NXP Semiconductors
UM11664
SC18IM704-EVB evaluation board
1 Introduction
SC18IM704 is designed to serve as an interface between the standard UART port of a
microcontroller or microprocessor and the serial I
2
C-bus; this allows the microcontroller
or microprocessor to communicate directly with other I
2
C-bus devices. SC18IM704 can
operate as an I
2
C-bus controller. SC18IM704 controls all the I
2
C-bus specific sequences,
protocol, arbitration and timing. The host communicates with SC18IM704 with ASCII
messages protocol; this makes the control sequences from the host to SC18IM704
become very simple.
This document is intended to help the users to quickly setup, configure and operate the
SC18IM704-EVB evaluation board in the users’ hardware platform.
2 Finding kit resources and information on the NXP web site
NXP Semiconductors provides online resources for this evaluation board and its
supported device(s) on
The information page for SC18IM704-EVB evaluation board is at
. The information page provides overview information, documentation,
parametrics, ordering information and a
Getting Started
tab. The
Getting Started
tab
provides quick-reference information applicable to using the SC18IM704-EVB 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 SC18IM704-EVB evaluation board requires the kit contents.
3.1 Kit contents
•
Assembled and tested evaluation board in an anti-static bag
•
Quick Start Guide
4 Getting to know the hardware
The SC18IM704-EVB evaluation board is designed to be connected to an external UART
via a 9-pin RS-232 connector (J1). The SC18IM704-EVB evaluation board has an on-
board I
2
C target serial EEPROM and an I
2
C target LED blinker, which can be directly
accessed by the external host UART via SC18IM704. The external host UART can write,
read, and program the serial EEPROM/LED blinker without requiring an I
2
C target to be
connected to the board.
The SC18IM704-EVB evaluation board also has a I
2
C interface header (JP2) to allow
other I
2
C target devices to be connected to the evaluation board. These I
2
C target
devices can be accessed directly by the external host UART via the SC18IM704 UART to
I
2
C bridge.
UM11664
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2021. All rights reserved.
User manual
Rev. 1.0 — 28 September 2021
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