User’s Guide
SX8674 Evaluation Kit
ADVANCED COMMUNICATIONS & SENSING
SX8674 Evaluation Kit
User's Guide
Rev 1 – 12 October 2011
th
1
www.semtech.com
User’s Guide
SX8674 Evaluation Kit
ADVANCED COMMUNICATIONS & SENSING
Table of Contents
1
2
2.1
2.2
2.2.1
2.2.2
3
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
3.11
4
5
5.1
5.2
5.3
5.3.1
5.3.2
5.3.3
5.4
5.5
5.6
5.7
5.8
5.9
6
7
8
Introduction.............................................................................................................................................. 4
Getting Started......................................................................................................................................... 5
Kit Contents ............................................................................................................................................... 5
Installation ................................................................................................................................................. 5
Stand-Alone Demo ..................................................................................................................................... 5
PC Software ............................................................................................................................................... 5
Hardware Description .............................................................................................................................. 6
Overview ................................................................................................................................................... 6
Power Switch............................................................................................................................................. 6
USB Connector.......................................................................................................................................... 6
Battery Connector...................................................................................................................................... 7
uC ............................................................................................................................................................. 7
Stand-alone Jumpers................................................................................................................................. 7
TS Connectors........................................................................................................................................... 7
Motor ......................................................................................................................................................... 7
Push Buttons ............................................................................................................................................. 7
Accelerometer ........................................................................................................................................... 7
LEDs ......................................................................................................................................................... 7
Stand-Alone Demo................................................................................................................................... 8
Graphical User Interface (GUI) ................................................................................................................ 9
Overview ................................................................................................................................................... 9
Drawing Pad ............................................................................................................................................ 10
Call Demo................................................................................................................................................ 11
Angle Threshold........................................................................................................................................ 12
External Sensor ........................................................................................................................................ 12
Software ................................................................................................................................................... 12
Picture View............................................................................................................................................. 13
Picture Edit .............................................................................................................................................. 13
Data Graph.............................................................................................................................................. 13
Touch Settings......................................................................................................................................... 15
Proximity Settings .................................................................................................................................... 16
Haptic Settings ........................................................................................................................................ 16
Schematics............................................................................................................................................. 18
Layout .................................................................................................................................................... 19
References ............................................................................................................................................. 20
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User’s Guide
SX8674 Evaluation Kit
ADVANCED COMMUNICATIONS & SENSING
Table of Figures
Figure 1: SX8674 Typical Application
...................................................................................................................... 4
Figure 2: SX8674EVK Contents
.............................................................................................................................. 5
Figure 3: SX8674EVK Board Picture – Top (left) and Bottom (right).........................................................................
6
Figure 4: SX8674EVK Board Concept – Top (left) and Bottom (right).......................................................................
6
Figure 5: SX8674EVK LEDs Proximity Reporting – Far (left) vs Close (right)
........................................................... 8
Figure 6: SX8674EVK LEDs Touch Reporting – Touch (left) vs Move (right)
............................................................ 8
Figure 7: SX8674EVK GUI Overview.......................................................................................................................
9
Figure 8: SX8674EVK GUI Touch Reporting..........................................................................................................
10
Figure 9: SX8674EVK GUI Proximity Reporting – Far (left) vs Close (right)............................................................
10
Figure 10: SX8674EVK GUI - Call Demo
............................................................................................................... 11
Figure 11: SX8674EVK Face Detection Reporting – Board (left) and GUI (right)
.................................................... 12
Figure 12: SX8674EVK Picture View
..................................................................................................................... 13
Figure 13: SX8674EVK Picture Edit.......................................................................................................................
13
Figure 14: SX8674EVK GUI - Data Graphs
........................................................................................................... 14
Figure 15: SX8674EVK GUI - Touch Settings
........................................................................................................ 15
Figure 16: SX8674EVK GUI - Proximity Settings (Analog)
..................................................................................... 16
Figure 17: SX8674EVK GUI - Proximity Settings (Digital)
...................................................................................... 16
Figure 18: SX8674EVK GUI - Haptic Settings........................................................................................................
17
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User’s Guide
SX8674 Evaluation Kit
ADVANCED COMMUNICATIONS & SENSING
1 Introduction
The purpose of this tool is to provide an evaluation platform for the SX8674/55/56/57/58, a family of haptics enabled
4/5-wire resistive touchscreen controllers with proximity sensing. Typical applications are mobile phones, game
machines, portable music players, POS/POI terminals, etc.
M
HAPTICS DRIVER
NRST
SX8674
MULTITOUCH
CONTROL
I2C
NIRQ
Host
Controller
PROXIMITY SENSING
Figure 1: SX8674 Typical Application
SX8674 main features include:
•
Low Voltage Operation
2.3V to 3.6V Supply
Integrated Low Drop Out (LDO) Regulator
Low Power Consumption
30uA@2.3V 8ksps (ESR)
0.4uA Shut-Down Current
4/5-Wire Touchscreen Interface
Precision, Ratiometric 12-bit ADC
Up to 5000 (X-Y) coordinates/second (c/s)
Programmable Digital Filtering/Averaging
Touch Pressure Measurement (4-Wire)
Integrated Capacitive Proximity Sensing
No Additional Components Required
Uses Resistive Touchscreen or a Simple Conductive Area as the Sensor
>5 cm Detection Distance
8uA @ 200ms Scan Period
Haptics Driver for LRA and ERM Micro Motors
Haptics Waveform Generation Control (I2C or PWM Input)
Short Circuit Protection
Early Warning and Over-Temperature Monitoring and Protection
400kHz I2C Serial Interface
Hardware, Software, and Power-On Reset
15kV HBM & IEC ESD Protection
th
•
•
•
•
•
•
•
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User’s Guide
SX8674 Evaluation Kit
ADVANCED COMMUNICATIONS & SENSING
2 Getting Started
2.1 Kit Contents
As illustrated in the figure below, the SX8674 Evaluation kit is composed of:
SX8674EVK board
SX8674EVK CDROM including all necessary PC software and documentation (requires min Windows XP)
Mini USB cable to connect the SX8674EVK board to the PC
Figure 2: SX8674EVK Contents
2.2 Installation
2.2.1 Stand-Alone Demo
1- Connect the SX8674EVK board to a USB port/supply via the cable provided.
2- Wait for a few seconds.
3- SX8674EVK is now ready to be used! (see §4 for more details).
2.2.2 PC Software
1- Put the CDROM in your computer. If the installation does not start automatically, launch
“SX8654_74EvaluationKitSetup.exe” manually.
2- Follow installation guidelines until the process is completed. Please note that .NET Framework 3.5 will be
automatically downloaded and installed if not detected on your computer.
3- Connect the SX8674EVK board to the PC via the mini USB cable.
4- Launch “Semtech->SX8654_74Evaluation->SX8654_74Evaluation” from Start menu.
5- SX8674EVK is now ready to be used! (see §5 for more details).
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