NXP Semiconductors UM11760 User manual

UM11760
PCA8561AHN-ARD evaluation board
Rev. 1.0 — 21 April 2022 User manual
Document information
Information Content
Keywords PCA8561AHN, I2C-bus, LCD, segment driver Arduino port, EVK
Abstract The PCA8561AHN-ARD evaluation board is a daughter card equipped with
Arduino port, designated for easy test and design of PCA8561 IC, automotive
18x4 LCD segment driver. The board is fully compliant with IMXRT1050
EVK, LPCXpresso55S69 (LPC55S69-ECK) and i.MX 8M Mini LPDDR4 EVK
(8MMINILPD4-EVK, 8MMINID4-EVK), including GUI software control. The
board can be attached to any device equipped with an Arduino port.

NXP Semiconductors UM11760
PCA8561AHN-ARD evaluation board
Rev Date Description
v.1.0 20220421 Initial version
Revision history
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Important notice
IMPORTANT NOTICE
For engineering development or evaluation purposes only
NXP provides the product under the following conditions:
This evaluation kit is for use of ENGINEERING DEVELOPMENT OR
EVALUATION PURPOSES ONLY. It is provided as a sample IC pre-
soldered to a printed-circuit board to make it easier to access inputs,
outputs and supply terminals. This evaluation board may be used with any
development system or other source of I/O signals by connecting it to the
host MCU computer board via off-the-shelf cables. This evaluation board
is not a Reference Design and is not intended to represent a final design
recommendation for any particular application. Final device in an application
heavily depends on proper printed-circuit board layout and heat sinking
design as well as attention to supply filtering, transient suppression, and I/O
signal quality.
The product provided may not be complete in terms of required design,
marketing, and or manufacturing related protective considerations, including
product safety measures typically found in the end device incorporating the
product. Due to the open construction of the product, it is the responsibility of
the user to take all appropriate precautions for electric discharge. In order to
minimize risks associated with the customers’ applications, adequate design
and operating safeguards must be provided by the customer to minimize
inherent or procedural hazards. For any safety concerns, contact NXP sales
and technical support services.
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1 Introduction
This document describes the PCA8561AHN-ARD evaluation board. The evaluation board
is built around the PCA8561, automotive 18x4 LCD segment driver, produced by NXP
Semiconductors. The evaluation board serves as a daughter card that can be connected
through an Arduino port to various Arduino compatible (including original Arduino Uno
R3) EVK / mother boards with the purpose of testing and measuring the characteristics of
the PCA8561AHN Device Under Test (DUT).
The PCA8561 IC is an 18x4 LCD segment driver, automotive grade, is built in two
variants: the PCA8561AHN equipped with I2C-bus, and PCA8561BHN equipped with
SPI-bus. The PCA8561AHN-ARD daughter board is equipped with the I2C-bus version
of the LCD driver. The DUT (PCA8561AHN) drives the on-board LCD display “DE301-
RS-20/6.35”, and is controlled from the mother board through the Arduino port. The
board allow the user to test and measure the static and dynamic characteristic of the
PCA8561 IC for different configurations specified in the datasheet. The power supply is
provided from the same Arduino port.
Additionally, a Graphical User Interface (Windows platform) is provided to facilitate the
evaluation of the daughter board. The GUI is used with the following NXP evaluation
boards: IMXRT1050 EVK Board, LPCXpresso55S69 Development Board and i.MX 8M
Mini LPDDR4 EVK Board.
2 Finding kit resources and information on the NXP web site
NXP Semiconductors provides online resources for evaluation board and its supported
device(s) on http://www.nxp.com.
The information page for PCA8561AHN-ARD evaluation board is at http://http://
www.nxp.com/PCA8561AHN-ARD. The information page provides overview information,
documentation, software and tools, parametrics, ordering information and a Getting
Started tab. The Getting Started tab provides quick-reference information applicable
to using the PCA8561AHN-ARD evaluation board, including the downloadable assets
referenced in this document.
2.1 Collaborate in the NXP community
The NXP community is for sharing ideas and tips, ask and answer technical questions,
and receive input on just about any embedded design topic.
The NXP community is at http://community.nxp.com.
3 Getting ready
Working with the PCA8561AHN-ARD requires the kit contents, additional hardware, and
a Windows PC workstation with installed software.
