CPT007B-A02-GUR

Overview

The CPT007B-A02-GUR is a capacitive touch controller from the TouchXpress family, designed to replace mechanical buttons. It supports up to seven capacitive sensor inputs and features seven general-purpose outputs (GPOs) for host communication or LED driving. The device operates within a voltage range of 1.8 V to 3.6 V and functions between -40 °C and +85 °C. It is housed in a 20-pin QFN package measuring 3 mm x 3 mm x 0.55 mm. Power consumption is specified at 200 µA in active mode and 1 µA in sleep mode. The component utilizes a GPIO interface and includes advanced features such as moisture immunity and wake-on-proximity capabilities.

Feature Summary

• Eliminates firmware development complexity through fixed-function operation
• Configurable via simple GUI-based configurator for all sense parameters
• Provides moisture immunity and wake-on-proximity functionality
• Supports buzzer feedback for enhanced user experience

Applications

• Home appliances
• Instrument and control panels
• White goods
• Medical equipment
• Consumer electronics
• Lighting control

Procurement Notes

Verify the specific suffix 'GUR' indicates reel packaging with a factory pack quantity of 2500 units. Confirm current lifecycle status, as related variants are marked as obsolete. Ensure compatibility with existing PCB footprints for the 20-pin QFN-3x3 package. Validate that the GPIO interface meets the host processor requirements without additional level shifting.

Selection Notes

Select this model when minimizing firmware effort is critical for rapid UI design. Choose the CPT007B series for applications requiring up to seven independent touch inputs. Consider the low power specifications for battery-operated devices. Verify that the operating temperature range suits the intended environment. Compare against other TouchXpress family members if more channels or different interfaces are needed.

Part Context

This component belongs to Silicon Labs' TouchXpress family of fixed-function controllers. It is engineered to simplify capacitive touch implementation by removing the need for complex software development. The family targets designers seeking quick integration of modern touch interfaces into legacy or new hardware designs.

Replacement Considerations

Public documentation indicates that related variants like CPT007B-A01-GM may be obsolete. Check for updated revisions within the CPT007B series. No direct public substitute part numbers are confirmed in the provided source material.