SI7013EVB-UDP-M3L1 Datasheet, PDF (1/26 Pages) Silicon Laboratories – Si7013EVB-UDP-M3L1 Users Guide

Si7013EVB-UDP-M3L1
Si7013EVB-UDP-M3L1 User’s Guide
1. Introduction
This user's guide describes the hardware and software included with the Si7013EVB-UDP and
Si7013EVB-UDP-M3L1 evaluation kits. This user's guide is included in the evaluation kit. The Si7013EB-UDP port
header card contains an Si7013 sensor. The port header card plugs into a Unified Development Platform (UDP)
SiM3L1xx 32-bit MCU card with Multiplexed LCD (SiM3L1xxLCD-B-DK).
The Si7013EVB-UDP-M3L1 evaluation kit serves as a demonstration of the Si7013 Digital Humidity and
Temperature Sensor combined with the SiM3L1xx High-Performance, Low-Power, 32-Bit Precision32™ MCU
functioning as a battery operated temperature/humidity data logger. It includes the software running on the
SiM3L1xx MCU as well as a PC-based application used to configure the data logger and retrieve the data.
In addition to being a demonstration of and an example design for a low-power data logger, this evaluation kit
contains the hardware and software needed to begin the development of virtually any application designed around
the Si7013 and SiM3L1xx.
The two main hardware components of Si7013EVB-UDP-M3L1 kit are:
UDP SIM3L1XX-LCD MCU Unified Development Platform (UDP) SiM3L1xx MCU card with multiplexed
LCD
Si7013EB-UDP port header card
Note: Si7013EB-UDP refers to the board, and Si7013EVB-UDP refers to the kit.
The port header card contains an Si7013 sensor; it plugs into the MCU card, which acts as the system
motherboard. The Si7013EVB-UDP-M3L1 kit also includes a CD containing software and documentation, including
this manual.
2. Hardware Description
Figure 1 shows the Si7013EB-UDP plugged into an SiM3L1xx MCU card (SiM3L1xxLCD-B-DK). Figure 2 is a
close-up of the Si7013EB-UDP port header card. As will be explained in more detail below, the Si7013EB-UDP can
be used with other Silicon Laboratories unified development platforms.
The Si7013 temperature and humidity sensor uses the standard I²C communications protocol. This two-wire
bidirectional bus has a clock signal, “SCL”, and a bi-directional data line, “SDA”. For more information about the
Si7013 and its I²C interface, refer to the Si7013 data sheet. Two independent I²C buses are implemented on the
port header card - one for the on-board Si7013 and one for an optional “postage stamp” size evaluation board
connected via a flex cable. Figure 3 shows an external “postage stamp” size evaluation board for the Si7013,
Si7020, or Si7021. The “postage stamp” size evaluation boards and a 3-foot, flat, flexible cable are included with
the Si7013USB-DONGLE evaluation kit and can be ordered separately.
Rev. 0.2 9/13
Copyright © 2013 by Silicon Laboratories
Si7013EVB-UDP-M3L1