CY8C20110_09 Datasheet, PDF (1/29 Pages) Cypress Semiconductor – CapSense Express Button Capacitive Controllers

CY8C20110/CY8C20180/CY8C20160
CY8C20140/CY8C20142
CapSense^® Express™ Button
Capacitive Controllers
Features
■ 10/8/6/4 Capacitive Button Input
❐ Robust sensing algorithm
❐ High sensitivity, low noise
❐ Immunity to RF and AC noise
❐ Low radiated EMC noise
❐ Supports wide range of input capacitance, sensor shapes,
and sizes
■ Target Applications
❐ Printers
❐ Cellular handsets
❐ LCD monitors
❐ Portable DVD players
■ Low Operating Current
❐ Active current: continuous sensor scan: 1.5 mA
❐ Deep sleep current: 4 uA
■ Industry's Best Configurability
❐ Custom sensor tuning, one optional capacitor
❐ Output supports strong drive for LED
❐ Output state can be controlled through I²C or directly from
CapSense^® input state
❐ Run time re-configurable over I²C
■ Advanced Features
❐ All GPIOs support LED dimming with configurable delay
option in CY8C21110
❐ Interrupt outputs
❐ User defined Inputs
❐ Wake on interrupt input
❐ Sleep control pin
❐ Nonvolatile storage of custom settings
❐ Easy integration into existing products – configure output to
match system
❐ No external components required
❐ World class free configuration tool
■ Wide Range of Operating Voltages
❐ 2.4V to 2.9V
❐ 3.10V to 3.6V
❐ 4.75V to 5.25V
■ I²C Communication
❐ Supported from 1.8V
❐ Internal pull up resistor support option
❐ Data rate up to 400 kbps
❐ Configurable I²C addressing
■ Industrial temperature range: –40°C to +85°C.
■ Available in16-pin COL, 8-pin, and 16-pin SOIC Packages
Overview
These CapSense Express™ controllers support 4 to 10 capac-
itive sensing (CapSense buttons). The device functionality is
configured through an I²C port and can be stored in onboard
nonvolatile memory for automatic loading at power on. The
CY8C20110 is optimized for dimming LEDs in 15 selectable duty
cycles for back light applications. The device can be configured
to have up to 10 GPIOs connected to the PWM output. The PWM
duty cycle is programmable for variable LED intensities.
The four key blocks that make up these devices are: a robust
capacitive sensing core with high immunity against radiated and
conductive noise, control registers with nonvolatile storage,
configurable outputs, and I²C communications. The user can
configure registers with parameters needed to adjust the
operation and sensitivity of the CapSense buttons and outputs
and permanently store the settings. The standard I²C serial
communication interface enables the host to configure the
device and read sensor information in real time. The I²C address
is fully configurable without any external hardware strapping.
Cypress Semiconductor Corporation • 198 Champion Court
Document Number: 001-54606 Rev. **
• San Jose, CA 95134-1709 • 408-943-2600
Revised July 12, 2009
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