NXP Semiconductors
UM11759
PCA9846PW-ARD evaluation board
1 Introduction
This document describes the PCA9846PW-ARD evaluation board. The evaluation board
is built around the PCA9846, four-channel ultra-low voltage, FM+ I
2
C-bus switch with
reset, produced by NXP Semiconductors. The evaluation board serves as an expansion
board that can be connected through an Arduino port to various Arduino-compatible
EVK/motherboards with the purpose of testing and measuring the characteristics of the
PCA9846 device under test (DUT). This includes the original Arduino Uno R3.
The development board contains one PCA9846 IC (DUT) and four I
2
C EEPROM ICs,
connected to each channel of PCA9846 IC. The PCA9846PW-ARD expansion board
allows testing and measurement of the static and dynamic characteristics of the DUT
by accessing the EEPROMs from the Arduino port through the PCA9846 I
2
C switch.
PCA9846 is supplied from a programmable power supply, and each EEPROM works
at a different rail voltage. This configuration allows testing of the PCA9846 IC with
several combinations of logic levels. The programmable power supply is controlled by
the motherboard (EVK) through the same Arduino port. Power also is delivered from the
motherboard (EVK) through the Arduino port.
Additionally, a graphical 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 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 the evaluation board and its
supported device(s) on
The information page for PCA9846PW-ARD evaluation board is at
. 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
PCA9846PW-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
3 Getting ready
Working with the PCA9846PW-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
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
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