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TCA8418E-EVM 产品设计参考手册 - TI（德州仪器）
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TCA8418E-EVM数据手册
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若手册格式错乱，请下载阅览PDF原文件
Information About Cautions and Warnings
www.ti.com
24 PCB Layer 4 (Bottom Layer).............................................................................................. 18
List of Tables
1 Device and Package Configurations ...................................................................................... 3
2 Default TCA8418E Register Values When Using the LaunchPad................................................... 10
3 Bill of Materials ............................................................................................................. 19
1 Information About Cautions and Warnings
CAUTION
This EVM contains components that can potentially be damaged by
electrostatic discharge. Always transport and store the EVM in its supplied ESD
bag when not in use. Handle using an antistatic wristband. Operate on an
antistatic work surface. For more information on proper handling, see the
Electrostatic Discharge (ESD) application note (SSYA008).
The information in a caution or a warning is provided for your protection. Read each caution and warning
carefully.
2 Items Required for Operation
The following items are required to use the TCA8418E-EVM:
• TCA8418E-EVM
• TCA8418E datasheet (SCPS222)
• One power supply for V
CC
– 3.3 V at 100 mA recommended
3 Items Recommended for Operation
The following items are recommended for use with the TCA8418E-EVM:
• MSP430 LaunchPad
– Recommended rev 1.5
– MSP430G2553 installed
• USB standard-A to mini-B cable
• Computer running Microsoft
®
Windows
®
7 with 1 available USB port
4 Introduction
This document is the user’s guide for the TCA8418E-EVM. The TCA8418E-EVM can be used as a
standalone system or paired with the MSP-EXP430G2 LaunchPad to facilitate power and I
2
C
communication. When paired with the LaunchPad, The TCA8418E-EVM GUI can be used to read from or
write to internal registers of the TCA8418E keypad scan IC, allowing the user to control the states of the
I/O pins as well as see key presses in real-time.
Microsoft, Windows are registered trademarks of Microsoft Corporation.
2
TCA8418E Keypad Scan EVM SLVUAA2–August 2014
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