
Power-on indicator LED
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_SW
1
3
4
2
R31 0
JP18
HDR 1X2
LED_RST
1
2
R38
10K
R33 0
R26
270
R30
270
R34 0
R32
10K
LED2
BLUE
A
C
R35 0
LED3
LED_GREEN
AC
LEDRGB_RED
LEDRGB_GREEN
LEDRGB_BLUE
RGB_G
PO_LED
RGB_R RGB_B
LED_G
LED_GP
LED_R
LED_B
LED_RST
RGB LED General-purpose LED
Reset LED
Figure 6. LED circuit diagrams
2 K32W148-EVK functional description
This section describes the features and functions of the K32W148-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 K32W148 MCU, see K32W14x Product Family Data Sheet and K32W1480
Reference Manual.
2.1 Power supplies
The K32W148-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. 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).
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,
mikroBUS socket, Arduino socket, Ranger 4 UWB socket, push buttons, and LEDs.
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NXP Semiconductors K32W148-EVKUM
K32W148-EVK Board User Manual
Many power supplies in the K32W148-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 K32W148-EVK power supplies.
VBAT 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
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
4VOUT
5
C102
0.022UF
C105
0.022UF
VOUT_MLINK
Figure 7. Power supply circuit diagram 1
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NXP Semiconductors K32W148-EVKUM
K32W148-EVK Board User Manual
MCU core supply
I
OD
I
i
Programmable Output Voltage Regulation:
===============================
1. SW 1: Core Buck, 0.5V~1.5V Output, 25m V/s tep, up to 250mA
2. SW 2: Sys tem Buck, 1.5V~2.1V/2.7V~3.3V Output, 25m V/s tep, up to 500mA
3. LDO1: Always-ON LDO, 1.70V~1.90V Output, 25m V/s tep, up to 1mA
4. LDO2: S yste m LDO, 1.5V~2.1V/2.7V~3.3V Output, 25m V/s tep, up to 250m A
1. 1V de f aul t
O
Default
SW1 = 1.1V for core supply (P1V1_EXT)
SW2 = 1.8V for P1V8 board (P1V8_EXT)
LDO1 = NC
LDO2 = 3.3V for P3V3 board (P3V3_SEL)
PMIC, read 0xc3, write 0xc2
USB HOST
POWER
IOREF
MCU RST
FL_US B_5V0
VBOARD VBOARD
P5V
GND
GND
VIN
RST_TGTMCU_B3,5,9
J3
CON_1X8
PWR
1 2 3 4 5 6 7 8
SH47
0
C77
10uF
SH25 0D10
PMEG4010CPA
2
1
3
RST
3. 3V de f aul t
1. 8V de f aul t
I 2C1_SCL
I 2C1_SDA
INT_B_PMIC
NMI_b/ADC0_B5
ADC0_A6/PMIC_SYSRST
PMIC_SW1
PMIC_SW2
PMIC_LDO2
PMIC_SW2 P1V8_EXT
PMIC_SW1 P1V1_EXT
GND
GND
GND GND GND GND
GND
GND
GND
GND
GND
GND
P5V
VBOARD
PTC0
PTC1
PTD3
PTD1
PTD2
TP4
R8 2.2K
DNP
R3 0
C28
4.7UF
10V
TP3
R9 2.2K
DNP
C29
2.2UF
10V
