CY8C20160-SX2I

Overview

The CY8C20160-SX2I is a CapSense Express capacitive button controller supporting six capacitive sensing inputs. It operates within voltage ranges of 2.4 V to 2.9 V, 3.10 V to 3.6 V, and 4.75 V to 5.25 V. Active current consumption is 1.5 mA during continuous sensor scanning, while deep sleep current drops to 4 µA. The device features an I2C interface with data rates up to 400 kbps and supports configurable addressing. It includes onboard nonvolatile memory for storing custom settings and operates across an industrial temperature range from –40 °C to +85 °C.

Feature Summary

• Robust sensing algorithm providing high sensitivity and low noise with immunity to RF and AC interference
• Configurable outputs capable of strong LED drive control via I2C or direct input state mapping
• Advanced power management including active, periodic sleep, and deep sleep modes with GPIO interrupt wake capability

Applications

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

Procurement Notes

Verify the specific suffix 'SX2I' against official Infineon documentation to confirm package type and tape-and-reel specifications. Ensure the selected variant matches the required operating voltage range and environmental temperature ratings for the target application design.

Selection Notes

Select this component when a solution requiring exactly six capacitive buttons is needed. Consider the CY8C20140 or CY8C20142 if fewer buttons are sufficient, or the CY8C20180/CY8C20110 for higher channel counts. Evaluate the I2C clock stretching requirements of the host microcontroller to ensure compatibility with the device's acknowledgment timing.

Part Context

This part belongs to the Cypress (now Infineon) CapSense Express family, designed for simple integration of capacitive touch interfaces without complex tuning. It utilizes SmartSense technology to automatically adjust to environmental changes, reducing development time compared to manual tuning solutions.

Replacement Considerations

Compatible substitutes within the same series include CY8C20140, CY8C20142, CY8C20180, and CY8C20110. Selection depends on the required number of capacitive buttons (4, 8, or 10 respectively). Verify pinout compatibility and register map consistency before substitution.