CY8C20110-SX2I

Overview

The CY8C20110-SX2I is a CapSense Express capacitive button controller supporting up to ten inputs. It operates within a voltage range of 2.4 V to 5.25 V and an industrial temperature range of -40 °C to +85 °C. The device features I2C communication with configurable addressing and data rates up to 400 kbps. Active current consumption is typically 1.5 mA, while deep sleep mode draws 4 µA. It includes onboard nonvolatile memory for configuration storage and supports LED dimming with 15 selectable duty cycles.

Feature Summary

• Robust sensing algorithm providing high sensitivity and low noise immunity against RF and AC interference
• Configurable outputs supporting strong drive capability for LEDs and interrupt generation
• Onboard nonvolatile memory enabling automatic loading of custom settings at power-on
• Supports multiple operating modes including active, periodic sleep, and deep sleep states

Applications

• Printers
• Cellular handsets
• LCD monitors
• Portable DVD players

Procurement Notes

Verify the specific package type required, as the CY8C20110 family is available in 16-pin QFN, 8-pin SOIC, and 16-pin SOIC configurations. Confirm that the ordering suffix corresponds to the desired physical package and lead-free status. Ensure compatibility with the host system's I2C voltage levels and check for any silicon errata related to acknowledgment timing or flash storage operations before finalizing procurement.

Selection Notes

Select the CY8C20110 variant when ten capacitive buttons are required. Other family members offer fewer inputs: CY8C20180 (8), CY8C20160 (6), and CY8C20140/CY8C20142 (4). Note that LED dimming functionality is exclusive to the CY8C20110. Consider the available GPIO count and package constraints when choosing between the different pin counts and form factors offered by the series.

Part Context

This component belongs to the CapSense Express family of capacitive controllers designed for mechanical button replacement. It integrates a robust sensing core, control registers with nonvolatile storage, and configurable outputs. The device simplifies integration by allowing runtime reconfiguration over I2C and eliminating the need for external components in many applications.

Replacement Considerations

Direct replacements within the same family include CY8C20180, CY8C20160, CY8C20140, and CY8C20142, depending on the required number of capacitive inputs. Verify pinout compatibility if substituting with lower-input variants, as the number of available configurable IOs changes.