3.1 Kit contents
•Assembled and tested evaluation board in an antistatic bag
•Quick Start Guide
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3.2 Assumptions
Familiarity with the I2C bus is helpful but not required.
3.3 Static handling requirements
CAUTION
This device is sensitive to ElectroStatic Discharge (ESD). Therefore care
should be taken during transport and handling. You must use a ground strap
or touch the PC case or other grounded source before unpacking or handling
the hardware.
3.4 Minimum system requirements
This evaluation board requires a Windows PC workstation. Meeting these minimum
specifications should produce great results when working with this evaluation board.
•Computer with Windows 10
•One USB port (either 3.0 or 2.0 or 1.1 compatible)
•One of three EVK boards (MIMXRT1050-EVK, LPC55S69-EVK, 8MMINILPD4-EVK)
along with the associated firmware / GUI software
•USB cable for power and data connection between PC and EVK board (if not included
in the EVK package)
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4 Getting to know the hardware
4.1 PCA8561AHN-ARD features
•Equipped with Arduino Uno R3 port for direct connection with Arduino devices;
•On-board reset switch;
•On-board jumpers for I2C address;
•Fully compliant with IMXRT1050 EVK board, including GUI (Windows 10);
•Fully compliant with LPCXpresso55S69 dev. board, including GUI (Windows 10);
•Compliant with i.MX Mini LPDDR4 EVK board, including GUI (Windows 10);
Note: For i.MX Mini LPDDR4 EVK Board is necessary to use IMX8MMINI-IARD
interposer board between the EVK and PCA8561AHN-ARD daughter board (see
IMX8MMINI-IARD User Manual).
4.2 Kit featured components
Figure 1 identifies the main components on the board. The main elements are called out
in the picture. The Arduino port connectors (J1, J4, J5, J6) are located on the bottom side
of the board.
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Figure 1. The PCA8561AHN-ARD board picture, top view (up) and bottom view (down)
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4.3 Schematic diagram
The schematic diagram of PCA8561AHN-ARD is available at URL: http://www.nxp.com/
PCA8561AHN-ARD.
4.4 Arduino port
J1, J4, J5, and J6 are the mated pin headers of Arduino Uno R3 connectors, having the
same electrical function and placed on the board, so that the daughter board can be
directly inserted in the Arduino port. The daughter card is using only four signal lines.
Table 1 represents the pin chart of connectors, and the lines used in the circuit (see also
the SPF-46661_A.pdf schematic file):
Ref Des # Arduino label PCA8561AHN-ARD function
1 NC Not used
2 IOREF Not used
3 RESET Not used
4 3.3V Not used
5 5V Power supply
6 GND Power supply return
7 GND Power supply return
J6 (Power)
8 Vin Not used
1 A0 Not used
2 A1 Not used
3 A2 Not used
4 A3 Not used
5 A4 / SDA I2C – SDA
J1 (analog, digital, I2C)
6 A5 / SCL I2C – SCL
1 D0 / RX RST
2 D1 / TX CLK_CONN
3 D2 Not used
4 D3 / PWM Not used
5 D4 Not used
6 D5 / PWM Not used
7 D6 / PWM Not used
J5 (digital, UART, PWM)
8 D7 Not used
1 D8 Not used
2 D9 / PWM Not used
3 D10 / SS / PWM Not used
4 D11 / MOSI / PWM Not used
J4 (mixed)
5 D12 / MISO Not used
Table 1. The pin chart of Arduino connectors and their usage
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Ref Des # Arduino label PCA8561AHN-ARD function
6 D13 / SCK Not used
7 GND Power supply return
8 AREF Not used
9 A4 / SDA Not used
10 A5 / SCL Not used
Table 1. The pin chart of Arduino connectors and their usage...continued
The circuit is supplied from Arduino port through J6 and J4. Pin no. 4 of J6 is 3.3 V power
supply while pin no. 5 of J6 is 5 V power supply. Pin no. 6, 7 of J6, and pin no. 7 of J4
represents the power supply return (ground).
4.5 LCD driver
Figure 2 shows the LCD driver and display section of PCA8561AHN-ARD schematic
diagram. The DUT (U1) is controlled through the I2C-bus (A5 / SCL and A4 / SDA,
Arduino connector J1). The I2C port of PCA8561AHN are pin 8 for SCL, and pin 9 for
SDA. R15 and R16 are the I2C pull-up resistors.
