NXP Semiconductors LPC55S16-EVK User manual

UM11158
LPCXpresso55S16 Development Boards
Rev. 1.0 — 6 March 2020 User manual
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Keywords LPC55S16, LPC55S1x, LPCXpresso55S16, LPC55S16-EVK
Abstract LPCXpresso55S16 development board user manual

UM11158 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2020. All rights reserved.
User manual Rev. 1.0 — 6 March 2020 2 of 21
Contact information
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [email protected]
NXP Semiconductors UM11158
LPCXpresso55S16 Development Boards
Revision history
Rev Date Description
1.0 20200306 Initial internal release

UM11158 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2020. All rights reserved.
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NXP Semiconductors UM11158
LPCXpresso55S16 Development Boards
1. Introduction
The LPCXpresso™ family of boards provides a powerful and flexible development system
for NXP's LPC Cortex®-M family of MCUs. They can be used with a wide range of
development tools, including NXP's MCUXpresso IDE, Keil uVISION and IAR Embedded
Workbench. The LPCXpresso55S16 board (order code LPC55S16-EVK) is the evaluation
and development platform for the LPC55S1x families of MCUs.
See https://www.nxp.com/demoboard/LPC55S16-EVK for more information on these
boards, including tutorial videos, development software and board hardware design files.
The abbreviation LPC55S1x is used to collectively refer to the LPC55S16 family device on
the board.
The LPCXpresso55S16 board includes the following features:
•LPC55S16 Cortex-M33 processor
•Onboard, high-speed USB, Link2 debug probe with CMSIS-DAP and SEGGER J-Link
protocol options
•UART and SPI port bridging from LPC55Sxx target to USB via the onboard debug
probe
Fig 1. LPCXpresso55S16

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•Optional external debug probes with trace option (10 or 20 pin Cortex-M connectors)
•External crystal oscillators
•RGB user LED
•Reset, ISP, User/Wakeup and user buttons
•Multiple Expansion options, including Arduino UNO, Mikroe Click and PMod
•CAN-FD controller and onboard CAN transceiver
•NXP FXOS8700 accelerometer
•Stereo audio codec with line in/out
•High / full speed USB port with micro A/B connector for the host or device functionality

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2. Board layout and Settings
Figure 2 shows the layout of the board (top side), indicating the default location of the
jumpers, while Figure 3 shows locations of the connectors and headers. Table 1 provides
a description of connectors, jumpers, LEDs and buttons.
Fig 2. Default jumper positions
JP2: USB Host power enable
(1-2 closed, USB0)
JP15, J P16, JP17: Link2 SWD
(closed)
JS2: USB host selection
(1-2 closed USB0)
JS4: PMO D I2C enable
(closed)
JS5: PMO D I2C enable
(closed)
JP12: UART (closed)
JP6: DFU mode on-board
debugger (open)
JP1: Power Selection
(1-2 closed, 3.3V)
JP9: PMO D S PI/Flexcomm0
UART (open)
JP3: External UART
(1 RXD 2 TXD, 3 G ND)
JP18, J P19: Codec (closed)
JP8: Buer power (1-2 closed)
JP7: On-board debug
target (open)
JP13: Link2 SWD (closed)
JP14: Link2 SWD (closed)
JP20: VDD power (closed)
JS3: Force target M C U
into ISP mode (open)
JP22: VBAT power (closed)
J11: Analog comparator
Input/Output (open)
JP21: VDDA power (closed)
Fig. Default jumper locations
Part Number: LPC55S16-EVK
Agile Number: 926-78992
www nxp com

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User manual Rev. 1.0 — 6 March 2020 6 of 21
NXP Semiconductors UM11158
LPCXpresso55S16 Development Boards
Fig 3. Board connectors and headers
J5
D4
J6
D5
SW4
SW2
SW3
SW1
J8, J7
J10, J13
J18
D8
J4
J3
J2
J1
J17
U16
U27
J19
J9, J12
Table 1. Indicators, buttons, connectors and LEDs
Circuit
reference
Description Default Reference
D5 Target power indicator LED n/a n/a
D8 Link2 boot LED n/a Section 4.1
D4 RGB User LED n/a Section 7.5
J5 Audio codec line input jack n/a Section 7.1
J6 Audio codec line output jack n/a Section 7.1
JP8 Buffer Power Selection
For On-board Target place in position 1-2 (default)
For Off-board Target place in position 2-3
1-2 Section 3.1,
Section 4.4
JP6 Link2 (LPC43xx) force DFU boot.
Leave this jumper open (default) for Link2 to follow the normal boot
sequence. The Link2 will boot from internal flash if image is found
there. With the internal flash erased the Link2 normal boot sequence
will fall through to DFU boot.
Install this jumper to force the Link2 to DFU boot mode. Use this setting
to reprogram the Link2 internal flash with a new image (using the
LPCScrypt utility) or to use the MCUXpresso IDE with CMSIS-DAP
protocol.
Note that the Link2 flash is pre-programmed with a version of
CMSIS-DAP firmware by default.
Open Section 3.,
Section 4.

