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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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User's Guide
SLVUAA2–August 2014
TCA8418E Keypad Scan EVM
This user’s guide describes the TCA8418E-EVM keypad scan evaluation module (EVM). This guide
contains an introduction, setup instructions, the EVM schematic, top and bottom board layouts, and a bill
of materials (BOM).
Contents
1 Information About Cautions and Warnings............................................................................... 2
2 Items Required for Operation .............................................................................................. 2
3 Items Recommended for Operation....................................................................................... 2
4 Introduction ................................................................................................................... 2
5 Setup .......................................................................................................................... 4
5.1 Header/Jumper Connections Description........................................................................ 4
5.2 LaunchPad Hardware/Firmware Setup ......................................................................... 5
5.3 GUI Software Setup ................................................................................................ 9
5.4 Default Register Settings in the TCA8418E when Using the LaunchPad ................................. 10
5.5 Getting Started Using the TCA8418E-EVM.................................................................... 11
6 Schematic ................................................................................................................... 14
7 Board Layout................................................................................................................ 15
8 Bill of Materials ............................................................................................................. 19
List of Figures
1 TCA8418E-EVM ............................................................................................................. 3
2 Header J5 Connections to TCA8418E Pins (Top View)................................................................ 4
3 Proper Jumper Configuration on the LaunchPad........................................................................ 5
4 Proper Orientation for the TCA8418E-EVM on the LaunchPad. ...................................................... 6
5 Opening Device Manager in Windows.................................................................................... 6
6 Updating Driver Software in Device Manager............................................................................ 7
7 Browsing for the Driver Software .......................................................................................... 7
8 Successful Installation of the MSP430 LaunchPad Drivers............................................................ 7
9 Flashing the MSP430 ....................................................................................................... 7
10 Successfully Flashed MSP430............................................................................................. 8
11 Installing the TCA8418E-EVM GUI........................................................................................ 9
12 TCA8418E-EVM GUI After Connecting the LaunchPad to the Computer ........................................... 9
13 TCA8418E-EVM GUI After Connecting the LaunchPad to the Computer.......................................... 11
14 Key Press Matrix Display While Holding Down the Middle Button (SW12)......................................... 12
15 Main Configuration and Input Register Display ........................................................................ 12
16 Reading Register 0x0E.................................................................................................... 13
17 Result of Reading Register 0x0E ........................................................................................ 13
18 Writing 0xA6 to Register 0x0E............................................................................................ 13
19 Result of Writing 0xA6 to Register 0x0E................................................................................ 13
20 TCA8418E-EVM Schematic .............................................................................................. 14
21 PCB Layer 1 (Top Layer).................................................................................................. 15
22 PCB Layer 2 (GND)........................................................................................................ 16
23 PCB Layer 3 (VCC)........................................................................................................ 17
1
SLVUAA2–August 2014 TCA8418E Keypad Scan EVM
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