The reset input (U1, pin 5) can be activated locally by pressing the on-board switch SW1,
or remote from the GUI software through the Arduino port (connector J5, pin 1).
The PCA8561 IC has an internal clock that can also be clocked externally. The external
clock is provided from the EVK through pin 2 of the Arduino connector J5. When the
internal clock is used, the CLK pin of DUT (U1, pin 7) can be configured as output which
provides the clock signal. In this case, the jumper header J10 shall be removed. When
the external clock is used, J10 shall be installed, and U1 configured to work with external
clock.
The PCA8561 drives the “DE301-RS-20/6.35” LCD display (U2). The U2 has an eight-
character display, but the driver controls only four (most significant) characters.
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Figure 2. PCA8561AHN-ARD – LCD driver (up), LCD display (down)
4.6 Power supply
Figure 3 depicts the power supply section of schematic diagram (SPF-46661_A.pdf
file). The board is supplied with 3.3 V, and 5 V, both voltages being supplied by the
Arduino port. LED D1 is the 3.3 V power supply indicator (VCC_3V3_MAIN power net).
The LED D3 is the 5V power supply indicator and D2 is 5 V power supply indicator
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(VCC_5V_MAIN power net). The transistors Q1 and Q2 assures the required power-up
and power-down sequence of the LCD driver. See the power sequences section in the
PCA8561 datasheet.
Figure 3. The PCA8561AHN-ARD – Power supply
4.7 Jumpers and test points
The board is containing four jumpers and several test points. Table 2 and Figure 4 details
the jumper locations and their default configurations. Table 3 describes the test points
located on the PCA8561AHN-ARD board.
Ref Des Label Default Description
1-2: A0 = 1
J7 A0 2-3 2-3: A0 = 0
1-2: A1 = 1
J8 A1 2-3 2-3: A1 = 0
1-2: Power on Reset Enable
J9 PORE 1-2 2-3: Power on Reset Disable
OFF: Internal clock
J10 EXT CLK OFF ON (1-2): External clock
Table 2. PCA8561AHN-ARD jumpers
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Figure 4. PCA8561AHN-ARD Jumper locations
Ref Des Test point / jumper label Description
TP1 SCL I2C SCL line
TP2 SDA I2C SDA line
TP3 RST Reset
TP4 CLK Clock
TP5 3V3 VCC_3V3 rail (Arduino port)
TP6 5V0 VCC_5V0 rail (Arduino port)
TP7 3V3_MAIN VCC_3V3_MAIN rail
TP9 GND Ground
TP10 GND Ground
TP11 5V0_MAIN VCC_5V0_MAIN rail
Table 3. PCA8561AHN-ARD test points
5 Installing and configuring software tools
PCA8561AHN_ARD evaluation board is designed and built as a daughter board able to
work in conjunction with a mother board equipped with an Arduino port. The board was
built to be fully compatible with the following NXP Evaluation (EVK) boards:
•IMXRT1050 EVK Board;
•LPCXpresso55S69 Development Board;
•i.MX 8M Mini LPDDR4 EVK Board;
Each above mentioned evaluation/development board benefits by firmware support
which can be downloaded from NXP company site (www.nxp.com/). Before starting,
the EVK motherboard must be programmed with the corresponding firmware
package. Additionally, a GUI application (Windows 10) is available for download
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from the NXP site, allowing rapid testing and operation of PCA8561AHN-ARD
daughter board through the one of above mentioned EVK. For details regarding
installation of the EVK firmware and GUI host software on PC please download
EVK_Firmware_And_GUI_Install_Guide_For_Arduino_Boards.pdf instruction file from
NXP site (www.nxp.com/). Once the software is installed, the first step is to select the
correct combination EVK – PCA8561AHN-ARD daughter card, and then the board
can be controlled from the GUI interface. See Section 6 and Section 7 for more details
regarding the operation of PCA8561AHN-ARD from GUI software.