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JP7 Target processor selection for the on-board Debug Probe.
Jumper open (default) the LPC55Sxx Target SWD interface enabled.
Normal operating mode where the Target SWD is connected to either
the on-board Link2 Debug Probe or an external Debug Probe.
Jumper shunted, the LPC55Sxx Target SWD interface is disabled. Use
this setting only when the on-board Link2 Debug Probe is used to
debug an off-board target MCU.
Open Section 4.
JP2 USB host Vbus selection
Note that only one of USB0 or USB1 can be configured as a USB host
port at any given time (this is a board restriction, not a limitation of the
LPC55Sxx.)
Install jumper in position 1-2 for USB0 (Full Speed) to provide Vbus (i.e.
enable USB host capability) (Default)
Install jumper in position 2-3 for USB1 (High Speed) to provide Vbus
(i.e. enable USB host capability)
1-2 (USB0) Section 6.1
JS2 USB host power control selection
This jumper selects routing of USB port power and overcurrent detect
from either the USB0 or USB1 ports of the LPC55Sxx. Note that only
one of USB0 or USB1 can be configured as a USB host port at any
given time (this is a board restriction, not a limitation of the LPC55Sxx.)
Leave open when using USB1 (High Speed) as a USB host (Default)
Install jumper for USB0 (Full Speed) to provide Vbus (i.e. enable USB
host capability)
Installed
(USB1)
Section 6.1
JP9 When open (default), the "Bridge" UART and SPI connections from the
Link2 probe are driven to the LPC55Sxx target.
Install JP9 when using the SPI interface at connector J18 and/or FC0
UART at JP3. Note that this disables the Link2 SPI and UART (bridge)
connections.
Open Section 4.
JP1 Target VDD power selection. An external supply voltage to the
LPC55Sxx can also be applied through pin 2 of this header.
1-2 (3.3V)
2-3 (1.8V)
Section 5.
J2 External +5V power
Micro USB connection for power to the LPC55Sxx target and peripheral
circuitry (excluding Link2 Debug Probe). Must be installed for the USB
host to work.
n/a Section 5.
Section 6.1
J1 Link2 Debug Probe connector
Micro USB type B connection for the on-board Link2 Debug Probe.
Note: do not use this connection when using an external Debug Probe.
n/a Section 4.
J17 10 pin external debug probe / off board target connector
This standard Cortex-M debug connector is used either to (1) connect
and off-board debug probe or (2) to connect an external debug target.
n/a Section 3.1.3
JP3 Serial port header
0.1” header providing convenient access to Flexcom 0 USART (the
USART used for ISP boot). When using this port install jumper JP9 to
disable the Link2 connection to this port.
n/a Section 6.2
J4 LPC55Sxx USB1 (high speed) micro AB port connector n/a LPC55Sxx
USB Ports
Table 1. Indicators, buttons, connectors and LEDs
Circuit
reference
Description Default Reference

UM11158 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2020. All rights reserved.
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NXP Semiconductors UM11158
LPCXpresso55S16 Development Boards
J3 LPC55Sxx USB0 (full speed) micro AB port connector n/a LPC55Sxx
USB Ports
JP20 Power to MCU VDD, once removed, it can be used to measure VDD
current.
Installed Measuring
LPC55Sxx
device supply
current
JP21 Power to MCU VDDA, once removed, it can be used to measure VDDA
current.
Installed Measuring
LPC55Sxx
device supply
current
JP22 Power to MCU VBAT, once removed, it can be used to measure VBAT
current.
Installed Measuring
LPC55Sxx
device supply
current
JP5 ADC reference connector
This header provides an access point to inject positive and negative
voltage references for the LPC55Sxx ADC.
Open
J9,J10,J12,J
13
LPCXpresso expansion connectors, including Arduino R3 compatible
site. Provides connectivity to SPI (high speed SPI), USART (Flexcom
2), I2C (Flexcom 4 and Flexcom 1), I2S (Flexcom 7), ADC0, GPIO and
PLU pins.
n/a Section 8.
J18 PMod expansion connector / Host interface connector
This connector provides access to the SPI (Flexcom 3) and I2C
(Flexcom 1) ports that support LPC55Sxx ISP mode, along with 2 GPIO
lines. When using the SPI port at this connector ensure jumper P1 is
installed to disable the connection to the Link2 debug probe.
n/a Expansion
connectors
J19 CAN-FD controller
DB9 Male connector to CAN-FD network.
n/a Section 7.2
J7,J8 Mikroe Click site
Provides connectivity to standard Mikroe Click connectors. Shares SPI,
ADC, I2C and USART connections with the J9, J10, J12, J13
expansion connectors.
n/a Section 8.
J22 - J29 Miscellaneous GPIO pins for debugging purposes. n/a
SW4 ISP/User button
When pressed, this button connect sport pin P0_5 to ground. Hold this
button down while pressing and releasing Reset (SW2) to force the
LPC55Sxx into ISP mode. Port P0_5 may also be reconfigured as a
GPIO in user application code to enable this button to be used for other,
user-defined purposes.
n/a Section 7.6.1
Table 1. Indicators, buttons, connectors and LEDs
Circuit
reference
Description Default Reference

