NXP Semiconductors LPC55 Series User Manual Download Page 16 | Manualshive

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NXP Semiconductors LPC55 Series User Manual Download Page 16

UM11158

All information provided in this document is subject to legal disclaimers.

© NXP B.V. 2019. All rights reserved.

User manual

Rev. 1.2 — 25 April 2019

16 of 24

NXP Semiconductors

UM11158

LPCXpresso55S69 Development Board

7.2 Micro SD card slot

The micro SD card (P21) included in the LPCXpresso55S69 board provides a 4-bit SDIO
interface to support memory cards, plug-in WiFi modules, etc. Power enable to the socket
is provided via transistor enabled by P1_0.

Software drivers and related examples for the SD card are provided as part of the
MCUXpresso SDK.

7.3 Accelerometer

The board includes an NXP MMA8652FCR1 accelerometer, interfaced to Flexcom 4
(ports P1_21 and P1_20) with its interrupt output connected to P1_19 (this signal is also
shared with the Expansion connector P18 via a 100 ohm resistor (R5).) The
accelerometer has an I2C address of 0b0011101.

Note that the accelerometer can only be used when the board is configured for 3.3V
operation. Resistor R20 may be removed to disconnect the MMA8652 from the supply
rail, and P25 may be installed to provide a convenient way to connect/disconnect it to/from
power.

Resistors R3 and R4 are zero ohm links, provided to enable the MMA8652 to be
disconnected from P1_20 and P1_21 to avoid leakage effects when the board is
configured for 1.8V operation.

I2C software drivers are provided as part of the MCUXpresso SDK, and example code is
provided to illustrate how to read values from the accelerometer.

7.4 RGB User LED

An User controlled RGB LED is provided on the Board, located on the right hand edge.
The LEDs in this device are controlled by LPC55S69 ports P1_4 (Blue), P1_6 (Red), P1_7
(Green) with the LEDs being illuminated when the respective LED is pulled low. Note that
these port lines are also connected to expansion connector J18.

7.5 Buttons

Four buttons are provided on the LPCXpresso55S69, as described in this section.

Table 3.

Micro SD card connections

SDIO interface signals

Port

Notes

SDIO Clock

P0_7

IOCON function 2

SDIO Command

P0_8

IOCON function 2

D0

P0_9

IOCON function 2

D1

P0_17

IOCON function 2

D2

P0_24

IOCON function 2

D3

P0_25

IOCON function 2

Card detect

P0_21

IOCON function 2

Power enable

P1_0

GPIO. Active low.

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Summary of Contents for LPC55 Series

Page 1: ...S9UM11158 UM11158 LPCXpresso55S69 Development Board Rev 1 2 25 April 2019 User manual Document information Info Content Keywords LPC55S69 LPC55xx LPCXpresso55S69 LPC55S69 EVK Abstract LPCXpresso55S69...

Page 2: ...istory Rev Date Description 0 1 20180816 Initial internal release 0 2 20181015 Added official document number Section 4 updated corrected 1 0 20190308 Added references in jumper connector Indicators b...

Page 3: ...valuation and development platform for the LPC556x family of MCUs See http www nxp com demoboard LPC55S69 EVK for more information on this board including tutorial videos development software and boar...

Page 4: ...miconductors UM11158 LPCXpresso55S69 Development Board RGB user LED Reset ISP User Wakeup and user buttons Multiple Expansion options including Arduino UNO Mikroe Click and PMod Micro SD card slot NXP...

Page 5: ...NXP Semiconductors UM11158 LPCXpresso55S69 Development Board 2 Board layout and Settings Figure 2 shows the layout of the board top side indicating location of the connectors and buttons while Figure...

Page 6: ...ction 7 1 J3 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 J4 Link2 LPC43xx force DFU boot Leave this...

Page 7: ...us i e enable USB host capability Installed USB1 Section 6 1 J10 ISP boot jumper for LPC55S69 Installing this jumper ties port P0_5 to ground forcing the LPC55S69 into ISP mode whenever it is reset Op...

Page 8: ...voltage references for the LPC55S69 ADC An external positive reference may be connected to pin 1 Note that a solder jumper zero ohm resistor must be in position 2 3 on J8 An external negative referenc...

Page 9: ...ssion using the on board Link2 Debug Probe By default the LPCXpresso55S69 is configured to use the on board Debug Probe Link2 to debug the on board target LPC55S69 using the CMSIS DAP debug protocol p...

Page 10: ...nd 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 P6...

Page 11: ...ace 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 t...

Page 12: ...host computer for example the VCOM port can be used if the board is running an application when no debugger is running In order to correctly install and use the Link2 device on the LPCXpresso55S69 re...

Page 13: ...with a unique identifier On Windows to determine the COM port open the Windows operating system Device Manager This can be achieved by going to the Windows operating system Start menu and typing Devic...

Page 14: ...connectors will not supply power to the board and another source must be provided The LPC55S69 device requires a minimum supply voltage of 1 85V so jumper P4 must be set in the 3 3V position or an ex...

Page 15: ...S69 being powered through this TXD RXD pins 7 On board peripherals This section describes how the on board peripheral devices of the Board are connected to the LPC55S69 and relevant configuration opti...

Page 16: ...he MMA8652 from the supply rail and P25 may be installed to provide a convenient way to connect disconnect it to from power Resistors R3 and R4 are zero ohm links provided to enable the MMA8652 to be...

Page 17: ...5 2 User S3 and Wake S2 buttons The User S3 and Wake S2 buttons are intended for user application use These buttons pull ports P1_9 User and P1_18 Wake low when the button is pressed 100kohm resistor...

Page 18: ...gn P17 of the Arduino shield SCL with pin 1 of connector P17 on the LPCXpresso55S69 board Table 4 Micro SD card connections SDIO interface signals Port Notes SDIO Clock P0_7 IOCON function 2 SDIO Comm...

Page 19: ...ment is subject to legal disclaimers NXP B V 2019 All rights reserved User manual Rev 1 2 25 April 2019 19 of 24 NXP Semiconductors UM11158 LPCXpresso55S69 Development Board Fig 4 P16 and P19 connecto...

Page 20: ...es of the board PIO1_16 is used instead for the power enable function configured as a GPIO 9 Board Power This section describes miscellaneous board features that we not covered elsewhere in this manua...

Page 21: ...rranted to be suitable for use in life support life critical or safety critical systems or equipment nor in applications where failure or malfunction of an NXP Semiconductors product can reasonably be...

Page 22: ...k2 Debug probe 12 4 1 Link2 boot LED 13 4 2 Programming the Link2 firmware 13 4 3 VCOM port 13 4 4 Configuring the LPCXpresso55S69 to debug an off board target 13 5 Board Power 14 5 1 Measuring LPC55S...

Page 23: ...ll information provided in this document is subject to legal disclaimers NXP B V 2019 All rights reserved User manual Rev 1 2 25 April 2019 23 of 24 NXP Semiconductors UM11158 LPCXpresso55S69 Developm...

Page 24: ...ll information provided in this document is subject to legal disclaimers NXP B V 2019 All rights reserved User manual Rev 1 2 25 April 2019 24 of 24 NXP Semiconductors UM11158 LPCXpresso55S69 Developm...

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