6 Configuring the hardware
6.1 Using the PCA8561AHN-ARD with an IMXRT1050 EVK board
Figure 5 shows the required hardware for operation of the PCA8561AHN-ARD daughter
board with IMXRT1050 EVK. The following items are necessary:
•One IMXRT1050-EVK board
•One PCA8561AHN-ARD daughter board
•One USB-A / USB Micro-B cable
•A PC with Windows 10 operating system
The IMXRT1050 EVK mother board can be powered by one of the three methods:
•Connecting an external 5VDC power supply to the barrel power connector (J2) on the
board
•Connecting an USB cable from the PC to the Micro-B USB connector (J9) on the board
•Connecting an USB cable from the PC to the USB connector (J28) on the board. When
the PC is connected in this fashion, the USB port can simultaneously act as a debug
interface. Therefore, by using a single USB cable connected to J28, the EVK can be
powered and at the same time linked to the PC for data exchange.
The older USB ports (from PC) are not able to deliver the necessary current (500mA),
before establishing the communication, use an external power supply (connected to J2).
From J1 on the EVK board (see Figure 5) the user can select the power configuration for
the mother board. For further details, see the i.MX RT1050 Processor Reference Manual
i.MX RT1050 Processor Reference Manual
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Figure 5. PCA8561AHN-ARD daughter board and IMXRT1050 EVK board, before starting
To configure the hardware and workstation, complete the following procedure:
1. Configure the suitable power configuration of EVK (J1). If using J28 for power supply,
the J1 jumper shall be placed in position 5-6. If using an external power supply
(connected to J2), the jumper J1 will be placed in position 1-2
2. Insert the PCA8561AHN-ARD daughter card on the Arduino connector of the EVK
(see Figure 5)
3. Using USB connector J28, connect the EVK board to an USB port of the computer
4. Install the IMXRT1050 target firmware (download from NXP site and see UM11581,
Arduino shields GUI and firmware installation manual for step-by-step instructions)
5. Install GUI application (see UM11581, Arduino shields GUI and firmware installation
manual)
6. Open the GUI application to operate the device from the PC. For details regarding
GUI operation see section 8 “GUI description”
Figure 6 shows the boards during the operation.
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Figure 6. The assembly PCA8561AHN-ARD daughter board / IMXRT1050 EVK board operation
6.2 Using the PCA8561AHN-ARD with an LPCXpresso55S69
development board
Figure 7 shows the required hardware for operation of the PCA8561AHN-ARD and
LPCXpresso55S69 EVK board. This configuration consists of:
•One LPCXpresso55S69 EVK board
•One PCA8561AHN-ARD daughter board
•One USB-A / USB Micro-B cable
•A PC with Windows 10 operating system
The LPCXpresso55S69 development board is equipped with four USB Micro-B
connectors: P5, P6, P9 and P10. The board can be powered through any USB port.
Using P6 USB connector to connect the board to the PC simplifies the start-up operation
because P6 is designated for debugging and the USB cable thus accomplishes two tasks
at the same time: powering the board, and serving as a data link between the EVK board
and PC. For more details regarding power-up and operation of the LPCXpresso55S69
development board, see the LPCXpresso55S69/LPCXpresso55S28 Development Board
User Manual here.
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Figure 7. PCA8561AHN-ARD daughter board and LPCXpresso55S69 mother board, before starting
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The following steps describe how to assemble, program, and operate the configuration
shown in Figure 7.
1. Insert the PCA8561AHN-ARD daughter card to P16 – P19 connectors located on
LPCXpresso55S69 development board (see the marked pins of P16 – P19, Figure 7)
2. Connect the development board using port P6 USB port of PC
3. Install the LPCXpresso55S69 target firmware (download from NXP site and read the
EVK_Firmware_And_GUI_Install_Guide_For_Arduino_Boards.pdf instruction file)
4. Install GUI application on PC (see the instruction file called out in the previous step)
5. Open the GUI application to operate the device from the PC. For details regarding
GUI operation see Section 7
Figure 8 shows the two boards in operation.
Figure 8. PCA8561AHN-ARD daughter board / LPCXpresso55S69 mother board operation
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6.3 Using the PCA8561AHN-ARD with an i.MX 8M Mini LPDDR4 EVK
board
When an i.MX 8M Mini LPDDR4 EVK board is used with the PCA8561AHN-ARD
board, a third board (IMX8MMINI-IARD interposer board) must be used, especially
designed and built as EVK – daughter board interconnection. The EVK board i.MX
8M Mini LPDDR4 is not equipped with an Arduino port; instead it has a 2 x 20 pin
expansion connector (J1003, see i.MX 8M Mini LPDDR4 EVK user manual). J1003 is a
multipurpose port, containing various digital I/O lines, including specialized I2C and SPI
buses. Starting from the expansion connector pin chart, an Arduino port interposer board
was developed, with the role of signal-to-signal bridge between the 2 x 20 connector pins
on the i.MX 8M Mini LPDDR4 EVK and the mated connectors of the Arduino port present
on the PCA8561AHN-ARD daughter board.
