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Home Appliances

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Reference Designs
Technical Articles
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Block Diagram - Home Appliances

The PSoC provides a one-chip solution for majority of the home appliances integrating CapSense which is industry’s best touch solution, analog sensor interface to interface various sensors for humidity temperature measurement, LED and LCD drivers for output user interface. PSoC also helps integrating other system functions like RTC, relay, motor, LED backlight, buzzer control using on-chip resources. Communication interfaces can be selected from a rich list of supported protocols by PSoC that helps communicating with host-controllers in large appliances or interfacing with external peripherals like digital sensors etc.


Design Considerations

We are tapping into the appliance revolution where homeowners want sophisiticated and elegant appliances. These products need to have capacitive buttons and slides, LCD or LED display. User want want flat surfaces that are easy to clean and buttons to be available in accesible locations in appliances. There are various challenges that you may face while designing for today’s market needs.

  1. Capacitive buttons can be unreliable
    Water droplets can cause false touches
    Curved or thick overlays reduce button performance
    Manufacturing variations require time-consuming re-tuning
    EMI can cause buttons to malfunction
    Class B safety certification is required.
  2. Extra features add cost
    Each UI system must have a host MCU and sensors
    Each analog sensor requires an additional IC
    Each additional IC raises BOM cost and design complexity
  3. Your IP is vulnerable in a common MCU
    Many websites offer reverse-engineering of MCU firmware

PSoC solves these problems

Cypress CapSense works under water droplets and detects touch through curved or thick overlays
SmartSense Auto-tuning = No manual tuning + Better EMI immunity
Cypress provides a Class B self-test library for safe operation
The PSoC one-chip solution integrates CapSense, analog sensor interfaces, LED and LCD drivers
PSoC encrypts IP in your systems, making it very difficult to reverse-engineer your IP

CapSense in PSoC is a one-chip, easy-to-use, low-cost UI solution with high reliability and IP protection

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Design Guides

Getting started with CapSense
Shows the basics of designing with CapSense and how to get started

CapSense Design Guide
Provides Cypress’s CapSense Plus design guidelines


Application Notes

AN2096 - PSoC® 1 - Using the ADCINC Analog to Digital Converter
AN2096 describes the necessary configuration and code required to use the PSoC 1 ADCINC Analog to Digital Converter (ADC). The ADCINC can be configured from 8 to 14 bits, with several different input ranges.

AN50475 - Induction Cooker Design with CapSense®
AN50475 discusses the implementation of an induction cooker with CapSense® control based on CY8C22x45.

AN56384 - PSoC® 1 Segment LCD Direct Drive
AN56384 explains implementation of software based multiplexed segment lcd driver in psoc® 1 device.

Development Kits/Boards

CY3280-22x45 Universal CapSense Controller Board
The CY3280-22x45 Universal CapSense Controller Board enables you to evaluate CapSense Plus capability of CY8C22x45 device family. This kit is equipped with an on-chip debugger device (OCD) that allows you to develop and debug the application as per your need.

CY3280-SLM Linear Slider Module Kit

IP Elements

SmartSense2X is the User Module available in PSoC Designer 5.3 for capacitive touch based user interface design. Some of the key features of SmartSense2X User Module are:

Reduces design effort by eliminating system tuning
Adapts to PCB, overlay and paint manufacturing variations that affect capacitive sensing performance
Eliminates additional fine-tuning at production
Allows a platform design approach with different overlays, button shapes, and trace lengths

Handles changes in system environment, including EMI noise sources such as RF and AC line

  

Product

PSoC® 1 is the world's first Programmable embedded System-on-Chip integrating configurable analog and digital peripheral functions, memory, and a microcontroller on a single chip. Powered by Cypress's proprietary 8-bit M8C core, the PSoC 1 portfolio of devices provides the system designer analog integration, flexible IO routing and complete control of power consumption. Following products from our PSoC 1 CapSense Plus portfolio are best fit for home appliances applications.

CY8C21x34
CY8C22xxx/CY8C21x45
CY8C28xxx

These are many other devices available for non-touch solution for home appliances. Explore other product from PSoC 1 portfolio based on your applications needs.

PSoC 1 Portfolio

For help in product selection for your application, contact Cypress technical expert.

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Techincal Articles

Home Appliance User Interface - Designing for today’s market trend!

This article talks about various requirements for home appliances user interface and how PSoC 1 meets them.

Training On-Demand
Video

Software and Drivers

PSoC Creator
PSoC Creator is a state-of-the-art software development IDE combined with a revolutionary graphical design editor to form a uniquely powerful hardware/software co-design environment.

PSoC Designer
PSoC Designer is the revolutionary Integrated Design Environment (IDE) that you can use to customize PSoC to meet your specific application requirements. PSoC Designer software accelerates system bring-up and time-to-market.

Spec No: None; Sunset Owner: SGUP; Secondary Owner: IZR; Sunset Date: 06/15/20