NXP LPC55S6x User guide

Brand: NXP

Model: LPC55S6x

Type: User guide

The NXP LPC55S6x is a versatile and powerful microcontroller that combines an Arm Cortex-M33 core with advanced peripherals and features, making it ideal for a wide range of applications including industrial, automotive, and consumer devices. With its high-speed processing capabilities, low power consumption, and extensive connectivity options, the LPC55S6x offers an exceptional solution for complex embedded designs. Whether you're building IoT devices, motor control systems, or human-machine interfaces, the LPC55S6x provides the performance and flexibility to bring your ideas to life.

LPC55S69JEV98 Fingerprint Demo Kit with 2-

Layer PCB

NXP Semiconductors Document identifier: UM11338

User's Guide Rev. 0, June 2020

Contents

Chapter 1 Purpose.................................................................................................3

Chapter 2 LPC55S69JEV98 Fingerprint demo kit................................................. 4

Chapter 3 How to update MCU firmware............................................................... 9

Chapter 4 Running demos................................................................................... 11

Chapter 5 Conclusion.......................................................................................... 13

Chapter 6 References..........................................................................................14

Chapter 7 Appendix............................................................................................. 15

Chapter 8 Revision history...................................................................................16

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Chapter 1

Purpose

The LPC55S69JEV98 Fingerprint demo kit is based on LPC55S69JEV98(VFBGA98). The purpose of this kit is to prove that

VFBGA98 can use 2-layer PCB layout(low-cost PCB) in some applications. Here fingerprint is used as user application. This

demo kit shown as Figure 1. This kit integrates LPC55S69JEV98 with a fingerprint sensor, a 160x128 color OLED panel,

1xTemperature/Humidity sensor, 2x buttons, 2x LEDs, and 1xUSB high-speed port. This user guide describes how to use

LPC55S69JEV98 fingerprint demo kit.

Figure 1. LPC55S69JEV98 Fingerprint demo kit

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Chapter 2

LPC55S69JEV98 Fingerprint demo kit

2.1 Overview

This demo kit has two PCB board, one is LPCup-LPC55S69JEV98 core board, the other is Fingerprint application board shown

as Figure 2. LPCup core board is black and application board is blue.

Figure 2. LPCup core board & Fingerprint application board.

2.2 LPCup-LPC55S69JEV98 core board

The core board is following LPCup expander board rules, the LPCup expander board is support 2x LEDs, 2x Buttons, the LPCup

expander connector is compatible with Arduino connectors. As Figure 3 show, the core board is a 1600 mils x 1600 mil PCB

board, it is a minimum MCU system.

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Figure 3. LPCup expander board instruction

For LPC55S69JEV98 LPCup core board, we added a high-speed USB port and extended JTAG & UART connectors for debug

and print log information.

Figure 4. LPCup-LPC55S69JEV98 core board

LPCup-LPC55S69JEV98 core board has 5x Connectors, SWD is used for debug, LOG is used for uart print, LPCup is LPCup

functions connector which compatible with Arduino, CON4 is used select the USB mode as device or host, CON6 used for

measurement MCU current. Each connector pins function detail explained in Table 1 to Table 4

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Table 1. CON4/6 connector usage details

Connector # Function Descriptions

CON4 USB mode select 1-2 Open: USB is device

1-2 Shunt: USB is host

Default is OPEN.

CON6 Measurement MCU current 1-2 Shunt: power up MCU normally

1-2 Open: connect a current meter with it for measurement

MCU current

Default is 1-2 Shunt.

Table 2. SWD connector pin details

SWD connector 5 pins 2.54 mm

Pin # Function Descriptions

1 3.3 V 3.3 V power supply, this pad is square

2 GND Ground

3 SWDCLK SWD Clock

4 SWDIO SWD IO

5 RESET Reset MCU

Table 3. LOG connector pin details

LOG connector 5 pins 2.54 mm

Pin # Function Descriptions

1 3.3 V 3.3 V power supply, this pad is square

2 UART0_RXD UART Receive Pin, with ISP.

3 UART0_TXD UART Transmit Pin, with ISP.

4 GND Ground

5 5.0 V External 5.0 V power supply,

Table 4. LPCup connector pin details

LPCup

connector

2x15 pins 2.54 mm

Pin1 is square pad

Table continues on the next page...