To operate the setup, along with the EVK and the daughter board, a third board must be
included in the setup assembly. Figure 9 shows the necessary boards and how these
boards are connected. The configuration consists of:
•One i.MX 8M Mini LPDDR4 EVK board
•One PCA8561AHN-ARD daughter board
•One IMX8MMINI-IARD interposer board
•One USB-A / USB-C cable
•One USB-A / USB Micro-B cable
•A PC with Windows 10 operating system
It is recommended to attach the PCA8561AHN-ARD to the Arduino connectors of the
IMX8MMINI-IARD interposer board first, and then the resulting assembly to the i.MX 8M
Mini LPDDR4 EVK. This can be done by plugging J1 connector located on the interposer
board to J1003 connector on the EVK.
To power-up the EVK, an USB-C type cable connected to PORT 2 of the EVK is used.
The power switch SW101 on the EVK board must be set to ON position to power-up
the setup. Data communication is achieved by routing a separate USB (Micro-B type)
cable from an USB port on the PC to debug port (J901) on the EVK (see Figure 9 and
Figure 10).
The user may find details regarding power-up and operation of the setup assembly in
8MMINILPDDR4-EVK user manual and IMX8MMINI-IARD User Manual. The files can be
downloaded from www.nxp.com/.
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Figure 9. The assembly PCA8561AHN-ARD daughter board, IMX8MMINI-IARD interposer board, and i.MX 8M Mini
LPDDR4 EVK, before starting
To configure and operate the setup, follow the below steps:
1. Insert the PCA8561AHN-ARD onto the IMX8MMINI-IARD interposer board Arduino
connectors (located on the top side)
2. Attach IMXMMINI-IARD connector plug J1 (located on the bottom of the board) into
J1003 expansion board located on the top side of i.MX 8M Mini LPDDR4 EVK (see
Figure 9)
3. Power-up the EVK board using an USB Type C cable attached to PORT 2
4. Connect the EVK to the PC, using an USB Micro-B cable, attached to J901 debug
port
5. Place SW101 in ON position to power-up the boards
6. Install the MIMXRT1050 target firmware (download UM11581, Arduino shields GUI
and firmware installation manual from NXP site)
7. Install GUI application on the PC (see the instruction file referred in the above step)
8. Open the GUI application to operate the device from the PC. For details regarding
GUI operation see Section 7
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Figure 10. PCA8561AHN-ARD daughter board / i.MX 8M Mini LPDDR4 EVK board operation
6.4 Using PCA8561AHN-ARD with another device
The PCA8561AHN-ARD daughter board can be operated with other EVK board, which
has an Arduino port. There are two options to connect the board: using other EVK
equipped with an Arduino port, and an EVK without Arduino port. In the first case, a
firmware shall be developed according with PCA8561 specifications, and then simply
attach PCA8561AHN-ARD daughter board to the EVK, to operate the board. In the
second case, using the pin chart of Arduino connectors (Table 1), make the necessary
electrical connections (for power, I2C-bus and control lines), and develop the desired
firmware, assuring that is compliant with IC specifications. Use PCA8561 datasheet to
read details about internal registers of the DUT IC and data exchange between internal
controller and the EVK. Assure for correct electrical connections and avoid data conflicts
on the signal lines, to prevent IC damage.
7 GUI description
A GUI application is available for the four EVK boards from NXP Semiconductors. The
application is common for all three EVKs described in Section 6.
This section describes the GUI application and how the user can control the
PCA8561AHN-ARD daughter board from the graphical interface. First, install the GUI
package and software on the PC (Windows 10). For more details, see UM11581.
Once installation is complete, assure that one of the mentioned three EVK with attached
PCA8561AHN-ARD daughter board is connected to PC and powered-on. Open
“NXP_GUI(PCA8561AHN)” GUI application. An interface will appear as is shown in
Figure 11.
The GUI application starts with SETTINGS tab (marked with red arrow). The left side of
the window displays Board settings. The section provides the following settings:
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