Texas Instruments TCA8418E, User Manual

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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
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2
2 Items Required for Operation
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2
3 Items Recommended for Operation
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2
4 Introduction
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2
5 Setup
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4
5.1 Header/Jumper Connections Description
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4
5.2 LaunchPad Hardware/Firmware Setup
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5
5.3 GUI Software Setup
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9
5.4 Default Register Settings in the TCA8418E when Using the LaunchPad
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10
5.5 Getting Started Using the TCA8418E-EVM
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11
6 Schematic
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14
7 Board Layout
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15
8 Bill of Materials
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19
List of Figures
1 TCA8418E-EVM
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3
2 Header J5 Connections to TCA8418E Pins (Top View)
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4
3 Proper Jumper Configuration on the LaunchPad
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5
4 Proper Orientation for the TCA8418E-EVM on the LaunchPad.
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6
5 Opening Device Manager in Windows
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6
6 Updating Driver Software in Device Manager
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7
7 Browsing for the Driver Software
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7
8 Successful Installation of the MSP430 LaunchPad Drivers
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7
9 Flashing the MSP430
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7
10 Successfully Flashed MSP430
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8
11 Installing the TCA8418E-EVM GUI
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12 TCA8418E-EVM GUI After Connecting the LaunchPad to the Computer
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13 TCA8418E-EVM GUI After Connecting the LaunchPad to the Computer
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14 Key Press Matrix Display While Holding Down the Middle Button (SW12)
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15 Main Configuration and Input Register Display
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16 Reading Register 0x0E
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17 Result of Reading Register 0x0E
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18 Writing 0xA6 to Register 0x0E
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19 Result of Writing 0xA6 to Register 0x0E
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20 TCA8418E-EVM Schematic
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21 PCB Layer 1 (Top Layer)
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22 PCB Layer 2 (GND)
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23 PCB Layer 3 (VCC)
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17
1 SLVUAA2 – August 2014 TCA8418E Keypad Scan EVM
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