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NXP Semiconductors

UM11759

PCA9846PW-ARD evaluation board

Rev

Date

Description

1

20220606

Initial version

Revision history

UM11759

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

© NXP B.V. 2022. All rights reserved.

User manual

Rev. 1 — 6 June 2022

2 / 27

Summary of Contents for PCA9846PW-ARD

Page 1: ...evaluation board is an expansion card equipped with Arduino port designated for easy test and design of PCA9846 IC four channel ultra low voltage FM I 2 C bus switch with reset The board is fully com...

Page 2: ...ARD evaluation board Rev Date Description 1 20220606 Initial version Revision history UM11759 All information provided in this document is subject to legal disclaimers NXP B V 2022 All rights reserve...

Page 3: ...n 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 c...

Page 4: ...phical user interface Windows platform GUI is provided to facilitate the evaluation of the expansion board The GUI is used with the following NXP evaluation boards IMXRT1050 EVK Board LPCXpresso55S69...

Page 5: ...asurements Equipped with programmable power supply for logic level combination Onboard I 2 C bus external connector channel 3 and 4 Equipped with Arduino Uno R3 port for direct connection with Arduino...

Page 6: ...same electrical function and placed on the board so the expansion board can be directly inserted in the Arduino port The expansion board uses five signal lines Table 1 is the pin chart of connectors a...

Page 7: ...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 5 D12 MISO Not used 6 D13 SCK Not used 7 GND Power supply return 8 AREF Not used 9 A4 SDA Not used J4 mixed...

Page 8: ...3 A0 connected to VCC_LDOOUT1 2 4 A0 connected to SCL J12 AD0 3 5 4 6 A0 connected to SDA 3 5 A1 connected to GND 1 3 A1 connected to VCC_LDOOUT1 2 4 A1 connected to SCL J13 AD1 3 5 4 6 A1 connected...

Page 9: ...slator PCA9617A U7 The level shifter U7 assures the separation between the logic level of the Arduino port 3 3 V and the selected logic level of the PCA9846 VCC_LDOOUT1 The I 2 C interface of U11 is p...

Page 10: ...the programmable power supply is the adjustable voltage regulator LDK120MK IC U3 As shown in Figure 4 in the feedback loop the analog multiplexer U18 is placed in the feedback loop of the LDO allowin...

Page 11: ...U13 which is supplied with 3 3 V directly from the Arduino port This configuration allows testing of the DUT behavior when working with I 2 C busses at different logic levels Table 4 shows the EEPROM...

Page 12: ...board Figure 6 The PCA9846PW ARD EEPROM 1 8 V section Figure 7 The PCA9846PW ARD EEPROM 2 5 V section UM11759 All information provided in this document is subject to legal disclaimers NXP B V 2022 All...

Page 13: ...section 4 5 Schematic board layout and bill of materials The schematic board layout and bill of materials for the PCA9846PW ARD evaluation board are available at http www nxp com PCA9846PW ARD UM1175...

Page 14: ...erface See Section 6 and Section 7 for more details regarding the operation of PCA9846PW ARD from GUI software 6 Configuring the hardware 6 1 Using the PCA9846PW ARD with an IMXRT1050 EVK board Figure...

Page 15: ...in position 1 2 2 Insert the PCA9846PW ARD expansion card on the Arduino connector of the EVK See Figure 10 3 Using USB connector J28 connect the EVK board to an USB port of the computer 4 Install th...

Page 16: ...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...

Page 17: ...ion board Figure 12 PCA9846PW ARD expansion board and LPCXpresso55S69 motherboard before starting UM11759 All information provided in this document is subject to legal disclaimers NXP B V 2022 All rig...

Page 18: ...the PCA9846PW ARD with an i MX 8M Mini LPDDR4 EVK board When an i MX 8M Mini LPDDR4 EVK board is used with the PCA9846PW ARD board a third board IMX8MMINI IARD interposer board must be used especiall...

Page 19: ...interposer board to J1003 connector on the EVK To power up the EVK a 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 to power up the s...

Page 20: ...another device The PCA9846PW ARD expansion board can be operated with other EVK board which has an Arduino port There are two options to connect the board Use another EVK equipped with an Arduino port...

Page 21: ...ation can support two different boards In Figure 16 the selected board is PCA9846PW Selecting a wrong expansion board causes the connection to fail Assuming the correct parameters are chosen clicking...

Page 22: ...CII character in the Input Data box Select the desired channel to use for data write Select the corresponding EEPROM box The selected box will change to red Click on Send Data When the Send Data butto...

Page 23: ...t emitting diode PC personal computer USB universal serial bus Table 6 Abbreviations 9 References 1 PCA9846 4 channel ultra low voltage Fm I 2 C bus switch with reset data sheet 2 https www nxp com we...

Page 24: ...rduino Uno R3 reference manual NXP Semiconductors 10 UM11612 IMX8MMINI IARD interposer board user manual 11 NXP EVK Firmware and GUI Installation Guide for Arduino Series Boards user manual NXP Semico...

Page 25: ...g for the customer s applications and products using NXP Semiconductors products in order to avoid a default of the applications and the products or of the application or use by customer s third party...

Page 26: ...846PW ARD EEPROM 3 6 V section 13 Fig 10 PCA9846PW ARD expansion board and IMXRT1050 EVK before starting 15 Fig 11 Assembly PCA9846PW ARD expansion board and IMXRT1050 EVB operation 16 Fig 12 PCA9846P...

Page 27: ...rials 13 5 Installing and configuring software tools 14 6 Configuring the hardware 14 6 1 Using the PCA9846PW ARD with an IMXRT1050 EVK board 14 6 2 Using the PCA9846PW ARD with an LPCXpresso55S69 dev...

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