CPT212B-A01-GMR

Overview

The CPT212B-A01-GMR is a 12-channel capacitive touch controller from the Silicon Labs TouchXpress series, designed for button-based user interfaces. It operates on an I2C interface and supports a supply voltage range of 1.8 V to 3.6 V, with a typical operating voltage of 2.4 V. The device is housed in a QFN-20 package measuring 3 mm x 3 mm x 0.55 mm. It functions within a temperature range of -40°C to +85°C. This component serves as a configuration loader for touch sensing applications.

Feature Summary

• Provides a turnkey solution for adding capacitive touch interfaces without complex firmware development
• Integrates a configuration loader for simplified setup of touch sensor parameters
• Utilizes an I2C interface for communication with host microcontrollers

Applications

• Home appliances
• Medical devices
• Consumer electronics
• Instrumentation and control panels
• Lighting controls

Procurement Notes

Verify the specific suffix 'GMR' against official documentation to confirm reel packaging specifications, as datasheets may primarily list 'GM'. Confirm end-of-life status and discontinuance notifications prior to procurement planning. Ensure compatibility with existing I2C bus configurations and voltage levels during integration.

Selection Notes

Select this component when a 12-channel capacitive touch solution is required for button inputs. Verify that the host system supports I2C communication and operates within the specified voltage range. Consider the QFN-20 package dimensions for PCB layout constraints. Evaluate the need for the configuration loader feature to streamline the design process.

Part Context

The CPT212B-A01-GMR belongs to the CPT212B series of capacitive touch controllers by Silicon Labs. It is part of the TouchXpress family, which aims to simplify touch interface implementation. The 'A01' designation typically refers to a specific configuration or calibration setting within the series.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult Silicon Labs documentation for potential cross-references or newer generations within the TouchXpress portfolio.