UM11158 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2020. All rights reserved.
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NXP Semiconductors UM11158
LPCXpresso55S16 Development Boards
3. Getting started
This section describes how to first power up the board and then how to start a first debug
session using the MCUXpresso SDK. The board is pre-programmed with a simple
program indicating that the target MCU is running. Connect a micro USB cable from
connector J2 to a host computer or power supply to power-up the board and run this
program.
The following debug probes can be used with those development and the board (check
compatibility between debug probe and IDE used, including support for Arm Cortex M33
cores):
•On-board debug probe (LPC4322 “Link2”) from connector J1
•LPC-Link2 (OM13054) debug probe from NXP or Embedded Artists
•P&E Micro probes
•Keil ULINK2 probes
•IAR I-Jet probes
Other debug probes may also be supported by IAR and Keil tools and by other
IDEs/debug tools; refer the websites of these companies for further information.
3.1 Starting a debug session using the on-board (Link2) Debug Probe
By default, the Board is configured to use the on-board Debug Probe (Link2) to debug the
on-board target (LPC55Sxx), using the CMSIS-DAP debug protocol pre-programmed into
the Link2 Flash memory. The MCUXpresso IDE or other development tools that support
the CMSIS-DAP protocol can be used in the default configuration. Check with your
toolchain vendor for availability of specific device support packs for the LPC55Sxx series
devices.
Note that when using the MCUXpresso IDE, the on-board Link2 can also be booted in
DFU mode by installing a jumper on JP6; if this is done then the IDE will download
CMSIS-DAP to the probe as needed. Using DFU boot mode will ensure that the most
up-to-date / compatible firmware image is used with the MCUXpresso IDE.
SW1 Wake/User button
This button, when pressed, pulls P1_18 to ground. A 330K ohm pull up
to VDD is connected to P1_18.
n/a Section 7.6.2
SW3 User button
This button, when pressed, pulls P1_9 to ground. A 100K ohm pull up
to VDD is connected to P1_9, and this port is also connected to pin 2 of
expansion connector J12.
n/a Section 7.6.2
SW2 Reset button
When pressed, reset is applied to the LPC55Sxx, expansion connector
(Arduino reset) J10, the Mikroe Click site reset, and U18 (debug
connector J17 reset when debugging an off-board target).
n/a Section 7.6.3
Table 1. Indicators, buttons, connectors and LEDs
Circuit
reference
Description Default Reference

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NOTE: if the Debug Probe is set up to boot in DFU mode, the USB bridge functions
(virtual COM port) and Debug Probe features will not be available if the board is not first
initialized by the MCUXpresso IDE.
3.1.1 Installation steps for use with MCUXpresso IDE
Download and install the MCUXpresso IDE.
Configure and download an SDK package (with the MCUXpresso IDE tool chain option
selected) from the MCUXpresso SDK Builder utility (http://mcuxpresso.nxp.com).
Ensure jumper JP8 is fitted in position 1 - 2 (local target powered), and JP7 is not installed
(target SWD enabled). These are the default positions set during board manufacture.
Connect the board to the USB port of your host computer, connecting a micro USB cable
to connector J1. The board will boot and run the pre-installed demo.
The board is now ready to be used with the MCUXpresso SDK examples for the
LPCXpresso55S16.
When the board is used for the first time, it is recommended to force the LPC55Sxx target
into a known state by performing an ISP boot before attempting to run your first example
code. This can be achieved by pressing and holding down the ISP button while pressing
and releasing the reset button or installing the LPC55Sxx ISP jumper.
3.1.2 Installation steps to use Keil and IAR tools with on-board debug probe
Download and install LPCScrypt (https://www.nxp.com/lpcscrypt). This will install required
drivers for the board. Note that the Link2 (LPC4322 device) is pre-programmed with
CMSIS-DAP firmware. If you have previously installed LPCScrypt please ensure version
2.1 or later is installed.
Ensure jumper JP8 is fitted in position 1-2 (local target powered), and J7 is not installed
(target SWD enabled). These are the default positions set during board manufacture.
The Link2 Debug Probe on the board will have been programmed with CMSIS-DSP
firmware during manufacture, but can also be updated with J-link OB for LPC-Link2. To
start the board with this firmware running, ensure JP6 is not installed as power is
connected, so the Link2 Debug Probe boots from internal flash. If you wish to
update/change the Link2 firmware please follow the steps described in Section 4.2.
Connect the Board to the USB port of your host computer, connecting a micro USB cable
to connector J1 ("Debug-Link"). The board will boot and run the pre-installed demo. Allow
about 30 seconds for the Link2 devices to enumerate for the first time. It is not necessary
to check the Hardware Manager on your host computer, however if this is done there will
be five devices (if using CMSIS-DAP protocol); four under Human Interface Devices
(CMSIS-DAP, LPC-SIO, two HID Compliant Devices, and a USB Input Device) and one
under Ports (LPC-LinkII Ucom.)
Your board is now ready to use with your 3rd party tool. Follow the instructions for those
tools for using a CMSIS-DAP probe. MCUXpresso IDE can also be used with the board
after setting up the board this way.