Touch controller can replace button without software/firmware
The CY8CMBR2044 CapSense Express capacitive touch-sensing controller enables designers to achieve mechanical button replacement (MBR) without having to write firmware or learn to use new software tools. The device leverages the company’s revolutionary SmartSense auto-tuning algorithm, which eliminates the requirement for system tuning.
The controller operates from 1.7 to 5.5 V, while offering a supply current in run mode as low as 15 µA per button and an industry-best — according to the company — deep-sleep current of 100 nA. The device accurately tracks button pushes, even with very closely spaced sensors and offers a built-in failure analysis feature with serial data out for debug, speeding the design-in process.
Housed in a 16-pad QFN package, the part also integrates a voltage regulator to address power supply noise as well as filters for any spurious noise. It is supported by the company’s Design Toolbox, which guides the user through the CapSense button design process. (Contact company for pricing — available now.)
Cypress Semiconductor , San Jose , CA
Sales Office 408-545-6914
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