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Table 4. LPCup connector pin details (continued)

Pin # Function Pin# Function

1 Flexcomm5

RXD

16 PIO0_25

2 Flexcomm5

TXD

17 PIO0_28

3 PIO1_9

18 PIO1_8

4 PIO0_21

19 PIO1_19

5 PIO1_20

20 Flexcomm1

I2C SDA

6 PIO1_21

21 Flexcomm1

I2C_SCL

7 HighSpeed SPI

22 IOREF

8 HighSpeed SPI

MOSI

23 RESET

9 HighSpeed SPI

MISO

24 VCC_IN

5.0 V/External Power

10 HighSpeed SPI

SCK

25 VCC_REF

3.3 V

11 GND 26 GND

12 VCC_OUT

3.3 V

27 VCC_OUT

3.3 V

13 ADC0_3 28 ADC0_0

14 ADC0_8 29 ADC0_1

15 ADC0_11 30 ADC0_2

2.3 Fingerprint application board

Application board is user-defined, which include 1x OLED panel (UG-6028GDEB1) and 1x Fingerprint sensor (BTL192), shown

as Figure 5

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Figure 5. Fingerprint application board.

LPC55S69 is ultra-low active current MCU(<32uA/MHz), User can connect an external battery power pack (3x AAA) on external

5.0 V power pins, shown as Figure 6.

Figure 6. Fingerprint application board with external battery power

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Chapter 3

How to update MCU firmware

There are two ways to update the mcu firmware:

• SWD port

• USB HID ISP

Update firmware through SWD port need an external debugger (JLINK V10, ULINK2, LPC-Link2, etc.), connect with core board’s

SWD connect, user needs to take care of the wire sequence.

Update firmware through USB needs a tool named as blhost. The blhost usually include in SDK zip pack, path is “middleware

\mcu-boot\bin\Tools\blhost\win”.

To update firmware through USB HID ISP, follow the below steps:

1. Connect Core board with PC through USB micro cable.

Remark: Once connected, the LED1(red led) should be turn on.

2. Hold pressing S3 (ISP button), press S1(Reset button) and release it, then release the ISP button, then the USB HID

should be enumerated with PC successfully, as Figure 7 show.

3. Open command shell and enter the blhost root path, you can copy the target firmware into the blhost root path too.

4. Type in below commands (as Figure 8):

blhost.exe -u 0x1FC9,0x0021 -- write-memory 0x0000 lpc5500_lpcup_mdk.hex

then the firmware should be updated to LPC55S69 successfully.

5. Click Reset button(S1), the demo is running.

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Figure 7. LPC55S69 Core board USB ISP enumerated on Win7.

Figure 8. Firmware update command through USB HID

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Chapter 4

Running demos

After power the kit (through USB port or use external battery pack), the OLED panel would display welcome characters as Figure

Figure 9. LP55S69 Fingerprint demo power-up.

After 1 second or 2 seconds, the OLED screen may display enroll prompt. To enroll a new finger, user can click S2 or S3 buttons.

Then user need put a finger on the sensor area, once get finger image, the OLED second character line displays “Place Finger

again”, here user should lift the finger then touch the sensor again. The new finger will be enrolled after 3x times, the finger

template will be stored in SRAM (will be destroyed after power-down).

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Figure 10. Enroll a new finger.

Figure 11. Fingerprint recognize success or failed

Then user can touch the sensor area to identify the finger. The recognition result is displayed on the top of OLED, show as

Figure 11

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Chapter 5

Conclusion

Through the LPC55S69JEV98 fingerprint demo kit, testified the VFGBA98 package can use 2-layer PCB layout to do complicate

user applications, like fingerprint sensor, IOT, etc.

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Chapter 6

References

[1] LPC55S6x Data Sheet (Rev 1.1), NXP Semiconductors, 8 April 2019

[2] AN12581 2-layer PCB Layer Design Guide for VFBGA98 package, NXP, 2019

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Chapter 7

Appendix

Component purchasing channels:

1. Fingerprint sensor module BTL192:

Contact with Betterlife Electronic: http://www.blestech.com/

2. OLED screen is UG-6028GDEBF01:

https://www.amazon.com/UG-6028GDEBF02-160x128-1-69-Color-Module/dp/B07J2XVLCP

UG-6028GDEBF02 is pin to pin with UG-6028GDEBF01, driver is same.

NOTE

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Chapter 8

Revision history

Table 5. Revision history

Rev Date Description

0 June 2020 Initial release

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Date of release: June 2020

Document identifier: UM11338

NXP LPC55S6x User guide

NXP LPC55S6x User guide

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