ID 413C: Can Touch This: Designing Capacitive-Based Touch Solutions Mark F Rodriguez Senior Engineering 13 October 2010 Version: 1.0 Xaplos Inc.

2 Mr. Mark F Rodriguez Senior Xaplos, Inc. Technology consultant with over 12 years of design experience. Responsible for the successful release of over 20 commercial products Special interest in medical device industry and home-based healthcare systems BSBE/MSBE from the University of Miami RECENT HMI RELATED PROJECTS: Handheld aftermarket automotive tuning unit Wearable life-sustaining medical device Educational tablet device for elementary students Reference design for Arrow Electronics Marine power distribution system

Renesas Technology and Solution Portfolio Microcontrollers & Microprocessors #1 Market share worldwide * Analog and Power Devices #1 Market share in low-voltage MOSFET** Solutions for Innovation ASIC, ASSP & Memory Advanced and proven technologies * MCU: 31% revenue basis from Gartner "Semiconductor Applications Worldwide Annual Market Share: Database" 25 March 2010 **Power MOSFET: 17.1% on unit basis from Marketing Eye 2009 (17.1% on unit basis).

4 Renesas Technology and Solution Portfolio Microcontrollers & Microprocessors #1 Market share worldwide * Analog and Power Devices #1 Market share in low-voltage MOSFET** ASIC, ASSP & Memory Advanced and proven technologies * MCU: 31% revenue basis from Gartner "Semiconductor Applications Worldwide Annual Market Share: Database" 25 March 2010 **Power MOSFET: 17.1% on unit basis from Marketing Eye 2009 (17.1% on unit basis). Solutions for Innovation

5 Microcontroller and Microprocessor Line-up Superscalar, MMU, Multimedia  Up to 1200 DMIPS, 45, 65 & 90nm process  Video and audio processing on Linux  Server, Industrial & Automotive  Up to 500 DMIPS, 150 & 90nm process  600uA/MHz, 1.5 uA standby  Medical, Automotive & Industrial  Legacy Cores  Next-generation migration to RX High Performance CPU, FPU, DSC Embedded Security  Up to 10 DMIPS, 130nm process  350 uA/MHz, 1uA standby  Capacitive touch  Up to 25 DMIPS, 150nm process  190 uA/MHz, 0.3uA standby  Application-specific integration  Up to 25 DMIPS, 180, 90nm process  1mA/MHz, 100uA standby  Crypto engine, Hardware security  Up to 165 DMIPS, 90nm process  500uA/MHz, 2.5 uA standby  Ethernet, CAN, USB, Motor Control, TFT Display High Performance CPU, Low Power Ultra Low Power General Purpose

6 Microcontroller and Microprocessor Line-up Superscalar, MMU, Multimedia  Up to 1200 DMIPS, 45, 65 & 90nm process  Video and audio processing on Linux  Server, Industrial & Automotive  Up to 500 DMIPS, 150 & 90nm process  600uA/MHz, 1.5 uA standby  Medical, Automotive & Industrial  Legacy Cores  Next-generation migration to RX High Performance CPU, FPU, DSC Embedded Security  Up to 10 DMIPS, 130nm process  350 uA/MHz, 1uA standby  Capacitive touch  Up to 25 DMIPS, 150nm process  190 uA/MHz, 0.3uA standby  Application-specific integration  Up to 25 DMIPS, 180, 90nm process  1mA/MHz, 100uA standby  Crypto engine, Hardware security  Up to 165 DMIPS, 90nm process  500uA/MHz, 2.5 uA standby  Ethernet, CAN, USB, Motor Control, TFT Display High Performance CPU, Low Power Ultra Low Power General Purpose R8C 16 Bit CISC Superb Noise Performance Low Power Consumption Higher Functionality ASSP Lineup Low Pin Count Lineup

7 Innovation The Cloud TV Remote Control Medical Aggregation Box BP Monitor Pedometer Scale

8 Renesas’ Capacitive Touch Solution Renesas now provides an advanced sensor scanning unit (SCU) implemented in hardware along with a complete set of tools for capacitive touch solutions. The FREE tools available include: Tuning Software Sensor API Touch Library Example Code Apple’s Magic Trackpad

9 Agenda What can I do with the Renesas capacitive touch solution? How do I actually code up an application with what Renesas provides? How to dance like MC Hammer!

Agenda

11 Agenda What can I do with the Renesas capacitive touch solution? How do I actually code up an application with what Renesas provides? How to dance like MC Hammer! Q&A

12 Key Takeaways Learn about typical capacitive touch interfaces and when to use them Understand how to handle keys, sliders, and wheels within your application code Become familiar with the Renesas touch library model and its intuitive API

13 Switches Wheels Sliders Capacitive Touch Interfaces Gestures

14 Capacitive Touch Interfaces

15 Distinct software layers for easy management Firmware available in source format Optimized driver tightly coupled to SCU Complete Sensor API to enable customization Support for Wheel, Slider, Switch, and Matrix configurations Renesas Software Architecture

16 Overview Of Using The Touch Library

17 Overview Of Using The Touch Library

18 The Primitives Functions Touch_Init Touch_Register_Sensor Touch_Unregister_Sensor Touch_Start Touch_Handler Data Types Sensor_Type_t Sensor_State_t Orientation_t Polarity_t Direction_t Sensor_Params_t Sensor_t

19 Let’s Start Out Simple: The Switch Switch Types Toggle Momentary Repeat Proximity Sensor_Params_t SwitchParams; /* Initialization code */ SwitchParams.id = 0; SwitchParams.type = TOGGLE_SWITCH; SwitchParams.channel = 7; SwitchParams.debounce = TRUE; SwitchParams.callback = Switch_Event Touch_Register_Sensor(&SwitchParams);

20 Let’s Start Out Simple: The Switch int Switch_Event(Sensor_t *Switch) { if (Switch->state == ACTIVE) { Led_State(LED_7, ON); } else { Led_State(LED_7, OFF); }

21 The Electric Slide Sensor_Params_t SliderParams; /* Initialization code */ SliderParams.id = 1; SliderParams.type = SLIDER; SliderParams.channel = 1; SliderParams.count = 6; SliderParams.resolution = 2; SliderParams.orientation = EAST_WEST; SliderParams.callback = Slider_Event Touch_Register_Sensor(&SliderParams);

22 The Electric Slide int Slider_Event(Sensor_t *Slider) { if (Slider->state == TOUCHED) { if (Slider->position <= 8) { /* … */ } else if (Slider->position <= 16) { /* … */ } /* … */ }

23 The Wheels On The Bus Go… Sensor_Params_t WheelParams; /* Initialization code */ WheelParams.id = 2; WheelParams.type = WHEEL; WheelParams.channel = 10; WheelParams.count = 4; WheelParams.resolution = 4; WheelParams.callback = Wheel_Event Touch_Register_Sensor(&WheelParams);

24 Putting It All Together What type of sensors? How many channels required? Single chip or multi-chip design? Multi-touch support? Sensor rejection?

25 But Wait…

26 Questions?

27 Innovation The Cloud TV Remote Control Medical Aggregation Box BP Monitor Pedometer Scale

28 Thank You!

29 Where To Get Stuff