JP2
HDR 1X2
1 2
C16
2.2uF
16V
R10 100K
DNP
L5 2.2uH
1 2
TP5
R15 0
DNP
R11 100K
DNP
R14 0
L4 2.2uH
1 2
R5 0
DNP
C22
10uF
10V
R12 100K
C23
22uF
10V
R13 100K
R169 0
DNP
JP1
HDR 1X2
1
2
C24
0.1UF
16V
R167 0
DNP
R168 0
DNP
C19
10uF
10V
JP3
HDR 1X2
1 2
TP6
C25
1.0UF
10V
R4 0
C20
10uF
10V
U2
PCA9420UK
VIN
C1
PSYS1
A2
VBAT_BKUP
D2
SCL
D5
SDA
E5
MODESEL0
E4
MODESEL1
E3
SYSRST
D3
ON
C4
INT
D4
VBAT
A1
TS
C2
AGND1
B3
PGND1 A4
LDO1_OUT
E1
LDO2_OUT
D1
LX2
B5
SW2_OUT
B4
LX1
A3
SW1_OUT
B2
PGND2 A5
PSYS2
C5
AGND2
C3
AGND3
E2
ASYS
B1
R6
100K
C17
0.47uF
16V
C26
1.0UF
10V
C21
0.1UF
16V
R7
100K
C27
2.2UF
10V
PMIC_LDO1
PMIC_MODESEL1
PMIC_MODESEL0
INT_B
ON_B
PMIC_VBAT_BCKUP
PMIC_MODESEL1
PMIC_MODESEL0
PMIC_SCL
PMIC_VBAT
PMIC_SDA
PMIC_SYSRST_B
PMIC_PSYS
LX1
LX2
PMIC_LDO1
PMIC_VIN
PMIC_SCL
PMIC_SDA
INT_B
ON_B
LiIon / Ext Battery
P3V3_LDO
GND
GND
GND
VIN
P5V
+
C33
10UF
U3 NCP1117ST33T3G
GND
1
VOUT
2
VIN
3
TAB 4
D22
PMEG4010CPA
2
1
3
D6
RB160M-30
A C
C32
10uF
16V
TP7
V_LDO_OUT
V_LDO_IN
PMIC_SYSRST_B
Figure 8. Power supply circuit diagram 2
VDD_SWI TCH
(VDD_IO _D)
VDD_SYS = 1 .71 V -2.7 5V
If the bo ard is in its de fault powe r con figura tio n, o nly JP 10
is ne e ded to s witch between DCDC and Bypa s s modes
i
VOUT_SWI TCH MCU_VDDs
(t o DCDC _LX in d uc t o r)
6.3V
VDD_SWITCH
VOUT_SWITCH
1V8_DCDC
VDD_DCDC
VDD_IO_ABC
VDD_ANA
VDD_PA_2G4
VDD_LDO_CORE
VDD_RF
VOUT_SYS/VDD_SYS
VDD_CORE
VBAT
VBOARD PMIC_LDO2
P3V3_LDO
P3V3
MCU_VDD_REG
VBOARD
P3V3
GND GND
VDD_REG
MCU_VDD_REG
GND
GND
MCU_VDD_REG
VDD_DCDC
P1V8_EXT
MCU_VDD_REG
MCU_VDD_REG
P1V8_EXT
GND
GND
GND
P1V1_EXT
P1V8_EXT
GND
GND
GND
VDD_DCDC
GND GND
GND GND
JP37
HDR TH 1X3
1 2
3
C41
0.1UF
C44
4.7uF
0603
JP14
HDR 1X2 VDD_RF
1 2
R177
10
JP9
HDR TH 1X3
VDD_ANA
1
2
3
C42
4.7uF
0603
C45
10uF
DNP
JP5
HDR 2X3
PWR SELECTION
1 2
3 4
65
R179
3.3
JP41
HDR 1X2
VBOARD
1
2
JP10
HDR 2X3
VDD_SEC
1 2 3 4
65
JP7
HDR TH 1X3
VDD_DCDC
1
2
3
L13
1800 OHM
1
2
R178
3.3
C46
4.7uF
0603
C48
12pF
JP8
HDR TH 1X3
VDD_IO_ABC
1
2
3
C47
1.5uF
0603 (1608 Metric)
6.3V
C49
22uF
6.3V
JP11
HDR 1X2
VDD_PA_2P4_EXT
1
2
JP13
HDR 1X2
DNP
VDD_SYS
1 2
C38
10uF
JP6
HDR TH 1X3
1
2 3
JP40
HDR 1X2
DNP
LDO_SYS_BYPASS
1 2
JP4
HDR TH 1X3
VDD_SWITCH
1
2 3
C36
0.1UF
C34
0.1UF
C39
0.1UF
JP15
HDR 1X2
VDD_CORE_EXT
1
2
JP12
HDR 1X2
1
2
C37
0.1UF
DNP
C40
4.7uF
0603
C35
4.7uF
DNP
C43
0.1UF
VDD_SWITCH
V_SEC
DNP
VDD_REG
Figure 9. Power supply circuit diagram 3
Table 8 describes the K32W148-EVK power supplies.
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